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. 15, 2019
Filed:
Jul. 18, 2018
Ishikawa Gasket Co., Ltd., Tokyo, JP;
Kisho Yasuda, Tokyo, JP;
ISHIKAWA GASKET CO., LTD., Tokyo, JP;
Abstract
A gasket includes a plurality of metal plates laminated together, and having a plurality of through holes situated adjacent to each other, and seal structures each annularly surrounding each of the through holes. Each of the seal structures includes a first seal bead adjacent to one through hole and a second seal bead situated outside the first seal bead relative to the one through hole, a first seal portion located in a first area between adjacent two through holes, and a second seal portion located in a second area other than the first area. The first seal portion has an annular width narrowing as outside ends of the first seal portion come close to a center of the first seal portion by locating the second seal bead close to the first seal bead, and the second seal portion has an annular width constant in an annular circumferential direction.