Ergonomic chair having the seat at a varying position

Details Ergonomic chair having the seat at a varying position Ergonomic chair having the seat at a varying position

A - Human Necessities

47

C

155/22.1

A47C 1/032 (2006.01) A47C 1/028 (2006.01) A47C 1/031 (2006.01) A47C 3/026 (2006.01)

Patent

CA 1291939

ABSTRACT An ergonomic chair has its seat portion (4) which, in addition to be adjustable as to the height, forms a variable tilting angle, positive or negative with respect to the horizontal, in consequence of the height thereof, said tilting angle being obtained through a swinging movement of the seat (4) such as to form an arc of circumfe- rence about a rotation center substantially coincident with the center of gravity (CG) of a person sitting on the chair. This swinging movement of the seat is preferably accompanied by the rotation of a lever arm (6) pivotedly mounted at an end (6a) to the stationary portion (1a) of the seat support (1) and hinged at the other end (6b) to the front side of the seat (4), the length of said lever (6) or the pivoting point with seat (4) being adjustable by a simple operation of the user to modify the variation of the tilting angle of the seat (4) in function of its height. Said lever arm (6) may be provided with some elastic feature.

585614

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