WO2006098715A1 - Mechanical cushioning system for footwear - Google Patents
Mechanical cushioning system for footwear Download PDFInfo
- Publication number
- WO2006098715A1 WO2006098715A1 PCT/US2005/007877 US2005007877W WO2006098715A1 WO 2006098715 A1 WO2006098715 A1 WO 2006098715A1 US 2005007877 W US2005007877 W US 2005007877W WO 2006098715 A1 WO2006098715 A1 WO 2006098715A1
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- WO
- WIPO (PCT)
- Prior art keywords
- midsole
- strut members
- medial
- lateral
- degrees
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B7/00—Footwear with health or hygienic arrangements
- A43B7/14—Footwear with health or hygienic arrangements with foot-supporting parts
- A43B7/24—Insertions or other supports preventing the foot canting to one side , preventing supination or pronation
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
- A43B13/18—Resilient soles
- A43B13/181—Resiliency achieved by the structure of the sole
Definitions
- Footwear in particular athletic footwear, are expected to provide proper shock absorption and stability thereby preventing potential harmful effects of vigorous movements such as running and jumping on the wear's feet.
- the footwear industry has been developing athletic shoes in an effort to maximize shock absorption and stability while also maximizing comfort and durability.
- these goals are potentially in conflict with each other. For example, a shoe that provides adequate shock absorption and comfort may not provide sufficient stability.
- a basic understanding of the dynamics of running and the mechanisms of running injuries is important.
- a typical walking or running gait cycle involves two phases: (1) a stance phase, and (2) a swing phase.
- One foot contacts the support surface such as the ground and bears weight in the stance phase while the other foot is moving through the air and advances in the swing phase.
- the two phases are repetitive.
- the difference between the running and walking gait cycles is that at one point during the running cycle the person is airborne without bearing any weight, whereas the walking cycle does not have such an airborne point.
- the stance phase of a running gait cycle may be further divided into three periods: (1) the loading period, also called the impact and support period or the heel strike period, (2) the mid-stance period, also called the mid-stance and propulsion period, and (3) the toe-off period, also called the recovery period.
- the loading period begins with first contact of the heel with the running surface, followed by a controlled lowering of the forefoot to the running surface.
- the first contact of the heel typically occurs at the rear, outer part of the heel.
- the mid-stance period begins once the forefoot is in contact with the running surface.
- the contraction of the musculature of the leg generates power to propel the body forward.
- the heel progressively lifts and the forefoot flexes at the metatarsophalangeal joint.
- the foot disengages contact with the running surface and the foot becomes airborne.
- Pronation is a normal movement of the foot that occurs during the loading and mid- stance periods of the stance phase of the gait cycle.
- the heel of the foot is supinated and makes initial contact with the running surface as described earlier.
- the joint between the foot bones called the subtalar joint is unlocked, allowing pronation, a coordinated trip lane motion of the foot, to occur during the forefoot lowering events of the loading period of the stance phase.
- the coordinated triplane motion of the foot involves three planes of motion: (1) abduction, in which the front of the foot is turned outwards and away from the line of progression of the runner; (2) dorsiflexion, in which the front of the foot is angled upwards relative to the heel of the foot; and (3) eversion, in which the sole of the foot is turned outward relative to the heel of the foot.
- abduction in which the front of the foot is turned outwards and away from the line of progression of the runner
- dorsiflexion in which the front of the foot is angled upwards relative to the heel of the foot
- eversion in which the sole of the foot is turned outward relative to the heel of the foot.
- Supination typically follows pronation. As the body moves forward over the foot, the subtalar joint locks. This allows a reversal of the events that have occurred during the loading period to occur during the mid-stance period. Supination is a coordinated triplane motion of the foot, which involves three planes of motion: (1) adduction, in which the locking of the subtalar joint allows the foot to turn inward toward the line of progression; (2) plantarflex, in which the forefoot is flexed downward relative to the heel; and (3) inversion, in which the sole of the foot is turned inward relative to the heel. With the combination of these three motions, the foot continues rolling forward onto the toes.
- adduction in which the locking of the subtalar joint allows the foot to turn inward toward the line of progression
- plantarflex in which the forefoot is flexed downward relative to the heel
- inversion in which the sole of the foot is turned inward relative to the heel.
- U.S. Patent No. 5,625,964 issued to Lyden et al., discloses an athletic shoe having a sole with a rearfoot strike zone segmented from the remaining heel area by a line of flexion which permits articulation of the strike zone during initial heel strike of a runner.
- the line of flexion is located to delimit a rearfoot strike zone reflecting the heel to toe running style of the majority of the running population.
- the sole incorporates cushioning elements, including a resilient gas filled bladder, to provide differential cushioning characteristics in different parts of the heel, to attenuate force applications and shock associated with heel strike, without degrading footwear stability during subsequent phases of the running cycle.
