发明授权
- 专利标题: Control valve for a variable displacement pump
- 专利标题(中): 变排量泵的控制阀
-
申请号: US12406813申请日: 2009-03-18
-
公开(公告)号: US08647075B2公开(公告)日: 2014-02-11
- 发明人: Navneet Gulati
- 申请人: Navneet Gulati
- 申请人地址: US OH Cleveland
- 专利权人: Eaton Corporation
- 当前专利权人: Eaton Corporation
- 当前专利权人地址: US OH Cleveland
- 代理机构: Merchant & Gould P.C.
- 主分类号: F04B1/26
- IPC分类号: F04B1/26
摘要:
A fluid device includes a variable swashplate adapted for movement between a first position and a second position. A control piston is adapted to selectively move the variable swashplate between the first and second positions. A control valve is in fluid communication with the control piston. The control valve includes a sleeve defining a spool bore, at least one fluid inlet passage in fluid communication with a fluid source and at least one control passage in fluid communication with the control piston. The control fluid passage includes an opening at the spool bore. A spool is disposed in the spool bore of the sleeve. The spool includes a metering surface that selectively communicates fluid between the fluid inlet passage and the control fluid passage. The metering surface has a first end and a second end. The metering surface having a tapered surface disposed between the first and second ends.
公开/授权文献
- US20100236399A1 Control Valve for a Variable Displacement Pump 公开/授权日:2010-09-23
信息查询