US3863932A - Weighted wood golf club - Google Patents

Weighted wood golf club Download PDF

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Publication number
US3863932A
US3863932A US362004A US36200473A US3863932A US 3863932 A US3863932 A US 3863932A US 362004 A US362004 A US 362004A US 36200473 A US36200473 A US 36200473A US 3863932 A US3863932 A US 3863932A
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insert
recess
club
golf club
resin
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US362004A
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Arthur J Lezatte
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Wilson Sporting Goods Co
BankBoston NA
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Wilson Sporting Goods Co
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Priority to US362004A priority Critical patent/US3863932A/en
Priority to GB3724773A priority patent/GB1402796A/en
Priority to ZA00735373A priority patent/ZA735373B/en
Priority to CA178,505A priority patent/CA982172A/en
Priority to JP48110267A priority patent/JPS5213457B2/ja
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Assigned to FIRST NATIONAL BANK OF BOSTON, THE, AS AGENT reassignment FIRST NATIONAL BANK OF BOSTON, THE, AS AGENT ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: WILSON SPORTING GOODS CO.
Assigned to FIRST NATIONAL BANK OF CHICAGO THE, AS AGENT reassignment FIRST NATIONAL BANK OF CHICAGO THE, AS AGENT SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FIRST NATIONAL BANK OF BOSTON THE, AS AGENT
Assigned to CONNECTICUT BANK AND TRUST COMPANY, NATIONAL ASSOCIATION, AS TRUSTEE, THE, reassignment CONNECTICUT BANK AND TRUST COMPANY, NATIONAL ASSOCIATION, AS TRUSTEE, THE, SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WILSON SPORTING GOODS CO.,
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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
    • 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
    • A63B53/0416—Heads having an impact surface provided by a face insert
    • 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
    • A63B53/0441—Heads with visual indicators for aligning the golf club
    • 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
    • A63B53/00—Golf clubs
    • A63B53/04—Heads
    • A63B53/0466—Heads wood-type
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
    • 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
    • A63B53/0416—Heads having an impact surface provided by a face insert
    • A63B53/042—Heads having an impact surface provided by a face insert the face insert consisting of a material different from that of the head
    • A63B53/0425—Heads having an impact surface provided by a face insert the face insert consisting of a material different from that of the head the face insert comprising two or more different materials

