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:
Feb. 22, 2022
Filed:
Jan. 22, 2020
Ngk Spark Plug Co., Ltd., Nagoya, JP;
Kouji Ogawa, Nagoya, JP;
Ayaka Ota, Nagoya, JP;
Hideya Inukai, Nagoya, JP;
Yasuhiro Ishiguro, Nagoya, JP;
NGK SPARK PLUG CO., LTD., Aichi, JP;
Abstract
A sensor including a sensor element, a metallic shell, a terminal fitting, a cylindrical case, lead wires, a connector portion, and a cylindrical heat shield tube. The heat shield tube includes a first tube and a second tube. The second tube is disposed on a distal end side of the first tube and covers an outer surface of the rear end side of the case, while providing an overlapping portion that overlaps the first tube. A rear end side of the first tube is adjacent to the connector portion. A total length T of the heat shield tube and a length S of the overlapping portion satisfy T/10≤S≤T/5. Further, a length Lof the first tube and a length Lof the second tube satisfy T/2≤L<L