Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Nobuhiro Akashi0
Hiroto Fujii0
Katsumi Mori0
Date of Patent
June 8, 2010
0Patent Application Number
112342900
Date Filed
September 26, 2005
0Patent Primary Examiner
Patent abstract
A spool valve is movably provided in a valve sliding space of a valve casing. The spool valve has a through-hole formed in the inside thereof, and a communication port formed in the spool valve is operatively communicated with a fluid port for controlling an opening area of the fluid port by moving within the valve sliding space. Multiple circular oil grooves are formed at an outer peripheral surface of the spool valve, into which high pressure fluid is supplied so that the spool valve can be smoothly moved in the valve sliding space.
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