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    • 1. 发明授权
    • Piston assembly
    • 活塞总成
    • US5794517A
    • 1998-08-18
    • US631294
    • 1996-04-09
    • Juergen Emig
    • Juergen Emig
    • F16F9/36F16J1/00F16J9/00
    • F16F9/368F16J1/006F05C2225/04F05C2253/12Y10T29/49261Y10T29/49265
    • A piston assembly that is movable back and forth parallel to its axis in a cylindrical housing, comprising a piston-like support part made of a hard material and a guide ring made of a polymer. The guide ring surrounds the support part along a portion of the axial length of the piston. The support part and the guide ring are joined to each other via frictional and/or form locking provided by mating between grooves on the support part and a corresponding number of radial projections on the guide ring. A set of axially spaced apart sealing lips, integrally molded with the guide ring, extends axially beyond the grooves to provide a seal with respect to the cylinder wall.
    • 活塞组件,其可在平行于其轴线的圆柱形壳体中前后移动,包括由硬质材料制成的活塞状支撑部分和由聚合物制成的导向环。 引导环沿着活塞的轴向长度的一部分围绕支撑部分。 支撑部分和引导环通过在支撑部分上的凹槽之间的配合和导向环上的相应数量的径向突出部提供的摩擦和/或形状锁定彼此连接。 与引导环一体模制的一组轴向间隔开的密封唇缘轴向延伸超过凹槽以提供相对于气缸壁的密封。