发明名称 Fluid pressure operating apparatus for circuit breaker
摘要 A fluid pressure operating apparatus, comprising: a fluid pressure cylinder for opening and/or closing a contact; control valves for use of open operation and/or closed-circuit, for bringing the fluid pressure cylinders into an opened-circuit operation and a closed-circuit operation; and solenoids, each being provided in each of those control valves. Each of those solenoids has a plunger therein. An operation initiating time of the control valves for use of open (operation) differs from that of the control valves for use of close (operation), when operating to open circuit and when operating to close circuit.
申请公布号 US6903295(B2) 申请公布日期 2005.06.07
申请号 US20030721324 申请日期 2003.11.26
申请人 HITACHI, LTD. 发明人 SETO SHINJI;TAKAMOTO MANABU
分类号 F15B1/02;H01H33/30;H01H33/40;(IPC1-7):H01H35/38 主分类号 F15B1/02
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