US20050101404A1 - Golf club head with localized grooves and reinforcement - Google Patents
Golf club head with localized grooves and reinforcement Download PDFInfo
- Publication number
- US20050101404A1 US20050101404A1 US10/943,978 US94397804A US2005101404A1 US 20050101404 A1 US20050101404 A1 US 20050101404A1 US 94397804 A US94397804 A US 94397804A US 2005101404 A1 US2005101404 A1 US 2005101404A1
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- United States
- Prior art keywords
- face
- thickness
- golf club
- club head
- club
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B53/00—Golf clubs
- A63B53/04—Heads
- A63B53/0466—Heads wood-type
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B53/00—Golf clubs
- A63B53/04—Heads
- A63B53/0408—Heads characterised by specific dimensions, e.g. thickness
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B53/00—Golf clubs
- A63B53/04—Heads
- A63B53/0445—Details of grooves or the like on the impact surface
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B53/00—Golf clubs
- A63B53/04—Heads
- A63B53/0458—Heads with non-uniform thickness of the impact face plate
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2209/00—Characteristics of used materials
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B53/00—Golf clubs
- A63B53/04—Heads
- A63B53/045—Strengthening ribs
- A63B53/0454—Strengthening ribs on the rear surface of the impact face plate
Definitions
- the invention relates to a golf club head. More particularly, the invention is related to a golf club head with a face provided with localized grooves on the exterior of the face and a reinforced central region on the interior of the face.
- club heads has long been studied. Among the more prominent considerations in club head design are loft, lie, face angle, horizontal face bulge, vertical face roll, face progression, sole curvature, center of gravity location, and overall head weight. While this basic set of criteria is generally the focus of golf club engineering, several other considerations must also be addressed.
- the interior design of the club head may be tailored to achieve particular characteristics, such as by including hosel or shaft attachment means, perimeter weighting on the face or body of the club head, and fillers within hollow club heads. The choice of materials for manufacture of the club head, must also be considered.
- the type of surface treatment on the outer surface of the face is an additional design consideration.
- USGA United States Golf Association
- the organization that sets the rules of golf in the United Sates has instituted a rule that prohibits the competitive use in any USGA sanctioned event of a golf club where the surface roughness within an impact area of the face exceeds that of decorative sandblasting or fine milling.
- USGA United States Golf Association
- faces are traditionally provided with stria or grooves, at regularly spaced intervals on the surface.
- the grooves are usually parallel, and must conform to standards established by the USGA covering groove cross-sectional symmetry, groove edge roundness, distance between adjacent grooves, and groove depth.
- the designs for golf club heads also must be strong enough to withstand the impact forces that occur due to contact between the head and the ball.
- the loading that occurs during this brief impact can confer an acceleration to the golf ball that is 20,000 times the acceleration of gravity, which is about four orders of magnitude greater than that of gravity.
- the club face and body should be designed to resist permanent deformations or catastrophic failure, such as by cracking.
- the thickness of the club head face impacts various club head parameters, including the overall weight of the club head, the rigidity of the face, the vibration characteristics of the club head, the sound produced upon impact of the face with a ball, and the location of the center of gravity of the club head. In some club heads, it is desirable to minimize face thickness. Any decrease in thickness, however, must be compensated for by adjusting other design considerations. Such adjustments may include the provision of other structural features on the back surface of the club face, or the inner surface of the club head shell. Another optional adjustment includes the use of a filler material in the shell. Furthermore, the overall construction of the club head may be adjusted, such as by using a face plate insert that is fit to a club head shell, by welding, soldering or other means. Alternatively, the face plate insert may be integrally formed with the shell.
- a golf club head particularly a metal wood
- the performance of a golf club head is in part a function of the proper shape and size of the club face.
- One especially vexing problem encountered during casting of prior art club heads is that the club head face, which is initially cast with a generally convex exterior surface, upon cooling often collapses inward and fails to retain the desired shape. Such a problem may be exacerbated in club heads with thin faces.
- a golf club head that can be consistently manufactured with a desired club head shape and size, and has a face that can withstand the impact stresses encountered during ball striking. More particularly, there is a need for a club head with a thin face that performs well. Additionally, there is a need for a club head that minimizes the degree of backspin imparted to a golf ball.
- the present invention relates to a golf club head adapted for attachment to a shaft.
- the head includes a shell that defines an inner cavity.
- the shell includes a face and a body.
- the face has an exterior surface and an interior surface. Grooves are formed on the exterior surface of the face offset from the sweet spot or center of the face.
- a localized reinforcement portion is provided on the interior surface of the face at the sweet spot or center.
- the face has two portions with different thicknesses.
- the localized reinforcement portion has a first thickness greater than the second thickness of the remaining portion of the face.
- the second portion surrounding the first portion has a second thickness less than or equal to about 0.12 inches, and the first thickness is greater than the second thickness.
- a grooveless region on the exterior of the face comprises at least 25% of the face area including the center thereof.
- grooves do not extend across the exterior surface of the face at the localized reinforcement portion, and the grooves bound an area less than or equal to about 50% of an area of the face.
- the grooves preferably are spaced from the center of the face at least 0.375 inches in any direction.
- the first thickness or thickness of the reinforcement portion is greater than or equal to about 0.08 inches and less than or equal to about 0.12 inches.
- the second thickness is less than or equal to about 0.12 inches and more preferably less than or equal to about 0.08 inches. Most preferably the second thickness is less than or equal to about 0.06 inches.
- the first thickness can be uniform or varied across the reinforcement portion.
- the first portion and second portion are formed of the same material. At least one groove preferably extends substantially between a toe end and a heel end of the golf club.
- the localized reinforcement portion has an area between about 10% to about 90% of the face area.
- the reinforcement portion area is less than about 15% of the face area.
- the area of the localized reinforcement portion is less than about 25% of the face area.
- the shell of the club head has a crown plate, a sole plate, the face, and a hosel, with the sole plate formed integral with the shell.
- the crown plate is formed integral with the shell.
- the present invention is also directed to a golf club head adapted for attachment to a shaft that includes a shell that defines an inner cavity.
- the shell further includes a face with first and second portions.
- the first portion is in the center of the face and has a first thickness.
- the second portion has a second thickness less than or equal to about 0.12 inches.
- the first thickness is greater than the second thickness.
- the face has an exterior surface with a substantially smooth portion having an area greater than about 25% of an area of the face.
- the smooth portion is in the center of the face and is the part that lacks grooves.
- the smooth portion includes at least a portion of the first portion.
- the present invention is also related to a method of forming a golf club head comprising the steps of forming a shell defining an inner cavity with a face and a body.
- the step of forming the shell includes the steps of: forming the face with a first portion of the face in the center of the face and having a first thickness, and a second portion surrounding the first portion and having a second thickness less than or equal to about 0.12, with the first thickness being greater than the second thickness; and forming grooves in the face spaced from the center.
- the step of forming the shell further includes casting the first portion simultaneously with the face.
- the step of forming the shell includes casting the first portion separate from the face and subsequently coupling the first portion to the face.
- the face is stamped.
- the face is engraved.
- FIG. 1 shows a front, perspective view of a first embodiment of a golf club head of the present invention.
- FIG. 2 shows a bottom, perspective view of the golf club head of FIG. 1 with a sole plate removed.
- FIG. 3 shows a front view of a first embodiment of a face of the golf club head of FIG. 1 .
- FIG. 3A shows a cross-sectional view through the face of FIG. 3 along line 3 A- 3 A.
- FIG. 3B shows a cross-sectional view the face of FIG. 3 along line 3 B- 3 B.
- FIG. 4 shows a front view of a second embodiment of the face of the golf club head of the present invention.
- FIG. 5 shows a plot of safety factor as a function of COR for various faces of uniform and non-uniform thickness.
- Club head 10 includes shell 12 with a body 14 , face 16 , toe portion 18 , heel portion 20 , and top portion 24 .
- the head 10 further includes a sole plate 26 (shown in phantom), hosel 27 , and top portion 24 .
- the sole plate 26 fits in a recess 29 defined in the body 14 .
- the shell 12 and sole plate 26 create an inner cavity 30 .
- the face 16 is preferably provided with grooves 32 on its exterior surface 34 . In a preferred embodiment, at least one groove 32 extends substantially between toe portion 18 and heel portion 20 .
- a golf club shaft (not shown) is attached at hosel 27 .
- the hosel may extend to the bottom of the club head, may terminate at a location intermediate the top portion 27 and sole plate 26 , or the hosel 27 may terminate at the top portion 24 of the head.
- Inner cavity 30 of club head 10 may be empty, or alternatively may be filled with a foam or other low specific gravity material.
- the shell is entirely cast, or at least face 16 is formed from a higher strength alloy than body 14 . More preferably, shell 12 is formed so that the body 14 and face 16 may be combined to be integral, such as by welding, thus forming a homogeneous shell.
- shell 12 has a body 14 , face 16 , toe portion 18 , heel portion 20 , sole plate 26 , and hosel 27 .
- the sole plate is formed integral with shell 12 .
- a separate crown plate (not shown) is fitted to shell 12 , thereby creating the hollow, inner cavity.
- the crown plate may alternatively be formed integral with the shell.
- face 16 is cold forged or stamped from as-rolled sheet stock of high strength SP-700 titanium alloy (Ti-4.5% Al-3% V-2% Mo-2% Fe).
- face 16 is formed of a high strength forging titanium alloy such as 10-2-3 (Ti-10% V-2% Fe-3% Al) or 15-3-3-3 (Ti-15% V-3% Cr-3% Sn-3% Al).
- Body 14 along with sole plate 26 or a crown plate are produced from a different titanium alloy from that of face 16 , preferably by casting a 6-4 alloy (Ti-6% Al-4% V).
- localized reinforcement portion 36 is provided in a central region of an interior surface 40 of face 16 .
- the reinforcement portion 36 is formed of additional material that may be integrally cast as part of the face 16 , or formed as a separate piece affixed to the face 16 by other means, such as welding and the like.
- the reinforcement portion 36 is preferably made of the same material as the shell 12 to facilitate casting, or to facilitate bonding to interior surface 40 .
- the reinforcement portion 36 may be made of a different material.
- reinforcement portion 36 has a rectangular perimeter.
