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    • 10. 发明授权
    • Contact assembly
    • 接触组件
    • US07148774B1
    • 2006-12-12
    • US11178839
    • 2005-07-11
    • John J. SheaJeffrey A. Miller
    • John J. SheaJeffrey A. Miller
    • H01H83/00
    • H01H1/22H01H11/06H01H73/04
    • A circuit breaker contact assembly includes a line conductor having a folded back fixed contact end, a fixed contact mounted on the contact end, and a movable contact arm having an inner edge and first and second ends. A movable contact is mounted on the first end. The movable contact arm is pivotable about the second end between a closed position in which the inner edge extends adjacent the contact end with the movable contact in contact with the fixed contact to form a reverse current loop, and an open position in which the movable contact is pivoted away from the fixed contact. The contact arm includes a first inner longitudinal member extending along the inner edge and a second outer longitudinal member. The first inner longitudinal member has a higher electrical conductivity than the second outer longitudinal member, which has a higher shear strength and a lower specific density.
    • 断路器触头组件包括具有折回的固定接触端的线路导体,安装在接触端上的固定触点以及具有内边缘和第一端和第二端的可动触头臂。 可移动触点安装在第一端。 所述可动接触臂可围绕所述第二端枢转,所述闭合位置中,所述内边缘与所述接触端相邻延伸,所述可动触头与所述固定触头相接触,以形成反向电流回路;以及打开位置, 枢转远离固定触点。 接触臂包括沿着内边缘延伸的第一内部纵向构件和第二外部纵向构件。 第一内部纵向构件具有比第二外部纵向构件更高的导电性,其具有较高的剪切强度和较低的比重。