Sports shoe cleats
InventorAssigneeApplicationNo. 10797934 filed on 03/11/2004US Classes:36/134, Cleat (e.g., movable, detachable, etc.)36/67R, Calks36/67DDetachableExaminersPrimary: Patterson, M. D.Attorney, Agent or FirmForeign Patent References
International ClassA43B 5/00DescriptionThe present invention is directed to golf shoe cleats, and more particularly to golf shoe cleats or spikes in which the cleat is molded from a durable plastic material and includes outwardly angled traction teethand in a preferred embodiment has an anti-debris ring. BACKGROUND AND BRIEF DESCRIPTION OF THE INVENTION The three biggest complaints made about existing golf shoe spikes or cleats are lack of traction, and durability and that they need to be cleaned off during the course of a game. There have been attempts to solve these problems in the past. InDeacon et al U.S. Pat. Nos. 5,536,793 and 5,259,129, the golf cleat or spike is comprised of a plastic molding in which the traction action is provided by ridges curved in planes parallel to the shoe sole emanating out in radial fashion from thecenter of the disk-like flange and being integrally formed with and extending down from the bottom of the surface. In U.S. Pat. No. 4,723,366, a traction cleat is provided which has a metal stud infrastructure at the core of the cleat and a plasticskirt molded directly on the flange of the metal infrastructure. The curved rib structure of the above Deacon et al patents is also disclosed in Design U.S. Pat. Nos. Des. 375,192; U.S. Pat. No. Des. 372,355; U.S. Pat. No. Des. 371,453 andU.S. Pat. No. Des. 366,755. The object of the present invention is to provide an improved golf shoe cleat which has better traction and lateral stability. A further object of the invention is to provide a golf shoe cleat with improved anti-debris properties. THE PRESENT INVENTION The present invention provides a golf shoe cleat which utilizes low profile pseudo pyramid-like shaped "traction teeth". Although the pseudo-pyramid shape is preferred, other geometric shapes can be used. For example, the traction teeth can beconically shaped. In a preferred embodiment, a center tooth or wear pad protrudes straight down to provide traction, and a plurality of angled traction teeth are in a generally circular perimetrical pattern and protrude at an outward angle to providetraction and lateral stability during a golf swing. Due to the orientation of the teeth, the cleat is more durable. Moreover, a material is utilized which not only provides resilience and flexibility for traction but also possesses a durabilitycharacteristic needed to achieve an acceptable product life. In addition, the cleat of the present invention helps keep the build-up of debris to a minimum. An anti-debris ring is molded on the rim or edge of the underside of the cleat. The tractionteeth and dome-shaped outer face are designed to move debris outwardly away from the traction teeth. According to the cleat of the present invention, the outward angled traction teeth around the perimeter, unlike any other cleat, provides lateralstability and traction through the plane of a golf swing. These teeth are low in profile (e.g. are shorter than conventional spikes) to reduce damage to putting green surfaces. In addition, in the preferred embodiment, the cleat has a wear pad in thecenter. This wear pad is a weight-bearing surface. Although it may offer some traction, it is there to support the majority of the body weight placed on the cleat, tending to keep weight off the traction teeth to prolong the life of the teeth and thecleat. Because most of its body weight is directed toward the center of the cleat, the cleat wears from the inside out. As the cleat wears from the inside out, the traction teeth also wear in an outward manner. This allows the teeth to maintain thedesired outward angle needed to provide lateral traction throughout the life of the cleat. The anti-debris ring is a rib which is on the peripheral edge of the underside of the cleat. In this position the anti-debris ring tends to prevent the edge of the cleat from separating from the sole of the golf shoe, thereby precluding theentry of debris. At the same time, when the cleat is snugged down, the pressure causes the ring to more closely hug the shoe sole and preclude the entry of debris. The preferred material for the construction is a polyurethane material with about a 55D durometer hardness. However, it can be manufactured out of any suitable material with a preferred hardness range from 45D to 95D durometer hardness. Some cleats currently in the market have an annular ring of latching teeth surrounding the threaded stud and a coacting ring of complementary formations in a receptacle in the shoe sole. Other cleats on the market are provided with so-called"quick release" locking or mounting structures. Such features may be incorporated in the golf cleat of this invention. DESCRIPTION OF THE DRAWINGS The above and other objects, advantages and features of the invention will become more apparent when considered with the following specification and accompanying drawings wherein: FIG. 1 is a front view of a golf shoe cleat incorporating the invention, FIG. 2 is a side elevational view of the golf shoe cleat incorporating the invention, FIG. 3 is a back view of the golf shoe incorporating the invention, FIG. 4 is a 3/4 angle isometric view of the golf shoe spike or cleat incorporating the invention, FIG. 5 is an isometric perspective view of a golf or sports shoe with a cleat incorporating the present invention installed, FIG. 6 is an isometric perspective