- reinforcement portion 36 may have any other shaped perimeter, such as an arcuate shape perimeter or re-entrant shapes. Reinforcement portion 36 may also have a shape that follows another geometrical pattern or contour, and may be symmetrical or asymmetrical.
- sides 42 of reinforcement portion 36 lie generally perpendicular with respect to the interior surface 40 of face 16 . It is also contemplated that the interfacial edges defined at lower lines of transition 44 of face 16 and reinforcement portion 36 may have an irregular or sloping profile. Other profiles for sides 42 may be employed, including a gradual or stepped slope from top surface 46 of reinforcement portion 36 to the lower lines of transition 44 .
- reinforcement portion 36 has an area that is between about 10% and about 90% of the interior surface area 40 or face area.
- the interior surface and exterior face areas are substantially the same. However, in an embodiment where they vary, either can be used as a comparison to the reinforcement area.
- the reinforcement area is approximately about 25% of the face area. Most preferably, the reinforcement area is about 15% of the face area.
- the reinforcement portion 36 has a thickness t 2 greater than the thickness t 1 of the remainder of the face 16 .
- the thicknesses t 1 and t 2 are the maximum thicknesses of the respective areas, because thickness varies at grooves 32 to a minimum. It is preferred that the reinforcement thickness t 2 is between about 0.08 inches and about 0.12 inches.
- the thicknesses t 1 and t 2 can be uniform or varied. It is preferred that the thickness t 1 of the remaining portion of the face surrounding the reinforcement portion 36 is less than about 0.12 inches, more preferably less than about 0.08 inches, and most preferably less than 0.06 inches.
- Reinforcement portion 36 is provided at or aligned with a sweet spot or the center of face 16 , as defined below, where impact forces are expected to be greatest. This permits a thinner face 16 to be used, as compared with a non-reinforced design. The reinforcement distributes the stresses such that the structural integrity of face 16 is sound.
- the sweet spot is generally defined, in mechanical terms, as the intersection of a longitudinal line passing through the center of gravity and the face 16 .
- the center of the face includes the sweet spot, but refers to a larger area of the face.
- the center is a portion of the face that can be defined and still be surrounded on all four sides with a remaining portion of the face without the reinforcement portion.
- the reinforcement portion can be located aligned with the sweet spot or more generally in the center of the face.
- the horizontal projection of the center of gravity intersects the face 16 in the reinforcement portion 36 , the thickened region of the club face. More preferably, the intersection of the horizontal projection of the center of gravity with the face is located substantially in the center of reinforcement portion 36 .
- the grooves 32 on external surface 34 of face 16 are provided in localized areas surrounding the sweet spot or center.
- the grooves also referred to as corrugation, are formed by scoring, engraving, cutting, stamping, or casting the shapes into the head face.
- the face is stamped and/or engraved.
- the grooves 32 on the exterior surface 34 are V-shaped (as best shown in FIGS. 3A and 3B ).
- the grooves are another shape, such as square or U-shaped.
- the grooveless portion of the club face is at least about 25% of the face area.
- the grooveless portion includes the area at the center of the face.
- the grooves are preferably offset from and do not extend across the reinforcement portion, while covering an area less than or equal to about 50% of the face area.
- at least one groove is spaced at least 0.375 inch from the center of the face in any direction.
- a circle with a diameter of 0.75 inch, free of grooves, may for example be formed at the center of the face.
- FIG. 4 shows an alternate embodiment of a face 16 ′ for use with the club head 10 (as shown in FIG. 1 ) of the present development.
- the face 16 ′ lacks grooves (as shown in FIG. 1 ).
- This “grooveless” face 16 ′ preferably has an extremely smooth external surface 34 ′, as can be achieved with grinding and polishing techniques known in the art. Such a grooveless surface may be effective in minimizing the degree of back spin imparted to a golf ball upon impact with the club face 16 ′, thus reducing the tendency of a ball that has been hit from a non-central part of face 16 ′ to hook or slice.
- the lack of grooves may also provide an additional benefit of giving a golfer enhanced control of the trajectory of a golf ball upon impact, as well as increased roll. Thus, a golfer may be able to achieve a longer distance shot for a given club with grooveless faces as compared to grooved or partially grooved faces.
- the face 16 ′ has the reinforcement portion 36 (as shown in phantom), as discussed above.
- grooves 32 in the sweet spot or central area of face 16 confers a similar benefit as the completely grooveless head faces described above.
- the provision of localized grooves 32 may provide more desirable ball flight on the course following misaligned shots. This is due to the limited gripping interaction of the groove with the surface of the ball, or limited deformation of the ball within the groove.
- the design of a club head may be evaluated using computational techniques, which can include the use of finite element analysis models.
- computational techniques When computer modeling club heads, a mass of 200 grams was maintained by adjusting the value of the point masses as the thickness of the face changed. Facial stresses were determined assuming a 109 mph club head speed, and such stresses may be used to evaluate face integrity.
- COR coefficient of restitution
- club heads was investigated by using a two-parameter design space consisting of the COR and maximum stress or a safety factor. By performing iterative calculations within this space, it was possible to approach the target COR of 0.829 (for a relative velocity of 160 ft/sec), while still having a safety factor greater than 1.
- the target COR corresponds to the regulated value established by the USGA.
- a club head exhibiting a safety factor above 1.0 is the minimum design whose face will not cave-in during use.
- Club heads with data points within the shaded area 60 have a safety factor above 1.0, and therefore are acceptable.
- Line 62 has points that represent Conventional Club Heads with different face thickness t 1 .
- Line 62 shows that as thickness increases from 0.80 inches to 0.105 inches COR decreases.
- the club head represented by point A exhibits a safety factor of 1.0 and therefore is acceptable.
- the club head at point A has a face thickness of 0.105 inches.
- the club head at point A has a COR of about 0.72 for the considered club head.
- Line 64 represents Inventive Club Heads with a central reinforcement portion so that the club head at point B had a reinforcement thickness t 2 greater than remaining face thickness t 1 , as discussed above.
- the club head represented by point B exhibits a safety factor of greater than 1.0, therefore the point B is within the shaded or acceptable area 60 .
- the club head at point B has a COR of about 0.77, which is greater than the COR for the club head at point A.
- Comparative Club 1, Comparative Club 2, and Comparative Club 3 were produced having uniform face thicknesses of 0.08 inches, 0.09 inches and 0.10 inches, respectively.
- a robot manufactured by True Temper and called Iron Byron was used to test these clubs.
- Comparative Club 1 and Comparative Club 2 were 104%, 101.3% and 98.7% of regulated value, respectively. Thus, as thickness increased from Club 1 to Club 3, COR decreased undesirably. Comparative Club 1 and Comparative Club 2 both exhibited face collapse under the testing conditions (i.e., a swing speed of 109 mph). Thus, Comparative Club 1 and Comparative Club 2 are unacceptable.
- An Inventive Club has a 1.2 inch by 0.9 inch reinforcement portion at the center.
- the reinforcement thickness t 2 is 0.12 inches.
- the thickness of the remaining portion is 0.08 inches.
- Computer modeling confirmed that the Inventive Club has reduced stress in the face center compared to uniform thickness conventional clubs.
- the thickness t 1 may be further adjusted to account for off-center hits, possibly decreasing COR.
- the use of a reinforcement portion, such as with the Inventive Club allows an acceptable COR to be obtained with a club head that exhibits superior behavior under stress when compared, for example, to Comparative Club 3.
- a portion of the face of such an Inventive Club has a substantially smaller thickness than permitted by acceptable uniform face thickness clubs, such as Comparative Club 3.
Abstract
Description
- The invention relates to a golf club head. More particularly, the invention is related to a golf club head with a face provided with localized grooves on the exterior of the face and a reinforced central region on the interior of the face.
- The complexities of golf club design are well-known. The choice of specifications for each component of the club (i.e., the club head, shaft, hosel, grip, and subcomponents thereof) directly impacts the performance of the club. Thus, by varying the design specifications, a golf club can be tailored to desired performance characteristics.
- The design of club heads has long been studied. Among the more prominent considerations in club head design are loft, lie, face angle, horizontal face bulge, vertical face roll, face progression, sole curvature, center of gravity location, and overall head weight. While this basic set of criteria is generally the focus of golf club engineering, several other considerations must also be addressed. The interior design of the club head may be tailored to achieve particular characteristics, such as by including hosel or shaft attachment means, perimeter weighting on the face or body of the club head, and fillers within hollow club heads. The choice of materials for manufacture of the club head, must also be considered.
- The type of surface treatment on the outer surface of the face is an additional design consideration. The United States Golf Association (USGA), the organization that sets the rules of golf in the United Sates, has instituted a rule that prohibits the competitive use in any USGA sanctioned event of a golf club where the surface roughness within an impact area of the face exceeds that of decorative sandblasting or fine milling. To spite this rule, it is widely known that many players create a roughened club head face, in order to obtain a greater backspin on their shots.
- Additionally, faces are traditionally provided with stria or grooves, at regularly spaced intervals on the surface. The grooves are usually parallel, and must conform to standards established by the USGA covering groove cross-sectional symmetry, groove edge roundness, distance between adjacent grooves, and groove depth.
- Various theories have been advanced to either explain or dismiss the importance and influence of grooves. The physical influence of the groove on ball trajectory, for example, may be partly attributed to the momentary deformation of the golf ball cover into the groove upon impact. This deformation is dictated by the modulus of elasticity of the golf ball cover material. Grooves are generally credited with providing large-scale, or macro-roughening on the club head face, thereby increasing back spin. Grooves in the club face may also assist a player in club alignment at address. While the degree of influence of club facial grooves on ball trajectory is disputed, grooves are largely recognized as a meaningful consideration in club head design.
- The designs for golf club heads also must be strong enough to withstand the impact forces that occur due to contact between the head and the ball. The loading that occurs during this brief impact can confer an acceleration to the golf ball that is 20,000 times the acceleration of gravity, which is about four orders of magnitude greater than that of gravity. Thus, the club face and body should be designed to resist permanent deformations or catastrophic failure, such as by cracking.
