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    Mounting means for electrical switch blade and for fuse blade terminal
    28.
    发明授权
    Mounting means for electrical switch blade and for fuse blade terminal 失效
    电气开关刀片和保险丝刀架的安装方式

    公开(公告)号：US3705374A

    公开(公告)日：1972-12-05

    申请号：US3705374D

    申请日：1971-11-17

    Applicant: SQUARE D CO

    Inventor： STANBACK HARRIS I

    IPC: H01H1/42 ,  H01H85/20 ,  H01H3/00

    CPC classification number: H01H1/42 ,  H01H85/204

    Abstract: An elongated generally U-shaped mounting member is disposed within a pair of substantially longitudinally aligned U-shaped spring members, and a generally L-shaped mounting member coextensive in length with the U-shaped mounting member has one leg dividing the space between the legs of the U-shaped mounting member and its other leg secured to the bight portion of the Ushaped mounting member. An end portion of a switch blade is disposed within the U-shaped mounting member adjacent one end thereof and on one side of the dividing leg of the L-shaped mounting member. A pivot pin for the switch blade has a shank portion received in bearing relationship in aligned openings provided respectively in one leg of the U-shaped mounting member, in the end portion of the switch blade, and in the dividing leg of the L-shaped mounting member. An enlarged head portion of the pin extends with clearance through an opening in the other leg of the U-shaped mounting member. A leg portion of one of the spring members engages an outer face of the head portion and presses an annular inner face thereof into engagement with the other side of the dividing leg. A blade terminal of a cartridge fuse is disposable within the U-shaped mounting member adjacent the other end thereof and on the other side of the dividing leg.

    Insulating base, plug-on bus bar and connector assembly for circuit breaker panelboard
    29.
    发明授权
    Insulating base, plug-on bus bar and connector assembly for circuit breaker panelboard 失效
    绝缘座，插拔式母线和连接器组件，用于断路器面板

    公开(公告)号：US3694701A

    公开(公告)日：1972-09-26

    申请号：US3694701D

    申请日：1971-06-09

    Applicant: SQUARE D CO

    Inventor： STANBACK HARRIS I

    IPC: H02B1/056 ,  H01R9/16

    CPC classification number: H02B1/056

    Abstract: Each of a plurality of integral plug-on bus bar and connector body members is secured to an insulating base of a circuit breaker panelboard or load center by inserting a bus bar portion of the member through a barrier portion of the base and straightening an up-turned tang on the bus bar portion to dispose the tang in interlocking relationship with another portion of the base.

    Abstract translation: 多个集成插入式母线和连接器主体部件中的每一个通过将该部件的汇流条部分插入基座的阻挡部分而固定到断路器面板或负载中心的绝缘基座上， 在母线部分上转动柄脚，以与底座的另一部分互锁关系设置柄脚。

    Differential ground fault protection system
    30.
    发明授权
    Differential ground fault protection system 失效
    差分接地故障保护系统

    公开(公告)号：US3663865A

    公开(公告)日：1972-05-16

    申请号：US3663865D

    申请日：1970-07-14

    Applicant: SQUARE D CO

    Inventor： STANBACK HARRIS I

    IPC: H02H3/33 ,  H02H3/28

    CPC classification number: H02H3/331

    Abstract: A ground fault protection system using a differential current transformer. So that an inadvertent low impedance ground of the grounded neutral conductor on the load side of a differential transformer will cause a tripping potential to be developed across the secondary winding of the differential transformer, a resistor is connected across the load conductors at the transformer.

    Abstract translation: 使用差动电流互感器的接地故障保护系统。 因此，差分变压器负载侧的接地中性导体的无意的低阻抗地线将导致在差动变压器的次级绕组之间产生跳闸电位，电阻器连接在变压器的负载导体之间。

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