The seat has a side surface part, a backrest part, and a head support (4) arranged at the backrest part and comprising supporting walls (5, 6), where distance between the walls are adjusted by a distance adjusting device (7). The device has a gear box with...

The seat (1) has a locking device (14) whose locking element i.e. locking rod, is pretensioned into locking setting by a reset force. An actuating element is operatively connected with the locking element to release the locking element from the locking set...