Seat recliner adjustment mechanism

Details Seat recliner adjustment mechanism Seat recliner adjustment mechanism

1982-12-27

1984-12-11

Lyddane, William E.

Chairs and seats

Movable back

Tiltable

297366, 297370, 297377, 74541, A61G 500, G05G 506

Patent

active

044874537

ABSTRACT:
The present invention relates to a seat recliner adjustment mechanism for a wheelchair having an upper back rest frame pivotally mounted to a lower seat frame. The adjustment mechanism includes an elongate rack member pivotally mounted to the lower seat frame and having a plurality of spaced apart detent engaging means extending along one side thereof. A locking mechanism is mounted on the back rest frame and includes a detent element engageable with a selected one of the detent engaging means of the rack member for maintaining the back rest frame in a selected reclined position. The locking mechanism includes a wedge element normally biased in a locked position to urge the rack member into locking engagement with the detent element. The wedge element is moveable to a released position wherein the rack member is disengaged from the detent element to enable the back rest frame to pivot relative to the lower seat frame.

REFERENCES:
patent: 172281 (1876-01-01), Seng
patent: 1630870 (1927-05-01), Strunck
patent: 1859223 (1932-05-01), Stevensen
patent: 1975492 (1934-10-01), Wyndham
patent: 2121238 (1938-06-01), Whedon et al.
patent: 2755843 (1956-07-01), Carlson
patent: 3666292 (1972-05-01), Bartos

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