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Resilient inner sole for a shoe

  • US 4,345,387 A
  • Filed: 03/31/1980
  • Issued: 08/24/1982
  • Est. Priority Date: 03/31/1980
  • Status: Expired due to Term
First Claim
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1. An inner sole for a shoe, comprising:

  • a generally flat sheet member made of resilient material;

    said sheet member having a flat under surface with a plurality of openings therein which are upwardly enlarged to form air pockets, the material of said member extending across and thereby enclosing the upper sides of said air pockets;

    whereby air flows through said openings out of or into the associated air pockets in response to impacts upon the upper surface of said member;

    said sheet member also having a peripheral flange depending downwardly from the outer portion of the under surface thereof, said flange extending around most of the perimeter of said member; and

    a gap in said flange so that air may flow into or out of the space between the under surface of said member and the supporting surface of a shoe within which said inner sole is placed.

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