Prosthetic limb with weight-responsive joint lock

Details Prosthetic limb with weight-responsive joint lock Prosthetic limb with weight-responsive joint lock

1975-01-20

1976-01-27

Frinks, Ronald L.

3 28, A61F 104, A61F 108

Patent

active

039342735

ABSTRACT:
In a knee structure for a prosthetic limb which allows the shin portion to pivot with respect to the thigh portion about an axle fixed to the shin portion and passing through aligned openings in the thigh portion, a brake-band is disposed slightly less than 360.degree. around the axle, wherein the lower end of the band is pivotably anchored around a pin fixed to the thigh portion and disposed parallel to the axle. The upper end of the band responds to the relatively downward motion of the thigh portion when weight is supported thereby to cause a braking action between the band and axle. A drag adjustment means is provided wherein the thigh portion bears against the upper band and, while the aligned openings in the thigh portion restrain any downward movement of the axle.

REFERENCES:
patent: 3694823 (1972-10-01), May
patent: 3723997 (1973-04-01), Kolman
patent: 3863274 (1975-02-01), Glabiszewski

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