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Three dimensional shoe vamp air cushion

  • US 6,128,837 A
  • Filed: 06/16/1997
  • Issued: 10/10/2000
  • Est. Priority Date: 06/15/1996
  • Status: Expired due to Fees
First Claim
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1. A three dimensional shoe vamp air cushion comprisinga curved upper sheet and a curved lower sheet,a hollow interior formed between sealed peripheral edges of said lower sheet and said upper sheet, said hollow interior being defined between two opposed side edges and two opposed ends,said sheets each having lengthwise surfaces shaped so as to be both curving inwardly, andsaid upper sheet and said lower sheet being continuously smooth surfaces between said side edges and said two opposed ends, each having cross-sections of curved lines,a surface area of said upper sheet being larger than a surface area of said lower sheet.

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