- the line of flexion may be formed by various ways including a deep groove, a line of relatively flexible midsole material, and a relatively flexible portion of a segmented fluid bladder.
- the athletic shoes presently available on the market are typically of a multiple layer construction comprised of an outsole, a midsole and an insole.
- the outsole is normally formed of an abrasion-resistant material such as rubber and is the portion of the sole that contacts the ground.
- the midsole is the portion between the outsole and the insole and is typically comprised of a compressible material such as ethylene vinyl acetate (EVA) foam for cushioning.
- EVA ethylene vinyl acetate
- the insole is the portion in contact with the wearer's foot and is normally comprised of a soft pad to enhance shoe comfort. Durability of the midsole is also an important goal for sole design. Foam materials such as the EVA foam commonly used in the midsole have limited useful lives and tend to break down over time.
- Compressible bridging elements may be provided between the pairs of ribs to avoid the noises resulted from the constant contact and releasing of the ribs of adjacent pairs.
- U.S. Patent Nos. 5,461,800 and 5,822,886, both issued to Simon Luthi et al., describe integrally molded midsoles having tubular suspension members.
- the tubular suspension members behave as springs and have spring constants which may be designed for a particular application by choice of the tube length, the tube wall thickness or the hardness of the tube material.
- the midsole is made of an elastomer such as HYTREL® that is cast in a preformed shape and thereafter subjected to substantial compressive forces so that the tubular springs take a compression set and thereafter perform as near- ideal springs.
- U.S. Patent No. 5,337,492 issued to Wolf Anderie et al., describes a shoe bottom having a plurality of individual flexurally resilient carrier elements which are directed transversely with respect to the longitudinal direction of the shoe and which are arranged at spacings one behind the other in the longitudinal direction of the shoe.
- the carrier elements are connected to a cover plate portion on the foot side and to an outsole layer on the outward side.
- Each carrier element is formed by a closed box profile with an upper web portion which extends transversely with respect to the longitudinal direction of the shoe, a lower web portion which is parallel to the upper web portion, two lateral support walls which connect the ends of the web portions together and bracing means supporting the upper web portion relative to the lower web portion.
- U.S. Patent No. 6,769,202 issued to Simon Luthi et al., describes a sole unit for a shoe including a directional element, a cushioning element and, optionally a heel cradle.
- the directional element has a top plate, a bottom plate and multiple generally parallel strut elements oriented transversely to the longitudinal axis of the directional element and connected to the top plate and the bottom plate.
- the cushioning element is adapted to be received in the directional element, more specifically between the strut members of the directional element.
- the prior art soles described above do not provide the shoes with optimal shock absorption and stability due to their design.
- the present invention seeks to provide a midsole for a shoe which provides superior shock absorption and stability properties and which can be customized for different applications and individuals.
- an object of the present invention to provide an athletic shoe that optimizes the conflicting concerns of shock absorption and stability, while also maximizing comfort and durability. It is a more specific object of the present invention to construct an athletic shoe having a sole unit which provides differential cushioning properties at different regions of the sole, so as to attenuate impact forces at heel strike without introducing instability to the subsequent motion in the running gait cycle. It is another object of the present invention to provide an athletic shoe sole that adopts a mechanical cushioning system, which is designed to absorb impact forces with a specific configuration of an elastic and durable material, eliminating the need for relying heavily on the less durable foam material for impact absorption. It is a further object of the present invention to provide an athletic shoe sole having a mechanical cushioning system which can be easily customized for the specific application and individual wearing the shoe by slightly modifying its configuration.
- Such midsole comprises a midsole element comprising: (a) a medial element comprising a top medial plate, a bottom medial plate, and a plurality of medial strut members disposed between the top and bottom medial plates for supporting the top medial plate a distance away from the bottom medial plate; and (b) a lateral element comprising a top lateral plate, a bottom lateral plate, and a plurality of lateral strut members disposed between the top and bottom lateral plates for supporting the top lateral plate a distance away from the bottom lateral plate; wherein at least a portion of the plurality of lateral strut members are arranged at an angle to at least a portion of the plurality of medial strut members.
- the angle between the lateral strut members and the medial strut members is greater than 0 degrees to less than 180 degrees, preferably about 5 to 120 degrees, more preferably about 10 to about 90 degrees, and
- the medial and lateral strut members in the midsole element described above have a C shaped cross-section when intersected by an imaginary plane that intersects the respective top and bottom medial and lateral plates at approximate right angles.
- a midsole for an article of footwear comprising a midsole element, which comprises a top plate; a bottom plate; and a plurality of strut members disposed between the top and bottom plates for supporting the top plate a distance away from the bottom plate; at least two of the strut members being adjacent to each other and having a C shaped cross-section facing in the same direction when intersected by an imaginary plane that intersects the top and bottom plates at approximate right angles.
- the midsole element described above further comprises a heel cleft which is medial to the point of heel strike at the midsole element.
