Slip-resistant shoe sole

• US 20090188132A1
• Filed: 02/25/2005
• Published: 07/30/2009
• Est. Priority Date: 07/01/2004
• Status: Abandoned Application

• Current Assignee: Nisshin Rubber Company Limited
• Original Assignee: Nisshin Rubber Company Limited
• Inventors: Nozaki, Tomohiro, Fujikawa, Eiji, Harada, Ryuji, Watanabe, Ikumasa
• Application Number:
  US11/630,666
• Publication Number:
  US 20090188132A1
• Time in Patent Office: Days
• US Class Current: 36/103
• CPC Class Codes: A43B 13/223 Profiled soles
• CPC Class Codes: A43B 3/0068 V-shaped

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.

Claims

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 μ

m.

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.