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    • 8. 发明授权
    • Apparatus for associating an electrical device with a mounting therefor
    • 用于将电气设备与其安装件相关联的设备
    • US4422062A
    • 1983-12-20
    • US433077
    • 1982-10-06
    • Bruce A. BillerHenry W. SchererRoy Swanson
    • Bruce A. BillerHenry W. SchererRoy Swanson
    • H01H31/12H01H71/10
    • H01H31/125
    • A pull-ring for an electrical device, such as a high-voltage fuse, which may be placed in a mounting. The pull-ring operates a latch, which is capable of holding the fuse closed in the mounting, only when it is reciprocated. The pull-ring is pivotable independently of its reciprocation without affecting the condition of the latch. Accordingly, when a trunnion on the device is in a hinge of the mounting and a pushing force is applied to the pull-ring with a tool to close the device, the natural decrease in the interior angle between the tool and the device can rotate the pull-ring without preventing the latch from holding the device closed. Further, whether the pushing force or a pulling (opening) force is applied to the pull-ring, the direction of application of the force may be adjusted or may naturally change before, during,or after such force application with affecting the ability of the latch to hold the device closed. The tool may, therefore, be either a non-grasping tool (a "hot stick") or one (a "shotgun stick") capable of grasping the pull-ring. In the latter event, when the tool grasps the pull-ring and the trunnion is out of the hinge, the pull-ring is biased to a pivotal orientation whereat the trunnion is presented for convenient insertion into the hinge upon manipulation of the tool.
    • 用于电气设备的拉环,例如可以放置在安装中的高压保险丝。 拉环操作一个闩锁,只能在往复运动时才能将保险丝固定在安装中。 拉环可以独立于其往复运动而枢转,而不影响闩锁的状态。 因此,当装置上的耳轴处于安装的铰链中并且用工具将推力施加到拉环以关闭装置时,工具和装置之间的内角的自然减小可以使 拉环,而不会阻止闩锁将装置关闭。 此外,无论推力还是拉力(打开)力被施加到拉环上,施加力的方向可以被调节,或者可以在这种力施加之前,之中或之后自然地改变,从而影响到 闩锁以将设备保持关闭。 因此,该工具可以是能够抓住拉环的非抓握工具(“热棒”)或一个(“猎枪棒”)。 在后一种情况下,当工具抓住拉环并且耳轴离开铰链时,拉环被偏压到枢转方向,在该枢轴方向上呈现耳轴,以便在操纵工具时方便地插入铰链中。