Artificial leg with bearings for rotational motion

Details Artificial leg with bearings for rotational motion Artificial leg with bearings for rotational motion

1989-04-03

1990-07-03

Green, Randall

Prosthesis (i.e., artificial body members), parts thereof, or ai

Leg

623 38, 623 49, A61F 260, A61F 262/2/66

Patent

active

049387758

ABSTRACT:
An improved artificial leg comprising a socket fitted to mate comfortably to an amputee's stump and having a vise-like attaching member mounted thereon, a stem portion having an attaching portion adapted for releasable mating with the attaching member of the socket and having a foot member comprising a semi-spherical ring secured to the lower end of the stem, a generally semi-spherical base member rotatably secured to the ring, a resilient sole covering the bottom of the base member and a boot formed of resilient material secured to the stem and serving to mormally urge the base member to a predetermined position with respect to the stem.

REFERENCES:
patent: 433497 (1890-08-01), Swank
patent: 1937870 (1933-12-01), Carnes
patent: 3707731 (1973-01-01), Morgan
patent: 4499613 (1985-02-01), Yarrow
patent: 4564365 (1986-01-01), Winer

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