Definitions

  • weighting means have been suggested in the prior art for reallocating the mass of the club head, such weighting means usually taking the form of a heavy metal slug which is located beneath the sole plate in various positions. It has been found, however, that the positioning of weights in this manner does not always result in improving the energy transfer between a golf wood head and the golf ball. Possibly, this is due to the fact that the line of action ofthe centers of gravity of the ball and the club head are not in line with the theoretical flight path so that an inefficient collision results between the head and the ball.
  • the present invention provides an improved woodtype golf club in which the club head is provided with a conventional recess in which an insert is tightly received.
  • the configuration of the insert differs from conventional inserts in that it has a .bore therein at the inner extremity of which there is a shallow recess.
  • a weighting disc composed of a dense metal such as a tungsten alloy or the like overlies and closes off this shallow recess.
  • a layer of adhesive is provided in the shallow recess to secure the disc thereagainst.
  • the bore in the insert has a flared portion of increased diameter spaced from the striking face, and a layer of impact resistant resin fills this bore about the disc and provides the striking face at the forward edge of the insert.
  • the golf club may also be provided with an annular groove in the insert between the shallow recess and the striking face for receiving an additional amount of resin to securely lock the impact resistant resin within the insert.
  • the procedural steps involved in making the improved golf club of the present invention consist of positioning the weighting disc about the shallow recess of the insert and adhesively securing the two together. This is followed by pouring in an impact resistant resin into the cavity provided in the recess so that the resin sets and solidifies about the weighting disc confined therein. The resin expands slightly on setting, so that it completely fills the recess in the insert and is locked in place. This final step consists in grinding or otherwise shaping the striking face of the insert to conform it to the desired radius of the golf club head.
  • FIG. 1 is a fragmentary side elevational view of the improved golf club of the present invention
  • FIG. 2 is a fragmentary front elevational view of the golf club of the present invention
  • FIG. 3 is a fragmentary plan view of the golf club head of the present invention.
  • FIG. 4 is an exploded view on an enlarged scale of the insert of the present invention, with the parts being tilted somewhat for showing the configuration more specifically;
  • FIG. 5 is a fragmentary cross-sectional view on an enlarged scale of the insert of the present invention in the form in which it is received within the golf club head.
  • reference numeral 10 indicates generally a golf club of the wood type, the specific club being illustrated being a No. 1 wood although it will be evident that the invention is also applicable to other wood clubs having different angles of inclination on the striking faces.
  • the golf club 10 may be composed of a laminated construction as is common in the prior art and it includes a head I] having a striking face 12 of relatively large radius of curvature, usually on the order of lOl z inches. Disposed within a suitable wedge-shaped recess in the striking face 12 is a wedge-shaped insert 13 which extends from the sole ofthe club to the upper portion of the striking face in the conventional manner.
  • a set of grooves 14 is provided across the insert 13 as well as across the adjoining portions of the striking face 12 on either side of the insert 13.
  • the club head 11 also includes a neck portion 15 which is received within a neck collar 16 which also receives, at its opposite end, a shaft 17.
  • the insert 13 has a relatively deep bore 18 which proceeds inwardly into the insert 13 from the striking face thereof.
  • An annular groove 19 is formed in a medial portion of the bore 18 to serve as an additional locking means for the impact resistant resin which is poured into the bore, as will be apparent from a succeeding portion of this description.
  • the bore 18 is outwardly flared as indicated at reference numeral 20 by a few degrees or so to serve as an additional means for locking the impact resistant resin within the bore to resist disengagement of the resin from within the bore.
  • the innermost end of the bore is formed with a relatively shallow recess 21 and the bore also has an annular flange surface 22.
  • a decorative washer 23 composed of brass or the like is positioned along the annular flange 22 in surrounding relationship to a disc 24 composed of a dense metal such as a sintered, highly placed therearound, the remaining void space is filled by means of an impact resistant resin layer 26.
  • the impact resistant resin may be transparent material such as an epoxy resin or other suitable high impact material such as a polycarbonate, a polyester, or a polyimide resin.
  • an impact resistant epoxy resin undergoes a slight expansion so that the resin may extend beyond the confines of the striking face of the insert. Any such excess can be removed by grinding, machining, or other means to provide a striking face 27 having a relatively large radius of curvature such as /2 inches or so.
  • the grooves 14 can be scribed in the striking face of the resin 26 as well as in the adjoining portions of the club head.
  • the disc 24 is located immediately behind the proper point of impact on the striking face 27.
  • the center of gravity of the club head will be located at a distance A from the tangent to the leading edge of the club face, as illustrated in that figure.
  • the center of gravity of the club head lies at a distance B from the leading edge of the club face and is substantially in the plane which bisects the shaft 17.
  • the positioning of the disc 24 also serves to change the moment of inertia of the club head about its principal axes. These axes are identified in FIGS. 1 and 3 as the .r, y and z axes.
  • the ideal weight distribution would be such as to increase the moment of inertia about the center of gravity in the .tz plane, i.e., in a plane parallel-t0 the ground and passing through the vertical level of the center of gravity of the club head. With such a weight distribution, the club head would be the most stable during a swing and there would be less tendency to hit off-line shots.
  • the location of the disc 24 in the insert as indicated serves to increase the moment of inertia in this x-z plane, thereby making the club head more stable than a conventional head.
  • the movement of the center of gravity of the head has been found to improve significantly the energy transfer between the head of the club and the golf ball when properly struck.
  • the line of action of the centers of gravity of the ball and the club head are more directly in line with the theoretical flight path resulting in a more efficient collision between the club head and the ball.
  • Another advantage is achieved in the combined coefficient of restitution between the ball and the insert.
  • the use of the dense weighting disc in the hitting area increases the amount of energy available in a measurable quantity.
  • a wood-type golf club comprising a club head having a recess in the striking area, an insert filling said recess, a dense disk weighting means within said insert, a layer of an impact resistant resin within said insert covering one face and at least a portion of the periphery of said disk, the layer of resin having a smoothly contoured, uninterrupted surface forming part of the striking face of said club, the disk weighting means being positioned to provide a center of gravity for said club head which is closer to the leading edge of the club face than in the absence of said weighting means.
  • the golf club of claim 1 which includes an annular recess in said insert forwardly of said weighting means for anchoring said layer of resin within said annular recess.
  • a wood-type golf club comprising a club head having a wedge'shaped recess therein in the striking area, a wedge-shaed insert received within said recess, said insert having a bore with a relatively shallow recess at its innermost extremity, a weighting disc overlying and closing off said shallow recess, a layer of adhesive in said shallow recess securing said disc thereagainst, said bore in said insert having a flared portion of increased diameter spaced from said striking face, and a layer of impact resistant resin filling said bore about said disc and having a large diameter radius surface forming the striking area of said club.

Abstract

An improved wood-type golf club having a club head in which a recess is formed, the recess being filled with an insert, a dense weighting means within the insert, and a layer of an impact resistant resin within the insert holding the weighting means therein, the weighting means being positioned to provide a center of gravity for the club head which is closer to the leading edge of the club face than in the absence of the weighting means.

