Low-profile positioning apparatus

Details Low-profile positioning apparatus Low-profile positioning apparatus

1991-11-27

1993-11-16

Dorner, Kenneth J.

Chairs and seats

Movable back

Tiltable

297355, 297DIG10, 29735413, B60N 222

Patent

active

052617254

ABSTRACT:
A support apparatus for supporting a user in a plurality of working positions includes a seat supported on a frame and a seat back connected to the frame for movement between a plurality of angular positions ranging between a horizontal position and an upright position. The seat back is positioned in any of the angular positions by a carriage which supports the seat back for pivotal movement about a horizontal axis and by a shifting structure which carries out translational movement of the seat back relative to the pivot axis during pivoting movement of the seat back. The shifting structure shifts the seat back toward the seat during pivotal movement toward the horizontal position and away from the seat during pivotal movement toward the upright position so that the positional relationship between the seat back and the back of a user is preserved.

REFERENCES:
patent: 1936973 (1933-11-01), Switzer
patent: 2051563 (1936-08-01), Mance
patent: 2509934 (1950-05-01), Murray
patent: 4372608 (1983-02-01), Hotta
patent: 4394047 (1983-07-01), Brunelle
patent: 4790599 (1988-12-01), Goldman
patent: 4957302 (1990-09-01), Maxwell
patent: 5040832 (1991-08-01), Zalewski

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