- It is not unusual for the club heads of prior art woods to have a face thickness exceeding 0.12 inch. This thickness has typically been required so that the club head face can withstand the impact forces. The faces of irons must also withstand considerable stresses, and as disclosed in U.S. Pat. No. 5,971,868 to Kosmatka. Thus, the faces of irons may be provided with a contoured back surface to provide increased structural integrity. Nevertheless, the design of hollow woods presents distinctly different challenges from irons, particularly due to the cavities defined within hollow woods. Whether produced by investment casting, molding, or otherwise, woods are subjected to different manufacturing stresses, and different performance requirements than irons.
- The thickness of the club head face impacts various club head parameters, including the overall weight of the club head, the rigidity of the face, the vibration characteristics of the club head, the sound produced upon impact of the face with a ball, and the location of the center of gravity of the club head. In some club heads, it is desirable to minimize face thickness. Any decrease in thickness, however, must be compensated for by adjusting other design considerations. Such adjustments may include the provision of other structural features on the back surface of the club face, or the inner surface of the club head shell. Another optional adjustment includes the use of a filler material in the shell. Furthermore, the overall construction of the club head may be adjusted, such as by using a face plate insert that is fit to a club head shell, by welding, soldering or other means. Alternatively, the face plate insert may be integrally formed with the shell.
- Particularly during casting of a club head, it is difficult to repeatedly produce the desired shape to a tight dimensional tolerance. However, the performance of a golf club head, particularly a metal wood, is in part a function of the proper shape and size of the club face. One especially vexing problem encountered during casting of prior art club heads is that the club head face, which is initially cast with a generally convex exterior surface, upon cooling often collapses inward and fails to retain the desired shape. Such a problem may be exacerbated in club heads with thin faces.
- Thus, there is a need for a golf club head that can be consistently manufactured with a desired club head shape and size, and has a face that can withstand the impact stresses encountered during ball striking. More particularly, there is a need for a club head with a thin face that performs well. Additionally, there is a need for a club head that minimizes the degree of backspin imparted to a golf ball.
- The present invention relates to a golf club head adapted for attachment to a shaft. The head includes a shell that defines an inner cavity. The shell includes a face and a body. The face has an exterior surface and an interior surface. Grooves are formed on the exterior surface of the face offset from the sweet spot or center of the face.
- Preferably, a localized reinforcement portion is provided on the interior surface of the face at the sweet spot or center. As a result, the face has two portions with different thicknesses. The localized reinforcement portion has a first thickness greater than the second thickness of the remaining portion of the face. The second portion surrounding the first portion has a second thickness less than or equal to about 0.12 inches, and the first thickness is greater than the second thickness. A grooveless region on the exterior of the face comprises at least 25% of the face area including the center thereof. Preferably, grooves do not extend across the exterior surface of the face at the localized reinforcement portion, and the grooves bound an area less than or equal to about 50% of an area of the face. The grooves preferably are spaced from the center of the face at least 0.375 inches in any direction.
- In one embodiment, the first thickness or thickness of the reinforcement portion is greater than or equal to about 0.08 inches and less than or equal to about 0.12 inches. The second thickness is less than or equal to about 0.12 inches and more preferably less than or equal to about 0.08 inches. Most preferably the second thickness is less than or equal to about 0.06 inches. The first thickness can be uniform or varied across the reinforcement portion. The first portion and second portion are formed of the same material. At least one groove preferably extends substantially between a toe end and a heel end of the golf club.
- In another embodiment, the localized reinforcement portion has an area between about 10% to about 90% of the face area. Preferably, the reinforcement portion area is less than about 15% of the face area. In yet another embodiment, the area of the localized reinforcement portion is less than about 25% of the face area. Preferably, the shell of the club head has a crown plate, a sole plate, the face, and a hosel, with the sole plate formed integral with the shell. Alternatively, the crown plate is formed integral with the shell.
- The present invention is also directed to a golf club head adapted for attachment to a shaft that includes a shell that defines an inner cavity. The shell further includes a face with first and second portions. The first portion is in the center of the face and has a first thickness. The second portion has a second thickness less than or equal to about 0.12 inches. The first thickness is greater than the second thickness. In addition, the face has an exterior surface with a substantially smooth portion having an area greater than about 25% of an area of the face. Preferably, the smooth portion is in the center of the face and is the part that lacks grooves. The smooth portion includes at least a portion of the first portion.
- The present invention is also related to a method of forming a golf club head comprising the steps of forming a shell defining an inner cavity with a face and a body. The step of forming the shell includes the steps of: forming the face with a first portion of the face in the center of the face and having a first thickness, and a second portion surrounding the first portion and having a second thickness less than or equal to about 0.12, with the first thickness being greater than the second thickness; and forming grooves in the face spaced from the center. Preferably, the step of forming the shell further includes casting the first portion simultaneously with the face. Alternatively, the step of forming the shell includes casting the first portion separate from the face and subsequently coupling the first portion to the face. In one embodiment, the face is stamped. In another embodiment, the face is engraved.
- Preferred features of the present invention are disclosed in the accompanying drawings, wherein similar reference characters denote similar elements throughout the several views, and wherein:
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FIG. 1 shows a front, perspective view of a first embodiment of a golf club head of the present invention. -
FIG. 2 shows a bottom, perspective view of the golf club head ofFIG. 1 with a sole plate removed. -
FIG. 3 shows a front view of a first embodiment of a face of the golf club head ofFIG. 1 . -
FIG. 3A shows a cross-sectional view through the face ofFIG. 3 alongline 3A-3A. -
FIG. 3B shows a cross-sectional view the face ofFIG. 3 alongline 3B-3B. -
FIG. 4 shows a front view of a second embodiment of the face of the golf club head of the present invention. -
FIG. 5 shows a plot of safety factor as a function of COR for various faces of uniform and non-uniform thickness. - With reference to
FIGS. 1 and 2 , a first embodiment of agolf club head 10 of the present invention is shown.Club head 10 includesshell 12 with abody 14,face 16,toe portion 18,heel portion 20, andtop portion 24. Thehead 10 further includes a sole plate 26 (shown in phantom),hosel 27, andtop portion 24. Thesole plate 26 fits in arecess 29 defined in thebody 14. Theshell 12 andsole plate 26 create aninner cavity 30. Theface 16 is preferably provided withgrooves 32 on itsexterior surface 34. In a preferred embodiment, at least onegroove 32 extends substantially betweentoe portion 18 andheel portion 20. - During use, a golf club shaft (not shown) is attached at
hosel 27. The hosel may extend to the bottom of the club head, may terminate at a location intermediate thetop portion 27 andsole plate 26, or thehosel 27 may terminate at thetop portion 24 of the head. -
Inner cavity 30 ofclub head 10 may be empty, or alternatively may be filled with a foam or other low specific gravity material. Preferably, the shell is entirely cast, or atleast face 16 is formed from a higher strength alloy thanbody 14. More preferably,shell 12 is formed so that thebody 14 andface 16 may be combined to be integral, such as by welding, thus forming a homogeneous shell. - In an alternate embodiment,
shell 12 has abody 14,face 16,toe portion 18,heel portion 20,sole plate 26, andhosel 27. The sole plate is formed integral withshell 12. In this embodiment, a separate crown plate (not shown) is fitted to shell 12, thereby creating the hollow, inner cavity. The crown plate may alternatively be formed integral with the shell. - In a preferred embodiment, face 16 is cold forged or stamped from as-rolled sheet stock of high strength SP-700 titanium alloy (Ti-4.5% Al-3% V-2% Mo-2% Fe). Alternatively, face 16 is formed of a high strength forging titanium alloy such as 10-2-3 (Ti-10% V-2% Fe-3% Al) or 15-3-3-3 (Ti-15% V-3% Cr-3% Sn-3% Al).
