Patent ID: 6032961
Filing Date: 2000-03-07
Classification: B60G,F16F

Abstract:
A piston-cylinder unit for installation between a vehicle body and a wheel guide part of a vehicle, comprising:a fluid-filled cylinder having a closed end and an open end;a piston rod guide mounted on said open end of said cylinder;a piston rod axially movably mounted through said piston rod guide having an internal end in said cylinder and an external end outside of said cylinder;a piston mounted on said internal end of said piston rod for axial movement within said cylinder;a first support part connected to said cylinder and a second support part connected to one of said piston rod and the vehicle body, a position of said second support part being axially adjustable relative to said first support part;a spring surrounding said piston rod and mounted between said first and second support parts, said spring being liftable from one of said support parts by a predetermined distance such that said spring is activated at a functional point during compression of said piston-cylinder unit; andan adjustment device for adjusting a position of said functional point of said spring, wherein said adjustment device comprises an inner part having a larger diameter portion and a smaller diameter portion, said inner part comprising first and second running surfaces corresponding to larger diameter portion and said smaller diameter portion, said adjustment device further comprising a hydraulically axially adjustable outer part sealed by first and second seals relative to said first and second running surfaces, respectively, and wherein said outer part comprises a hydraulic port and forms said first support part.