发明授权
- 专利标题: Hydraulic pressure control device
- 专利标题(中): 液压控制装置
-
申请号: US136669申请日: 1998-08-19
-
公开(公告)号: US6158462A公开(公告)日: 2000-12-12
- 发明人: Masao Kashiwagi , Masayuki Nakamura
- 申请人: Masao Kashiwagi , Masayuki Nakamura
- 申请人地址: JPX
- 专利权人: Kayaba Industry Co., Ltd.
- 当前专利权人: Kayaba Industry Co., Ltd.
- 当前专利权人地址: JPX
- 优先权: JPX9-244549 19970826
- 主分类号: F15B11/00
- IPC分类号: F15B11/00 ; E02F9/22 ; F04B49/08 ; F15B11/05 ; F16K11/07 ; F15B11/042
摘要:
The present invention is directed to a hydraulic pressure control device which can overcome problems, such as a shock to an actuator or a pressure boost phenomenon involving a rapid increase in pump delivery pressure, conventionally encountered when a directional control valve is switched. The hydraulic pressure control device is constructed such that first and second connecting ports are connected to a tank when a directional control valve is in its neutral position, one of the first and second connecting ports is cut off from the tank and connected to an actuator and the other is cut off from the tank and closed when the directional control valve has been switched, in accordance with a position to which the directional control valve has been switched, and a maximum pilot pressure selectively taken from between a pressure compensating valve and a pair of check valves is introduced into a pilot line.
公开/授权文献
- US5464300A Medical instrument and coupling apparatus for same 公开/授权日:1995-11-07
信息查询