Description

United States Patent 11 1 1111 3,863,932
Lezatte 1 Feb. 4, 1975 1 WEIGHTED WOOD GOLF CLUB 3,172,667 3/1965 Baker 273/173 3,305,235 2/1967 Williams 273/169 X [75] Inventor- 3 Lem, DOWN" Grove 3,652,094 3/1972 016w 273/173 x FOREIGN PATENTS OR APPLICATIONS [73] Ass'gnee' g f Rver 963,652- 7/1964 Great Britain 273/173 [22] Filed: May 21, 1973 Primary Examiner-Richard J. Apley Attorney, Agent, or Firm-Hill, Gross, Simpson, Van [21] Appl' L004 Santen, Steadman, Chiara & Simpson [52] U.S. Cl. 273/169, 273/167 F, 273/173 [57] ABSTRACT [51] Int. Cl A63b 53/04 An im proved wood-type golf club havmg a club head Fleld of Search R, in a recess is e the recess i g with an insert, a dense weighting means within the in- [56] References C'ted sert, and a layer of an impact resistant resin within the UNITED STATES PATENTS insert holding the weighting means therein, the 1,467,435 9/1923 Kinnear 273/173 X weighting means being positioned to provide a center 1,525,352 2/1925 Aitken of gravity for the club head which is closer to the lead- 1,543,691 6/1925 Beat.....
ing edge of the club face than in the absence of the 1,562,956 11/1925 Guerne....
, weighting means. 1,659,272 2/1928 Lmk I 1,840,451 1/1932 .lansky 273/173 7 Claims, 5 Drawlng Figures /5 T X 4 i i In Ta T T 1 3 A5 A5 Z I WEIGHTED WOOD GOLF CLUB BACKGROUND OF THE INVENTION l. Field of the Invention This invention is in the field of wood-type golf clubs having weighting means which move the center of gravity for the club head forward and preferably into the plane which bisects the shaft of the club.
2. Description of the Prior Art The problem of proper transfer of momentum from a golf club to the impact of a golf ball is one which has occupied the attention of golf club manufacturers for many years. The magnitude of the problem can be appreciated when it is realized that a golf club head may be moving at a speed in excess of 160 feet per second when it strikes a ball. The time of impact between the golf club and the ball has been estimated to be less than one millisecond so that there is a tremendous amount of energy absorption in a very brief period of time. In order for this transfer of energy to result in an adequate movement of the ball in terms of distance and direction, the effective mass of the club head should be properly positioned with respect to the area of impact on the ball.
Various weighting means have been suggested in the prior art for reallocating the mass of the club head, such weighting means usually taking the form of a heavy metal slug which is located beneath the sole plate in various positions. It has been found, however, that the positioning of weights in this manner does not always result in improving the energy transfer between a golf wood head and the golf ball. Possibly, this is due to the fact that the line of action ofthe centers of gravity of the ball and the club head are not in line with the theoretical flight path so that an inefficient collision results between the head and the ball.
SUMMARY OF THE INVENTION The present invention provides an improved woodtype golf club in which the club head is provided with a conventional recess in which an insert is tightly received. The configuration of the insert, however, differs from conventional inserts in that it has a .bore therein at the inner extremity of which there is a shallow recess. A weighting disc composed of a dense metal such as a tungsten alloy or the like overlies and closes off this shallow recess. A layer of adhesive is provided in the shallow recess to secure the disc thereagainst. The bore in the insert has a flared portion of increased diameter spaced from the striking face, and a layer of impact resistant resin fills this bore about the disc and provides the striking face at the forward edge of the insert. The golf club may also be provided with an annular groove in the insert between the shallow recess and the striking face for receiving an additional amount of resin to securely lock the impact resistant resin within the insert.
The procedural steps involved in making the improved golf club of the present invention consist of positioning the weighting disc about the shallow recess of the insert and adhesively securing the two together. This is followed by pouring in an impact resistant resin into the cavity provided in the recess so that the resin sets and solidifies about the weighting disc confined therein. The resin expands slightly on setting, so that it completely fills the recess in the insert and is locked in place. This final step consists in grinding or otherwise shaping the striking face of the insert to conform it to the desired radius of the golf club head.
BRIEF DESCRIPTION OF THE DRAWINGS Other objects, features and advantages of the inven tion will be readily apparent from the following description of certain preferred embodiments thereof, taken in conjunction with the accompanying drawings, although variations and modifications may be effected without departing from the spirit and scope ofthe novel concepts of the disclosure. and in which:
FIG. 1 is a fragmentary side elevational view of the improved golf club of the present invention;
FIG. 2 is a fragmentary front elevational view of the golf club of the present invention;
FIG. 3 is a fragmentary plan view of the golf club head of the present invention;
FIG. 4 is an exploded view on an enlarged scale of the insert of the present invention, with the parts being tilted somewhat for showing the configuration more specifically; and
FIG. 5 is a fragmentary cross-sectional view on an enlarged scale of the insert of the present invention in the form in which it is received within the golf club head.
DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, reference numeral 10 indicates generally a golf club of the wood type, the specific club being illustrated being a No. 1 wood although it will be evident that the invention is also applicable to other wood clubs having different angles of inclination on the striking faces. The golf club 10 may be composed of a laminated construction as is common in the prior art and it includes a head I] having a striking face 12 of relatively large radius of curvature, usually on the order of lOl z inches. Disposed within a suitable wedge-shaped recess in the striking face 12 is a wedge-shaped insert 13 which extends from the sole ofthe club to the upper portion of the striking face in the conventional manner. A set of grooves 14 is provided across the insert 13 as well as across the adjoining portions of the striking face 12 on either side of the insert 13. The club head 11 also includes a neck portion 15 which is received within a neck collar 16 which also receives, at its opposite end, a shaft 17.
