| 摘要 |
A piston (1) with a piston ring (10) for a hydraulic or pneumatic unit fitted with a damping device and is mounted on a piston rod, dividing a cylinder (9) into two working areas and consisting of at least two parts (2, 9) that are adjacent to a surface (4) extending perpendicularly to the axis of symmetry (5). The piston ring (10) has an axial extension (14) that is several times greater than the thickness (15) of the wall of the ring and is disposed in an outer circumferential groove (6) that extends over both parts (2, 3). The invention provides a piston that prevents rumbles and is easy to produce, requiring only a few components.
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