- the heel cleft provides flexibility to the midsole and allows the midsole to bend at impact thereby decreasing the amount and velocity of pronation.
- the heel cleft is about 0 to about 180 degrees, preferably about 0 to about 120 degrees, more preferably about 0 to about 90 degrees, offset from the transverse axis of the midsole.
- the heel cleft is preferably about 15 to about 75 degrees, and more preferably about 17 and about 65 degrees, offset from the transverse axis of the midsole.
- the heel cleft may be about 65 to about 90 degrees, preferably about 75 to about 90 degrees, offset from the transverse axis of the midsole.
- an article of footwear which comprises an upper, a midsole of the present invention as described above, and an outsole.
- FIG. 1 is a perspective view of a midsole element according to the present invention
- FIG. 2 is a top plan view of the midsole element
- FIG. 3 illustrates an alternative embodiment of the present invention
- FIG. 4 is a rear view of the mids*ole element shown in FIG. 1;
- FIG. 5 is a medial side view of the midsole element shown in FIG. 1;
- FIG. 6 is a lateral side view of the midsole element shown in FIG. 1 in an up-side- down position;
- FIG. 7 is a side view of a section of the midsole element including a combination of a top plate, a bottom plate and a strut member;
- FIGS. 8-13 are various alternative embodiments of the present invention.
- FIGS. 14A-D illustrate the effect of speed on the functional design of a heel cleft;
- FIG. 15 is an exploded view of a sole in accordance with the present invention;
- FIG. 16 is perspective view of a cushioning element;
- FIG. 17 is bottom plan view of a sole for a right shoe in accordance with the present invention.
- FIG. 18 is a lateral side view of the sole;
- FIG. 19 is a medial side view of the sole;
- FIG. 20 is a perspective view of a shoe incorporating a midsole element in accordance with the present invention.
- FIGS. 21-24 illustrate various alternative soles in accordance with the present invention
- FIGS. 25-28 are side views of shoes incorporating the various alternative soles illustrated in FIGS. 21-24;
- FIG. 29 illustrates 5 zones of a shoe in accordance with the present invention
- FIG. 30 illustrates 3 zones of an alternative embodiment in accordance with the present invention.
- FIGS. 1 and 2 illustrate an exemplary embodiment of a midsole element in accordance with one aspect of the present invention.
- the midsole element 1 comprises: a medial element 2 and a lateral element 3.
- the medial element comprises a top medial plate 4, a bottom medial plate 5, and a plurality of medial strut members 6 disposed between the top and bottom medial plates 4, 5 for supporting the top medial plate 4 a distance away from the bottom medial plate 5.
- the lateral element 3 comprises a top lateral plate 7, a bottom lateral plate 8, and a plurality of lateral strut members 9 disposed between the top and bottom lateral plates 7, 8 for supporting the top lateral plate 7 a distance away from the bottom lateral plate 8; wherein at least a portion of the plurality of lateral strut members 9 are arranged at an angle ( ⁇ ⁇ ) to at least a portion of the plurality of medial strut members 6.
- the angle ⁇ 1 is greater than 0 degrees to less than 180 degrees, preferably about 5 to about 120 degrees, more preferably about 10 to 90 degrees, and most preferably 15 to about 75 degrees.
- the directional design provides flexibility and stiffness anisotropically to the sole in the longitudinal and lateral directions of the shoe respectively.
- the lateral strut members 9 are oriented at an angle (0 2 ) offset from the longitudinal axis L of the midsole element or the shoe receiving the midsole element.
- the lateral strut members may be oriented at an angle ⁇ 2 of greater than 0 degrees to less than 180 degrees, preferably greater than 0 degrees to about 90 degrees, more preferably about 10 to about 90 degrees, even more preferably about 15 to about 75 degrees, most preferably about 17 to about 65 degrees, offset from the longitudinal axis.
- the medial strut members 6 are also oriented at an angle (# 3 ) offset from the longitudinal axis L.
- the medial strut members may be oriented at an angle 0 3 of greater than 0 degrees to less than 180 degrees, preferably greater than 0 degrees to about 90 degrees, more preferably about 10 to about 90 degrees, for example, about 15 to about 75 degrees, offset from the longitudinal axis.
- the medial strut members 6 may be substantially perpendicular to the longitudinal axis L of the midsole to maximize lateral stability for shoes intended for linear movement activities such as walking and running as shown in FIG. 2.
- the medial strut members 26 may be arranged less than 90 degrees offset from the longitudinal axis L of the midsole as shown in FIG.
- the midsole element 1 has a cavity 10 between the medial element 2 and the lateral element 3.
- the cavity 10 has a lateral edge 11 and a medial edge 12.
- the lateral strut members 9 are perpendicular to the lateral edge 11 of the cavity and a portion of the medial strut members 6 are perpendicular to the medial edge 12 of the cavity.
- the cavity decouples the medial element 2 and the lateral element 3 and makes the midsole element 1 flexible.