Body 14 along withsole plate 26 or a crown plate are produced from a different titanium alloy from that offace 16, preferably by casting a 6-4 alloy (Ti-6% Al-4% V). - Referring to
FIG. 2 ,localized reinforcement portion 36 is provided in a central region of aninterior surface 40 offace 16. In a preferred embodiment, thereinforcement portion 36 is formed of additional material that may be integrally cast as part of theface 16, or formed as a separate piece affixed to theface 16 by other means, such as welding and the like. Thereinforcement portion 36 is preferably made of the same material as theshell 12 to facilitate casting, or to facilitate bonding tointerior surface 40. Alternatively, thereinforcement portion 36 may be made of a different material. Preferably,reinforcement portion 36 has a rectangular perimeter. In an alternate embodiment,reinforcement portion 36 may have any other shaped perimeter, such as an arcuate shape perimeter or re-entrant shapes.Reinforcement portion 36 may also have a shape that follows another geometrical pattern or contour, and may be symmetrical or asymmetrical. - Referring to
FIG. 3B , in the preferred embodiment, sides 42 ofreinforcement portion 36 lie generally perpendicular with respect to theinterior surface 40 offace 16. It is also contemplated that the interfacial edges defined at lower lines oftransition 44 offace 16 andreinforcement portion 36 may have an irregular or sloping profile. Other profiles forsides 42 may be employed, including a gradual or stepped slope fromtop surface 46 ofreinforcement portion 36 to the lower lines oftransition 44. - It is recommended that
reinforcement portion 36 has an area that is between about 10% and about 90% of theinterior surface area 40 or face area. The interior surface and exterior face areas are substantially the same. However, in an embodiment where they vary, either can be used as a comparison to the reinforcement area. In a preferred embodiment, the reinforcement area is approximately about 25% of the face area. Most preferably, the reinforcement area is about 15% of the face area. - Referring to
FIGS. 3A and 3B , thereinforcement portion 36 has a thickness t2 greater than the thickness t1 of the remainder of theface 16. The thicknesses t1 and t2 are the maximum thicknesses of the respective areas, because thickness varies atgrooves 32 to a minimum. It is preferred that the reinforcement thickness t2 is between about 0.08 inches and about 0.12 inches. The thicknesses t1 and t2 can be uniform or varied. It is preferred that the thickness t1 of the remaining portion of the face surrounding thereinforcement portion 36 is less than about 0.12 inches, more preferably less than about 0.08 inches, and most preferably less than 0.06 inches. -
Reinforcement portion 36 is provided at or aligned with a sweet spot or the center offace 16, as defined below, where impact forces are expected to be greatest. This permits athinner face 16 to be used, as compared with a non-reinforced design. The reinforcement distributes the stresses such that the structural integrity offace 16 is sound. - The sweet spot is generally defined, in mechanical terms, as the intersection of a longitudinal line passing through the center of gravity and the
face 16. The center of the face includes the sweet spot, but refers to a larger area of the face. The center is a portion of the face that can be defined and still be surrounded on all four sides with a remaining portion of the face without the reinforcement portion. Thus, the reinforcement portion can be located aligned with the sweet spot or more generally in the center of the face. - Preferably, the horizontal projection of the center of gravity intersects the
face 16 in thereinforcement portion 36, the thickened region of the club face. More preferably, the intersection of the horizontal projection of the center of gravity with the face is located substantially in the center ofreinforcement portion 36. - As shown in
FIG. 3 , thegrooves 32 onexternal surface 34 offace 16 are provided in localized areas surrounding the sweet spot or center. The grooves, also referred to as corrugation, are formed by scoring, engraving, cutting, stamping, or casting the shapes into the head face. Preferably, the face is stamped and/or engraved. In a preferred embodiment, thegrooves 32 on theexterior surface 34 are V-shaped (as best shown inFIGS. 3A and 3B ). In an alternate embodiment, the grooves are another shape, such as square or U-shaped. The grooveless portion of the club face is at least about 25% of the face area. Preferably, the grooveless portion includes the area at the center of the face. Also, the grooves are preferably offset from and do not extend across the reinforcement portion, while covering an area less than or equal to about 50% of the face area. In a preferred embodiment, at least one groove is spaced at least 0.375 inch from the center of the face in any direction. A circle with a diameter of 0.75 inch, free of grooves, may for example be formed at the center of the face. -
FIG. 4 shows an alternate embodiment of aface 16′ for use with the club head 10 (as shown inFIG. 1 ) of the present development. Theface 16′ lacks grooves (as shown inFIG. 1 ). This “grooveless”face 16′ preferably has an extremely smoothexternal surface 34′, as can be achieved with grinding and polishing techniques known in the art. Such a grooveless surface may be effective in minimizing the degree of back spin imparted to a golf ball upon impact with theclub face 16′, thus reducing the tendency of a ball that has been hit from a non-central part offace 16′ to hook or slice. The lack of grooves may also provide an additional benefit of giving a golfer enhanced control of the trajectory of a golf ball upon impact, as well as increased roll. Thus, a golfer may be able to achieve a longer distance shot for a given club with grooveless faces as compared to grooved or partially grooved faces. Theface 16′ has the reinforcement portion 36 (as shown in phantom), as discussed above. - It should be noted that the lack of
grooves 32 in the sweet spot or central area of face 16 (as shown inFIG. 1 ) confers a similar benefit as the completely grooveless head faces described above. The provision oflocalized grooves 32, as shown for example inFIG. 3 , in some instances may provide more desirable ball flight on the course following misaligned shots. This is due to the limited gripping interaction of the groove with the surface of the ball, or limited deformation of the ball within the groove. - The design of a club head may be evaluated using computational techniques, which can include the use of finite element analysis models. When computer modeling club heads, a mass of 200 grams was maintained by adjusting the value of the point masses as the thickness of the face changed. Facial stresses were determined assuming a 109 mph club head speed, and such stresses may be used to evaluate face integrity. Also of interest in the design of the club head is the coefficient of restitution (COR), which is the ratio of the velocity of separation to the velocity of approach. In this model, therefore, COR was determined using the following formula:
(νball-post−νclub-post)/νclub-pre
where, -
- νball-post represents the velocity of the ball after impact;
- νclub-post represents the velocity of the club after impact; and
- νclub-pre represents the velocity of the club before impact.
The COR, in general, depends on the shape and material properties of the colliding bodies. A perfectly elastic impact has a COR of one (1), indicating that no energy is lost, while a perfectly inelastic or plastic impact has a COR of zero, indicating that the colliding bodies did not separate after impact resulting in a maximum loss of energy.
- Referring to
FIG. 5 , the design of club heads was investigated by using a two-parameter design space consisting of the COR and maximum stress or a safety factor. By performing iterative calculations within this space, it was possible to approach the target COR of 0.829 (for a relative velocity of 160 ft/sec), while still having a safety factor greater than 1. The target COR corresponds to the regulated value established by the USGA. A club head exhibiting a safety factor above 1.0 is the minimum design whose face will not cave-in during use. Club heads with data points within the shadedarea 60 have a safety factor above 1.0, and therefore are acceptable. -
Line 62 has points that represent Conventional Club Heads with different face thickness t1.Line 62 shows that as thickness increases from 0.80 inches to 0.105 inches COR decreases. The club head represented by point A exhibits a safety factor of 1.0 and therefore is acceptable. The club head at point A has a face thickness of 0.105 inches. The club head at point A has a COR of about 0.72 for the considered club head. -
Line 64 represents Inventive Club Heads with a central reinforcement portion so that the club head at point B had a reinforcement thickness t2 greater than remaining face thickness t1, as discussed above. The club head represented by point B exhibits a safety factor of greater than 1.0, therefore the point B is within the shaded oracceptable area 60. The club head at point B has a COR of about 0.77, which is greater than the COR for the club head at point A.TEST Face Thickness Thickness Percent of Examples Description Value(s) Regulated COR COR Comparative Uniform 0.08 inches 104% 0.862 Club 1 Comparative Uniform 0.09 inches 101.3% 0.840 Club 2 Comparative Uniform 0.10 inches 98.7% 0.818 Club 3 - Drivers (Comparative Club 1, Comparative Club 2, and Comparative Club 3) were produced having uniform face thicknesses of 0.08 inches, 0.09 inches and 0.10 inches, respectively. A robot manufactured by True Temper and called Iron Byron was used to test these clubs.
- COR values for Comparative Club 1, Comparative Club 2 and Comparative Club 3 were 104%, 101.3% and 98.7% of regulated value, respectively. Thus, as thickness increased from Club 1 to Club 3, COR decreased undesirably. Comparative Club 1 and Comparative Club 2 both exhibited face collapse under the testing conditions (i.e., a swing speed of 109 mph). Thus, Comparative Club 1 and Comparative Club 2 are unacceptable.
- An Inventive Club has a 1.2 inch by 0.9 inch reinforcement portion at the center. The reinforcement thickness t2 is 0.12 inches. The thickness of the remaining portion is 0.08 inches. Computer modeling confirmed that the Inventive Club has reduced stress in the face center compared to uniform thickness conventional clubs. The thickness t1 may be further adjusted to account for off-center hits, possibly decreasing COR. Advantageously, the use of a reinforcement portion, such as with the Inventive Club, allows an acceptable COR to be obtained with a club head that exhibits superior behavior under stress when compared, for example, to Comparative Club 3. In addition, a portion of the face of such an Inventive Club has a substantially smaller thickness than permitted by acceptable uniform face thickness clubs, such as Comparative Club 3.
- While various descriptions of the present invention are described above, it should be understood that the various features of each embodiment can be used singly or in any combination thereof. Therefore, this invention is not to be limited to only the specifically preferred embodiments depicted herein. Further, it should be understood that variations and modifications within the spirit and scope of the invention may occur to those skilled in the art to which the invention pertains. Accordingly, all expedient modifications readily attainable by one versed in the art from the disclosure set forth herein that are within the scope and spirit of the present invention are to be included as further embodiments of the present invention. The scope of the present invention is accordingly defined as set forth in the appended claims.
