Synchronized chair seat and backrest tilt control mechanism
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 31, 2000
Grant Date -
N/A
app pub date -
Mar 11, 1998
filing date -
Mar 12, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A chair control mechanism is provided for use on a chair having a separate seat 14 and backrest 16 that move with respect to a base 12 of the chair. The mechanism 22 includes a housing 26 supported on the base, and brackets 28, 30 secured to the seat and backrest. The seat bracket 28 is supported on the housing for pivotal movement about a horizontally extending front pivot axis 68 between an upright position and a reclining position, and the front pivot axis is located adjacent the front end of the housing. The backrest bracket 30 is supported on the housing for pivotal movement about a horizontally extending rear pivot axis 80 that is located rearward of the front pivot axis. A mechanical linkage 70, 78 is connected between the brackets at a position spaced rearward of the rear pivot axis relative to the housing for transmitting pivoting movement between the brackets, and a spring assembly 32 is connected between the housing and the backrest bracket for biasing the seat and backrest toward the upright position.
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Family
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Cited Art Landscape
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