Resilient, all-surface soles for footwear
OwnerSidney Kastnerinventor
Life of this patent
Estimating the term…
Abstract
A resilient shoe sole having a less resilient outer layer and a more resilient inner layer, and retractable studs anchored in the inner, more resilient layer. The bottom surface of the sole has annular grooves formed around the tip portions of the studs to permit those portions to flex when pressure is applied to the bottom surface, as during walking on a hard surface.
Claims8
A resilient, all-surface solo for footwear, said sole having a bottom, work contacting surface and an upper surface sad being formed from a resilient material of substantial thickness located between said surface and being subject to compressive deformation, comprising:
- a plurality of studs mounted in said sole, each of said studs having an anchor portion embedded in said resilient material, a tip portion extending slightly beyond the plane of said bottom surface of said sole, and a shaft connecting said anchor portion and said tip portion,
- said resilient material being non-uniform in its degree of resilience and being less resilient at an exterior portion at said bottom surface of said sole and more resilient at an interior portion of said sole,
- said anchor portion being embedded in said sole at said more resilient portion and having a body of said more resilient material positioned between it and said upper surface, so that when said footwear is worn and compressive deformation is applied to said bottom surface of said sole, said tip portion is caused to retract within said sole by force directed by said stud anchor against said more resilient interior portion while said less resilient exterior portion of said sole provides wear resistance when said bottom surface of said sole contacts hard surfaces as said footwear is worn.
A resilient, all-surface sole for footwear, said sole having a bottom, work contacting surface and an upper surface and being formed from a resilient material of substantial thickness located between said surfaces and being subject to compressive deformation, comprising:
- a plurality of studs mounted in said sole, each of said studs having an anchor portion embedded in said resilient material, a tip portion extending slightly beyond the plane of said bottom surface of said sole, and a shaft connecting said anchor portion and said tip portion,
- said resilient material being non-uniform in its degree of resilience and being learn resilient at an exterior portion at said bottom surface of said sole and more resilient at an interior portion of said sole,
- said anchor portion being embedded in said sole at said more resilient portion, said bottom surface of said sole being formed with a recess at the location where said tip portion extends outwardly from the plane of said bottom surface,
- so that when said footwear is worn and compressive deformation is applied to said bottom surface of said sole, said tip portion is caused to retract within said sole by force directed by said stud anchor against said more resilient interior portion and said tip portion flexes in said recess formed at said location where said tip portion extends beyond said sole surface while said less resilient exterior portion of said sole provides wear resistance when said bottom surface of said sole contacts a hard surface as said footwear is worn.
Dependencies are inferred from the claim text.