Slip-resistant shoe sole

Abstract

The slip resistant shoe sole 1 of the invention comprises a plurality of ground contact projections 3 formed on the ground contact side of the sole base 2 with a predetermined gap between adjacent ground contact projections 3 in the longitudinal direction of the base 2, the ground contact projections 3 having a V-shaped horizontal cross section, having inclined reinforcements 5 provided at the roots of the ground contact projections 3 on the base 2 , and being formed using an elastomeric polymer with a JIS-A hardness of 45 to 80 as measured at 20° C.

1 . A slip resistant shoe sole comprising a plurality of ground contact projections formed on the ground contact side of the sole base with a predetermined gap between adjacent ground contact projections in the longitudinal direction of the base,
 the ground contact projections having a V-shaped horizontal cross section, having inclined reinforcements provided at the roots of the ground contact projections on the base, and being formed using an elastomeric polymer with a JIS-A hardness of 45 to 80 as measured at 20° C.   
     
     
         2 . A slip resistant shoe sole according to  claim 1  wherein the ground contact projections formed with a predetermined gap between adjacent ground contact projections in the longitudinal direction of the base are arranged in a plurality of columns, with each column of ground contact projections being spaced apart from adjacent columns thereof by a predetermined gap in the transverse direction of the base. 
     
     
         3 . A slip resistant shoe sole according to  claim 1  wherein the ground contact projections formed with a predetermined gap between adjacent ground contact projections in the longitudinal direction of the base are arranged in a plurality of columns, with each column of ground contact projections being connected to an adjacent column thereof and being spaced apart from the other adjacent column thereof by a predetermined gap in the transverse direction of the base. 
     
     
         4 . A slip resistant shoe sole according to  claim 1  wherein the ground contact projections formed with a predetermined gap between adjacent ground contact projections in the longitudinal direction of the base are arranged in a plurality of columns, with each column of ground contact projections being connected to both adjacent columns thereof. 
     
     
         5 . A slip resistant shoe sole according to  claim 1  comprising first and second group regions separated from each other, the first group region having V-shaped ground contact projections arranged in such a manner that the V shape opens toward the toe end, and the second group region having V-shaped ground contact projections arranged in such a manner that the V shape opens toward the heel end. 
     
     
         6 . A slip resistant shoe sole according to  claim 5  wherein the first and second group regions are front and rear regions separated from each other. 
     
     
         7 . A slip resistant shoe sole according to  claim 6  wherein a third region not having the ground contact projections is provided between the first group region and the second group region. 
     
     
         8 . A slip resistant shoe sole according to  claim 1  wherein the opening angle of the V-shape of the ground contact projections is in the range of 45 to 140°. 
     
     
         9 . A slip resistant shoe sole according to  claim 1  wherein the ground contact projection surface has a surface roughness of not more than 28 μm. 
     
     
         10 . A slip resistant shoe sole according to  claim 1  which is formed of at least one elastomeric polymer selected from the group consisting of synthetic rubbers, natural rubbers, ethylene-vinyl acetate copolymers, polyurethane, and polyvinyl chloride, together with a rubber compounding agent.