Anti-rotation device for cable stringing

    公开(公告)号:US11979007B2

    公开(公告)日:2024-05-07

    申请号:US17127662

    申请日:2020-12-18

    IPC分类号: H02G1/02 H02G1/04 H02G7/18

    CPC分类号: H02G1/02 H02G1/04 H02G7/18

    摘要: An anti-rotation device is provided for stringing a cable or wire while reducing a twisting moment of the cable or wire as it is strung. The device includes a tow component, having multiple tow sections pivotally connectable end-to-end. A plurality of insulated weighted tail components are suspended so as to hang from the tow component. Each of the insulated tail components include weighted tail sections releasably connectable end-to-end to one another. At least one electrically insulated tail section is provided in each insulated tail component between the tow component and the weighted tail sections. The tail components are constrained to only articulate relative to the tow component in the single plane of bending of the tow component.

    Spring loaded ground clamp
    4.
    发明授权

    公开(公告)号:US11817665B2

    公开(公告)日:2023-11-14

    申请号:US17586456

    申请日:2022-01-27

    IPC分类号: H01R4/66 H01R4/64 H01R4/48

    CPC分类号: H01R4/66 H01R4/4863 H01R4/646

    摘要: A grounding clamp uses a spring driving a piston mounted movable jaw as a safety lockout. The movable jaw and a fixed jaw, which may include teeth, form a conductor clamp. The ground clamp mounts on the end of a hot stick to provide for electrically insulated remote operation of the ground clamp by a lineman holding the hot stick and pulling on, or releasing, a lever arm on the hot stick. The system provides increased safety for the lineman as the spring providing the spring loading of the clamp has a high spring force to overcome, thus providing the lockout. The lever arm on the hot stick tool provides mechanical advantage to overcome the spring force and thus release the lockout. The lineman cannot usefully operate the ground clamp manually without the hot stick due to spring force lockout.