Patent ID: 6361027
Filing Date: 2002-03-26
Classification: B60G,F16F

Abstract:
Air lift shock absorber for an automotive suspension system comprising:a damper housing filled with damping fluid; a piston assembly slidable within the damper housing and including a piston rod having a portion extending from one end of the damper housing, the damper housing and said piston assembly being movable relative to one another to dampen relative movement therebetween; a top mount having a housing adapted to abut a vehicle body and containing and engaging a first resilient force absorbing member also engaging the portion of the piston rod, the first resilient force absorbing member defining a first force transmitting path transferring damping forces from the piston rod to the housing of the top mount; an air lift mechanism for adjusting the position of the damper housing relative to the piston assembly, the air lift mechanism including a flexible sleeve sealingly connected to the damper housing and a pressure retainer extending between the sleeve and a second resilient force absorbing member connected to the housing of the top mount, a resilient jounce bumper connected to the pressure retainer and adapted to dampen impact forces from the damper housing, the second resilient force absorbing member thus defining a second force transmitting path transferring damping forces from the air lift mechanism and the jounce bumper to the housing of the top mount independently of the first resilient force absorbing member and the first resilient force absorbing member transferring damping forces from the piston rod to the housing of the top mount independently of the second resilient force absorbing member and the pressure retainer.