The construction of the insert 13, per se, is best illustrated in FIGS. 4 and 5 of the drawings. As there illustrated, the insert 13 has a relatively deep bore 18 which proceeds inwardly into the insert 13 from the striking face thereof. An annular groove 19 is formed in a medial portion of the bore 18 to serve as an additional locking means for the impact resistant resin which is poured into the bore, as will be apparent from a succeeding portion of this description. lnwardly of the annular groove 19, the bore 18 is outwardly flared as indicated at reference numeral 20 by a few degrees or so to serve as an additional means for locking the impact resistant resin within the bore to resist disengagement of the resin from within the bore.
The innermost end of the bore is formed with a relatively shallow recess 21 and the bore also has an annular flange surface 22. A decorative washer 23 composed of brass or the like is positioned along the annular flange 22 in surrounding relationship to a disc 24 composed of a dense metal such as a sintered, highly placed therearound, the remaining void space is filled by means of an impact resistant resin layer 26. For purposes of eye appeal, the impact resistant resin may be transparent material such as an epoxy resin or other suitable high impact material such as a polycarbonate, a polyester, or a polyimide resin.
ln setting, an impact resistant epoxy resin undergoes a slight expansion so that the resin may extend beyond the confines of the striking face of the insert. Any such excess can be removed by grinding, machining, or other means to provide a striking face 27 having a relatively large radius of curvature such as /2 inches or so. At that time, the grooves 14 can be scribed in the striking face of the resin 26 as well as in the adjoining portions of the club head.
The disc 24 is located immediately behind the proper point of impact on the striking face 27. Referring to FIG. 3, if the insert 13 is made ofa completely homogeneous material, that is, without the combination of the insert and the impact resistant resin, the center of gravity of the club head will be located at a distance A from the tangent to the leading edge of the club face, as illustrated in that figure. With the improvements of the present invention, however, the center of gravity of the club head lies at a distance B from the leading edge of the club face and is substantially in the plane which bisects the shaft 17.
The positioning of the disc 24 also serves to change the moment of inertia of the club head about its principal axes. These axes are identified in FIGS. 1 and 3 as the .r, y and z axes. The ideal weight distribution would be such as to increase the moment of inertia about the center of gravity in the .tz plane, i.e., in a plane parallel-t0 the ground and passing through the vertical level of the center of gravity of the club head. With such a weight distribution, the club head would be the most stable during a swing and there would be less tendency to hit off-line shots. The location of the disc 24 in the insert as indicated serves to increase the moment of inertia in this x-z plane, thereby making the club head more stable than a conventional head.
To illustrate the effect of positioning the weighting disc in the center of the face insert, some measurements were made with a No. 1 wood of conventional design. It was found that the center of gravity of the wood club with a conventional insert existed at a point which was 1 -3/l6 inches from the leading edge of the sole, /8 of an inch vertically from the leading edge, and 9/32 of an inch behind the axis of the shaft. When the same club was provided with an insert including a tungsten alloy weighting disc of an inch in outer diameter and /8 inch thick, weighing approximately 9/16 of an ounce, the center of gravity of the club head was found to exist at a point which was /8 of an inch from the leading edge of the sole, 13/16 of an inch vertically from the leading edge, and only 1/32 of an inch behind the axis of the shaft.
The movement of the center of gravity of the head has been found to improve significantly the energy transfer between the head of the club and the golf ball when properly struck. The line of action of the centers of gravity of the ball and the club head are more directly in line with the theoretical flight path resulting in a more efficient collision between the club head and the ball. Another advantage is achieved in the combined coefficient of restitution between the ball and the insert. The use of the dense weighting disc in the hitting area increases the amount of energy available in a measurable quantity.
By positioning the weighting disc with its centerline coinciding with the center of the proper hitting area on the striking face, more mass is concentrated in precisely the region in which it does the most good. There is a corresponding lesser tendency to have a component of the impact force at an angle other than normal to the vertical tangent plane of the ball, so that the tendency to hit shots off line is somewhat reduced.
It should be evident that various modifications can be made to the described embodiments without departing from the scope of the present invention.
I claim as my invention:
1. A wood-type golf club comprising a club head having a recess in the striking area, an insert filling said recess, a dense disk weighting means within said insert, a layer of an impact resistant resin within said insert covering one face and at least a portion of the periphery of said disk, the layer of resin having a smoothly contoured, uninterrupted surface forming part of the striking face of said club, the disk weighting means being positioned to provide a center of gravity for said club head which is closer to the leading edge of the club face than in the absence of said weighting means.
2. The golf club of claim 1 in which said weighting means is positioned so that center of gravity is substantially in the plane which bisects the shaft of the club.
3. The golf club of claim 1 which includes an annular recess in said insert forwardly of said weighting means for anchoring said layer of resin within said annular recess.
4. The golf club of claim 1 in which said insert includes an angular taper in said recess for locking said layer of resin therein, said recess having a larger diameter at its base than at its striking face.
5. The golf club of claim 1 in which said resin is an epoxy resin.
6. A wood-type golf club comprising a club head having a wedge'shaped recess therein in the striking area, a wedge-shaed insert received within said recess, said insert having a bore with a relatively shallow recess at its innermost extremity, a weighting disc overlying and closing off said shallow recess, a layer of adhesive in said shallow recess securing said disc thereagainst, said bore in said insert having a flared portion of increased diameter spaced from said striking face, and a layer of impact resistant resin filling said bore about said disc and having a large diameter radius surface forming the striking area of said club.
7. The golf club of claim 6 which includes an annular groove in said insert between said shallow recess and said striking face for receiving said resin in locking engageme nt.