Claims (20)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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US10/943,978 US20050101404A1 (en) | 2000-04-19 | 2004-09-20 | Golf club head with localized grooves and reinforcement |
JP2005272264A JP2006087928A (en) | 2004-09-20 | 2005-09-20 | Golf club head provided with local groove and reinforcing member |
US12/887,173 US8007372B2 (en) | 2000-04-19 | 2010-09-21 | Golf club head with localized grooves and reinforcement |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US55189300A | 2000-04-19 | 2000-04-19 | |
US10/943,978 US20050101404A1 (en) | 2000-04-19 | 2004-09-20 | Golf club head with localized grooves and reinforcement |
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US55189300A Continuation | 2000-04-19 | 2000-04-19 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US12/887,173 Continuation US8007372B2 (en) | 2000-04-19 | 2010-09-21 | Golf club head with localized grooves and reinforcement |
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US20050101404A1 true US20050101404A1 (en) | 2005-05-12 |
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Family Applications (2)
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US10/943,978 Abandoned US20050101404A1 (en) | 2000-04-19 | 2004-09-20 | Golf club head with localized grooves and reinforcement |
US12/887,173 Expired - Fee Related US8007372B2 (en) | 2000-04-19 | 2010-09-21 | Golf club head with localized grooves and reinforcement |
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Application Number | Title | Priority Date | Filing Date |
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US12/887,173 Expired - Fee Related US8007372B2 (en) | 2000-04-19 | 2010-09-21 | Golf club head with localized grooves and reinforcement |
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US (2) | US20050101404A1 (en) |
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Citations (97)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1525352A (en) * | 1924-02-27 | 1925-02-03 | Aitken James Abram Garfield | Golf-club |
US1543691A (en) * | 1922-06-10 | 1925-06-30 | William N Beat | Golf club |
US1582836A (en) * | 1925-07-17 | 1926-04-27 | Thos E Wilson & Co | Metallic golf-club head |
US1589363A (en) * | 1925-04-18 | 1926-06-22 | Cuthbert S Butchart | Golf club |
US1699874A (en) * | 1927-12-09 | 1929-01-22 | R H Buhrke Co | Golf-club construction |
US1704119A (en) * | 1927-12-09 | 1929-03-05 | R H Buhrke Co | Golf-club construction |
US1704165A (en) * | 1927-12-09 | 1929-03-05 | R H Buhrke Co | Golf-club construction |
US1720867A (en) * | 1928-04-30 | 1929-07-16 | Webster George Greig | Golf-club construction |
US2034936A (en) * | 1931-07-15 | 1936-03-24 | George E Barnhart | Golf club |
US2087685A (en) * | 1935-02-16 | 1937-07-20 | William A Blair | Golf club |
US3567228A (en) * | 1968-10-09 | 1971-03-02 | John Nord Lynn | High energy golf club |
US3571900A (en) * | 1969-12-08 | 1971-03-23 | Shakespeare Co | Method of molding a golf club head |
US3659855A (en) * | 1967-09-15 | 1972-05-02 | Shakespeare Co | Golf club head and novel method of producing same |
US3863932A (en) * | 1973-05-21 | 1975-02-04 | Wilson Sporting Goods | Weighted wood golf club |
US4023802A (en) * | 1974-10-02 | 1977-05-17 | Acushnet Company | Golf club wood |
US4193601A (en) * | 1978-03-20 | 1980-03-18 | Acushnet Company | Separate component construction wood type golf club |
US4213613A (en) * | 1977-12-29 | 1980-07-22 | Nygren Gordon W | Golf club head with center of gravity near its striking face |
US4214754A (en) * | 1978-01-25 | 1980-07-29 | Pro-Patterns Inc. | Metal golf driver and method of making same |
USD267965S (en) * | 1979-07-06 | 1983-02-15 | Maruman Golf Kabushiki Kaisha | Iron club head |
US4429879A (en) * | 1982-04-05 | 1984-02-07 | Schmidt Glenn H | Sole plate internal suspension in metal shells to form metal woods |
US4449707A (en) * | 1982-05-22 | 1984-05-22 | Mizuno Corporation | Golf club head of carbon fiber reinforced plastic |
US4451041A (en) * | 1982-02-05 | 1984-05-29 | Mizuno Corporation | Golf club head and a method for manufacturing the same |
US4451042A (en) * | 1982-04-07 | 1984-05-29 | Mizuno Corporation | Golf club head of carbon fiber reinforced plastic |
US4511145A (en) * | 1983-07-18 | 1985-04-16 | Schmidt Glenn H | Reinforced hollow metal golf club head |
US4826172A (en) * | 1987-03-12 | 1989-05-02 | Antonious A J | Golf club head |
US4842243A (en) * | 1988-01-19 | 1989-06-27 | Lie Angle Solutions, Inc. | Method and apparatus for molding golf club heads |
US4913438A (en) * | 1987-01-27 | 1990-04-03 | Anderson Donald A | Golf club |
US4915385A (en) * | 1987-01-27 | 1990-04-10 | Anderson Donald A | Golf club |
US4915386A (en) * | 1988-10-25 | 1990-04-10 | Antonious A J | Perimeter weighted iron type golf club head with centrally located complementary weight |
US4919430A (en) * | 1987-03-12 | 1990-04-24 | Antonious A J | Golf club head |
US4919431A (en) * | 1987-03-12 | 1990-04-24 | Antonious A J | Golf club head |
US4921252A (en) * | 1987-09-14 | 1990-05-01 | Antonious A J | Iron type golf club head with integral sighting and alignment means |
US4930781A (en) * | 1988-08-17 | 1990-06-05 | Allen Dillis V | Constant resonant frequency golf club head |
US4932658A (en) * | 1987-03-12 | 1990-06-12 | Antonious A J | Golf club head |
US5000454A (en) * | 1988-08-31 | 1991-03-19 | Maruman Golf Kabushiki Kaisha | Golf club head |
US5024437A (en) * | 1989-06-12 | 1991-06-18 | Gear Fit Golf, Inc. | Golf club head |
US5028049A (en) * | 1989-10-30 | 1991-07-02 | Mckeighen James F | Golf club head |
US5090702A (en) * | 1990-01-31 | 1992-02-25 | Taylor Made Company, Inc. | Golf club head |
US5094383A (en) * | 1989-06-12 | 1992-03-10 | Anderson Donald A | Golf club head and method of forming same |
US5106094A (en) * | 1989-06-01 | 1992-04-21 | Salomon S.A. | Golf club head and process of manufacturing thereof |
US5180166A (en) * | 1990-10-16 | 1993-01-19 | Callaway Golf Company | Hollow, metallic golf club head with dendritic structure |
US5183255A (en) * | 1991-07-18 | 1993-02-02 | Antonious A J | Golf club with improved hosel construction |
US5213328A (en) * | 1992-01-23 | 1993-05-25 | Macgregor Golf Company | Reinforced metal golf club head |
US5221087A (en) * | 1992-01-17 | 1993-06-22 | Lisco, Inc. | Metal golf clubs with inserts |
US5295689A (en) * | 1993-01-11 | 1994-03-22 | S2 Golf Inc. | Golf club head |
US5304945A (en) * | 1993-04-19 | 1994-04-19 | At&T Bell Laboratories | Low-distortion feed-forward amplifier |
US5318300A (en) * | 1990-10-16 | 1994-06-07 | Callaway Golf Company | Metal wood golf club with variable faceplate thickness |
US5328184A (en) * | 1988-12-28 | 1994-07-12 | Antonious A J | Iron type golf club head with improved weight configuration |
US5390924A (en) * | 1993-10-13 | 1995-02-21 | Antonious; Anthony J. | Iron-type gold club head with improved weight distribution at the rear club face and upper sole of the club head |
US5395113A (en) * | 1994-02-24 | 1995-03-07 | Antonious; Anthony J. | Iron type golf club with improved weight configuration |
US5397127A (en) * | 1993-04-12 | 1995-03-14 | The Yokohama Rubber Co., Ltd. | Wood type golf club head |
US5397126A (en) * | 1993-02-26 | 1995-03-14 | Vardon Golf Company, Inc. | Metal wood golf club with true heel and toe weighting |
US5401021A (en) * | 1993-10-22 | 1995-03-28 | Vardon Golf Company, Inc. | Set of golf club irons with enlarged faces |
US5405137A (en) * | 1993-01-26 | 1995-04-11 | Taylor Made Golf Company, Inc. | Golf club head and insert |
US5407202A (en) * | 1992-11-03 | 1995-04-18 | Igarashi; Lawrence Y. | Golf club with faceplate of titanium or other high strength, lightweight metal materials |
US5417559A (en) * | 1991-10-15 | 1995-05-23 | Callaway Golf Company | Wax pattern mold |
US5417419A (en) * | 1989-06-12 | 1995-05-23 | Anderson; Donald A. | Golf club with recessed, non-metallic outer face plate |
US5423535A (en) * | 1991-09-28 | 1995-06-13 | Dunlop Slazenger International, Ltd. | Golf club heads with face plates of varying specific gravity |
US5429357A (en) * | 1992-05-01 | 1995-07-04 | Kabushiki Kaisha Endo Seisakusho | Golf clubhead and its method of manufacturing |
US5482279A (en) * | 1994-07-25 | 1996-01-09 | Antonious; Anthony J. | Golf club metal wood-type head with improved perimeter structure and weight configuration |
US5497993A (en) * | 1994-03-14 | 1996-03-12 | Shan; Shiau S. | Structure of golf club head |
US5505450A (en) * | 1990-02-02 | 1996-04-09 | Stuff; Alfred O. | Golf club heads with means for imparting corrective action |
US5505453A (en) * | 1994-07-20 | 1996-04-09 | Mack; Thomas E. | Tunable golf club head and method of making |
US5522593A (en) * | 1993-05-31 | 1996-06-04 | Kabushiki Kaisha Endo Seisakusho | Golf club head |
US5524331A (en) * | 1994-08-23 | 1996-06-11 | Odyssey Sports, Inc. | Method for manufacturing golf club head with integral inserts |
US5527034A (en) * | 1993-11-30 | 1996-06-18 | Goldwin Golf U.S.A., Inc. | Golf club and method of manufacture |