- a flexible midsole allows the shoe to bend at impact thus decreasing the moment arm (lever) of the impact force applied to the shoe.
- the medial and lateral elements 2, 3 may be connected.
- the medial and lateral elements 2, 3 may be connected at their rear ends as shown in FIG. 4 by integral molding.
- the medial and lateral elements may be further connected by at least one bridging member 13 between the top medial plate 4 and the top lateral plate 7. It is also contemplated that the one or more bridging members 13 may exist between the bottom medial plate 5 and the bottom lateral plate 8.
- FIG. 5 is a medial side view of the midsole element 1.
- the medial strut members 6 disposed between the top medial plate 4 and the bottom medial plate 5 have a C shaped cross-section when intersected by an imaginary plane that intersects the top and bottom medial plates 4, 5 at approximate right angles.
- all of the adjacent C shaped strut members face in the same direction.
- the strut members are spaced apart leaving open spacings between two adjacent strut members.
- Other embodiments having at least two adjacent C shaped strut members that face in the same direction are also contemplated as falling within the scope of the present invention.
- the C shaped strut members in the heel region may face in the same direction whereas the C shaped strut members in the forefoot region may face in the opposite direction.
- the C-shaped strut members are superior in cushioning properties than struts of other shapes such as S-shaped struts, wavy struts, straight struts and slanted struts.
- C-shaped and S-shaped structures have different force versus deflection curve characteristics because an S-shaped structure has an inflection point in the center thereof whereas a C-shaped structure does not have an inflection point. This results in properties of an S-shaped structure, such as dynamic range and predictability, which are markedly different from that of a C-shaped strut member.
- a C-shaped structure has a greater dynamic range than an S-shaped structure because the force-deflection curve for the C-shaped structure is more linear than the S- shaped structure.
- the force deflection curve for an S shaped strut illustrates compliance during the initial phases of deflection and stiffness in the later phases.
- an S- shaped structure is less predictable in performance than a C-shaped structure because the S- shaped structure has three regions of flexure whereas the C-shaped structure only has one region of flexure.
- uniformity of material is more important in an S-shaped strut member than in a C-shaped strut member.
- Wavy struts have even more regions of flexure than the S-shaped structure and therefore, have at least all of the disadvantages of the S- shaped structure discussed above.
- Straight and slanted struts do not offer controlled deformation and therefore, their response to impact force is hardly predictable. For example, depending on where the force is applied, the strut may bend in the top, middle or bottom of the strut.
- the lateral strut members 9 disposed between the top lateral plate 7 and the bottom lateral plate 8 are also C-shaped when the midsole element is in an up-side- down position.
- the C-shaped strut members may have many variations.
- FIGS. 7-13 illustrate several examples.
- the thickness of the strut members is about 0.5 mm to about 15 mm, preferably about 1 mm to about 6 mm, and more preferably about 2 mm to about 5 mm.
- the wall thickness of the strut members may be uniform or may be different for the medial and lateral elements to control pronation on the medial side and cushioning on the lateral side.
- the wall thickness may differ transversely or vertically to adjust cushioning depending on the application and individual the shoe is designed for.
- the wall thickness may taper from the lateral edge to the medial edge of a strut member.
- the configuration of the strut members may be modified by persons skilled in the art to optimize the performance of the midsole element and to customize for the specific application and individual wearing the shoe.
- the material for the medial and lateral elements may be a plastic material, such as an engineered resin, or any durable elastomeric material.
- the top plates, strut members and bottom plates of the medial and lateral elements may be independently selected from the following exemplary materials bearing in mind that other suitable materials are also contemplated: thermoplastic polyurethane (TPU), polyester-TPU, polyether-TPU, polyester- polyether TPU, polyvinylchloride, polyester, thermoplastic ethyl vinyl acetate, styrene butadiene styrene, polyether block amide available under the trademark Pebax®, engineered polyester available under the trademark Hytrel®, TPU blends including natural and synthetic rubbers, and blends or combinations thereof.
- TPU thermoplastic polyurethane
- polyester-TPU polyether-TPU
- polyester- polyether TPU polyvinylchloride
- polyester thermoplastic ethyl vinyl acetate
- TPU is the preferred material for the medial and lateral elements.
- the top plates, strut members and bottom plates of the medial and lateral elements are integrally molded from TPU.
- the hardness of the plastic material suitable for the midsole element is about 60 Shore A to about 70 Shore D, preferably about 75 Shore A to about 45 Shore D.
- the performance properties of the midsole can be adjusted by changing the hardness of the midsole element. For example, it is contemplated using a more compliant material for the lateral side of the element and another stiffer material for the medial side.
- a midsole in accordance with the present invention may further comprise an arch support at the arch region of the midsole.
- the arch support may be integrally molded with the medial element and/or the lateral element, for example at the top plates and/or bottom plates, or the arch support may be a separate element from the medial and lateral elements.
