Multi-position chair control mechanism for synchronously adjusting the seat and backrest of a chair
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 10, 2001
Grant Date -
N/A
app pub date -
Nov 20, 1998
filing date -
Jan 16, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A seat adjustment mechanism for a chair includes a first handle which controls the height of the seat above a surface supporting the chair. A second handle allows the user to selectively lock the seat at a user selected angle relative to the supporting surface. As the seat is tilted into a desired position, the seat adjustment mechanism provides limited horizontal and vertical movement of the seat to maintain the chair in an ergonomically correct position. The mechanism includes a housing or enclosure adapted for connection to a pedestal, and a seat bracket for mounting to the underside of the seat. An intermediate bracket is pivotably mounted to the lower enclosure. One end of the seat mounting bracket is pivotably connected to an end of the intermediate bracket, and the other end of the seat bracket is interconnected with the lower enclosure via a link arrangement. A selectively operable locking mechanism is interconnected between the lower enclosure and the intermediate bracket, for selectively preventing and allowing angular movement of the intermediate bracket relative to the lower enclosure, to lock the seat in a predetermined angular position or to enable the seat to pivot relative to the pedestal.
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Family
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