Cleat for boot sole and the like
First Claim
1. A cleat or calk comprising a generally cup-shaped spike member having a base and a plurality of spike elements affixed to said base and extending from one side thereof in generally normal relation to said base, mounting shank means cooperative with said base in a manner to enable mounting of the cleat or calk on a mounting surface, and resilient means cooperative with said mounting shank means and said spike member, said resilient means being operative to enable resilient mounting of the spike member on the mounting surface and being operative to effect self-leveling of the spike member when released from an uneven underlying surface.
2 Assignments
0 Petitions
Accused Products
Abstract
A cleat or calk for use with boot soles and the like to provide enhanced gripping and wear life includes a generally cup-shaped spike member defining a plurality of pointed spike elements spaced about and projecting from a base adapted for mounting on a boot sole through a mounting shank and sole-mounted cleat anchor. In one embodiment, spring means cooperates with the spike member and mounting shank to enable limited pivotal movement of the spike member when mounted on a boot sole so as to acommodate uneven surfaces engaged by the spike member, while effecting self-leveling of the spike member upon release from the underlying surface.
67 Citations
28 Claims
- 1. A cleat or calk comprising a generally cup-shaped spike member having a base and a plurality of spike elements affixed to said base and extending from one side thereof in generally normal relation to said base, mounting shank means cooperative with said base in a manner to enable mounting of the cleat or calk on a mounting surface, and resilient means cooperative with said mounting shank means and said spike member, said resilient means being operative to enable resilient mounting of the spike member on the mounting surface and being operative to effect self-leveling of the spike member when released from an uneven underlying surface.
- 10. A cleat or calk assembly for mounting on a boot sole or the like to enhance gripping of the sole with an underlying surface, said cleat or calk comprising, in combination, a generally cup-shaped spike member including a base having an opening at its center axis and a plurality of pointed spike elements extending from a common side of said base in spaced generally parallel relation to said center axis, a shoulder bolt extending through said central opening in said base and adapted for mounting relation with a cleat anchor fixed to the boot sole, and spring means mounted on said shoulder bolt and cooperative with said spike member so as to enable pivotal flexing and self-leveling of said spike member relative to said shoulder bolt.
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15. In a boot for use on rough terrain and the like which includes a sole having an inner surface and an outer exposed surface and being capable of flexure;
- the combination therewith comprising at a plurality of calk-mounting receptacles each having a tubular sleeve extending through an opening in the sole, a corresponding number of cup-shaped calks each having a substantially planar base and three spike elements fixed to the base and extending from one side thereof in generally normal relation to said base, said spike elements being substantially equidistantly spaced about a center axis of said base and being of generally equal triangular configuration so as to define pointed ends lying in a common plane substantially parallel to said base, and mounting shank means cooperative with the center of each calk base and mountable in a corresponding sleeve to secure said base against the outer surface of said sole with said spike elements extending outwardly in generally normal relation to the sole, said spike elements and the flexure of said sole being cooperative to provide a tripod contact effect wherein each calk undergoes self-leveling by distributing contact forces substantially equally between its spike elements.
- View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
Specification