Claims (7)

1. A wood-type golf club comprising a club head having a recess in the striking area, an insert filling said recess, a dense disk weighting means within said insert, a layer of an impact resistant resin within said insert covering one face and at least a portion of the periphery of said disk, the layer of resin having a smoothly contoured, uninterrupted surface forming part of the striking face of said club, the disk weighting means being positioned to provide a center of gravity for said club head which is closer to the leading edge of the club face than in the absence of said weighting means.
2. The golf club of claim 1 in which said weighting means is positioned so that center of gravity is substantially in the plane which bisects the shaft of the club.
3. The golf club of claim 1 which includes an annular recess in said insert forwardly of said weighting means for anchoring said layer of resin within said annular recess.
4. The golf club of claim 1 in which said insert includes an angular taper in said recess for locking said layer of resin therein, said recess having a larger diameter at its base than at its striking face.
5. The golf club of claim 1 in which said resin is an epoxy resin.
6. A wood-type golf club comprising a club head having a wedge-shaped recess therein in the striking area, a wedge-shaed insert received within said recess, said insert having a bore with a relatively shallow recess at its innermost extremity, a weighting disc overlying and closing off said shallow recess, a layer of adhesive in said shallow recess securing said disc thereagainst, said bore in said insert having a flared portion of increased diameter spaced from said striking face, and a layer of impact resistant resin filling said bore about said disc and having a large diameter radius surface forming the striking area of said club.
7. The golf club of claim 6 which includes an annular groove in said insert between said shallow recess and said striking face for receiving said resin in locking engagement.
US362004A 1973-05-21 1973-05-21 Weighted wood golf club Expired - Lifetime US3863932A (en)

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Application Number Priority Date Filing Date Title
US362004A US3863932A (en) 1973-05-21 1973-05-21 Weighted wood golf club
GB3724773A GB1402796A (en) 1973-05-21 1973-08-06 Golf clubs
ZA00735373A ZA735373B (en) 1973-05-21 1973-08-07 Weighted wood golf club
CA178,505A CA982172A (en) 1973-05-21 1973-08-10 Weighted wood golf club
JP48110267A JPS5213457B2 (en) 1973-05-21 1973-10-02

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JP (1) JPS5213457B2 (en)
CA (1) CA982172A (en)
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ZA (1) ZA735373B (en)

