Pressure genartion unit has piston with piston drive moving in cylinder element, where another piston with another piston drive is moved in another cylinder element

摘要

The pressure genartion unit (1) has a piston (2) with a piston drive moving in a cylinder element (6). Another piston (12) with another piston drive is moved in another cylinder element (16). The two pistons are mechaniccaly connected. The two piston drives are arranged in series. The two drives that are coonectd with the corresonding crank drive (13) are resposnible for driving them. An independent claim is also included for a cushion arrangement, particularly for vehicle seat.