Composite rubber sheet material and sports shoe employing the same
AssigneeNippon Rubber Co., Ltd.
InventorsHideki Hayafuchi, Yoshiharu Moronaga, Kiyotaka Nakano
Life of this patent
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Abstract
A composite rubber sheet material and a sport shoe including a composite rubber sheet material includes a sponge rubber sheet and a mesh cloth having a percentage of voids in the range of 15 to 75%. The mesh cloth is inset in one side surface of the sponge rubber sheet to a depth ranging from 5 to 75% of the thickness of the mesh cloth for enhancing the stability, durability, bendability and flexibility of the composite rubber sheet material.
Claims29
A composite rubber sheet material comprising:
- a sponge rubber sheet;
- and
- a mesh cloth having a percentage of voids in the range of 15 to 75%;
- said mesh cloth being inset in one side surface of the sponge rubber sheet to a depth ranging from 5 to 75% of the thickness of the mesh cloth to limit the tension modulus and creep characteristics of the mesh cloth and the sponge rubber sheet and for absorbing tensile pressure and impact pressure for enhancing the stability, durability, bendability and flexibility of the composite rubber sheet material.
A sport shoe having an upper portion and a sole portion wherein a composite rubber sheet material overlapping a heel portion of said upper portion comprises:
- a sponge rubber sheet having a hardness of 40 to 75 according to the SRIS-0101 standards;
- and
- a mesh cloth having a percentage of voids ranging from 15 to 75%;
- said mesh cloth being inset in said rubber sheet to a depth ranging from 5 to 75% of the thickness of the cloth to limit the tension modulus and creep characteristics of the mesh cloth and the sponge rubber sheet and for absorbing tensile pressure and impact pressure for enhancing the stability, durability, bendability and flexibility of the composite rubber sheet material.
Dependencies are inferred from the claim text.