发明授权
- 专利标题: Hydraulic control valve apparatus
- 专利标题(中): 液压控制阀装置
-
申请号: US195398申请日: 1988-05-12
-
公开(公告)号: US4887511A公开(公告)日: 1989-12-19
- 发明人: Tsutomu Sugiyama , Toshiaki Yoshizumi
- 申请人: Tsutomu Sugiyama , Toshiaki Yoshizumi
- 申请人地址: JPX
- 专利权人: Mitsubishi Denki Kabushiki Kaisha
- 当前专利权人: Mitsubishi Denki Kabushiki Kaisha
- 当前专利权人地址: JPX
- 主分类号: H01H33/34
- IPC分类号: H01H33/34
摘要:
A hydraulic operating apparatus for a circuit interrupter comprises a conversion unit for converting input information from the exterior concerning a speed control pattern into an electrical signal for driving a linear or servo motor according to the closing and interrupting commands, the motor drive signal provided from the converting means being transmitted to the motor such that the displacement of the motor causes the hydraulic control valve apparatus to be operated to switch the fluid passages to selectively drive the hydraulic cylinder in different directions, and that the position during the switching of the hydraulic control valve driven by the motor is made different from the final stop position at its interruption or closed state to provide a throttle effect of a throttle in the hydraulic control valve thereby controlling the speed of the hydraulic cylinder. The hydraulic operating apparatus may comprise a conversion unit for converting contact closing and opening commands into an electrical signal for driving a linear or servo motor.
公开/授权文献
- US5582241A Heat exchanging fins with fluid circulation lines therewithin 公开/授权日:1996-12-10