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    • 59. 发明授权
    • High amperage switching apparatus with bi-metallic arcing contacts
    • 具有双金属电弧触点的高安培开关装置
    • US3980851A
    • 1976-09-14
    • US493940
    • 1974-08-01
    • Leo G. EvansMichael B. Bykowski
    • Leo G. EvansMichael B. Bykowski
    • H01H33/62H01H1/021H01H1/10H01H33/00H01H33/12
    • H01H1/10H01H1/021H01H33/002
    • In a high amperage switching apparatus comprising multiple, spaced apart, stationary first terminals, each in interruptable circuit communication with corresponding multiple, spaced apart, stationary second terminals, said communication being by movable knife type circuit interrupting means pivotably attached to each second terminal such that it will contact the corresponding first terminal at some point in the pivot arc, the improvement comprising removably and conductively attaching to at least one stationary first terminal, at least one primary sacrificial, bimetallic contact, having highly conductive lower attachment section and highly resistant contact tip and removably and conductively attaching to at least one corresponding movable circuit interrupting means at least one secondary sacrificial bimetallic contact, being comprised of multiple laminate highly conductive metal fingers backed by a spring, compression laminate, having a high resistant metal tip, said primary and secondary sacrificial bimetallic contacts being so attached to said first terminal and interrupting means that under high amperage current, when closing said switch, contact is made between the resistant tips of said primary and secondary sacrificial contacts prior to the initiation of arcing between the first terminal and the movable interrupting means, contact between the sacrificial contacts being maintained throughout the closing of the switch and when opening said switch, contact is maintained between the primary and secondary sacrificial contacts until the interrupting means is so far removed fro the first terminal that arcing therebetween may not occur.
    • 在包括多个间隔开的固定的第一端子的高电流开关装置中,每个都具有与相应的多个间隔开的固定的第二端子的可中断电路通信,所述通信是可移动的刀式电路中断装置,其可枢转地附接到每个第二端子,使得 它将在枢转弧中的某一点处接触对应的第一端子,改进包括可移除地和导电地附接到至少一个固定的第一端子,至少一个主牺牲双金属接触件,具有高导电性的下连接部分和高度抵抗的接触尖端 以及至少一个对应的可移动电路中断装置,可移除地和导电地附接至少一个辅助牺牲双金属触点,所述至少一个辅助牺牲双金属触点包括多个层叠的高导电金属指,所述多个层叠的高导电金属指由弹簧压缩叠层体, 所述第一端子和所述第一端子和所述中断装置相连接,所述第一端子和所述中断装置在高电流强度下闭合所述开关时,在所述第一端子和所述第二端子与所述第二端子之间的电弧放电之前,在所述第一和第二牺牲触点的电阻尖端之间形成接触, 可移动中断装置,在开关闭合期间保持牺牲触点之间的接触,并且当打开所述开关时,在主牺牲触头和辅助牺牲触点之间保持接触,直到中断装置远离第一端子移除,其间的电弧 不发生
    • 60. 发明授权
    • Circuit breaker with automatically adjustable contact pressure
    • 断路器可自动调节接触压力
    • US3974349A
    • 1976-08-10
    • US586764
    • 1975-06-13
    • Karl D. Olafsen
    • Karl D. Olafsen
    • H01H31/24H01H1/50H01H5/04H01H33/34H01H33/62H01H35/38
    • H01H33/34H01H1/50H01H5/04
    • A switch or circuit breaker that provides a high contact pressure when closed and provides a reduced and automatically regulated contact pressure during opening and closing. In one embodiment a pair of contacts is mounted opposite one another and one of the contacts is carried at one end of a pivotably mounted lever so that it can move towards and away from the other by a movement of the other end of the lever. A fluid operated cylinder arrangement is provided to move the switch blade from a first disengaged position to a second engaged position between the blades. The cylinder is mounted on a mechanical linkage so that the linkage is deflected in accordance with the resistance of the blade to movement, and the deflection of the linkage moves the lever tending to decrease contact pressure. A balance is reached between contact pressure and the blade movement tending to maintain a constant and reduced contact pressure during opening and closing.
    • 开关或断路器,在闭合时提供高接触压力,并在开启和关闭期间提供减小且自动调节的接触压力。 在一个实施例中,一对触点彼此相对地安装,并且一个触点被承载在可枢转地安装的杠杆的一端,使得其可以通过杠杆的另一端的运动而朝向另一端移动并远离彼此。 设置流体操作的气缸装置以将开关叶片从第一脱离位置移动到叶片之间的第二接合位置。 气缸安装在机械联动装置上,使得联动装置根据叶片抵抗运动的阻力而偏转,并且联动装置的偏转使杆移动以减小接触压力。 在接触压力和叶片运动之间达到平衡,倾向于在打开和关闭期间保持恒定和降低的接触压力。