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:
Oct. 20, 2020
Filed:
Nov. 19, 2015
Denso Corporation, Kariya, Aichi-pref., JP;
Kazutoshi Kodama, Kariya, JP;
Hirofumi Noda, Kariya, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
A gas sensor is provided which includes a hollow metallic housing, a sensor device installed in the housing, and a seal disposed in the housing to hermetically isolate between the housing and the sensor device. The housing has an inner shoulder formed on an inner periphery thereof. The seal is retained on the inner shoulder. The seal is made up of a powder body and a glass body. The powder body is made of inorganic powder and mounted on the inner shoulder. The glass body is arranged on the powder body and has a varying coefficient of thermal expansion which alleviates a difference in thermal expansion between the sensor device and the housing, thereby ensuring the stability of hermetic sealing ability of the seal in high-temperature environments.