Prosthetic foot

Details Prosthetic foot Prosthetic foot

A - Human Necessities

61

F

3/140

A61F 2/66 (2006.01)

Patent

CA 1071356

ABSTRACT OF THE DISCLOSURE The foot comprises a keel of hard material such as wood and having a flat attachment surface, a curved instep portion and a planar diminished heel portion. Re- cesses are formed above and below the front ends of the toe portion and a resilient reinforcing tongue portion is secured within each recess. These tongues extend forward- ly of the keel and are connected together with a relative- ly dense foamed plastic therebetween so that the resis- tance of the tongues and of the plastic controls the flex- ural resistance of the toe portion. The shape of the heel portion permits the maximum amount of foam possible to be provided at the heel so that the density of the heel is variable and controllable by the foaming process. The final foam process envelopes the keel with the exception of part of the flat top, in one-piece moulded rubber or synthetic plastic foam so processed as to produce a skin on the exterior surface. The thickness of foam at the rear upper area behind the flat upper surface of the keel is relatively small thus preventing any tendency of the keel to separate from the foam at this point.

293627

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