Golf shoe with an outsole having wave-like flex channels

Abstract

A golf shoe has an upper, a midsole, and an outsole. The outsole includes a plurality of wave-like flex channels, surrounded by a hard base material. The hard base material provides stiffness for support and stability while the flex channels allow the outsole to bend when a user walks or swings a golf club. The outsole also has a plurality of receptacles for attaching and removing cleats, providing traction between the golf shoe and a ground surface.

Claims

1. A golf shoe comprising: an upper; a midsole; and an outsole having: a plurality of flex channels, each flex channel extending in a transverse direction from a lateral edge to a medial edge or an interior region of the outsole, wherein each flex channel has at least one curved channel portion, the curved portions being substantially parallel, and at least one of the flex channels has i) a straight first channel portion; ii) a straight third channel portion; and iii) a curved second channel portion of the at least one curved channel portion extending between the first channel portion and the third channel portion; a hard base material surrounding the flex channels; and a plurality of receptacles for attaching and removing a plurality of cleats, wherein the hard base material provides stiffness for support and stability and the flex channels allow the outsole to bend when a golfer walks or swings, wherein the flex channels pass through the receptacles.

2. The golf shoe of claim 1, wherein: the straight first channel portion has a first length (L1); the curved second channel portion has a second length (L2); the straight third channel portion has a third length (L3); and L2 is greater than or equal to L1.

3. The golf shoe of claim 2, wherein: the straight first channel portion has a first length (L1); the curved second channel portion has a second length (L2); the straight third channel portion has a third length (L3); and L2 is greater than or equal to L3.

4. The golf shoe of claim 1, wherein: the straight first channel portion has a first length (L1); the curved second channel portion has a second length (L2); the straight third channel portion has a third length (L3); and L2 is greater than or equal to L1 and L3.

5. The golf shoe of claim 1, wherein a first flex channel is located adjacent to second and third flex channels, the first flex channel having a first width (W1) and the second and third channels having second and third widths (W2) and (W3), and W2 is substantially equal to W3 and W1 is greater than W2 and W3.

6. The golf shoe of claim 1, wherein at least one of the flex channels has a straight first portion and a curved second portion, the curved portion having a first arcuate section that arcs in a first direction, and a second arcuate section that arcs in an opposing direction.

7. The golf shoe of claim 1, wherein at least two of the flex channels pass across one of the receptacles.

8. A golf shoe comprising: an upper; a midsole; and an outsole having: a metatarsal portion proximate to the wearer's metatarsal bones; a calcaneus portion proximate to the wearer's calcaneus; and an arch portion extending between the metatarsal portion and the calcaneus portion; a plurality of flex channels, at least some of the flex channels arranged in a pattern of substantially parallel waves, each flex channel extending in a transverse direction from an exterior edge of the outsole to an interior region of the outsole, wherein each flex channel has a at least one curved channel portion, and at least one of the flex channels has i) a straight first channel portion; ii) a straight third channel portion; and iii) a curved second channel portion extending between the first channel portion and the third channel portion; a hard base material surrounding the flex channels; and a plurality of receptacles for attaching and removing a plurality of cleats, wherein the hard base material provides stiffness for support and stability and the flex channels allow the outsole to bend when a golfer walks or swings, wherein at least some of the flex channels pass through the receptacles.

9. The golf shoe of claim 8, wherein: the straight first channel portion has a first length (L1); the curved second channel portion has a second length (L2); the straight third channel portion has a third length (L3); and L2 is greater than or equal to L3.

10. The golf shoe of claim 8, wherein: the straight first channel portion has a first length (L1); the curved second channel portion has a second length (L2); the straight third channel portion has a third length (L3); and L2 is greater than or equal to L1 and L3.

11. The golf shoe of claim 8, wherein at least one of the flex channels has a straight first portion and a curved second portion, the curved portion having a first arcuate section that arcs in a first direction, and a second arcuate section that arcs in an opposing direction, wherein each arc has a radius of less than five inches.

12. The golf shoe of claim 8, wherein the metatarsal portion and calcaneus portion contain the flex channels in the same pattern.

13. The golf shoe of claim 8, wherein the metatarsal portion contains the flex channels and the calcaneus portion contains a second plurality of flex channels, the second plurality of flex channels arranged in a pattern of substantially parallel waves along an axis that is at an angle with respect to the pattern of the flex channels in the metatarsal portion.

