Short shoe spike
First Claim
1. A removable sport shoe spike for attachment to the sole of a sport shoe wherein the sole has at least one internally threaded socket for receiving the spike, the spike comprising:
- (a) a disc having a top portion facing the sole of the shoe and having an opposing bottom portion connected to the top portion, the bottom portion engaging a ground surface when the spike is attached to the shoe;
(b) a cylindrical threaded post extending perpendicularly from the center of the top of the disc, the threaded post being adapted lo be threadedly received by the threaded socket in the shoe sole; and
(c) at least 19 spaced apart nubs extending perpendicularly outwardly from the bottom portion of the disc for providing traction between the shoe and the ground surface with nominal impact on the ground surface from gripping the ground surface with the nubs, the nubs having at least three different sizes, wherein the ratio of the length of the largest size nubs to the length of the smallest size nubs is approximately 1.5 or greater, and being dispersed substantially uniformly across the bottom portion of the disc in a close-packed hexagonal lattice arrangement.
1 Assignment
0 Petitions
Accused Products
Abstract
A replaceable spike for sport shoes, molded from a durable plastic-type material, comprising a main body, concavo-convex disc having a top portion and a bottom portion. The top portion has a threaded post extending outwardly for removably attaching the spike to the sole of the shoe. The bottom portion, which is connected to the top portion, contains a plurality of nubs extending outwardly from the bottom portion for providing traction between the shoe and a supporting ground surface, while alleviating damage to the ground surface. Preferably, the nubs are at least three different sizes (small, medium, and large), based upon a fractal-like design, to provide surface roughness on multiple scales for increased traction.
52 Citations
18 Claims
-
1. A removable sport shoe spike for attachment to the sole of a sport shoe wherein the sole has at least one internally threaded socket for receiving the spike, the spike comprising:
-
(a) a disc having a top portion facing the sole of the shoe and having an opposing bottom portion connected to the top portion, the bottom portion engaging a ground surface when the spike is attached to the shoe;
(b) a cylindrical threaded post extending perpendicularly from the center of the top of the disc, the threaded post being adapted lo be threadedly received by the threaded socket in the shoe sole; and
(c) at least 19 spaced apart nubs extending perpendicularly outwardly from the bottom portion of the disc for providing traction between the shoe and the ground surface with nominal impact on the ground surface from gripping the ground surface with the nubs, the nubs having at least three different sizes, wherein the ratio of the length of the largest size nubs to the length of the smallest size nubs is approximately 1.5 or greater, and being dispersed substantially uniformly across the bottom portion of the disc in a close-packed hexagonal lattice arrangement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
(a) the ratio of the number of small nubs to large nubs is about 3;
1; and
(b) the length of the large nubs is about twice the length of the medium nubs, and the length of the medium nubs is about twice the length of the small nubs.
-
-
13. A removable sport shoe spike for attachment to the sole of a sport shoe wherein the sole has at least one internally threaded socket for receiving the spike, the spike comprising:
-
(a) a disc having a top portion facing the sole of the shoe with an opposing bottom portion to engage a ground surface when the spike is attached to the shoe;
(b) a threaded post extending perpendicularly from the center of the top portion of the disc, the threaded post being adapted to be threadedly received by the socket in the shoe sole;
(c) a countersunk hole formed through the center of the disc and extending up through the center of the threaded post;
(d) a tapered locking screw, the locking screw being sized to cooperate with the countersunk hole of the attachment means such that the post expands laterally as the screw is driven into the countersunk hole to securely fasten the spike to the shoe; and
(e) at least 19 spaced apart nubs extending perpendicularly outwardly from the bottom portion of the disc for providing traction between the shoe and the ground surface with nominal impact on the ground surface from gripping the ground surface with the nubs, the nubs having at least three different sizes, the sizes including large, medium and small, wherein the ratio of the length of the large size nubs to the length of the medium size nubs is approximately equal to the ratio of the length of the medium size nubs to the length of the small size nubs, and being dispersed substantially uniformly across the bottom portion of the disc in a close-packed lattice arrangement. - View Dependent Claims (14, 15, 16, 17)
(a) the nubs are tapered and circular in cross-section, the nubs having a length, and upper end, a lower end, an upper diameter, and a lower diameter, the upper end being connected to the bottom portion of the disc and the lower end engaging the ground surface, and the upper diameter being larger than the lower diameter;
(b) the length of the large size nubs is about 0.15 inches to about 0.17 inches;
(c) the ratio of the number of small size nubs to medium size nubs is about 3;
1 and the ratio of the number of medium size nubs to large size nubs is about 2;
1; and
(d) the bottom portion of the disc has large nubs arranged equidistant from each other around the perimeter of the bottom portion of the disc.
-
-
15. The spike of claim 13, wherein the spike is of integral construction and formed from a resilient plastic.
-
16. The spike of claim 13 wherein:
-
(a) the bottom portion of the disc includes a pair of installation engagement holes;
(b) the top portion of the disc has a generally concave curve with respect to the shoe sole and the bottom portion has a generally convex curve such that a spring effect is created when the spike is tightened against the shoe; and
(c) the top portion of the disc is dimpled in texture for fitting in a snug and gripping manner against the sole.
-
-
17. The spike of claim 13, wherein the spike is of integral construction and formed from a resilient plastic.
-
18. A method of providing secure footing for a sport shoe with a removable spike on turf, wherein the turf contains blades of grass, the method comprising the steps of:
-
(a) providing a sole on the bottom of the sport shoe and providing at least one internally threaded socket in the shoe sole for receiving the spike;
(b) forming the spike from a resilient plastic, the spike having a top disc portion facing tie sole of the shoe and having an opposing bottom portion engaging the turf when the spike is attached to the shoe;
(c) extending a threaded post perpendicularly outwardly from the center of the top of the disc, the threaded post being adapted to be threadedly received by the threaded socket in the shoe sole;
(d) extending at least 19 spaced apart nubs perpendicularly outwardly from the bottom portion of the disc for providing traction between the shoe and the turf with nominal damage to the turf from gripping the turf with the nubs, the nubs having at least two different sizes, wherein the ratio of the length of the largest size nubs to the length of the smallest size nubs is approximately 1.5 or greater, and being dispersed substantially uniformly across the bottom portion of the disc in a hexagonal close-packed lattice arrangement;
(e) securing the spike to the sole of the shoe;
(f) placing the spike in contact with the turf;
(i) horizontally engaging the turf with the nubs to prevent the shoe from slipping by gripping the blade of grass with the nubs.
-
Specification