1977-06-13
1979-01-23
Eickholt, E. H.
3 28, 3 29, A61F 104, A61F 108
Patent
active
041352548
ABSTRACT:
A prosthetic knee apparatus includes a pair of spaced side brackets depending from the upper leg prosthesis, and a housing disposed between the brackets. Extending through the housing to the brackets are anterior and posterior pivot shafts, the posterior pivot being provided with some play to permit a slight degree of pivot about the anterior shaft. A pair of leg brackets are also joined to the posterior pivot shaft with no play, and the housing is provided with a locking pin arrangement to releasably lock the leg brackets to the housing. The housing is provided with a pair of opposed braking pads which impinge on the leg brackets, the braking pads being actuated by a wedge which is driven into engagement by weight applied to the upper leg portion posteriorly of the anterior pivot shaft.
REFERENCES:
patent: 2645779 (1953-07-01), Barghausen
patent: 2667644 (1954-02-01), Johnson
patent: 2794987 (1957-06-01), Oliver
patent: 2830301 (1958-04-01), Schober
patent: 3309715 (1967-03-01), Nader et al.
patent: 3663967 (1972-05-01), Vermillion
patent: 4005496 (1977-02-01), Wilkes
patent: 4023215 (1977-05-01), Moore
patent: 4064569 (1977-12-01), Campbell
Roberts Roy D.
Weber T. Jerome
Eickholt E. H.
Hosmer Dorrance Corporation
Zimmerman Harris
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