| 摘要 |
A chair comprises a seat device (1) pivotably supported on a base (2) about an axis (3). A back rest (4) is pivotable relative to he seat device (1) about a second axis (5). Power means (6) is adapted to actuate the seat device (1) and back rest (4) to pivot the seat device into a forwardly inclined position. The seat device comprises a seat frame (18) and a seat member (19) forming a seat surface, said seat member being pivotable relative to the seat frame by means of an operating device (22) so that pivoting forwardly of the seat frame involves pivoting upwardly of the seat member. However, the operating device can be put out of operation by means of a control device (28). |
