Rotator for prosthetic ankle joint

Details Rotator for prosthetic ankle joint Rotator for prosthetic ankle joint

1975-02-18

1976-05-18

Frinks, Ronald L.

3 2, A61F 104, A61F 108

Patent

active

039567753

ABSTRACT:
A device for joining a prosthetic foot to a prosthetic ankle block with limited, resilient rotation therebetween includes a generally cylindrical adapter or housing secured in the lower end of the ankle block, coaxial with the vertical pivot axis of the foot. An outer spool is secured within the adapter, and an inner spool freely rotates therein on two bearings disposed between the spools and spaced axially there along. A rubber annulus is disposed between the spools intermediate to the bearings, and vulcanized in place to adhere to both spools and form a resilient link therebetween. A pin extends downward from the outer spool to engage a slot in the foot and limit the rotation thereof.

REFERENCES:
patent: 2475372 (1949-07-01), Catranis
patent: 2475373 (1949-07-01), Catranis
patent: 3480972 (1969-12-01), Prahl
patent: 3842443 (1974-10-01), Weber

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