This disclosure concerns athletic footwear and, more particularly, a shoe for golf which provides enhanced traction, stability, and comfort while encouraging proper alignment of the wearer relative to the golf ball and target as he or she prepares for the golf swing, and which allows a greater range of motion of the foot of the wearer while executing the golf swing.
The golf equipment and apparel industry is replete with examples of design improvements that intend to enhance performance on the golf course. This can be readily seen in golf clubs, golf balls, training aids, etc. However, rarely has golf footwear been linked to golf performance. More typically, innovation in golf footwear centers around comfort, weight reduction, cushioning, lacing systems, water resistivity, and fashion, all of which do not directly help the golfer to play the game better. This is a lost opportunity, considering that the feet are the body's only link to the ground during the golf swing and much of the power in a golf swing is generated from the interaction of the feet and ground. Moreover, the alignment of a golfer vis-à-vis the ball and target is established at the foot/ground interface. These important aspects of golf, and their link to performance, have largely been overlooked by the sports designers and engineers. To the contrary, current golf footwear designs tend to shift the big toe toward the center of the shoe, thus limiting the foot's range of motion and effecting overall body stability. Additionally, current golf footwear designs fail to address concentrated areas of pressure between the foot, shoe, and ground that are generated during the golf swing and none effectively assist a golfer with alignment when setting up to the ball and preparing for the golf swing.
A shoe for golf is provided herein including an upper, a midsole, and an outsole arranged to form an enclosure adapted to receive a foot of a wearer, and a toe area disposed at a front of the shoe and adapted to house toes of the wearer, where the toe area has an oblique shape delimited by an outer radius of the outsole of greater than zero.
In a further embodiment, a shoe for golf is herein provided as including an upper, a midsole, and an outsole arranged to form an enclosure adapted to receive a foot of a wearer, a toe area disposed at a front of the shoe and adapted to house toes of the wearer, where the toe area has an oblique shape delimited by an outer radius of the outsole of greater than zero, a heal stabilizer having a heel band extending around a heel portion of the shoe connected at a midfoot area to a midfoot shank which is fixed to at least one of the midsole and the outsole, where the heel stabilizer is configured to center the foot of the wearer within the shoe to provide stability to the foot, a plurality of cleats arranged on a bottom of the outsole at areas that are subject to the highest forces during use of the shoe, the plurality of cleats including a first cleat disposed in the toe area of the shoe and arranged to generally align with a big toe of the wearer, a second cleat disposed in a forefoot area of the shoe and arranged to generally align with a first ray of the foot of the wearer, a third cleat disposed at a medial side of a heel area of the shoe proximate to a rearward extent of the shoe, and a fourth cleat disposed on a lateral side of the heel portion, forward of the third cleat, and lugs generally arranged in concentric circles about each of the plurality of cleats.
Also provided herein is a golf shoe, including a plurality of cleats arranged on a bottom of the outsole at areas that are subject to the highest forces during use of the shoe, the plurality of cleats having a first cleat disposed in the toe area of the shoe and arranged to generally align with a big toe of the wearer, a second cleat disposed in a forefoot area of the shoe and arranged to generally align with a first ray of the foot of the wearer, a third cleat disposed at a medial side of a heel area of the shoe proximate to a rearward extent of the shoe, and a fourth cleat disposed on a lateral side of the heel portion, forward of the third cleat, and lugs generally arranged in concentric circles about each of the plurality of cleats, where each lug is shaped as an arcuate segment and extends along the respective concentric circle.
For a more complete understanding of this disclosure, reference is now made to the following brief description, taken in connection with the accompanying drawings and detailed description, wherein like reference numerals represent like parts, in which:
The upper 14 includes an opening 18, through which the foot of a wearer is inserted into the shoe 10, and a closure arrangement 20, such as a lacing system, in order to allow the wearer to secure the shoe 10 about the foot.
The upper 12, midsole 14, and outsole 16 are configured to give the shoe 10 an oblique shaped toe area 22. The outsole 16 includes an outermost perimeter that, in the toe area 22, delimits the forwardmost edge of the shoe 10. This edge, referred to herein as an outer radius 24, is not a straight line and instead has some degree of curvature. That is, the outer radius 24 has a length greater than 0 mm and is preferably between about 60 mm and about 80 mm. In one exemplary embodiment, the length of the outer radius 24 is about 70 mm, giving the front of the shoe 10 a somewhat flattened appearance. The outsole 16 as a second perimeter edge at the toe area 22 which is rearward and radially inward of the outer radius 24. This edge, referred to herein as an inner radius 26, is again not a straight line but instead has some degree of curvature. That is, a length of the inner radius 26 is greater than 0 mm and is preferably between about 55 mm and about 75 mm. In one exemplary embodiment, the inner radius 26 is about 66 mm. The outer and inner radii 24, 26 give the toe area 22 of the shoe 10 an oblique appearance but yet one that is slightly curved and not squared.
