发明授权
- 专利标题: Pilot valve
- 专利标题(中): 先导阀
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申请号: US195214申请日: 1998-11-18
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公开(公告)号: US6125886A公开(公告)日: 2000-10-03
- 发明人: Toyoaki Sagawa , Koji Sakashita , Yoshio Togashi , Kazuto Fujiyama
- 申请人: Toyoaki Sagawa , Koji Sakashita , Yoshio Togashi , Kazuto Fujiyama
- 申请人地址: JPX Kobe
- 专利权人: Kawasaki Jukogyo Kabushiki Kaisha
- 当前专利权人: Kawasaki Jukogyo Kabushiki Kaisha
- 当前专利权人地址: JPX Kobe
- 主分类号: F15B13/042
- IPC分类号: F15B13/042 ; F16K11/16 ; F15B13/02 ; F16K31/48
摘要:
In order to obtain great damper effects with a comparatively simple structure and fully control a hunting phenomenon, a pilot valve comprises push rods attached to a valve body, spools attached to spools holes of the valve body, spring bearing members provided in spring chambers of the valve body, first spring members provided between the valve body and the spring bearing members, second spring members provided between the spring bearing members and the spools, and an operation level for pressing the push rods. A fluid chamber is provided on an outside of one of ends of each of the spool holes. The fluid chamber communicates with a drain passage through a throttle passage having a throttle portion.
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