- the arch support 14 is integrally molded with the medial element 2 and the lateral element 3.
- the arch support is made of a flexible material for example a plastic material.
- the arch support may be selected from the following exemplary materials bearing in mind that other suitable materials are also contemplated: thermoplastic polyurethane (TPU), polyester-TPU, polyether-TPU, polyester-polyether TPU, polyvinylchloride, polyester, thermoplastic ethyl vinyl acetate, styrene butadiene styrene, polyether block amide available under the trademark Pebax®, engineered polyester available under the trademark Hytrel®, TPU blends including natural and synthetic rubbers, and blends or combinations thereof.
- TPU is the preferred material for the medial and lateral elements.
- a midsole in accordance with another aspect of the present invention comprises a midsole element comprising a top plate; a bottom plate; and a plurality of strut members disposed between the top and bottom plates for supporting the top plate a distance away from the bottom plate; at least two, preferably most, and most preferably all, of the strut members being adjacent to each other and having a C shaped cross-section facing in the same direction when intersected by an imaginary plane that intersects the top and bottom plates at approximate right angles.
- the midsole element may comprise multiple elements, for example, a medial element and a lateral element. Alternatively, the midsole element may be a single element.
- the midsole element may comprise a medial element only without the lateral element, or comprises a lateral element only without the medial element.
- the midsole element may be received in any portion of the shoe to provide desired cushioning and support for a selected region or all regions of the foot.
- the midsole element may be located in the forefoot region, the heel region or the entire sole region.
- the midsole element may further comprise a heel cleft.
- the heel cleft in walking and running, is generally positioned so that it is medial to the point of impact. The purpose of the heel cleft is to make the heel of the shoe flexible. A flexible heel allows the heel of the shoe to bend at impact thus decreasing the moment arm (lever) in which the center of force is applied.
- the point of impact may vary for a population of athletes and therefore it stretches along the lateral side of the heel. For example, Athlete A may impact the far edge of the lateral heel closest to the end of the heel and Athlete B may impact on the lateral edge of the heel closest to the midfoot. It is desirable to ensure that the heel cleft is positioned medial to each impact point for the entire population of athletes. This ensures that the heel cleft flexes on impact for the entire population of athletes.
- FIGS. 14A-D illustrate the effect of speed on the functional design of the heel cleft in the shoe sole.
- the heel cleft is oriented at an angle (0 4 ) offset from a transverse axis T of the sole or shoe.
- the heel cleft 15 is preferably disposed at an angle 0 4 of about 17 degrees offset from the transverse axis T for the shoe that is typically used for slow walking as shown in FIG. 14 A, about 47 degrees for medium walking as shown in FIG. 14B, about 62 degrees for fast walking as shown in FIG. 14C, and about 65 degrees for running as shown in FIG. 14D.
- a trail shoe may have a heel cleft oriented horizontally across the heel, i.e.
- the heel cleft may be oriented about 0 to about 180 degrees, preferably about 0 to about 120 degrees, more preferably about 0 to about 90 degrees, most preferably about 10 to about 80 degrees, offset from the transverse axis of the midsole.
- the heel cleft is preferably about 15 to about 75 degrees, and more preferably about 17 and about 65 degrees, offset from the transverse axis of the midsole.
- the heel cleft may be about 65 to about 90 degrees, preferably about 75 to about 90 degrees, offset from the transverse axis of the midsole.
- the strut members that are disposed laterally to the heel cleft are substantially perpendicular to the heel cleft to maximize shock absorption.
- the lateral strut members of the lateral element may be oriented substantially perpendicular to the heel cleft.
- the lateral edge 11 of the cavity 10 generally corresponds to a heel cleft.
- the heel cleft may be in the form of a slit, a groove, a cavity of an elongated shape or any other shape, a line of weakened construction, or a line of flexible juncture formed by a material of greater elasticity and flexibility.
- U.S. Patent No. 5,625,964 which is incorporated herein by reference in its entirety, describes a line of flexion, which is an example of a heel cleft in accordance with the present invention.
- a midsole may further comprise a flexible member 16 adapted to be received in the forefoot region of the shoe.
- the flexible member 16 is in contact with the midsole element 1 and is made of a flexible material such as a foam material, plastic material and engineered resin.
- the flexible member is composed of styrene butadiene styrene, which provides enhanced cushioning benefits and improved resistance to compression.
- the midsole elements are shown to be adapted to be received in the heel region of the shoe, it is contemplated that the midsole element of the present invention may be received in any portion of the shoe to provide desired cushioning and support for a selected region, for example the forefoot region, or all regions of the foot.
- the midsole in accordance with the present invention may further comprise a cushioning element 17 in contact with the top medial plate 4, the top lateral plate 7, and the flexible member 16.
- the cushioning element 17 may have extruded portions 19 adapted to be received in the flexible member 16.
