The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 18, 2005
Filed:
May. 14, 2004
Kentaro Mizuno, Nisshin, JP;
Kouji Tsukada, Seto, JP;
Yoshiteru Omura, Seto, JP;
Shoji Hashimoto, Seto, JP;
Jiro Sakata, Nagoya, JP;
Kentaro Mizuno, Nisshin, JP;
Kouji Tsukada, Seto, JP;
Yoshiteru Omura, Seto, JP;
Shoji Hashimoto, Seto, JP;
Jiro Sakata, Nagoya, JP;
Kabushiki Kaisha Toyota Chuo Kenkyusho, Nagakute-cho, JP;
Abstract
A pressure sensor is realized wherein output error of sensor element can be reduced even in the case where the pressure sensor is utilized in high temperature conditions. A pressure sensor is provided with a housing, a diaphragmthat partitions the interior and the exterior of the housing, a sensor elementprovided within the housing, output value of the sensor elementvarying in accordance with force exerted thereupon, and a force transmitting rodprovided within the housing, the force transmitting rodmoving downwardly when a pressure is exerted upon the diaphragm, the force transmitting rodthereby exerting force upon the sensor element. The diaphragmhas a central regioncontacting with the force transmitting rod, and a surrounding regionsurrounding the periphery of the central regionand connecting the central regionwith the housing. The surrounding region, viewed cross-sectionally along the radius, is V-shaped or U-shaped, and cancels thermal expansion.