| 摘要 |
PCT No. PCT/DE97/01202 Sec. 371 Date Dec. 21, 1998 Sec. 102(e) Date Dec. 21, 1998 PCT Filed Jun. 13, 1997 PCT Pub. No. WO97/49936 PCT Pub. Date Dec. 31, 1997A pneumatic movement damper has a cylinder closed on one side, a piston that slides within the cylinder and is connected to a piston rod, a packing mounted on the piston and a throttle passage arranged in the piston for connecting the two cylinder spaces separated by the piston and the packing. The piston has a conical seat that widens away from the piston rod and a flange part adjacent to the largest diameter of the conical seat. The packing has a truncated recess that matches the conical seat and can move within limits in the axial direction between the flange part and a ring-shaped flange arranged on the piston rod at an axial distance from the flange part. Radial grooves are provided in the faces of the flange part and ring-shaped flange normal to the axis of the cylinder and oriented towards the packing. The groove provided in the flange part has a smaller cross-section than the groove arranged in the ring-shaped flange and forms the throttle passage. A flow passage is provided between the conical seat and the recess.
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