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:
Dec. 22, 2020
Filed:
Apr. 06, 2018
Denso Corporation, Kariya, JP;
Yoshitaka Sato, Kariya, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
An ignition coil for an internal combustion engine includes a primary coil, a secondary coil, a case, and a joint. The primary and secondary coils are magnetically coupled with each other. The case includes a case body in which the primary and secondary coils are disposed and a cylindrical high-voltage tower which protrudes from a case bottom wall of the case body. The joint is fit on the high-voltage tower and a spark plug. The joint is of a cylindrical shape. A communicating void is formed between the high-voltage tower and the joint to communicate between an inner space of the high-voltage tower and the joint and an outer space disposed outside the high-voltage tower and the joint, thereby facilitating attachment or removal of the joint to or from the spark plug.