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11 条记录 (耗时 0.026 秒)

    Air shut-off torque responsive control valve unit for pneumatically powered tools
    8.
    发明授权
    Air shut-off torque responsive control valve unit for pneumatically powered tools 失效
    用于气动工具的空气关断扭矩控制阀组

    公开(公告)号：US3667345A

    公开(公告)日：1972-06-06

    申请号：US3667345D

    申请日：1970-08-19

    申请人： CHICAGO PNEUMATIC TOOL CO

    发明人： SCHAEDLER RAYMOND J ,  AMTSBERG LESTER A

    IPC分类号： B25B23/145 ,  B23B45/04

    CPC分类号： B25B23/145

    摘要： A completely assembled air shut-off control valve unit illustrated as fitted in a bore of a pneumatically powered nut runner in the path of air flow between the throttle valve and the motor. The unit is of capsule form defined by means of a shell in which the various components are confined. A cap closes over an open end of the shell through which end the various components may be withdrawn. The valve is of a piston and rod form having a spring load in association with an adjusting screw and travel nut means for adjusting the load of the spring upon the valve. Structural design of the valve, together with a valve guide serve to effect pneumatic balancing of the valve and consequent reduced friction in its movement.

    摘要翻译： 完全组装好的空气关闭控制阀单元，其被示出为安装在节气门和电动机之间的气流路径中的气动螺母扳手的孔中。 该单元是通过壳体限定的胶囊形式，其中各种部件被限制在其中。 盖子在外壳的开口端封闭，各个部件可以通过该盖子取出。 该阀具有与调节螺钉相关联的弹簧载荷和用于调节阀上的弹簧的负载的行进螺母装置的活塞和杆形式。 阀的结构设计以及阀导向器用于实现阀的气动平衡，从而减少其运动中的摩擦。

    Air feed nut runner having a travelling gear case
    9.
    发明授权
    Air feed nut runner having a travelling gear case 失效
    具有行驶齿轮箱的空气进料泵

    公开(公告)号：US3576217A

    公开(公告)日：1971-04-27

    申请号：US3576217D

    申请日：1969-03-04

    申请人： CHICAGO PNEUMATIC TOOL CO

    发明人： SCHAEDLER RAYMOND J

    IPC分类号： B25B21/00 ,  B25B23/00

    CPC分类号： B25B21/00

    摘要： A nut-running tool having a work spindle arranged in a supporting base so as to be advanced by a pneumatically powered piston into engagement with a threaded fastener. As the spindle advances, it is also rotated so as to drive the fastener into the work by means of an air-driven motor acting through a travelling gear train structure. A check cylinder is automatically operable at a predetermined time during the advance of the spindle so as to dampen the advancing speed of the spindle and thereby prevent the latter from ramming into the fastener. A spring-cushioned pin and slot connection between the gear train structure and the spindle permits the gear train structure to advance briefly relative to the spindle when the latter seats upon the fastener. This relative movement stops prior to the time that the fastener is driven into the work. A limit switch is arranged to automatically signal a control circuit when the spindle has completed its advance stroke. The time of operation of the switch may be adjusted. The control circuit responds to the signal to shut off air feed to the piston and motor. A spring responds to the latter action to retract the piston to its normal start position. A second limit switch is arranged to automatically signal the control circuit when the spindle has completed its retract stroke. The control circuit responds to the latter signal to recondition the circuit for the next cycle of operation.