Invention Application
- Patent Title: Control Valve for a Variable Displacement Pump
- Patent Title (中): 可变排量泵的控制阀
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Application No.: US12406813Application Date: 2009-03-18
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Publication No.: US20100236399A1Publication Date: 2010-09-23
- Inventor: Navneet Gulati
- Applicant: Navneet Gulati
- Main IPC: F01B3/10
- IPC: F01B3/10 ; F04B1/29

Abstract:
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.
Public/Granted literature
- US08647075B2 Control valve for a variable displacement pump Public/Granted day:2014-02-11
Information query
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