Work chair or office chair

Details Work chair or office chair Work chair or office chair

A - Human Necessities

47

C

155/34, 155/49,

A47C 1/032 (2006.01) A47C 7/40 (2006.01)

Patent

CA 1311184

ABSTRACT The invention relates to a chair, more particularly a work chair or office chair, comprising a back rest bar, whose inclination may vary in relation to the seat, and an adjustable back rest which is displaceable towards the seat by means of an adjusting device when the back rest bar is tilted back. According to the invention, a simple adjusting device for a very wide variety of chairs may be obtained by providing the adjusting device with a single articulated lever which is mounted on a bearing support carrying the seat, or on a seat carrier which can be tilted and is adapted to pivot about a horizontal pivot axis. The invention also provides for an extension of the back rest to be hinged at the end of one arm of the articulated lever, the end of the other arm of the lever being adapted to be pivoted, by means of a retaining bolt or the like, on the back rest bar and/or on the seat carrier, so that, when the back rest bar is tilted back and/or the seat carrier is lowered, the one arm of the articulated lever displaces the extension, and thus the back rest, towards the bearing support or seat carrier.

587261

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