- the cushioning element may have additional extruded portions adapted to be received in the cavity 10 between the bridging members 13 of the midsole element 1.
- the cushioning element 17 may serve as an insole for the shoe.
- the shoe may additionally have an insole.
- the material for the cushioning element is preferably a foam material or any suitable elastic cushioning material.
- EVA ethyl vinyl acetate
- thermo-set polyether thermo-set polyether
- poly-ester urethane ethyl vinyl acetate co-polymer blends including isoprene rubber, poly-olefins, natural and synthetic rubbers, styrene butadiene styrene, and blends or combinations thereof.
- the EVA co-polymer is the preferred material for the cushioning element.
- FIGS. 17-19 shows an assembled sole including a midsole element 1, a flexible member 16, a cushioning element 17, and an outsole 20.
- the flexible member 16 is in contact with the arch support 14 at the arch region.
- the cushioning element 17 is on top of the flexible member 16 and the midsole element 1.
- FIG. 20 shows a shoe incorporating a sole in accordance with the present invention.
- the shoe 21 has an upper 22, a midsole and an outsole 20.
- the midsole includes a midsole element 1, a flexible member 16 and a cushioning element 17.
- the C-shaped struts are preferably exposed peripherally for visual effect.
- the size and shape of the cavity 10 of the midsole element 1 may vary to balance the shock absorption and stability performance while minimizing the weight of the shoe.
- FIGS. 21-24 illustrates several embodiments of soles in accordance with the present invention.
- the embodiment shown in FIG. 21 includes a midsole element 101, a cushioning element 117 and an outsole 120. This embodiment does not have an arch support or a flexible member.
- the embodiment shown in FIG. 22 includes a midsole element 102, which has more C-shaped strut members than the midsole element 101 shown in FIG. 21, a cushioning element 117 and an outsole 120. This embodiment does not have an arch support either.
- the embodiment shown in FIG. 23 includes a midsole element 101, an arch support 114, a cushioning element 117, a flexible member 116, and an outsole 120.
- the embodiment shown in FIG. 24 includes a midsole element 102, a cushioning element 117, a flexible member 116, and an outsole 120. This embodiment does not have an arch support. Further embodiments with various combinations of elements are also contemplated as falling within the scope of the present invention.
- FIGS. 25-28 illustrate the shoes incorporating the soles shown in FIGS. 21-24 respectively.
- the shoes each further comprise an upper 122.
- Shoes at various price points can be developed by varying the number of strut members in the midsole element in combination with including or eliminating the arch support or the flexible member.
- FIG. 29 illustrates 5 zones in a sole in accordance with the present invention throughout a running gait.
- Line 23 illustrates an approximate strike path of the running gait. It shows the progression of forces in a normal gait line as the foot goes from impact to propulsion.
- the normal gait line is the average vector of all forces that act on the bottom of a normal foot as it goes through the stance phase of a gait cycle.
- the shoe sole in accordance with the present invention has been tuned in 5 zones throughout the running gait.
- Zone 1 is optimized for heel strike.
- Zone 2 is optimized for midfoot strike and first-flex.
- Zone 3 is optimized for forefoot strike.
- Zone 4 is optimized for posting.
- Zone 5 incorporating an integrated arch support is optimized for stability.
- the strut members 106 at multiple zones provide mechanical cushioning properties anisotropically.
- FIG. 30 illustrates 3 zones in a sole for a basketball shoe in accordance with the present invention throughout a running gait.
- Lines 24 illustrate medial and lateral movements.
- the shoe sole has been tuned in 3 zones throughout the running gait.
- Zone 1 is optimized for heel strike.
- Zone 2 is optimized for midfoot strike and first-flex.
- Zone 3 is optimized for forefoot strike.
