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:
Mar. 11, 2025
Filed:
Aug. 29, 2022
Niterra Co., Ltd., Nagoya, JP;
Yuki Yoshida, Nagoya, JP;
Naoki Nishio, Nagoya, JP;
Niterra Co., Ltd., Nagoya, JP;
Abstract
A spark plug which can increase the reactive force of a shelf part. The spark plug includes a cylindrical metal shell provided around an outer periphery of an insulator. The metal shell includes, on an inner periphery of the metal shell, a proximally oriented surface in contact with the insulator, a distally oriented surface located on the distal side relative to the proximally oriented surface, a first surface extending from the distally oriented surface toward the distal side; and a second surface extending from the proximally oriented surface toward the proximal side. In a section containing an axial line, angle A formed between the distally oriented surface and the first surface and angle B formed between the proximally oriented surface and the second surface have a relationship A≤1.15B, with angle A being greater than or equal to 90° and angle B being greater than or equal to 90°.