Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Tetsuya Ooshiba0
Keita Akashi0
Ryo Kurosawa0
Date of Patent
March 13, 2007
0Patent Application Number
110422380
Date Filed
January 25, 2005
0Patent Primary Examiner
Patent abstract
It is related to the shape of a back surface formed to allow a pre-loading diaphragm to become deformed at a threshold pressure value. A differential pressure measuring apparatus has the pre-loading diaphragm which becomes deformed to prevent sensors from being broken when pressure higher than a threshold pressure value is applied, wherein only convex parts of the pre-loading diaphragm are in close contact with convex parts of the back surface of a body respectively.
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