US5595552A (en) * | 1995-12-15 | 1997-01-21 | Karsten Manufacturing Corp. | Golf club head with tuning and vibration control means |
US5611741A (en) * | 1990-10-16 | 1997-03-18 | Callaway Golf Company | Hollow, large, metallic, golf club head |
US5611742A (en) * | 1995-08-04 | 1997-03-18 | Kabushiki Kaisha Endo Seisakusho | Wood-type golf club head |
US5626530A (en) * | 1992-08-05 | 1997-05-06 | Callaway Golf Company | Golf club head with sole bevel indicia |
USD379393S (en) * | 1995-12-01 | 1997-05-20 | Karsten Manufacturing Corporation | Golf club head |
US5709617A (en) * | 1995-07-27 | 1998-01-20 | The Yokohama Rubber Co., Ltd. | Wood type golf club head |
US5709615A (en) * | 1997-01-29 | 1998-01-20 | Liang; Long-Cherng | Golf club head with a hitting face plate and a club neck which are integrally formed with each other and forming method therefor |
US5709614A (en) * | 1995-09-07 | 1998-01-20 | The Yokohama Rubber Co., Ltd. | Golf club head and method of manufacturing the same |
US5711722A (en) * | 1995-04-09 | 1998-01-27 | Bridgestone Sports Co., Ltd. | Golf club head |
US5716292A (en) * | 1996-07-24 | 1998-02-10 | Huang; Hui Ming | Golf club head |
US5718641A (en) * | 1997-03-27 | 1998-02-17 | Ae Teh Shen Co., Ltd. | Golf club head that makes a sound when striking the ball |
US5720673A (en) * | 1989-06-12 | 1998-02-24 | Pacific Golf Holdings | Structure and process for affixing a golf club head insert to a golf club head body |
US5743813A (en) * | 1997-02-19 | 1998-04-28 | Chien Ting Precision Casting Co., Ltd. | Golf club head |
US5753170A (en) * | 1996-09-20 | 1998-05-19 | Muang; Mui Ming | Manufacturing process and structure of a golf club head |
US5755624A (en) * | 1996-01-22 | 1998-05-26 | Callaway Golf Company | Selectively balanced golf club heads and method of head selection |
US5762567A (en) * | 1994-07-25 | 1998-06-09 | Antonious; Anthony J. | Metal wood type golf club head with improved weight distribution and configuration |
US5766092A (en) * | 1993-04-16 | 1998-06-16 | Taylor Made Golf Company | "Iron"-type golf club head |
US5766094A (en) * | 1996-06-07 | 1998-06-16 | Lisco Inc. | Face inserts for golf club heads |
US5766095A (en) * | 1997-01-22 | 1998-06-16 | Antonious; Anthony J. | Metalwood golf club with elevated outer peripheral weight |
US5863261A (en) * | 1996-03-27 | 1999-01-26 | Demarini Sports, Inc. | Golf club head with elastically deforming face and back plates |
US5873791A (en) * | 1997-05-19 | 1999-02-23 | Varndon Golf Company, Inc. | Oversize metal wood with power shaft |
US5873795A (en) * | 1997-01-21 | 1999-02-23 | Wilson Sporting Goods Co. | Iron-type golf clubhead with optimized point of least rigidity |
USD406294S (en) * | 1997-10-09 | 1999-03-02 | Burrows Bruce D | Iron-type head for a golf club |
US5888148A (en) * | 1997-05-19 | 1999-03-30 | Vardon Golf Company, Inc. | Golf club head with power shaft and method of making |
US5890973A (en) * | 1995-11-17 | 1999-04-06 | Gamble; Christopher L. | Golf club |
US5908357A (en) * | 1997-10-30 | 1999-06-01 | Hsieh; Chih-Ching | Golf club head with a shock absorbing arrangement |
USD411272S (en) * | 1997-11-11 | 1999-06-22 | Burrows Bruce D | Iron-type head for a golf club |
US6248025B1 (en) * | 1997-10-23 | 2001-06-19 | Callaway Golf Company | Composite golf club head and method of manufacturing |
US6338683B1 (en) * | 1996-10-23 | 2002-01-15 | Callaway Golf Company | Striking plate for a golf club head |
US20030064823A1 (en) * | 2001-09-28 | 2003-04-03 | Akio Yamamoto | Golf clubhead |
US6755627B2 (en) * | 2002-02-01 | 2004-06-29 | Samsung Electronics Co., Ltd. | Linear compressor |
Family Cites Families (115)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1319233A (en) | 1919-10-21 | George w | ||
US1318325A (en) | 1919-01-03 | 1919-10-07 | Martin D Klin | Golf-club. |
US1467435A (en) | 1921-01-31 | 1923-09-11 | Kinnear William | Golf club |
US1605551A (en) | 1923-08-03 | 1926-11-02 | Crawford Mcgregor & Canby Co | Insert for golf clubs |
US1595589A (en) | 1926-03-22 | 1926-08-10 | Ralph G Tyler | Golf-club head |
US3625518A (en) | 1969-05-23 | 1971-12-07 | Karsten Solheim | Golf club head with complex curvature for the sole and/or the striking face |
US3985363A (en) | 1973-08-13 | 1976-10-12 | Acushnet Company | Golf club wood |
JPS589170U (en) | 1981-07-04 | 1983-01-21 | マルマンゴルフ株式会社 | golf club head |
US4471961A (en) | 1982-09-15 | 1984-09-18 | Pepsico, Inc. | Golf club with bulge radius and increased moment of inertia about an inclined axis |
US4465221A (en) | 1982-09-28 | 1984-08-14 | Schmidt Glenn H | Method of sustaining metallic golf club head sole plate profile by confined brazing or welding |
US4792140A (en) * | 1983-03-28 | 1988-12-20 | Sumitomo Rubber Industries, Ltd. | Iron type golf club head |
US4762324A (en) | 1987-01-27 | 1988-08-09 | Anderson Donald A | Gold club |
USD312858S (en) | 1988-04-14 | 1990-12-11 | Donald J. C. Sun | Putter head |
US4955610A (en) | 1989-02-27 | 1990-09-11 | Creighton William W | Driving iron golf club head |
US5255918A (en) | 1989-06-12 | 1993-10-26 | Donald A. Anderson | Golf club head and method of forming same |
US5261664A (en) | 1989-06-12 | 1993-11-16 | Donald Anderson | Golf club head and method of forming same |
US5344140A (en) | 1989-06-12 | 1994-09-06 | Donald A. Anderson | Golf club head and method of forming same |
JPH07112498B2 (en) | 1989-07-19 | 1995-12-06 | 三菱マテリアル株式会社 | Golf club head manufacturing method |
US5046733A (en) | 1989-12-04 | 1991-09-10 | Antonious A J | Iron type golf club head with improved perimeter weight configuration |
US5141230A (en) | 1990-08-10 | 1992-08-25 | Antonious A J | Metal wood golf club head with improved weighting system |
US5242167A (en) | 1990-09-25 | 1993-09-07 | Antonious A J | Perimeter weighted iron type club head with centrally located geometrically shaped weight |
US5067715A (en) | 1990-10-16 | 1991-11-26 | Callaway Golf Company | Hollow, metallic golf club head with dendritic structure |
US5351958A (en) | 1990-10-16 | 1994-10-04 | Callaway Golf Company | Particle retention in golf club metal wood head |
US5240252A (en) | 1990-10-16 | 1993-08-31 | Callaway Golf Company | Hollow, metallic golf club head with relieved sole and dendritic structure |
DE69128692T2 (en) | 1990-11-09 | 1998-06-18 | Toyoda Chuo Kenkyusho Kk | Titanium alloy made of sintered powder and process for its production |
US5060951A (en) | 1991-03-06 | 1991-10-29 | Allen Dillis V | Metal headed golf club with enlarged face |
US5547630A (en) | 1991-10-15 | 1996-08-20 | Callaway Golf Company | Wax pattern molding process |
CA2081687A1 (en) | 1992-03-12 | 1993-09-13 | Gordon S. Rennie | Golf club driver and method for making |
FR2692157B1 (en) | 1992-06-12 | 1994-08-19 | Taylor Made Golf Co | Improvement to improve the behavior of a golf head. |
GB9214884D0 (en) | 1992-07-14 | 1992-08-26 | Country Club Golf Equipment Pr | Golf club metal wood head |
US5437088A (en) | 1993-01-19 | 1995-08-01 | Igarashi; Lawrence Y. | Method of making a golf club that provides enhanced backspin and reduced sidespin |
US5271621A (en) | 1993-01-26 | 1993-12-21 | Lo Kun Nan | Golf club head |
JP2717759B2 (en) | 1993-03-16 | 1998-02-25 | マルマンゴルフ株式会社 | Golf club head |
US5358249A (en) | 1993-07-06 | 1994-10-25 | Wilson Sporting Goods Co. | Golf club with plurality of inserts |
US5346218A (en) | 1993-09-28 | 1994-09-13 | Wilson Sporting Goods Co. | Metal wood golf club with permanently attached internal gates |
US5431396A (en) | 1993-10-19 | 1995-07-11 | Shieh; Tien W. | Golf club head assembly |
US5447307A (en) | 1994-01-28 | 1995-09-05 | Antonious; Anthony J. | Golf club with improved anchor-back hosel |
US5540437A (en) | 1994-03-15 | 1996-07-30 | Bamber; Jeffrey V. | Perimeter weighted golf clubs |
US5480153A (en) | 1994-05-27 | 1996-01-02 | Igarashi; Lawrence Y. | Golf wood club with smooth groove-free face |
US5643104A (en) | 1994-12-23 | 1997-07-01 | Antonious; Anthony J. | Metal wood type golf club head with improved hosel construction |
US5451056A (en) | 1994-08-11 | 1995-09-19 | Hillerich And Bradsby Co., Inc. | Metal wood type golf club |
US5467983A (en) | 1994-08-23 | 1995-11-21 | Chen; Archer C. C. | Golf wooden club head |
US5499814A (en) | 1994-09-08 | 1996-03-19 | Lu; Clive S. | Hollow club head with deflecting insert face plate |
JPH08164229A (en) * | 1994-12-16 | 1996-06-25 | Daiwa Golf Kk | Golf club head |
US5433440A (en) | 1994-12-16 | 1995-07-18 | Rocs Precision Casting Co., Ltd. | Golf club head |
US5584770A (en) | 1995-02-06 | 1996-12-17 | Jensen; Morten A. | Perimeter weighted golf club head |
JPH08229166A (en) | 1995-02-27 | 1996-09-10 | Yamaha Corp | Wood club head for golf |
US5533729A (en) | 1995-03-31 | 1996-07-09 | Leu; Paul | Golf club head |
US5538798A (en) | 1995-04-12 | 1996-07-23 | Niemin Porter & Co. D/B/A Cast Alloys, Inc. | Investment casting gating for metal wood golf club heads |
US5549297A (en) | 1995-07-18 | 1996-08-27 | Mahaffey; Steven J. | Golf club iron with vibration dampening ramp bar |
