Footwear cushinoning spring

CAFC
  • US 5,060,401 A
  • Filed: 02/12/1990
  • Issued: 10/29/1991
  • Est. Priority Date: 02/12/1990
  • Status: Expired due to Term
First Claim
Patent Images

1. An article of footwear comprising:

  • an upper,an outsole including a first upper surface, a first lower surface and a first external side wall between the perimeters of said first upper and lower surfaces,a midsole provided between said outsole and said upper,said midsole having a second upper surface upon which a sole of a foot is positioned during use of said article of footwear, a second lower surface, and a second external side wall between the perimeters of said second upper and lower surfaces, andan external cushioning spring comprising an angled strip of resilient elastic material, one end of said strip is fixed on said first side wall at location at least 3 mm below said second upper surface of said midsole, and the other end of said strip is fixed on said second sidewall at least 3 mm vertically above said location, such that a vertical force on said footwear created by a wearer of said footwear striking said outsole on a solid surface causes said angled strip to bend between said ends and absorb a portion of said force.

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