Self-extinguishing switch
    21.
    发明授权
    Self-extinguishing switch 失效
    自熄开关

    公开(公告)号:US4359616A

    公开(公告)日:1982-11-16

    申请号:US72048

    申请日:1979-09-04

    CPC classification number: H01H33/901

    Abstract: A hollow cylindrical member includes a compression chamber and a reservoir partitioned by a circumferential step disposed on its inner wall surface and filled with an arc-extinguishing fluid. A piston loaded with a spring forms stationary contact and is slidably fitted into the compression chamber while the reservoir is connected to the exterior of the cylindrical member through a flared hole in an electrically insulating nozzle. A movable contact loosely extends through the nozzle to engage separably the piston. The stationary contact may be disposed in the reservoir while the piston serves as an arc contact. The spring may be replaced by a tulip-shaped member on the piston forced into a recess on the free end of the movable contact and leaving it upon the piston engaging the step.

    Abstract translation: 中空圆柱形构件包括压缩室和通过设置在其内壁表面上并填充有灭弧液体的圆周台分隔的储存器。 装有弹簧的活塞形成固定接触件并且可滑动地装配到压缩室中,同时储存器通过电绝缘喷嘴中的喇叭孔连接到圆柱形构件的外部。 活动触头松动地延伸穿过喷嘴以可分离地接合活塞。 固定触点可以设置在储存器中,而活塞用作电弧触点。 弹簧可以由活塞上的凹陷中的郁金香形状的构件代替,并将其留在活塞接合台阶上。

    Switching device
    22.
    发明授权
    Switching device 失效
    开关装置

    公开(公告)号:US4264795A

    公开(公告)日:1981-04-28

    申请号:US21249

    申请日:1979-03-16

    CPC classification number: H01H33/98

    Abstract: An outer arc extinguishing compartment is disposed coaxially with an inner arc extinguishing compartment and partly projects under one end thereof. A movable contact member extends through both compartments and separably engages a stationary contact member located within the inner compartment. A plurality of arc suppressors of spindle-shaped cross section are disposed at equal angular intervals in the projecting portion of the outer compartment adjacent to and about the movable contact member to extend axially and radially of the latter. The circumferential minimum distance between the arc suppressors is smaller than the diameter of a positive column of an electric arc struck across both contact members.

    Abstract translation: 外部消弧室与内部灭弧室同轴设置,并且部分地在其一端突出。 可移动接触构件延伸穿过两个隔室并且可分离地接合位于内隔室内的固定接触构件。 纺锤形横截面的多个电弧抑制器以相等的角度间隔设置在邻近并围绕可动接触件的外隔室的突出部分中,从而沿轴向和径向延伸。 电弧抑制器之间的圆周最小距离小于穿过两个接触构件的电弧的正极柱的直径。

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