US5643108A (en) | 1995-08-31 | 1997-07-01 | National Science Council | Structure for golf club head and the method of its manufacture |
US5536006A (en) | 1995-10-31 | 1996-07-16 | Shieh; Tien W. | Golf club head |
US5655976A (en) | 1995-12-18 | 1997-08-12 | Rife; Guerin | Golf club head with improved weight configuration |
JP2880109B2 (en) * | 1995-12-19 | 1999-04-05 | 日本シャフト株式会社 | Golf club head |
US5564994A (en) | 1996-01-22 | 1996-10-15 | Chang; Teng-Ho | Golf club head |
JPH09215783A (en) | 1996-02-08 | 1997-08-19 | Mitsubishi Materials Corp | Golf club head |
US5842934A (en) | 1996-02-22 | 1998-12-01 | Bridgestone Sports Co., Ltd. | Golf clubhead |
US5649872A (en) | 1996-03-11 | 1997-07-22 | Antonious; Anthony J. | Iron type golf club head with improved vibration and shock reduction structure |
US5620382A (en) * | 1996-03-18 | 1997-04-15 | Hyun Sam Cho | Diamond golf club head |
JPH09253243A (en) * | 1996-03-19 | 1997-09-30 | Mitsubishi Materials Corp | Golf club head |
US5797807A (en) | 1996-04-12 | 1998-08-25 | Moore; James T. | Golf club head |
US5807190A (en) | 1996-12-05 | 1998-09-15 | The Beta Group | Golf club head or face |
JP3764211B2 (en) * | 1996-06-05 | 2006-04-05 | Sriスポーツ株式会社 | Golf club head |
US5669829A (en) | 1996-07-31 | 1997-09-23 | Pro Saturn Industrial Corporation | Golf club head |
JP3096967B2 (en) | 1996-09-20 | 2000-10-10 | 横浜ゴム株式会社 | Weight body fixing structure of metal hollow golf club head |
US5776011A (en) | 1996-09-27 | 1998-07-07 | Echelon Golf | Golf club head |
US5830084A (en) | 1996-10-23 | 1998-11-03 | Callaway Golf Company | Contoured golf club face |
US5971868A (en) | 1996-10-23 | 1999-10-26 | Callaway Golf Company | Contoured back surface of golf club face |
USD387113S (en) | 1996-11-26 | 1997-12-02 | Burrows Bruce D | Iron-type head for a golf club |
US5851159A (en) | 1997-01-07 | 1998-12-22 | Burrows; Bruce D. | Metal wood type golf club head |
US5839975A (en) | 1997-01-22 | 1998-11-24 | Black Rock Golf Corporation | Arch reinforced golf club head |
JPH10225538A (en) | 1997-02-17 | 1998-08-25 | Yokohama Rubber Co Ltd:The | Golf club head and manufacture thereof |
US5800285A (en) * | 1997-03-19 | 1998-09-01 | Sturm, Ruger & Company, Inc. | Method of fabricating golf club parts carrying artwork etched after fabrication and parts with such artwork |
US5931746A (en) | 1997-05-21 | 1999-08-03 | Soong; Tsai C. | Golf club head having a tensile pre-stressed face plate |
JPH1119255A (en) | 1997-06-30 | 1999-01-26 | Kamui Works Japan:Kk | Golf club head and its manufacture |
EP0895795B1 (en) * | 1997-08-08 | 2003-09-24 | Sumitomo Rubber Industries Ltd. | Golf club head and manufacturing method for the same |
US5938541A (en) | 1997-09-08 | 1999-08-17 | Vardon Golf Company, Inc. | Golf club head with shortened hosel and ferrule |
US6224497B1 (en) * | 1997-09-25 | 2001-05-01 | Anthony J. Antonious | Golf club head with improved frequency matched ball striking face characteristics |
JP3387789B2 (en) | 1997-10-03 | 2003-03-17 | アルプス電気株式会社 | Tray loading mechanism of recording / reproducing device |
USD401652S (en) | 1997-10-09 | 1998-11-24 | Burrows Bruce D | Iron-type head for a golf club |
JP3211755B2 (en) | 1997-11-28 | 2001-09-25 | 株式会社遠藤製作所 | Wood golf clubs |
US5954596A (en) | 1997-12-04 | 1999-09-21 | Karsten Manufacturing Corporation | Golf club head with reinforced front wall |
JPH11169493A (en) * | 1997-12-16 | 1999-06-29 | Mitsubishi Rayon Co Ltd | Golf club head |
JPH11299938A (en) * | 1998-04-22 | 1999-11-02 | Bridgestone Sports Co Ltd | Golf club head |
JP2000296190A (en) * | 1999-04-15 | 2000-10-24 | Marufuku Seika Kk | Golf club head |
US6575845B2 (en) * | 1999-11-01 | 2003-06-10 | Callaway Golf Company | Multiple material golf club head |
US6354962B1 (en) * | 1999-11-01 | 2002-03-12 | Callaway Golf Company | Golf club head with a face composed of a forged material |
US6398666B1 (en) * | 1999-11-01 | 2002-06-04 | Callaway Golf Company | Golf club striking plate with variable thickness |
US6663504B2 (en) * | 1999-11-01 | 2003-12-16 | Callaway Golf Company | Multiple material golf club head |
US6582323B2 (en) * | 1999-11-01 | 2003-06-24 | Callaway Golf Company | Multiple material golf club head |
US6443856B1 (en) | 1999-11-01 | 2002-09-03 | Callaway Golf Company | Contoured scorelines for the face of a golf club |
JP2001161868A (en) * | 1999-12-10 | 2001-06-19 | Mizuno Corp | Iron club head |
US6605007B1 (en) | 2000-04-18 | 2003-08-12 | Acushnet Company | Golf club head with a high coefficient of restitution |
US7682262B2 (en) * | 2000-04-18 | 2010-03-23 | Acushnet Company | Metal wood club with improved hitting face |
US6428426B1 (en) * | 2000-06-28 | 2002-08-06 | Callaway Golf Company | Golf club striking plate with variable bulge and roll |
US6428427B1 (en) * | 2000-10-03 | 2002-08-06 | Callaway Golf Company | Golf club head with coated striking plate |
US6602150B1 (en) * | 2000-10-05 | 2003-08-05 | Callaway Golf Company | Golf club striking plate with vibration attenuation |
US6966848B2 (en) * | 2000-11-30 | 2005-11-22 | Daiwa Seiko, Inc. | Golf club head and method of manufacturing the same |
JP2002191727A (en) | 2000-12-27 | 2002-07-10 | Bridgestone Sports Co Ltd | Wood club head |
US6824475B2 (en) * | 2001-07-03 | 2004-11-30 | Taylor Made Golf Company, Inc. | Golf club head |
JP4020357B2 (en) | 2001-08-23 | 2007-12-12 | 日本碍子株式会社 | Slag removal method in waste treatment furnace |
JP2003210623A (en) | 2002-01-28 | 2003-07-29 | Yokohama Rubber Co Ltd:The | Hollow golf club head |
US20030220157A1 (en) * | 2002-05-23 | 2003-11-27 | Dennis Tool Company | Golf club head with highly polished hard contact fact |
JP4184749B2 (en) | 2002-10-18 | 2008-11-19 | Sriスポーツ株式会社 | Golf club head |
JP4052113B2 (en) | 2002-12-09 | 2008-02-27 | ブリヂストンスポーツ株式会社 | Golf club head |
JP2004222905A (en) | 2003-01-22 | 2004-08-12 | Sumitomo Rubber Ind Ltd | Golf club head and golf club with the same |
JP2004329544A (en) * | 2003-05-07 | 2004-11-25 | Kasco Corp | Golf club head |
JP4632342B2 (en) * | 2003-11-11 | 2011-02-16 | Sriスポーツ株式会社 | Golf club head |
JP2006043460A (en) * | 2004-08-04 | 2006-02-16 | Acushnet Co | Metal wood club with improved hitting face |
JP2006087928A (en) * | 2004-09-20 | 2006-04-06 | Acushnet Co | Golf club head provided with local groove and reinforcing member |
JP2006149449A (en) * | 2004-11-25 | 2006-06-15 | Bridgestone Sports Co Ltd | Golf club head |
JP4759333B2 (en) * | 2005-07-01 | 2011-08-31 | ヨネックス株式会社 | Golf club head |
US7384348B2 (en) * | 2006-06-28 | 2008-06-10 | O-Ta Precision Industry Co., Inc. | Golf club head |
US7387579B2 (en) * | 2006-06-28 | 2008-06-17 | O-Ta Precision Industry Co., Inc. | Golf club head |
JP4327864B2 (en) | 2007-03-23 | 2009-09-09 | 株式会社東芝 | Recording reservation processing apparatus, recording reservation processing method, and recording apparatus |
-
2004
- 2004-09-20 US US10/943,978 patent/US20050101404A1/en not_active Abandoned
-
2010
- 2010-09-21 US US12/887,173 patent/US8007372B2/en not_active Expired - Fee Related
Patent Citations (100)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1543691A (en) * | 1922-06-10 | 1925-06-30 | William N Beat | Golf club |
US1525352A (en) * | 1924-02-27 | 1925-02-03 | Aitken James Abram Garfield | Golf-club |
US1589363A (en) * | 1925-04-18 | 1926-06-22 | Cuthbert S Butchart | Golf club |
US1582836A (en) * | 1925-07-17 | 1926-04-27 | Thos E Wilson & Co | Metallic golf-club head |
US1704165A (en) * | 1927-12-09 | 1929-03-05 | R H Buhrke Co | Golf-club construction |
US1704119A (en) * | 1927-12-09 | 1929-03-05 | R H Buhrke Co | Golf-club construction |
US1699874A (en) * | 1927-12-09 | 1929-01-22 | R H Buhrke Co | Golf-club construction |
US1720867A (en) * | 1928-04-30 | 1929-07-16 | Webster George Greig | Golf-club construction |
US2034936A (en) * | 1931-07-15 | 1936-03-24 | George E Barnhart | Golf club |
US2087685A (en) * | 1935-02-16 | 1937-07-20 | William A Blair | Golf club |
US3659855A (en) * | 1967-09-15 | 1972-05-02 | Shakespeare Co | Golf club head and novel method of producing same |
US3567228A (en) * | 1968-10-09 | 1971-03-02 | John Nord Lynn | High energy golf club |
US3571900A (en) * | 1969-12-08 | 1971-03-23 | Shakespeare Co | Method of molding a golf club head |
US3863932A (en) * | 1973-05-21 | 1975-02-04 | Wilson Sporting Goods | Weighted wood golf club |
US4023802A (en) * | 1974-10-02 | 1977-05-17 | Acushnet Company | Golf club wood |
US4213613A (en) * | 1977-12-29 | 1980-07-22 | Nygren Gordon W | Golf club head with center of gravity near its striking face |
US4214754A (en) * | 1978-01-25 | 1980-07-29 | Pro-Patterns Inc. | Metal golf driver and method of making same |
US4193601A (en) * | 1978-03-20 | 1980-03-18 | Acushnet Company | Separate component construction wood type golf club |
USD267965S (en) * | 1979-07-06 | 1983-02-15 | Maruman Golf Kabushiki Kaisha | Iron club head |
US4451041A (en) * | 1982-02-05 | 1984-05-29 | Mizuno Corporation | Golf club head and a method for manufacturing the same |
US4429879A (en) * | 1982-04-05 | 1984-02-07 | Schmidt Glenn H | Sole plate internal suspension in metal shells to form metal woods |