Cited By (60)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3989248A (en) * 1974-12-26 1976-11-02 Pepsico, Inc. Golf club having insert capable of elastic flexing
US4213613A (en) * 1977-12-29 1980-07-22 Nygren Gordon W Golf club head with center of gravity near its striking face
US4498672A (en) * 1982-04-05 1985-02-12 Bulla John G Golf club head with flexure frequency matched with distortion-relaxation frequency of ball
US4674746A (en) * 1984-03-27 1987-06-23 Benoit William R Golf club
US5076585A (en) * 1990-12-17 1991-12-31 Harry Bouquet Wood golf clubhead assembly with peripheral weight distribution and matched center of gravity location
US5195747A (en) * 1992-05-26 1993-03-23 Choy Jung Soo Golf club
US5228615A (en) * 1990-02-21 1993-07-20 Yamaha Corporation Method of manufacturing golf head
FR2700702A1 (en) * 1993-01-26 1994-07-29 Taylor Made Golf Co Club head with an attached striking face
US5409229A (en) * 1992-08-05 1995-04-25 Callaway Golf Company Golf club head with audible vibration attenuation
US5464218A (en) * 1994-07-07 1995-11-07 Callaway Golf Company Golf putter head with undercut back cavity and peripheral weighting
US5580322A (en) * 1995-06-15 1996-12-03 Bouquet; Harry Wood golf clubhead assembly with peripheral weight on clubface
USD377818S (en) * 1996-01-16 1997-02-04 Callaway Golf Company Golf putter head with multi-arcuate configuration
USD378113S (en) * 1996-01-16 1997-02-18 Callaway Golf Company Golf putter head with fluted rear side and stepped top wall
USD385933S (en) * 1996-01-16 1997-11-04 Callaway Golf Company Golf putter head with recessed and fluted rear side
USD388851S (en) 1996-01-16 1998-01-06 Callaway Golf Company Golf putter head with recessed and fluted rear side and stepped top wall
US5776010A (en) * 1997-01-22 1998-07-07 Callaway Golf Company Weight structure on a golf club head
US5816936A (en) * 1994-01-24 1998-10-06 Daiwa Seiko, Inc. Golf club head and method of manufacturing the same
USD401651S (en) 1997-10-31 1998-11-24 Callaway Golf Company Golf putter head and angled hosel
USD402343S (en) 1997-10-31 1998-12-08 Callaway Golf Company Golf putter head
USD402344S (en) 1997-10-28 1998-12-08 Callaway Golf Company Golf putter head with curved flutes and a curved hosel
USD402722S (en) 1997-10-28 1998-12-15 Callaway Golf Company Golf putter head with flutes and angled hosel
US5879243A (en) * 1996-02-23 1999-03-09 Hackman; Lloyd E. Weight forward golf club head
USD407445S (en) 1997-03-10 1999-03-30 Callaway Golf Company Golf putter head with recessed and curved and fluted rear side
US5944619A (en) * 1996-09-06 1999-08-31 Acushnet Company Golf club with an insert on the striking surface
USD414830S (en) 1997-10-28 1999-10-05 Callaway Golf Company Golf putter with angled hosel and recess-intercepting, curved flutes at rear side
US5972144A (en) * 1998-03-11 1999-10-26 Hsu; Tsai-Fu Method for manufacturing golf club putter heads
USD428088S (en) * 1998-12-23 2000-07-11 Acushnet Company Insert on the striking surface of a golf club head
US6231458B1 (en) 1996-09-06 2001-05-15 Acushnet Company Golf club head with an insert on the striking surface
US6334818B1 (en) 1996-09-06 2002-01-01 Acushnet Company Golf club head with an insert on the striking surface
US6508722B1 (en) 2000-01-31 2003-01-21 Acushnet Company Golf club head and improved casting method therefor
US6592469B2 (en) 2001-01-25 2003-07-15 Acushnet Company Golf club heads with back cavity inserts and weighting
US6595057B2 (en) 2000-04-18 2003-07-22 Acushnet Company Golf club head with a high coefficient of restitution
US20030195058A1 (en) * 2000-04-18 2003-10-16 Rice Scott A. Metal wood club with improved hitting face
US20030199335A1 (en) * 2000-04-18 2003-10-23 Laurent Bissonnette Golf club head with variable flexural stiffness for controlled ball flight and trajectory
US20040166960A1 (en) * 2003-02-24 2004-08-26 K.K. Endo Seisakusho Golf club
US20040176181A1 (en) * 2000-04-18 2004-09-09 Meyer Jeffrey W. Composite metal wood club
US20050009633A1 (en) * 2000-04-18 2005-01-13 Rice Scott A. Metal wood club with improved hitting face
US20050009634A1 (en) * 2000-04-18 2005-01-13 Rice Scott A. Metal wood club with improved hitting face
US20050020378A1 (en) * 2003-07-11 2005-01-27 Krumme John F. Faceplate backings and monolithic inserts for golf clubs
US20050101404A1 (en) * 2000-04-19 2005-05-12 Long D. C. Golf club head with localized grooves and reinforcement
US20050164806A1 (en) * 2004-01-23 2005-07-28 Karsten Manufacturing Corp. Golf club head having a bi-polymer face insert and method of making same
US20060068932A1 (en) * 2000-04-18 2006-03-30 Acushnet Company Metal wood club with improved hitting face
US20060166757A1 (en) * 2005-01-25 2006-07-27 Butler Joseph H Jr Reconfigurable golf club and method
US20060189410A1 (en) * 2000-04-18 2006-08-24 Soracco Peter L Metal wood club with improved hitting face
US20060293120A1 (en) * 2005-01-03 2006-12-28 Cackett Matthew T Golf Club with High Moment of Inertia
US20070054750A1 (en) * 2005-09-07 2007-03-08 Rice Scott A Metal wood club with improved hitting face
US20070202964A1 (en) * 2005-01-03 2007-08-30 Callaway Golf Company Golf club head
US20080020857A1 (en) * 2005-01-03 2008-01-24 Callaway Golf Company Golf club with high moment of inertia
US20080032820A1 (en) * 2005-01-03 2008-02-07 Callaway Golf Company Golf club head
US7367899B2 (en) 2000-04-18 2008-05-06 Acushnet Company Metal wood club with improved hitting face
US20080242441A1 (en) * 2007-03-27 2008-10-02 Well Jet International Co., Ltd. Golf club head and method for making it
US20090163293A1 (en) * 2005-01-03 2009-06-25 Callaway Golf Company Golf club head
US20100197425A1 (en) * 2003-05-01 2010-08-05 Clausen Karl A Metal wood club with improved hitting face
US20100255930A1 (en) * 2005-09-07 2010-10-07 Rice Scott A Metal wood club with improved hitting face
US20110034269A1 (en) * 2009-08-06 2011-02-10 Nike, Inc. Golf club head or other ball striking device having face insert material
US7935001B2 (en) 2000-04-18 2011-05-03 Acushnet Company Composite metal wood club
US20110143858A1 (en) * 2009-12-16 2011-06-16 Callaway Golf Company External weight for golf club head
US8517858B2 (en) 2000-04-18 2013-08-27 Acushnet Company Metal wood club
US9433835B2 (en) 2013-04-01 2016-09-06 Acushnet Company Golf club head with improved striking face
US20180256946A1 (en) * 2007-07-25 2018-09-13 Karsten Manufacturing Corporation Club head sets with varying characteristics and related methods

