Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Leg – Foot
Reexamination Certificate
2007-02-06
2007-02-06
Stewart, Alvin J. (Department: 3738)
Prosthesis (i.e., artificial body members), parts thereof, or ai
Leg
Foot
Reexamination Certificate
active
10783559
ABSTRACT:
A prosthetic foot device includes an elongated continuous cantilever-spring, extending from an attachment section coupleable to a stump of an amputee to a toe section at a toe location of a natural foot. The cantilever-spring is elastically deformable under a load to store energy as the amputee steps onto the cantilever-spring and to release energy as the amputee steps off of the cantilever-spring. A cam is pivotally coupled to the cantilever-spring at a pivot. A resistance arm is coupleable to the stump of the amputee, and extends to a displaceable section engaging the cam. A lever arm is attached to the cantilever-spring and engages the cam. The cam operatively inter-couples the cantilever-spring and the resistance arm to elastically deform the resistance arm along with the cantilever-spring to collectively store more energy than the cantilever-spring alone.
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Roland J. Christensen, as operating Manager of RJC Development,
Stewart Alvin J.
Thorpe North & Western
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