Patent ID: 6814348
Filing Date: 2004-11-09
Classification: B61G,F16F

Abstract:
Traction/compression buffer for coupling devices on rail and wheel-mounted vehicles, comprising:a housing and a piston element that projects out of said housing on one side and which can be moved out of a zero position in two directions against the resistance of a spring device and a damping device, wherein for damping the return movement of the piston element out of the position in which it is drawn out of the housing in the direction of the zero position, there is provided a hydraulic damping device which comprises a ring-shaped hydraulic working chamber that surrounds the piston element and is connected to an overflow chamber by at least one overflow channel, wherein said ring-shaped hydraulic working chamber is closed axially by an annular piston that is guided sealingly on an inner surface of the housing and on an outer surface of the piston element.