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US3989248A (en) * 1974-12-26 1976-11-02 Pepsico, Inc. Golf club having insert capable of elastic flexing
US4213613A (en) * 1977-12-29 1980-07-22 Nygren Gordon W Golf club head with center of gravity near its striking face
US4498672A (en) * 1982-04-05 1985-02-12 Bulla John G Golf club head with flexure frequency matched with distortion-relaxation frequency of ball
US4674746A (en) * 1984-03-27 1987-06-23 Benoit William R Golf club
US5228615A (en) * 1990-02-21 1993-07-20 Yamaha Corporation Method of manufacturing golf head
US5076585A (en) * 1990-12-17 1991-12-31 Harry Bouquet Wood golf clubhead assembly with peripheral weight distribution and matched center of gravity location
US5195747A (en) * 1992-05-26 1993-03-23 Choy Jung Soo Golf club
US5605511A (en) * 1992-08-05 1997-02-25 Callaway Golf Company Golf club head with audible vibration attenuation
US5704849A (en) * 1992-08-05 1998-01-06 Callaway Golf Company Golf club head with audible vibration attenuation
US5409229A (en) * 1992-08-05 1995-04-25 Callaway Golf Company Golf club head with audible vibration attenuation
US5405137A (en) * 1993-01-26 1995-04-11 Taylor Made Golf Company, Inc. Golf club head and insert
FR2700702A1 (en) * 1993-01-26 1994-07-29 Taylor Made Golf Co Club head with an attached striking face
US5816936A (en) * 1994-01-24 1998-10-06 Daiwa Seiko, Inc. Golf club head and method of manufacturing the same
US5464218A (en) * 1994-07-07 1995-11-07 Callaway Golf Company Golf putter head with undercut back cavity and peripheral weighting
US5580322A (en) * 1995-06-15 1996-12-03 Bouquet; Harry Wood golf clubhead assembly with peripheral weight on clubface
USD377818S (en) * 1996-01-16 1997-02-04 Callaway Golf Company Golf putter head with multi-arcuate configuration
USD378113S (en) * 1996-01-16 1997-02-18 Callaway Golf Company Golf putter head with fluted rear side and stepped top wall
USD385933S (en) * 1996-01-16 1997-11-04 Callaway Golf Company Golf putter head with recessed and fluted rear side
USD388851S (en) 1996-01-16 1998-01-06 Callaway Golf Company Golf putter head with recessed and fluted rear side and stepped top wall
US5879243A (en) * 1996-02-23 1999-03-09 Hackman; Lloyd E. Weight forward golf club head
US5944619A (en) * 1996-09-06 1999-08-31 Acushnet Company Golf club with an insert on the striking surface
US6231458B1 (en) 1996-09-06 2001-05-15 Acushnet Company Golf club head with an insert on the striking surface
US6334818B1 (en) 1996-09-06 2002-01-01 Acushnet Company Golf club head with an insert on the striking surface
US5776010A (en) * 1997-01-22 1998-07-07 Callaway Golf Company Weight structure on a golf club head
USD407445S (en) 1997-03-10 1999-03-30 Callaway Golf Company Golf putter head with recessed and curved and fluted rear side
USD402344S (en) 1997-10-28 1998-12-08 Callaway Golf Company Golf putter head with curved flutes and a curved hosel
USD402722S (en) 1997-10-28 1998-12-15 Callaway Golf Company Golf putter head with flutes and angled hosel
USD414830S (en) 1997-10-28 1999-10-05 Callaway Golf Company Golf putter with angled hosel and recess-intercepting, curved flutes at rear side
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USD401651S (en) 1997-10-31 1998-11-24 Callaway Golf Company Golf putter head and angled hosel
US5972144A (en) * 1998-03-11 1999-10-26 Hsu; Tsai-Fu Method for manufacturing golf club putter heads
USD428088S (en) * 1998-12-23 2000-07-11 Acushnet Company Insert on the striking surface of a golf club head
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US20030195058A1 (en) * 2000-04-18 2003-10-16 Rice Scott A. Metal wood club with improved hitting face
US20030199335A1 (en) * 2000-04-18 2003-10-23 Laurent Bissonnette Golf club head with variable flexural stiffness for controlled ball flight and trajectory
US8517858B2 (en) 2000-04-18 2013-08-27 Acushnet Company Metal wood club
US20040176181A1 (en) * 2000-04-18 2004-09-09 Meyer Jeffrey W. Composite metal wood club
US20050009633A1 (en) * 2000-04-18 2005-01-13 Rice Scott A. Metal wood club with improved hitting face
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US20060189410A1 (en) * 2000-04-18 2006-08-24 Soracco Peter L Metal wood club with improved hitting face
US7140975B2 (en) 2000-04-18 2006-11-28 Acushnet Company Gold club head with variable flexural stiffness for controlled ball flight and trajectory
US20060287132A1 (en) * 2000-04-18 2006-12-21 Meyer Jeffrey W Composite metal wood club
