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Molded elastomeric prosthetic foot having energy-storing articulated keel

  • US 4,652,266 A
  • Filed: 03/07/1986
  • Issued: 03/24/1987
  • Est. Priority Date: 03/07/1986
  • Status: Expired due to Fees
First Claim
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1. A prosthetic foot, which comprises:

  • (a) a mass of resilient flexible elastomer formed into the general shape of a human foot, and(b) an articulated keel contained in said mass,said keel having at least two links,said keel having energy-storing resilient means at adjacent ends of said links,said energy-storing resilient means being so related to said links as to store energy when a forward link pivots upwardly relative to the link rearwardly adjacent thereto, as the stance phase of a walking or running movement is approached, and then during toe-off to release energy and cause such forward link to pivot downwardly relative to said link rearwardly adjacent thereto,said resilient means and said mass cooperating with each other to alternately store and release energy during walking and running.

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