US4451042A (en) * | 1982-04-07 | 1984-05-29 | Mizuno Corporation | Golf club head of carbon fiber reinforced plastic |
US4449707A (en) * | 1982-05-22 | 1984-05-22 | Mizuno Corporation | Golf club head of carbon fiber reinforced plastic |
US4511145A (en) * | 1983-07-18 | 1985-04-16 | Schmidt Glenn H | Reinforced hollow metal golf club head |
US4913438A (en) * | 1987-01-27 | 1990-04-03 | Anderson Donald A | Golf club |
US4915385A (en) * | 1987-01-27 | 1990-04-10 | Anderson Donald A | Golf club |
US4826172A (en) * | 1987-03-12 | 1989-05-02 | Antonious A J | Golf club head |
US4919431A (en) * | 1987-03-12 | 1990-04-24 | Antonious A J | Golf club head |
US4932658A (en) * | 1987-03-12 | 1990-06-12 | Antonious A J | Golf club head |
US4919430A (en) * | 1987-03-12 | 1990-04-24 | Antonious A J | Golf club head |
US4921252A (en) * | 1987-09-14 | 1990-05-01 | Antonious A J | Iron type golf club head with integral sighting and alignment means |
US4842243A (en) * | 1988-01-19 | 1989-06-27 | Lie Angle Solutions, Inc. | Method and apparatus for molding golf club heads |
US4930781A (en) * | 1988-08-17 | 1990-06-05 | Allen Dillis V | Constant resonant frequency golf club head |
US5000454A (en) * | 1988-08-31 | 1991-03-19 | Maruman Golf Kabushiki Kaisha | Golf club head |
US4915386A (en) * | 1988-10-25 | 1990-04-10 | Antonious A J | Perimeter weighted iron type golf club head with centrally located complementary weight |
US5328184A (en) * | 1988-12-28 | 1994-07-12 | Antonious A J | Iron type golf club head with improved weight configuration |
US5328184B1 (en) * | 1988-12-28 | 1995-08-22 | Antonious A J | Iron type golf club head with improved weight configuration |
US5106094A (en) * | 1989-06-01 | 1992-04-21 | Salomon S.A. | Golf club head and process of manufacturing thereof |
US5720673A (en) * | 1989-06-12 | 1998-02-24 | Pacific Golf Holdings | Structure and process for affixing a golf club head insert to a golf club head body |
US5024437A (en) * | 1989-06-12 | 1991-06-18 | Gear Fit Golf, Inc. | Golf club head |
US5094383A (en) * | 1989-06-12 | 1992-03-10 | Anderson Donald A | Golf club head and method of forming same |
US5417419A (en) * | 1989-06-12 | 1995-05-23 | Anderson; Donald A. | Golf club with recessed, non-metallic outer face plate |
US5028049A (en) * | 1989-10-30 | 1991-07-02 | Mckeighen James F | Golf club head |
USRE34925E (en) * | 1989-10-30 | 1995-05-02 | Mckeighen James F | Golf club head |
US5090702A (en) * | 1990-01-31 | 1992-02-25 | Taylor Made Company, Inc. | Golf club head |
US5505450A (en) * | 1990-02-02 | 1996-04-09 | Stuff; Alfred O. | Golf club heads with means for imparting corrective action |
US5318300A (en) * | 1990-10-16 | 1994-06-07 | Callaway Golf Company | Metal wood golf club with variable faceplate thickness |
US5180166A (en) * | 1990-10-16 | 1993-01-19 | Callaway Golf Company | Hollow, metallic golf club head with dendritic structure |
US5611741A (en) * | 1990-10-16 | 1997-03-18 | Callaway Golf Company | Hollow, large, metallic, golf club head |
US5183255A (en) * | 1991-07-18 | 1993-02-02 | Antonious A J | Golf club with improved hosel construction |
US5423535A (en) * | 1991-09-28 | 1995-06-13 | Dunlop Slazenger International, Ltd. | Golf club heads with face plates of varying specific gravity |
US5417559A (en) * | 1991-10-15 | 1995-05-23 | Callaway Golf Company | Wax pattern mold |
US5221087A (en) * | 1992-01-17 | 1993-06-22 | Lisco, Inc. | Metal golf clubs with inserts |
US5292129A (en) * | 1992-01-23 | 1994-03-08 | Macgregor Golf Company | Reinforced metal golf club head |
US5213328A (en) * | 1992-01-23 | 1993-05-25 | Macgregor Golf Company | Reinforced metal golf club head |
US5429357A (en) * | 1992-05-01 | 1995-07-04 | Kabushiki Kaisha Endo Seisakusho | Golf clubhead and its method of manufacturing |
US5626530A (en) * | 1992-08-05 | 1997-05-06 | Callaway Golf Company | Golf club head with sole bevel indicia |
US5407202A (en) * | 1992-11-03 | 1995-04-18 | Igarashi; Lawrence Y. | Golf club with faceplate of titanium or other high strength, lightweight metal materials |
US5295689A (en) * | 1993-01-11 | 1994-03-22 | S2 Golf Inc. | Golf club head |
US5405137A (en) * | 1993-01-26 | 1995-04-11 | Taylor Made Golf Company, Inc. | Golf club head and insert |
US5397126A (en) * | 1993-02-26 | 1995-03-14 | Vardon Golf Company, Inc. | Metal wood golf club with true heel and toe weighting |
US5397127A (en) * | 1993-04-12 | 1995-03-14 | The Yokohama Rubber Co., Ltd. | Wood type golf club head |
US5766092A (en) * | 1993-04-16 | 1998-06-16 | Taylor Made Golf Company | "Iron"-type golf club head |
US5304945A (en) * | 1993-04-19 | 1994-04-19 | At&T Bell Laboratories | Low-distortion feed-forward amplifier |
US5522593A (en) * | 1993-05-31 | 1996-06-04 | Kabushiki Kaisha Endo Seisakusho | Golf club head |
US5390924A (en) * | 1993-10-13 | 1995-02-21 | Antonious; Anthony J. | Iron-type gold club head with improved weight distribution at the rear club face and upper sole of the club head |
US5401021A (en) * | 1993-10-22 | 1995-03-28 | Vardon Golf Company, Inc. | Set of golf club irons with enlarged faces |
US5527034A (en) * | 1993-11-30 | 1996-06-18 | Goldwin Golf U.S.A., Inc. | Golf club and method of manufacture |
US5395113A (en) * | 1994-02-24 | 1995-03-07 | Antonious; Anthony J. | Iron type golf club with improved weight configuration |
US5497993A (en) * | 1994-03-14 | 1996-03-12 | Shan; Shiau S. | Structure of golf club head |
US5505453A (en) * | 1994-07-20 | 1996-04-09 | Mack; Thomas E. | Tunable golf club head and method of making |
US5762567A (en) * | 1994-07-25 | 1998-06-09 | Antonious; Anthony J. | Metal wood type golf club head with improved weight distribution and configuration |
US5482279A (en) * | 1994-07-25 | 1996-01-09 | Antonious; Anthony J. | Golf club metal wood-type head with improved perimeter structure and weight configuration |
US5524331A (en) * | 1994-08-23 | 1996-06-11 | Odyssey Sports, Inc. | Method for manufacturing golf club head with integral inserts |
US5711722A (en) * | 1995-04-09 | 1998-01-27 | Bridgestone Sports Co., Ltd. | Golf club head |
US5709617A (en) * | 1995-07-27 | 1998-01-20 | The Yokohama Rubber Co., Ltd. | Wood type golf club head |
US5611742A (en) * | 1995-08-04 | 1997-03-18 | Kabushiki Kaisha Endo Seisakusho | Wood-type golf club head |
US5709614A (en) * | 1995-09-07 | 1998-01-20 | The Yokohama Rubber Co., Ltd. | Golf club head and method of manufacturing the same |
US5890973A (en) * | 1995-11-17 | 1999-04-06 | Gamble; Christopher L. | Golf club |
USD379393S (en) * | 1995-12-01 | 1997-05-20 | Karsten Manufacturing Corporation | Golf club head |
US5595552A (en) * | 1995-12-15 | 1997-01-21 | Karsten Manufacturing Corp. | Golf club head with tuning and vibration control means |
US5755624A (en) * | 1996-01-22 | 1998-05-26 | Callaway Golf Company | Selectively balanced golf club heads and method of head selection |
US5863261A (en) * | 1996-03-27 | 1999-01-26 | Demarini Sports, Inc. | Golf club head with elastically deforming face and back plates |
US5766094A (en) * | 1996-06-07 | 1998-06-16 | Lisco Inc. | Face inserts for golf club heads |
US5716292A (en) * | 1996-07-24 | 1998-02-10 | Huang; Hui Ming | Golf club head |
US5753170A (en) * | 1996-09-20 | 1998-05-19 | Muang; Mui Ming | Manufacturing process and structure of a golf club head |
US6338683B1 (en) * | 1996-10-23 | 2002-01-15 | Callaway Golf Company | Striking plate for a golf club head |
US5873795A (en) * | 1997-01-21 | 1999-02-23 | Wilson Sporting Goods Co. | Iron-type golf clubhead with optimized point of least rigidity |
US5766095A (en) * | 1997-01-22 | 1998-06-16 | Antonious; Anthony J. | Metalwood golf club with elevated outer peripheral weight |
US5709615A (en) * | 1997-01-29 | 1998-01-20 | Liang; Long-Cherng | Golf club head with a hitting face plate and a club neck which are integrally formed with each other and forming method therefor |
US5743813A (en) * | 1997-02-19 | 1998-04-28 | Chien Ting Precision Casting Co., Ltd. | Golf club head |
US5718641A (en) * | 1997-03-27 | 1998-02-17 | Ae Teh Shen Co., Ltd. | Golf club head that makes a sound when striking the ball |
US5888148A (en) * | 1997-05-19 | 1999-03-30 | Vardon Golf Company, Inc. | Golf club head with power shaft and method of making |
US5873791A (en) * | 1997-05-19 | 1999-02-23 | Varndon Golf Company, Inc. | Oversize metal wood with power shaft |
USD406294S (en) * | 1997-10-09 | 1999-03-02 | Burrows Bruce D | Iron-type head for a golf club |
US6248025B1 (en) * | 1997-10-23 | 2001-06-19 | Callaway Golf Company | Composite golf club head and method of manufacturing |
US5908357A (en) * | 1997-10-30 | 1999-06-01 | Hsieh; Chih-Ching | Golf club head with a shock absorbing arrangement |
USD411272S (en) * | 1997-11-11 | 1999-06-22 | Burrows Bruce D | Iron-type head for a golf club |
US20030064823A1 (en) * | 2001-09-28 | 2003-04-03 | Akio Yamamoto | Golf clubhead |
US6755627B2 (en) * | 2002-02-01 | 2004-06-29 | Samsung Electronics Co., Ltd. | Linear compressor |
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