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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.:

US 10458328 B1

PDFFull Text
Date of Patent:
Oct. 29, 2019

Filed:

Mar. 25, 2015

Welded combustion pressure sensor and method of manufacturing same

Applicants:

Citizen Finedevice Co., Ltd., Minamitsuru-gun, Yamanashi, JP;

Citizen Holdings Co., Ltd., Nishitokyo-shi, Tokyo, JP;

Inventors:

Kazuo Takahashi, Yamanashi, JP;

Yoshihiko Soga, Yamanashi, JP;

Assignees:

CITIZEN FINEDEVICE CO., LTD., Minamitsuru-Gunm Yamanashi, JP;

CITIZEN WATCH CO., LTD., Nishitokyo-Shi, Tokyo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Justin Seo

Assistant Examiner:

David L Singer

Int. Cl.
CPC ...
F02B 77/08 (2006.01); G01L 23/10 (2006.01); G10L 19/06 (2013.01); B23K 26/24 (2014.01); G01L 9/08 (2006.01); G01L 19/14 (2006.01); G01M 15/08 (2006.01); G01L 19/06 (2006.01);
U.S. Cl.
CPC ...
F02B 77/085 (2013.01); B23K 26/24 (2013.01); G01L 9/08 (2013.01); G01L 19/0645 (2013.01); G01L 19/142 (2013.01); G01L 23/10 (2013.01); G01M 15/08 (2013.01);
Abstract

A combustion pressure sensor has a case member with a joint surface on the side of a tip end and in which an opening portion is provided. A joint surface of a pressure reception member on which a combustion pressure acts is brought into planar contact with the joint surface of the case member so as to block the opening portion. A welding portion joins the joint surfaces to each other. A piezoelectric element stored in the case member converts a pressing force based on the combustion pressure transmitted from the pressure reception member into a signal. On the side of one edge side in at least the one joint surface, the one joint surface is limited to a given depth of welding from the other edge side. A predetermined clearance portion is provided so as to form a predetermined gap with the opposite joint surface and a welding portion is provided which includes at least all the limited joint surface from the other edge side in the one joint surface.

Find Patent Forward Citations

Takahashi, Kazuo. (2019). Welded combustion pressure sensor and method of manufacturing same (U.S. Patent No. 10458328). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10458328

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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