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Outsole for athletic shoe

  • US 4,392,312 A
  • Filed: 10/14/1981
  • Issued: 07/12/1983
  • Est. Priority Date: 10/14/1981
  • Status: Expired due to Fees
First Claim
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1. An outsole for an athletic shoe, comprising:

  • a substantially planar outsole member having a plurality of projections therefrom;

    said projections including a pluralty of first projections and a plurality of second projections, said second projections being longer than said first projections;

    each said first projection having a shape characterized by three identical partially-overlapping frustoconical bodies, each having a major axis, said major axes being parallel to each other, said major axes defining the apexes of an equilateral triangle, said shape including fillet portions connecting the sides of said identical frustoconical bodies;

    each said second projection having a shape characterized by three partially-overlapping frustoconical bodies of equal height and unequal volume, two said bodies being smaller than a third said body, said third body being disposed between said smaller bodies, each said body having a major axes, said major axes defining points on an arc, said shape including fillet portions interconnecting the sides of said frustoconical bodies, said shape defining a convex side and a concave side.

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