14. The golf shoe of claim 13, wherein there are eight flex channels across the metatarsal portion and four flex channels across the calcaneus portion.

15. The golf shoe of claim 13 wherein: at least one of the flex channels in the metatarsal portion terminates at one of the plurality of receptacles; a plurality of flex channels in the metatarsal portion pass across one of the plurality of receptacles; at least one of the flex channels in the calcaneus portion terminates at one of the plurality of receptacles; and a plurality of flex channels in the calcaneus portion pass across one of the plurality of receptacles.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The accompanying drawings form a part of the specification and are to be read in conjunction therewith. In the various views, like reference numerals are used to indicate like parts.

(2) FIG. 1A is a bottom perspective view of a golf shoe in accordance with the subject technology.

(3) FIG. 1B is a bottom view of an outsole of a golf shoe in accordance with the subject technology.

(4) FIG. 1C is a side view of the medial side of a golf shoe in accordance with the subject technology.

(5) FIG. 1D is a top view of a golf shoe in accordance with the subject technology.

(6) FIG. 1E is a side view of the lateral side of a golf shoe in accordance with the subject technology.

(7) FIG. 1F is a front view of a golf shoe in accordance with the subject technology.

(8) FIG. 1G is a back view of a golf shoe in accordance with the subject technology.

(9) FIG. 2 is a top view of a midsole of a golf shoe in accordance with the subject technology.

(10) FIG. 3 is a bottom view of an outsole of a golf shoe in accordance with the subject technology.

(11) FIG. 4 is a side view of the medial edge of an outsole and midsole of a golf shoe in accordance with the subject technology.

(12) FIG. 4A is an enlarged side view of a portion of the medial edge of the outsole and midsole of the golf shoe of FIG. 4.

(13) FIG. 5 is a side view of the lateral edge of an outsole and midsole of a golf shoe in accordance with the subject technology.

(14) FIG. 6 is a front view of an outsole and midsole of a golf shoe in accordance with the subject technology.

(15) FIG. 7 is a rear view of an outsole and midsole of a golf shoe in accordance with the subject technology.

DETAILED DESCRIPTION OF THE INVENTION

(16) The subject technology improves upon the prior art of golf shoes. The advantages, and other features of the technology disclosed herein, will become more readily apparent to those having ordinary skill in the art from the following detailed description of certain preferred embodiments taken in conjunction with the drawings which set forth representative embodiments of the present technology and wherein like reference numerals identify similar structural elements. All views shown in FIGS. 1-7 are for a left shoe, the components for a right shoe being mirror images thereof. As used herein, medial edge refers to the inside peripheral edge of the shoe, generally closest to the other shoe of the user, while lateral edge refers to the outside peripheral area of the shoe, generally furthest from the other shoe of the user. The embodiments shown relate to a men's size 9.5 shoe. One skilled in the art would understand that adjustments may be made to the components shown to produce the same shoe in other sizes.

(17) Referring now to FIGS. 1A-1G and 2, a left shoe in accordance with the subject technology is shown generally at 2. The shoe 2 includes an upper 4, a midsole 6 joined to the upper 4, and an outsole 8 joined to the midsole 6. The upper 4 includes an opening 10 for the wearer to insert their left foot. Once the wearer's foot is inserted, the upper 4 provides a covering for the foot and helps hold the foot securely in place with respect to the other components of the shoe 2. The upper 4 is secured to the midsole 6. When the user's foot is placed within the shoe 2, the midsole 6 provides cushioning between the bottom of a wearer's foot and a ground surface. The outsole 8 is secured to the underside of the midsole 6 and provides traction between the shoe 2 and a ground surface. Further, the outsole 8 provides stability to the wearer.

(18) The shoe 2 has a medial edge 20 running along the inside periphery of the shoe (i.e. for a someone wearing a left shoe, the medial edge 20 would run along the right side of the left shoe) and a lateral edge 22 running along the outside peripheral of the shoe (i.e. for a someone wearing a left shoe, the lateral edge 22 would run along the left side of the shoe). The shoe has an interior region 21, located on the outsole 8 between the medial and lateral edges 20, 22.

