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    Ram with cushioned piston stroke
    91.
    发明授权
    Ram with cushioned piston stroke 失效
    带有活塞活塞的RAM

    公开(公告)号：US3592106A

    公开(公告)日：1971-07-13

    申请号：US3592106D

    申请日：1969-06-25

    申请人： CASCADE CORP

    发明人： BAUGHMAN GAYLORD G

    IPC分类号： F15B15/22 ,  F16J10/02 ,  F01D11/02

    CPC分类号： F16J10/02 ,  F15B15/1452 ,  F15B15/224

    摘要： A ram with a construction for cushioning the ram''s piston as it nears the end of a stroke while accommodating a fast return stroke in the piston. A metallic piston ring is loosely mounted to permit limited axial movement within an annular groove on the piston. A fluid passage connects this groove with an end of the piston. The ring on movement of the piston toward the end of a stroke moves to a position tending to close off the fluid passage, to capture cushioning fluid. With pressure fluid admitted to the ram to produce a return stroke, the ring shifts axially to a position tending to open up the fluid passage.