view of a golf cleat incorporating an annular anti-debris rib ring of traction teeth, FIGS. 7a and 7b are side elevation and bottom views of an embodiment showing a first alternative known cleat-to-shoe attachment technique, FIGS. 8a and 8b are side elevation and bottom views of a further embodiment incorporating alternative known cleat-to-shoe attachment technique, and FIG. 9 is a front view of a further embodiment in which the wear pad has been eliminated. DETAILED DESCRIPTION OF THE INVENTION Referring now to FIGS. 1-4 of the drawings, a cleat 10 is preferably of molded plastic polyurethane with about a 55D durometer hardness but which can be manufactured out of any suitable material with a preferred hardness range from about 44D toabout 95D durometer hardness. The body 11 has a domed outer face 12 with a center-pyramid shaped wear pad 13 surrounded by a circular array of pseudo pyramid-shaped traction teeth 15-1, 15-2 . . . 15-N, and in the present embodiment N is 8, so that inthe cleat illustrated, there are nine teeth with the center tooth 13 serving as a wear pad. The pseudo pyramid-shaped teeth have a curved outer face 15-0 and an angulated or faceted face 15-IN. Each of the outward angled traction teeth in the array15-1, 15-2, 15-3 . . . 15-N are traction teeth and are angled outwardly around the perimeter. This circular array of outwardly angled traction teeth 15-1, 15-2, 15-3 . . . 15-N provides lateral stability and traction through the plane of a golf swing. In one preferred embodiment this outward angulation is at an angle of about 371/2°, e.g. measured from axial line AL passing through threaded shoe mounting stud 17 to the axial line ALT of each tooth. In a preferred embodiment each traction toothhas a low profile. Moreover, these angled teeth are low in profile to reduce damage to putting green surfaces, and the peak or tip 16-1, 16-N2 . . . 16-N of each tooth 15-1, 15-2 . . . 15-N is flat or rounded. An anti-debris ring OR is formed on the peripheral edge of the planar surface face or flat base FB and coaxial with threaded mounting stud 17. This anti-debris ring strengthens the edge of the cleat and prevents it from separating from the soleof the golf shoe and precludes or forecloses the entry of grass or other debris between the cleat and golf shoe sole when the cleat has been snugged down by the application tool (not shown). This configuration of the teeth of the cleat whereby the pseudo pyramid-shaped traction teeth 15-1, 15-2 . . . 15-N are angled outward around the perimeter of body 11 provides both lateral stability and traction through the plane of a golfswing. These teeth, as noted above, are low in profile to reduce damage to the putting greens and preferably do not have sharp points. In addition, the wear pad 13 in the center of the dome-shaped body member 11 provides a weight-bearing surface. Although this may offer some traction, its main purpose is to support the majority of the body weight placed on the cleat, keeping weight off the traction teeth to prolong the life of the teeth and the cleat. Since most of the body weight is directedtoward the center of the cleat, it wears away from the inside out. As the cleats or teeth 15-1, 15-2 . . . 15-N wear from the inside out, the traction teeth also wear in an outward manner. This allows the teeth to maintained the desired outward angleneeded to provide lateral traction throughout the life of the cleat. A pair of circular (or rectangular) depressions 20, 21 are adapted to accept the conventional two-prong installation tool which fits into engagement in recesses 20, 21 to provide torque and rotation of the golf cleat so as to cause the threads 17which are engaged with are engaged with the conventional threaded cleat holes or receptacles fixed in the bottom of a conventional golf shoe as shown in FIG. 5 in which a plurality of cleats 10-1, 10-2 . . . 10-N have been installed. The threads 17 of threaded stud 20 adjacent the flat base FB of the main body member 11 are provided with a plastic fillet 22 which serves the function of locking the cleat in the threaded bore of the cleat receptacle on the shoe. In addition, some current golf cleats are provided with a series of latching teeth 17LT surrounding threaded stud 17' which coact with a complementary locking formation in surrounding the female threaded aperture in the sole of the shoe. SeeFIGS. 7a and 7b. Another cleat attachment technique shown in FIGS. 8a and 8b uses two interlocking triangles: a female receptacle in the sole of the shoe (not shown) and a male fastener structure 17MF on the cleat. One would not depart from theprinciples of this invention by incorporating such a mounting or attachment features in the golf shoe cleat disclosed herein. Moreover, while the embodiment incorporating the wear pad is preferred, the angled traction teeth can provide advantageoustraction in the absence of the wear pad and such an embodiment is indicated in FIG. 9. As noted earlier, the preferred material for construction of the shoe is a polyurethane with a 55d durometer hardness but which can be manufactured out of any suitable material with a preferred hardness ranging from about 45d to 95d durometerhardness. While the invention has been shown and described in the reference to a preferred embodiment of the invention, it will be understood that the invention is not limited thereto but may be modified, adapted and changed by those skilled in the art andstill be within the scope of the invention as defined by the following claims: * * * * * Other References
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