Abstract
Description
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Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2005800490353A CN101141894B (en) | 2005-03-10 | 2005-03-10 | Mechanical shockproof system of shoes |
JP2008500688A JP2008532618A (en) | 2005-03-10 | 2005-03-10 | Mechanical cushioning system for footwear |
BRPI0520110-1A BRPI0520110A2 (en) | 2005-03-10 | 2005-03-10 | midsole and footwear |
PCT/US2005/007877 WO2006098715A1 (en) | 2005-03-10 | 2005-03-10 | Mechanical cushioning system for footwear |
EP05725196.9A EP1871188B1 (en) | 2005-03-10 | 2005-03-10 | Mechanical cushioning system for footwear |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/US2005/007877 WO2006098715A1 (en) | 2005-03-10 | 2005-03-10 | Mechanical cushioning system for footwear |
Publications (1)
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WO2006098715A1 true WO2006098715A1 (en) | 2006-09-21 |
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ID=36991994
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/US2005/007877 WO2006098715A1 (en) | 2005-03-10 | 2005-03-10 | Mechanical cushioning system for footwear |
Country Status (5)
Country | Link |
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EP (1) | EP1871188B1 (en) |
JP (1) | JP2008532618A (en) |
CN (1) | CN101141894B (en) |
BR (1) | BRPI0520110A2 (en) |
WO (1) | WO2006098715A1 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
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US7997011B2 (en) | 2006-10-03 | 2011-08-16 | Nike, Inc. | Footwear with support assembly having spring arms |
ITPD20130358A1 (en) * | 2013-12-23 | 2015-06-24 | Diadora Sport S R L | SOLE STRUCTURE, PARTICULARLY FOR SPORTS SHOES |
US9504292B2 (en) | 2013-04-02 | 2016-11-29 | Nike, Inc. | Method of bonding PEBA plastic composition |
USD789060S1 (en) | 2016-03-04 | 2017-06-13 | Under Armour, Inc. | Shoe component |
US10010134B2 (en) | 2015-05-08 | 2018-07-03 | Under Armour, Inc. | Footwear with lattice midsole and compression insert |
US10010133B2 (en) | 2015-05-08 | 2018-07-03 | Under Armour, Inc. | Midsole lattice with hollow tubes for footwear |
US10039343B2 (en) | 2015-05-08 | 2018-08-07 | Under Armour, Inc. | Footwear including sole assembly |
US10226098B2 (en) | 2013-03-14 | 2019-03-12 | Under Armour, Inc. | Method of making a zonal compression shoe |
US10779614B2 (en) | 2017-06-21 | 2020-09-22 | Under Armour, Inc. | Cushioning for a sole structure of performance footwear |
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US7748141B2 (en) * | 2006-05-18 | 2010-07-06 | Nike, Inc | Article of footwear with support assemblies having elastomeric support columns |
US9930928B2 (en) | 2013-02-13 | 2018-04-03 | Adidas Ag | Sole for a shoe |
DE102013202306B4 (en) | 2013-02-13 | 2014-12-18 | Adidas Ag | Sole for a shoe |
DE102014215897B4 (en) | 2014-08-11 | 2016-12-22 | Adidas Ag | adistar boost |
JP6679363B2 (en) | 2015-03-23 | 2020-04-15 | アディダス アーゲー | Soles and shoes |
JP2020044267A (en) * | 2018-09-21 | 2020-03-26 | 美津濃株式会社 | Sole structure |
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US20200315291A1 (en) * | 2019-04-05 | 2020-10-08 | Scott Tucker | Compressible structure secured to an upper of an article of footwear |
FR3122183A1 (en) | 2021-04-22 | 2022-10-28 | Arkema France | Composition of polyamide block copolymer and polyether block copolymer and thermoplastic polyurethane |
FR3122182B1 (en) | 2021-04-22 | 2023-03-24 | Arkema France | Composition of thermoplastic polyurethane and of copolymer with polyamide blocks and with polyether blocks comprising amine chain ends |
FR3122181A1 (en) | 2021-04-22 | 2022-10-28 | Arkema France | Composition of thermoplastic polyurethane and polyamide |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5337492A (en) * | 1990-11-07 | 1994-08-16 | Adidas Ag | Shoe bottom, in particular for sports shoes |
US5461800A (en) * | 1994-07-25 | 1995-10-31 | Adidas Ag | Midsole for shoe |
US5625964A (en) | 1993-03-29 | 1997-05-06 | Nike, Inc. | Athletic shoe with rearfoot strike zone |
US6115943A (en) * | 1995-10-02 | 2000-09-12 | Gyr; Kaj | Footwear having an articulating heel portion |
US20020050077A1 (en) * | 1999-06-18 | 2002-05-02 | Jack Wang | Footwear with visible, replaceable cushioning cassette |
US6769202B1 (en) | 2001-03-26 | 2004-08-03 | Kaj Gyr | Shoe and sole unit therefor |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3012342A (en) * | 1960-07-06 | 1961-12-12 | Ramirez Eliseo Loza | Sole assembly for footwear |