(19) The upper 4 is usually formed from materials such as leather, synthetic materials, or textiles, or some combination of these that are stitched or adhesively bonded together, for example. The upper 4 can be secured to the midsole 6 by stitching or with cement or other adhesives using an insole board and conventional techniques known to those skilled in the art. The midsole 6 can be formed of materials such as polyurethane and/or ethylene vinyl acetate copolymer (EVA), for example. In one embodiment, the midsole is formed of a thermoplastic polyurethane that is substantially soft, having a hardness of less than 85 Shore A. Preferably, the midsole is formed from an EVA composition preferably having a hardness of less than 70 Shore A. The midsole 6 may be formed on or about the outsole 8, or formed separately and attached with an adhesive or stitching. The outsole 8 may be formed by various conventional methods. For example, one method is disclosed in U.S. Pat. No. 5,979,083 issued to Robinson et al. According to this method, first and second layers are molded together to form the outsole 8.

(20) The golf shoe 2 also includes golf cleats 24A. Golf cleats 24A can be attached to the receptacles 24 (shown in FIG. 3) by placing a golf cleat 24A into a receptacle and twisting the cleat 24A clockwise. The attached cleats 24A provide additional traction between the shoe 2 and a ground surface for the user.

(21) Referring now to FIGS. 3-7, more detailed depictions of the outsole of a left shoe, in accordance with the subject technology are shown generally at 8. The outsole 8 includes a metatarsal portion 12 positioned generally under a wearer's metatarsal bones, an arch portion 14 positioned generally under a wearer's foot arch, and a calcaneus portion 16 positioned generally under a wearer's calcaneus bone. The metatarsal and calcaneus portions 12, 16 include flex channels 18a-1, which are voids in the outsole 8 of the shoe, extending in wave-like patterns across the outsole 8.

(22) The flex channels 18a-1 allow the outsole 8 to flex and bend when a user walks or swings. The flex channels 18 a-1 generally run along the interior region 21 between the medial edge 20 and the lateral edge 22 of the outsole 8. In the embodiment shown, the outsole 8 includes eight flex channels 18a-18h across the metatarsal portion 12 and four flex channels 18i-18l across the calcaneus portion 16. The flex channels 18a-1 include substantially straight portions 36, 40 and curved portions 38 in various combinations. For example, some flex channels 18a, 18i, 18f include a first substantially straight portion 36, a second curved portion 38, and a third substantially straight portion 40. Other flex channels 18d, 18g may include, for example, just a first substantially straight portion 36 and a second curved portion 38. Still another flex channel 18c includes a first straight portion 36 and a curved portion 38 that includes two arcuate section 39a, 39b, wherein section 39a arcs in one direction and section 39b arcs in an opposing direction. In one embodiment, the radius of the arcs is less than 5 inches.

(23) In some areas, grooves 19 (seen in FIGS. 4-5) run across the midsole 6 adjacent to the flex channels 18a-1 in the outsole 8 to provide additional flexibility. One skilled in the art would recognize that depending on the desired flexibility and support, the flex channels 18a-1 may be formed using other combinations of a first substantially straight portion 36, a second curved portion, 38, and a third substantially straight portion 40, which may or may not coincide with grooves 19.

(24) Further, the total number of flex channels 18a-1 may vary depending on the desired flexibility of the outsole 8 and size of the shoe. Similarly, the depth, width and shape of the flex channels 18a-1, may be varied depending on desired flexibility of the outsole 8. The depth of the flex channels 18a-1 may be, for example, within the range of about 1 to about 5 mm or about 3.5 mm. Additionally the width of the flex channels 18a-1, or the width of portions of the flex channels 36, 38, 40, may be adjusted depending on desired flexibility. The flex channels 18a-1 may have a width ranging from about 2 to 8 mm, for example. Additionally, various flex channels 18a-1 may have different widths from one another, for example, by about 4 to 6 mm. As shown, flex channels 18a, 18c, 18e, 18g and 18j are V-shaped and flex channels 18b, 18d, 18f, 18h, 18i, 18k and 18l are U-shaped. The flex channels 18a-1 could also be trapezoidal, rectangular, W-shaped and the like. One skilled in the art would understand that various widths, depths and shapes of the flex channels, or portions thereof, could be adjusted depending on desired flexibility.

