Monitor boom incorporating twin-jet nozzle apparatus
    1.
    发明授权
    Monitor boom incorporating twin-jet nozzle apparatus 失效
    监视器加入双喷嘴装置

    公开(公告)号:US3604627A

    公开(公告)日:1971-09-14

    申请号:US3604627D

    申请日:1970-02-24

    CPC classification number: E21C25/60 A62C31/24

    Abstract: A remotely controlled twin-jet monitor apparatus is mounted on the end of an articulated water-conducting boom or arm, and is so constructed that the two jets emanating therefrom never create any resultant torque about the vertical axis through the mast for the boom. Accordingly, the boom may be made extremely large yet light in weight, and may be manipulated by small and low-power motor means. Means are provided to effect simultaneous rotation of both jets, and to change the angles of the jets relative to a predetermined plane, but without creating the indicated resultant torque.

    Power-operated and manually operated swivel joint
    2.
    发明授权
    Power-operated and manually operated swivel joint 失效
    动力操作和手动操作的旋转接头

    公开(公告)号:US3575060A

    公开(公告)日:1971-04-13

    申请号:US3575060D

    申请日:1970-04-09

    CPC classification number: F16L27/0828 F16H57/0498 F16L27/0808 Y10T74/19828

    Abstract: A low-friction swivel joint has incorporated therein a worm wheel, the latter being rotated by a worm driven by a fluid motor. A second and corresponding swivel joint is also provided, being driven by fluid which is passed through the first-mentioned joint in order that there will be not twisting of pipes or conduits. The passage of fluid through the first-mentioned joint is effected by transfer rings and associated grooves and passages.

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