As can be seen particularly in
The outer radius 24, the inner radius 26, the indicia on the front band 28, and the linear feature 32 create a series of corresponding lines which are visible from above the shoe 10 by the wearer. These corresponding lines are herein collectively referred to as “linear elements”. Despite their differences in radius length and shape, these linear elements give the appearance of being generally, colinear, concentric and/or somewhat parallel. The series of linear elements creates multiple parallel visual cues which increases the Vernier Acuity of the wearer when observing their feet. Vernier Acuity in visual psychophysics refers to the process of identifying offset in parallel lines. Thresholds of Vernier Acuity are on the order of detecting approximately 10-30 seconds of arc. This threshold is approximately 10 times better than any other type of acuity task such as recognition acuity. Vernier Acuity is measured by finding the just discriminable offset for an edge separating fields of different luminance. The contrast of this stimulus is specified by the formula:
where Lstim is the luminance of the stimulus and Lsur is that of the surrounding background.
Vernier thresholds are about 4-5 sec of arc for contrasts.
The series of linear elements at the toe area 22 of the shoe 10 create a directional hyperacuity which can be used by the wearer to assist in aiming toward the target and in aligning their body with respect to the golf ball in preparation for the golf swing. Proper body positioning (i.e., alignment) during the golf swing is a critical fundamental task which enables proper movement of the body and hence the golf club throughout the swing, thus promoting effective contact with and accurate directing of the ball. Alignment in golf is typically taught by envisioning railroad tracks extending from the ball to the target, where the ball and the clubhead are on the outer track with the clubhead aimed to the target, and the feet of the golfer are positioned on the inner track and are generally arranged square thereto.
The series of linear features on the toe area 22 of the shoe 10 serve to activate the brain's hyperacuity and assist the golfer in properly setting their feet and effectively positioning and aiming their body and the clubhead relative to the intended target. That is, the series of transverse linear elements at the toe area 22 of the shoe 10 are spatially positioned to activate the Vernier Acuity of the wearer thus enabling the brain of the wearer to perceive the straightness of aim better. This allows the wearer to more accurately and more consistently align their feet, body, and clubhead along the “railroad tracks” mentioned above. In one exemplary non-limiting embodiment, the spatial positioning of the various linear elements has been found to be optimized where the distance D1 from the outer radius 24 to the inner radius 26 is about 5 mm to about 8 mm (see,
The golf shoe 10 incorporates a series of multiple visual cues 24, 26, 28, 30, 32 in the form of defined contrasting substantially colinear or concentric edges and indicia systematically and spatially arranged on the front portion of the toe area of the shoe which serve to activate the brain's hyperacuity and assist the golfer in properly positioning their body in relationship to the intended target. The edges or parallel lines can be created by forming the sole area of the toe region to have any combination of the following: an outer most horizontal edge; an inner horizontal edge, an edge created by the intersection of the sole and the upper material in the toe area; placement of indicia onto or embossed into the sole; a horizontal edge or line delimited by the upper material of the toe region of the shoe; edges or lines created by coatings or materials with varying degrees of thickness; the use of texture to create edges or lines; embossment on the upper material to form a horizontal edge or line, and the use of colors to create contrast to form an edge or line.
The various linear elements arranged at the toe area 22 of the shoe 10 have been described herein by way of example as being formed of inner and outer edges of the outsole 16, text 30, and a linear seam feature 32. The linear elements of course could be formed by any means suitable for creating transverse linear or generally linear effects on at the toe area 22 or elsewhere on the shoe 10 which would contribute to Vernier hyperacuity. For example, the linear features could be formed by any combination or modification of color contrast, printing indicia, sewing techniques, intersection of different textiles or components, shoe laces, style lines, textures, contrasting material thickness, embossing, shoe laces, hot melt, and surface treatments.
