Lift apparatus for use with a chair

Details Lift apparatus for use with a chair Lift apparatus for use with a chair

1990-10-19

1992-01-21

Dorner, Kenneth J.

Chairs and seats

Movable bottom

Tiltable

297337, 297DIG10, A47C 320

Patent

active

050823272

ABSTRACT:
A portable lift apparatus for use with chairs, seats and the like comprises a bottom portion that is to be placed atop the seat bottom of the chair and a top portion pivotally mounted to the bottom portion. Support brackets are fixed to the top and bottom portions for mounting the top portion for pivotal movement between a lowered position, a raised position and a neutral position intermediate its raised and lowered positions. Springs are provided for urging the top portion toward its raised position. Latches are provided for releasably securing the top portion in the lowered and neutral positions and comprises means for preventing the top portion from becoming unlatched while in the neutral position. The latches further comprise hook-shaped members attached to the top and bottom portions adapted to partially overlie one another to define a latch opening. A latch pin is movably mounted within the latch opening for movement between an unlocking position and an locking position.

REFERENCES:
patent: 1004975 (1911-10-01), Blackman
patent: 2850077 (1958-09-01), Dawson
patent: 3158398 (1964-11-01), Stryker
patent: 3479087 (1969-11-01), Burker
patent: 3659897 (1972-05-01), Wright
patent: 4688851 (1987-08-01), Whiteford

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