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US20080293515A1 (en) * 2000-04-18 2008-11-27 Rice Scott A Metal wood club with improved hitting face
US20090227391A1 (en) * 2000-04-18 2009-09-10 Meyer Jeffrey W Composite metal wood club
US20090023511A1 (en) * 2000-04-18 2009-01-22 Meyer Jeffrey W Composite metal wood club
US20090227389A1 (en) * 2000-04-18 2009-09-10 Meyer Jeffrey W Composite metal wood club
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US7520819B2 (en) 2000-04-18 2009-04-21 Acushnet Company Metal wood club with improved hitting face
US20050101404A1 (en) * 2000-04-19 2005-05-12 Long D. C. Golf club head with localized grooves and reinforcement
US8007372B2 (en) 2000-04-19 2011-08-30 Cobra Golf, Inc. Golf club head with localized grooves and reinforcement
US20110034272A1 (en) * 2000-04-19 2011-02-10 Cobra Golf, Incorporated Golf club head with localized grooves and reinforcement
US6592469B2 (en) 2001-01-25 2003-07-15 Acushnet Company Golf club heads with back cavity inserts and weighting
US20040166960A1 (en) * 2003-02-24 2004-08-26 K.K. Endo Seisakusho Golf club
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US8342982B2 (en) 2003-05-01 2013-01-01 Acushnet Company Metal wood club with improved hitting face
US20100197425A1 (en) * 2003-05-01 2010-08-05 Clausen Karl A Metal wood club with improved hitting face
US20050020378A1 (en) * 2003-07-11 2005-01-27 Krumme John F. Faceplate backings and monolithic inserts for golf clubs
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US20050164806A1 (en) * 2004-01-23 2005-07-28 Karsten Manufacturing Corp. Golf club head having a bi-polymer face insert and method of making same
US6951518B2 (en) * 2004-01-23 2005-10-04 Karsten Manufacturing Corporation Golf club head having a bi-polymer face insert and method of making same
US7674187B2 (en) 2005-01-03 2010-03-09 Callaway Golf Company Golf club with high moment of inertia
US20080032818A1 (en) * 2005-01-03 2008-02-07 Callaway Golf Company Golf club head
US20090075753A1 (en) * 2005-01-03 2009-03-19 Callaway Golf Company Golf club head
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US20090156326A1 (en) * 2005-01-03 2009-06-18 Callaway Golf Company Golf club head
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US20090163293A1 (en) * 2005-01-03 2009-06-25 Callaway Golf Company Golf club head
US20060293120A1 (en) * 2005-01-03 2006-12-28 Cackett Matthew T Golf Club with High Moment of Inertia
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US20080032820A1 (en) * 2005-01-03 2008-02-07 Callaway Golf Company Golf club head
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US20080020857A1 (en) * 2005-01-03 2008-01-24 Callaway Golf Company Golf club with high moment of inertia
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US7455598B2 (en) 2005-01-03 2008-11-25 Callaway Golf Company Golf club head
US7413517B2 (en) * 2005-01-25 2008-08-19 Butler Jr Joseph H Reconfigurable golf club and method
US20090069908A1 (en) * 2005-01-25 2009-03-12 Butler Jr Joseph H Methods for selecting golf club head configuration
US20060166757A1 (en) * 2005-01-25 2006-07-27 Butler Joseph H Jr Reconfigurable golf club and method
US20070054750A1 (en) * 2005-09-07 2007-03-08 Rice Scott A Metal wood club with improved hitting face
US20090258724A1 (en) * 2005-09-07 2009-10-15 Rice Scott A Metal wood club with improved hitting face
US20100255930A1 (en) * 2005-09-07 2010-10-07 Rice Scott A Metal wood club with improved hitting face
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US20080242441A1 (en) * 2007-03-27 2008-10-02 Well Jet International Co., Ltd. Golf club head and method for making it
US11465018B2 (en) * 2007-07-25 2022-10-11 Karsten Manufacturing Corporation Club head sets with varying characteristics and related methods
US20180256946A1 (en) * 2007-07-25 2018-09-13 Karsten Manufacturing Corporation Club head sets with varying characteristics and related methods
US8480512B2 (en) 2009-08-06 2013-07-09 Nike, Inc. Golf club head or other ball striking device having face insert material
US8157670B2 (en) * 2009-08-06 2012-04-17 Nike, Inc. Golf club head or other ball striking device having face insert material
US20110034269A1 (en) * 2009-08-06 2011-02-10 Nike, Inc. Golf club head or other ball striking device having face insert material
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Also Published As

Publication number Publication date
ZA735373B (en) 1975-03-26
JPS508632A (en) 1975-01-29
JPS5213457B2 (en) 1977-04-14
CA982172A (en) 1976-01-20
GB1402796A (en) 1975-08-13

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