(25) In the forefoot or metatarsal portion 12, the V-shaped flex channels 18a, 18e go completely across while V-shaped flex channels 18c, 18g go substantially across the outsole 8 in the transverse direction. In contrast, the U-shaped flex channels 18b, 18d, 18f, 18h terminate at a receptacle 24. In the heel or calcaneus portion 16, the V-shaped flex channel 18j terminates at a receptacle 24 while U-shaped flex channels 18i, 18k, 18l go substantially across the outsole 8 in the transverse direction with U-shaped flex channels 18k, 18l passing across a receptacle 24.

(26) Still referring now to FIGS. 3-7, a hard base material 28 extends across the outsole 8 and surrounds the flex channels 18. The hard base material 28 provides stiffness and stability to the outsole 8. The hard base material 28 may be a material such as thermoplastic polyurethane or the like, and may have a hardness of at least 80 Shore A. The hard base material 28 does not constitute the entire outsole of the shoe. Rather, as shown in the Figures, the flex channels constitute a portion of the outsole of the shoe. The flex channels 18 are made of a relatively soft material such as EVA. In one preferred embodiment, the flex channels 18 comprise the same EVA or other material used to make the midsole 6 of the shoe. The exposed midsole areas of the shoe form the flex channels 18. The midsole (that is, the flex channels) is plainly visible to a person looking at the outsole 8 of the shoe.

(27) The outsole 8 also has a series of traction elements 30a-c, extending from the hard base material 28, which provide traction between the outsole 8 and a ground surface. A series of middle traction elements 30b protrude from the metatarsal and calcaneus portions 12, 16, running between the medial and lateral edges 20, 22 in between the flex channels 18. This placement of the middle traction elements 30b allows the middle traction elements 30b to provide traction while still allowing the outsole 8 to flex and bend. In one embodiment, the outsole 8 includes a cluster of middle traction elements 30b on the metatarsal portion 12, adjacent to the arch portion 14.

(28) Referring now to FIG. 4A, an enlarged side view of a portion of the medial edge 20 of the outsole 8 and midsole 6 of the golf shoe 2. The U-shaped flex channels 18 have a first width (W1), the traction elements 30b have a second width (W2) and the V-shaped flex channels 18 have a third width (W3), wherein W2>W1>W3. The traction elements 30b have a first depth (D1), the V-shaped flex channels 18 have a second depth (D2), and the U-shaped flex channels 18 have a third depth (D3), wherein D1>D3>D2.

(29) Referring again to FIGS. 3-7, in one embodiment, the outsole 8 also includes a forward portion 32, formed of the hard base material 28 and positioned generally under the toes of a wearer, which has a series of traction elements 30a. The forward portion 32 also includes a toe kick 44. In yet another embodiment, the outsole 8 also includes a rear portion 34, formed of the hard base material 28 and positioned below a wearer's heel along the longitudinal axis a, which has a series of traction elements 30c. Less bending and flexing is needed in the forward and rear portions 32, 34 of the outsole 8, and thus, the forward and rear portions 32, 34 may be formed entirely of hard base material 28. Additionally, the forward and rear portion 32, 34 may have clusters of traction elements 30a, 30c.

(30) The traction elements 30a-c are shaped to dig into a ground surface, providing traction between the outsole 8 and the ground surface. The traction elements 30a-c are a collection of ovals and squares in various orientations. One skilled in the art would recognize that the traction elements 30a-c may be hyperrectangle, cylindrical, triangular or any other shape suitable for providing traction.

(31) In some embodiments, ridges 26 run along the lateral edge 22 of the outsole 8 to provide addition traction between the outsole 8 and a ground surface. Particularly, the ridges 26 prevent the outsole 8 from sliding, with respect to a ground surface, along the longitudinal axis a. The ridges 26 interrupt certain of the flex channels 18e, 18g, preventing some of the flex channels 18e, 18g from running the entire width of the outsole 8 between the medial and lateral edges 20, 22.

