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:
Jul. 06, 2010
Filed:
Sep. 05, 2008
Yoshikazu Kaneko, Tokyo, JP;
Hiroshi Kodama, Tokyo, JP;
Hiroshi Wakabayashi, Tokyo, JP;
Nagano Keiki Co., Ltd., Tokyo, JP;
Abstract
A manufacturing method of a pressure sensor that includes a pressure detector having a bottomed cylindrical member with a bottom including a thin-wall portion and a strain detecting mechanism provided on one side of the bottom for detecting a strain of the bottom and a pressure-introducing joint for introducing the fluid to be measured into the bottomed cylindrical member is provided. The method includes: first welding for butt-welding an end of the cylindrical portion of the bottomed cylindrical member and an end of the pressure-introducing joint; and second welding for welding the pressure-introducing joint in parallel to a first weld bead formed by the first welding.