Patent ID: 6910682
Filing Date: 2005-06-28
Classification: B60G,F16F

Abstract:
1. A pneumatic-spring wheel-suspension leg for motor vehicles having a chassis, comprising: a bellows rollable up over a jacket and having a first pneumatic chamber; a hydraulic dashpot inside said bellows; a piston rod traveling oscillatingly into and out of said dashpot and attached axially and resiliently at one end to the chassis of a vehicle; a second pneumatic chamber; and valve means for blocking at least partly communication between said first and second pneumatic chambers, said valve means being actuated by said piston rod dependent on a supporting force of said piston rod against a structure of a motor vehicle, said actuation of said valve means having minimum structure for switching between the two pneumatic chambers and closing one of said pneumatic chambers; said valve means closing by an amount dependent only on the magnitude of the supporting force of said piston rod against said structure of the motor vehicle through connection means between said supporting force of said piston rod against said structure of said motor vehicle and opening of a connection between said two pneumatic chambers and thereby influencing the connection between said two pneumatic chambers by the opening of said valve means.