Chair with synchronized tilting seat and back

Details Chair with synchronized tilting seat and back Chair with synchronized tilting seat and back

A - Human Necessities

47

C

A47C 1/032 (2006.01)

Patent

CA 2309924

Chair with a seat and back tilting in a synchronized way, comprising: a base structure (14) a seat support structure (18) pivoted to the base structure (14) about a first transverse axis (22), a back support structure (20) pivoted to the base structure (14) about a second axis (24) parallel to the first, articulation means (48) capable of synchronizing the tilting movements of the seat and the back with each other, elastic means (32) tending to push the seat (12) and the back (16) towards a forwardly inclined position and tending to oppose rearward tilting of the seat (12) and the back (16), means (54, 68') to selectively stop the forward tilting travel of the seat and the back in a normal sitting position and in a forwardly inclined position, and means (56, 68") to immobilize the seat (12) and the back (16) in at least one operating position. A pair of tilting stop members (54, 56) fixed to the seat supporting structure (18) or the back supporting structure (20) are provided and act together with corresponding immobilizing members (68', 68") which slide independently of each other in a direction parallel to the tilting axis (24) of the said stop members (54, 56) between a non-operating position and an operating position.

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