DE8710115U1 (en) * | 1987-07-23 | 1987-11-12 | Jacoform International Handelsgesellschaft Mbh, 2107 Rosengarten, De | |
US5005299A (en) * | 1990-02-12 | 1991-04-09 | Whatley Ian H | Shock absorbing outsole for footwear |
KR100317184B1 (en) * | 1999-09-06 | 2002-01-18 | 장성욱 | Shoes bottom |
US6763611B1 (en) * | 2002-07-15 | 2004-07-20 | Nike, Inc. | Footwear sole incorporating a lattice structure |
DE202004012472U1 (en) * | 2004-08-10 | 2004-10-21 | I Shing Trade Co., Ltd. | Shock absorbing sole core for walking shoe or boot has sole-shaped upper panel separated from lower sole-shaped panel by flexible cross-members |
-
2005
- 2005-03-10 BR BRPI0520110-1A patent/BRPI0520110A2/en not_active IP Right Cessation
- 2005-03-10 JP JP2008500688A patent/JP2008532618A/en active Pending
- 2005-03-10 WO PCT/US2005/007877 patent/WO2006098715A1/en active Application Filing
- 2005-03-10 CN CN2005800490353A patent/CN101141894B/en active Active
- 2005-03-10 EP EP05725196.9A patent/EP1871188B1/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5337492A (en) * | 1990-11-07 | 1994-08-16 | Adidas Ag | Shoe bottom, in particular for sports shoes |
US5625964A (en) | 1993-03-29 | 1997-05-06 | Nike, Inc. | Athletic shoe with rearfoot strike zone |
US5461800A (en) * | 1994-07-25 | 1995-10-31 | Adidas Ag | Midsole for shoe |
US6115943A (en) * | 1995-10-02 | 2000-09-12 | Gyr; Kaj | Footwear having an articulating heel portion |
US20020050077A1 (en) * | 1999-06-18 | 2002-05-02 | Jack Wang | Footwear with visible, replaceable cushioning cassette |
US6769202B1 (en) | 2001-03-26 | 2004-08-03 | Kaj Gyr | Shoe and sole unit therefor |
Non-Patent Citations (1)
Title |
---|
See also references of EP1871188A4 * |
Cited By (23)
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US7997011B2 (en) | 2006-10-03 | 2011-08-16 | Nike, Inc. | Footwear with support assembly having spring arms |
US10470520B2 (en) | 2013-03-14 | 2019-11-12 | Under Armour, Inc. | Shoe with lattice structure |
US11547177B2 (en) | 2013-03-14 | 2023-01-10 | Under Armour, Inc. | Shoe with lattice structure |
US11425963B2 (en) | 2013-03-14 | 2022-08-30 | Under Armour, Inc. | Shoe with lattice structure |
US10743610B2 (en) | 2013-03-14 | 2020-08-18 | Under Armour, Inc. | Shoe with lattice structure |
US10575586B2 (en) | 2013-03-14 | 2020-03-03 | Under Armour, Inc. | Shoe with lattice structure |
US10470519B2 (en) | 2013-03-14 | 2019-11-12 | Under Armour, Inc. | Shoe with lattice structure |
US10226098B2 (en) | 2013-03-14 | 2019-03-12 | Under Armour, Inc. | Method of making a zonal compression shoe |
US9504292B2 (en) | 2013-04-02 | 2016-11-29 | Nike, Inc. | Method of bonding PEBA plastic composition |
ITPD20130358A1 (en) * | 2013-12-23 | 2015-06-24 | Diadora Sport S R L | SOLE STRUCTURE, PARTICULARLY FOR SPORTS SHOES |
WO2015097015A1 (en) * | 2013-12-23 | 2015-07-02 | Diadora Sport S.R.L. | Sole, particularly for sports shoes |
US10231511B2 (en) | 2015-05-08 | 2019-03-19 | Under Armour, Inc. | Interwoven lattice structure for cushioning member |
US10104934B2 (en) | 2015-05-08 | 2018-10-23 | Under Armour, Inc. | Footwear including sole assembly |
US10039343B2 (en) | 2015-05-08 | 2018-08-07 | Under Armour, Inc. | Footwear including sole assembly |
US10575587B2 (en) | 2015-05-08 | 2020-03-03 | Under Armour, Inc. | Footwear including sole assembly |
US10702012B2 (en) | 2015-05-08 | 2020-07-07 | Under Armour, Inc. | Footwear midsole with lattice structure formed between platforms |
US10010133B2 (en) | 2015-05-08 | 2018-07-03 | Under Armour, Inc. | Midsole lattice with hollow tubes for footwear |
US10750820B2 (en) | 2015-05-08 | 2020-08-25 | Under Armour, Inc. | Midsole lattice with hollow tubes for footwear |
US11369164B2 (en) | 2015-05-08 | 2022-06-28 | Under Armour, Inc. | Footwear including sole assembly |
US10010134B2 (en) | 2015-05-08 | 2018-07-03 | Under Armour, Inc. | Footwear with lattice midsole and compression insert |
US11457693B2 (en) | 2015-05-08 | 2022-10-04 | Under Armour, Inc. | Footwear midsole with lattice structure formed between platforms |
USD789060S1 (en) | 2016-03-04 | 2017-06-13 | Under Armour, Inc. | Shoe component |
US10779614B2 (en) | 2017-06-21 | 2020-09-22 | Under Armour, Inc. | Cushioning for a sole structure of performance footwear |
Also Published As
Publication number | Publication date |
---|---|
CN101141894B (en) | 2010-09-01 |
EP1871188B1 (en) | 2016-05-18 |
BRPI0520110A2 (en) | 2009-04-22 |
JP2008532618A (en) | 2008-08-21 |
CN101141894A (en) | 2008-03-12 |
EP1871188A4 (en) | 2012-08-15 |
EP1871188A1 (en) | 2008-01-02 |
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