Chair with inclinable back pivoting on frame

摘要

The chair has a seat (10) which pivots on a frame (14) by an axle (A1) near its front end (10a). The back end (10b) of the seat and the lower end (12a) of the back of the chair (12) pivot on the frame by a second axle (A2). The back has a transversal axle (AT) which slides on the upper surface (S) of a stud (20) on the inner surface of the frame. The seat and back are held in an inclined position by two organs (40) that turn on an axle (A3) with a spiral groove (42) in which a slide (44), joined to the seat, engages.