| 摘要 |
<p>A chair of the type either with an oscillating seat or with a seat and backrest having synchronized movements comprising: a stationary box-body (13) fixed onto a support base (14); an oscillating support (11), hinged to said box-body (13) and bearing the seating means; and a selector device (17) to lock/unlock the oscillating support (11) on the stationary body. The selector device comprises a locking element (18) and a preselection connecting rod (19) revolving independently on a pin and interconnected with a pair of elastic elements (20, 21) acting in opposition to each other. <IMAGE></p> |
