Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Kazuki Ishikawa0
Yoji Nakajima0
Takashi Yoshida0
Katsumi Sahoda0
Kouji Miyano0
Date of Patent
January 2, 2007
0Patent Application Number
107258640
Date Filed
December 1, 2003
0Patent Primary Examiner
Patent abstract
A back pressure chamber is defined at an end of a rod for acting in a direction to cancel out a pressure applied to a valve head, and an aspirator chamber is defined closely to the valve head for developing a pressure lower than a secondary pressure due to a suction caused by a nozzle. The rod has a first communication hole and a second communication hole that are defined therein which provides fluid communication between the back pressure chamber and the aspirator chamber.
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