Work chair having a vertically adjustable chair support
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 10, 1987
Grant Date -
N/A
app pub date -
Jun 27, 1984
filing date -
Jul 20, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The work chair is provided with a one-piece chair shell (8), in the rear region of which an integrally incorporated hinge portion (11) is formed between the lumbar region and buttocks portion (12) and the backrest portion (11). The seat shell (13) contains a base bearer (14) which forms part of an adjusting mechanism and on which the chair shell (8) is suspended for longitudinal movement by means of spring-loaded pivoting members (27, 32). The base bearer (14) and the backrest portion (10) are connected together with the aid of a control member (36) fastened by guide means (37, 38), in such a manner that a variation of the inclination of the backrest portion (10) caused by an adjusting force brings about a simultaneous variation of the inclination of the seat shell (13) in the same direction. Through the elimination of the adjusting force, the backrest portion is returned to its normal position or position of rest.
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Family
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Cited Art Landscape
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