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Insole

  • US 4,685,224 A
  • Filed: 07/12/1985
  • Issued: 08/11/1987
  • Est. Priority Date: 12/10/1983
  • Status: Expired due to Fees
First Claim
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1. An insole comprising a continuous portion of substantially uniform thickness having formed on the underside thereof a plurality of projecting ribs arranged so as to oppose bending of said continuous portion, said ribs being uniformly spaced from and at angles to one another and arranged so as to form a labyrinth-like, non-straight, continuous air conveying channel between said continuous portion and the top-sole of a shoe when said insole is positioned within the shoe, said channel being open at the edges of said continuous portion and said ribs pumping air through said channel and past the edges of said continuous portion.

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