Prosthetic foot and keel therefor having progressive stiffening under increasing load
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United States of America Patent
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-
Aug 27, 1996
Grant Date -
N/A
app pub date -
Sep 30, 1993
filing date -
Sep 30, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A prosthetic foot having a keel formed by a flexible sole plate connected to the lower end of an ankle portion that is attachable to a user's leg or leg prosthesis. A plurality of resilient bending ribs extend from the angle portion to spaced apart locations on the upper surface of the sole plate to resiliently bias the sole plate to a neutral configuration. As the forward portion of the sole plate is progressively loaded, the sole plate flexes causing the bending ribs to deflect until they successively stack up against each other, thereby progressively stiffening the keel.
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