In the illustrated example, the cleat 46a is disposed in the toe area 22 of the outsole 16 of the shoe 10 and is arranged so as to be proximate to a big toe of the wearer of the shoe 10. The cleat 46b is arranged in a forefoot area of the outsole 16 and is disposed so as to be proximate to the first ray, i.e., the bones of the big toe, when the shoe 10 is worn. The cleats 46d and 46e are both disposed in a heel area of the outsole 16, the cleat 46d being arranged on the medial side of the shoe 10 toward the rear extent of the heel area and being generally aligned with the cleat 46b. The cleat 46e is disposed on the lateral side of the shoe 10, forward relative to the cleat 46d. In general, the cleats 46 are positioned as close to the outer edges (medial and lateral) of the outsole 16 in order to increase overall stability of the shoe 10.
The outsole 16 further includes a series of outwardly projecting lugs 48 arranged relative to the cleats 46. In the illustrated example, the lugs 48 are arcuate shaped segments arranged so as to trace concentric circles extending around each of the several cleats 46. See, e.g., 4, 10, and 12. The lugs 48 include an inner arc wall 50, an outer arc wall 52, opposing side walls 54, 56, and a ground contacting surface 58. The walls, 50, 52, 54, and 56 may be arranged to extend generally perpendicularly from the outsole 16, the ground contacting surface 58 being arranged orthogonally thereto and generally parallel with the surface of the outsole 16. In an alternate embodiment, one or more of the walls 50, 52, 54, 56 may extend from the outsole 16 non-perpendicularly, i.e., at an angle greater than or less than ninety degrees relative to the surface of the outsole 16. Similarly, the ground contacting surface 58 may be arranged at an angle relative to the surface of the outsole 16 so as not to be parallel thereto. The various lugs 48 may uniformly extend a similar distance from the surface of the outsole 16. Alternatively, the distance that the lugs 48 extend from the sole may vary across the bottom of the shoe 10. That is, lug height can vary across the length of the outsole 16, lug height being the distance a particular lug extends from the bottom of the shoe 10. On a particular lug 48, the size of the walls 50, 52, 54, 56 may be equal or may vary. From one lug 48 to the next lug 48, the size of the respective walls 50, 52, 54, 56 and the angles thereof relative to the outsole 16 may be equal or may vary. As illustrated herein, the lugs 48 have varying heights relative to the surface of the outsole 16 in order to provide better traction on uneven surfaces. The lugs 48 generally extend from the surface of the outsole 16 a distance of about 1.5 mm to about 3.0 mm. In one embodiment, lug height is a function of weight distribution and ground contact. Lug height is the greatest where weight and ground contact are maximized.
The configuration of the lugs 48 as arc segments arranged in concentric circles around the several cleats 46, facilitate proper movement of the feet of the wearer through the golf swing. There is a degree of rotational movement of the feet during the golf swing. The circularly arranged lugs 48 allow for rotational pivoting of the feet while still providing for traction and stability. This is particularly advantageous in the follow-through of the golf swing, i.e., the portion of the swing that occurs after the golf ball is contacted. During this part of the golf swing, the hips and upper body of the golfer turn from a position generally facing the lying position of the standing ball to a position facing the target. To facilitate this nearly ninety-degree rotation of the hips and upper body, the forward and particularly the rear foot of the golfer rotates also in the direction of the target. Inhibiting this rotation could result in strain and/or injury in the ankles and knees. The circular pattern of the lugs 48 allow for and encourage this rotation of the golfer's feet, but yet provide needed traction and stability.
The lugs 48 may also be viewed as being arranged in rays extending radially from the cleats 46. An exemplary ray 60 can be seen in
As discussed, the cleats 46a, 46b, 46d, and 46e bear the highest pressure and strain during the golf swing due to downward and rotational forces imparted thereupon. In one exemplary embodiment, the shoe 10 further includes drop-in segments 64 disposed in the outsole 16 and/or midsole 14 proximate to one or more of the cleats 46a, 46b, 46d, and 46e. See,
The material forming the drop-in segments 64 is also configured to allow for a pivoting of the shoe during the golf swing when at least some of the cleats 46a, 46b, 46d, and 46e are grounded. When the golfer executes a swing, the rotational pressure is imparted upon the cleats 46a, 46b, 46d, and 46e during the back swing, i.e., as the golfer initially recoils the golf club in preparation for striking the golf ball. During this movement, the cleats 46a, 46b, 46d, and 46e are, for the most part, fixed in and gripping the turf. The softer material forming the drop-in segments 64 will allow a slight pivot of the golf shoe 10 and the foot during this movement of the golfer and generate a torque relative to the grounded cleats 46a, 46b, 46d, and 46e. At the top of the golf swing, when the golf club is at the furthest apex of its rearward travel, this torque force is at its maximum and is released as the golfer begins the movement of the clubhead toward the ball, thus advantageously increasing forward momentum and hence clubhead speed. The rotational pivot provided by the drop-in segments 64 also serves to reduce stress and strain in the ankles and knees of the golfer.
