Patent ID: 6915595

Claim:
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.