Column of telescopically adjustable length
    2.
    发明授权
    Column of telescopically adjustable length 失效
    可伸缩柱长度可调

    公开(公告)号:US4183689A

    公开(公告)日:1980-01-15

    申请号:US918847

    申请日:1978-06-26

    Abstract: A column in which an inner elongated member of circular cross section is partly received in the polygonal bore of an outer, tubular member and secured against angular displacement about the common axis by guide elements secured against longitudinal movement in respective recesses of the inner member open toward the outer member and engaging the outer member in respective corners of its polygonal cross section. A manually controlled arresting mechanism permits the two column members to be arrested against relative longitudinal movement in a multiplicity of relative positions.

    Abstract translation: 其中圆形横截面的内部细长构件部分地容纳在外部管状构件的多边形孔中的柱体,并且通过在内部构件的相应凹部中抵抗纵向运动而被固定而围绕公共轴线的角位移而被固定, 该外部构件并且在其多边形横截面的相应拐角处与外部构件接合。 手动控制的止动机构允许在多个相对位置中阻止两个柱构件相对纵向运动。

    Fluid-operated actuating device
    3.
    发明授权
    Fluid-operated actuating device 失效
    流体驱动的致动装置

    公开(公告)号:US4526088A

    公开(公告)日:1985-07-02

    申请号:US444828

    申请日:1982-11-26

    Abstract: A fluid-operated actuating device of the type including an actuating cylinder member, an axially movable actuating piston rod member, and actuating fluid connection means for introducing actuating fluid to and removing actuating fluid from the actuating cylinder member so as to adjust the relative axial position of the actuating cylinder and piston members and including structure for damping the movement of the piston rod member with respect to the cylinder member.

    Abstract translation: 一种流体操作的致动装置,其类型包括致动缸构件,可轴向移动的致动活塞杆构件和致动流体连接装置,用于将致动流体引导到致动流体并从致动缸构件移除致动流体,以便调节相对轴向位置 并且包括用于阻尼活塞杆构件相对于气缸构件的运动的结构。

    Gas spring including hydraulic locking means
    4.
    发明授权
    Gas spring including hydraulic locking means 失效
    气弹簧包括液压锁定装置

    公开(公告)号:US4445671A

    公开(公告)日:1984-05-01

    申请号:US311470

    申请日:1981-10-14

    CPC classification number: F16F9/06 A47B27/16

    Abstract: A gas spring for height adjustment of drawing-tables or the like includes an arrangement for hydraulically locking the gas spring against sudden collapse due to overloading or loss of internal gas pressure. The hydraulic locking mechanism includes a pressure responsive valve which operates, in response to an excess pressure differential between the gas spring cavity and the pressurized gas chamber, either to prevent flow of the hydraulic locking medium out of the cylinder cavity or to restrict such flow to a slow, safe rate.

    Abstract translation: 用于升降台等的高度调节的气弹簧包括用于液压地锁住气弹簧以防止由于内部气体压力的过载或损失引起的突然塌陷的装置。 液压锁定机构包括压力响应阀,其响应于气体弹簧腔和加压气体室之间的过大的压差而操作,以防止液压锁定介质流出气缸腔,或者将该流动限制到 一个缓慢,安全的速度。

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