(32) As noted above, some flex channels 18b, 18c, 18d, 18f, 18j-1 are interrupted by receptacles 24. Golf cleats 24a selectively attach to the receptacles 24 by inserting a suitable golf cleat and twisting the cleat clockwise. Attaching cleats may provide more traction between the outsole 8 and a ground surface, especially when the wearer is executing a golf shot. Further, over time the traction elements 30 and ridges 26 suffer normal wear through use. While cleats 24a can be attached, removed, and replaced through the cleat receptacles 24, the traction elements 30 and ridges 26 cannot be replaced. Thus, when replacing cleats 24a, the golfer can strategically choose the height of replacement cleats to match that of the traction elements 30 and ridges 26. For example, if the cleats are replaced after a relatively long amount of time (e.g., one year), then replacement cleats of a shorter height can be used to match the height of the traction elements 30 and ridges 26, if the traction elements 30 and ridges 26 have diminished in height as well.

(33) A logo assembly 42 is positioned along the arch portion 14 of the outsole 8 and may include a transparent layer material to protect the logo when the outsole 8 contacts a ground surface and permit visibility of the logo. One preferred material of the logo assembly 42 is the hard base material 28 described herein.

(34) When golfers swing a club, their weight shifts along both the longitudinal axis a and between the medial and lateral edge 20, 22 of the outsole 8. When golfers walk, their feet typically move along the longitudinal axis a, transferring weight between the heel and the toe.

(35) The hard base material 28 provides stiffness to the outsole 8 of the shoe which allows for support and stability when a golfer walks, and also during a golfer's swing. The flex channels 18 represent a break in the hard base material 28 which allows the outsole 8 to bend and flex around the underlying midsole 6, particularly along the longitudinal axis a, but also across the width of the shoe between the medial and lateral edge 20, 22.

(36) Typically, creating a straight channel along the outsole of a shoe allows the outsole to fold around that channel and therefore provides for bending around the axis created by that channel. In the shoe 2, the flex channels 18 do not run straight across the width of the entire shoe 2 between the medial and lateral edges 20, 22. Instead, the flex channels 18 include straight channel portions 36 and curved channel portions 38 which prevent a uniform straight channel across the entire outsole 8 around which the outsole 8 could fold. The curved channel portions 38 allow for various amounts of hard base material 28 to resist folding around the axes generally formed by each flex channel 18. Further, certain of the flex channels 18 are interrupted by receptacles 24 and/or ridges 26 which are formed of hard base material 28 and resist bending along the general axis of the respective flex channel 18. Still further, the traction elements 30b are arranged along a parallel path to the flex channels 18. Preferably, in the curved channel portions 38, the oval traction elements 30b are arranged lengthwise and, in the straight channel portions 36, the oval traction elements 30b are arranged so the elongated portion is substantially normal to the respective straight channel portion 36.

(37) Thus when a golfer shifts their weight, for example, from heel to toe, the flex channels 18 allow for some bending while the hard base material 28 resists bending and provides support and stability. Therefore when a golfer walks, and shifts their weight between their heel and toe, the outsole 8 bends around the flex channels 18 to provide comfort to the user, but the shoe remains structurally stable. Similarly, when a golfer swings, stressing the outsole 8 along the longitudinal axis a and between the medial and lateral edge 20, 22 creates a more efficient transfer of energy for the wearer. Throughout the golfer's swing the wave-like nature of the flex channels 18 allows the hard base material 28 to prevent excessive bending and helps the outsole 8 offer sufficient support and stability.

(38) Preferably, the flex channels 18a-1 and traction elements 30b are arranged in a generally parallel wave-like pattern. The wave pattern may be sinusoidal or another variation. The metatarsal portion 12 and the calcaneus portion 16 may have flex channels 18 on the same wave-like pattern or, as shown, the calcaneus portion 16 has a wave-like pattern along an axis that is at an angle with respect to the pattern axis of the metatarsal portion 12. Preferably, a section of a flex channel 18 would be considered curved is the radius of the curved section 38 is less than or equal to 5 inches. A section of a flex channel 18 that would be considered straight would have a radius of greater than 5 inches.

(39) All patents, patent applications and other references disclosed herein are hereby expressly incorporated in their entireties by reference.

(40) While it is apparent that the illustrative embodiments of the invention disclosed herein fulfill the objectives of the present invention, it is appreciated that numerous modifications and other embodiments may be devised by those skilled in the art. Additionally, feature(s) and/or element(s) from any embodiment may be used singly or in combination with feature(s) and/or element(s) from other embodiment(s). Therefore, it will be understood that the appended claims are intended to cover all such modifications and embodiments, which would come within the spirit and scope of the present invention.