Is a
Patent attributes
Patent Applicant
0
Patent Jurisdiction
Patent Number
Patent Inventor Names
Shigeru Ozawa0
Tetsuhiko Hara0
Date of Patent
April 19, 2005
0Patent Application Number
106608820
Date Filed
September 12, 2003
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A valve device having a novel vale seat plate is provided. The valve seat plate has an inlet opening, an outlet opening, a front side and a back side. A sealing case covers the front side and inlet and outlet pipes are attached to the back side to communicate respectively with the inlet and outlet openings. A valve element moves to cover the outlet opening on the front side to close the outlet opening. The novel valve seat plate includes at least two plates that are joined to each other. One plate forms the area around the outlet opening and the other plate forms other areas of the valve seat plate.
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