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    Improvements in shock absorbers
    6.
    发明专利
    Improvements in shock absorbers 未知

    公开(公告)号：GB726361A

    公开(公告)日：1955-03-16

    申请号：GB1437553

    申请日：1953-05-21

    Applicant: ELECTROL INC

    Inventor： ASHTON BENJAMIN N ,  WULFF ROY A

    IPC: F16F9/516

    Abstract: 726,361. Hydraulic shock-absorbers. ELECTROL Inc. May 21, 1953 [May 23, 1952], No. 14375/53. Class 108 (3). A hydraulic shockabsorber comprises a piston 39 having two portions 40, 42 which have openings 53, 54 in staggered relation ship, the piston portions 40, 42 being capable of axial movement relatively one to the other, to cover and uncover the openings, and so vary the fluid flow past the piston, the piston also having a metering slot 51, co-operating with a metering bar 46, secured to the inner wall of the cylinder. The piston portion 40 is rigid with the piston rod 32, and the portion 42 is keyed to, but axially movable on, the piston rod 30 against the action of a spring 44. The openings 53, 54 are in the form of sector-shaped ports. On the outward stroke of the piston rod 30, the piston sections abut, and the ports 53, 54 are closed. Liquid flow past the piston takes place through one of the slots 54 and the meterslot. On the inward piston stroke, the piston section 42 is deflected against the spring 44, and flow occurs freely through the ports 53 and 54. In a modified construction (Fig. 4, not shown), the piston rod 30 does not extend through the left-hand cylinder head, and connection is accordingly made from the cylinder to an external reservoir. The ports 53, 54 may alternatively be of circular or polygonal shape. The profile of the bar 46 may have hills and valleys, or may be stepped as required by the performance of the shock-absorber.

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