In the embodiment illustrated in
The obliquely shaped toe area 22 of the shoe 10 is wider than traditional golf shoes in order to provide additional space for the toe region of the foot of the wearer. Traditional golf shoes have a narrow toe area in which the width dramatically decreases in a direction toward the front of the shoe. This construction angles the toes of a wearer (particularly the big toe) toward a centerline of the shoe, thus reducing the overall space occupied by the toe region of the wearer hence decreasing stability and restricting motion of the foot and shoe during the golf swing. The first ray of the foot, i.e., the bones of the big toe, is known to carry 40% of body weight during a static stance and it's proper functioning is critical for effective ambulation. Traditional golf shoes constrict the first ray and interfere with its important functionality.
In one embodiment, the toe area 22 of the shoe 10 has a width that is about 10-15% wider than that of a traditional golf shoe. Preferably, the toe area of the shoe 10 is about 12.5% wider than a traditional shoe. For example, the toe area 22 of the shoe 10 may have a width of four and a half inches in a men's shoe, U.S. size 10-11, while a similar sized traditional golf shoe has a width in the toe/forefoot area of only four inches. In order to maintain the geometry of the shoe 10, the forefoot is tapered and an oblique, less rounded toe region 22 is formed. The added room in the forefoot region allows the foot to operate with full range of motion during the golf swing and provides a larger base for contacting the ground thus achieving greater stability and ground connection. The expanded forefoot region of the shoe 10 allows the toes of the wearer to extend straight in the forward direction and are not compressed or directed toward the centerline as in traditional golf shoes. This encourages proper functioning of the first ray, while increasing balance and stability and permitting a degree of motion to the foot within the shoe 10 during the golf swing.
In one embodiment, the internal volume of the toe region 22 remains proportionally consistent from an area where a ball of the foot of the wearer is disposed when the shoe 10 is worn to an area where ends of the toes of the foot of the wearer are disposed. For example, as illustrated in
The forward edge of the toe region 22 of the shoe 10 has been expanded from an area of a big toe of the wearer toward an area that houses the remaining smaller toes. This allows more volume and freedom of movement during walking and play, and particularly during the golf swing. This forward edge of the toe region 22 is generally delimited by the inner radius 26 of the outsole 16, as can be seen for example in
A golf shoe is provided herein with a toe region at the front of the shoe having an oblique appearance. Many advantages of this construction have been discussed herein. Using an oblique, nearly square toe as a starting point for the shoe facilitates the symmetrical look of the shoe as it is viewed from the front moving toward the heel. This construction allows for the base of the shoe to be expanded under the ball of the foot for greater stability and balance while still preserving an attractive and balanced appearance.
Various embodiments of the present invention are described herein with reference to the related drawings. Alternative embodiments can be devised without departing from the scope of this invention. It is noted that various connections and positional relationships (e.g., over, below, adjacent, etc.) are set forth between elements in the following description and in the drawings. These connections and/or positional relationships, unless specified otherwise, can be direct or indirect, and the present invention is not intended to be limiting in this respect. Accordingly, a coupling of entities can refer to either a direct or an indirect coupling, and a positional relationship between entities can be a direct or indirect positional relationship.
The term “exemplary” is used herein to mean “serving as an example, instance, or illustration.” Any embodiment or design described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments or designs. The terms “at least one” and “one or more” are understood to include any integer number greater than or equal to one, i.e. one, two, three, four, etc. The terms “a plurality” are understood to include any integer number greater than or equal to two, i.e. two, three, four, five, etc. Terms such as “connected to”, “affixed to”, etc., can include both an indirect “connection” and a direct “connection.”
The descriptions of the various embodiments of the present invention have been presented for purposes of illustration, but are not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein was chosen to best explain the principles of the embodiments, the practical application or technical improvement over technologies found in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
This application is a continuation of U.S. patent application Ser. No. 16/681,913 filed on Nov. 13, 2019 which claimed the benefit of U.S. Provisional Patent Application Ser. No. 62/829,599 filed on Apr. 4, 2019, the contents of both of which said applications are incorporated herein by reference in their entirety.
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Number | Date | Country | |
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Parent | 16681913 | Nov 2019 | US |
Child | 17562139 | US |