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1. 发明授权

US3980851A High amperage switching apparatus with bi-metallic arcing contacts 失效
标题翻译：具有双金属电弧触点的高安培开关装置
公开(公告)号：US3980851A
公开(公告)日：1976-09-14
申请号：US493940
申请日：1974-08-01
申请人： Leo G. Evans , Michael B. Bykowski
发明人： Leo G. Evans , Michael B. Bykowski
IPC分类号： H01H33/62 , H01H1/021 , H01H1/10 , H01H33/00 , H01H33/12
CPC分类号： H01H1/10 , H01H1/021 , H01H33/002
摘要： 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.
摘要翻译：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

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