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:
Nov. 05, 2019
Filed:
Jul. 16, 2018
Ishikawa Gasket Co., Ltd., Tokyo, JP;
Mitsubishi Jidosha Kogyo Kabushiki Kaisha, Tokyo, JP;
Kisho Yasuda, Tokyo, JP;
Akira Yoshihara, Tokyo, JP;
Hiroki Imada, Tokyo, JP;
Masayuki Yano, Tokyo, JP;
Kunitoshi Kajiwara, Tokyo, JP;
ISHIKAWA GASKET CO., LTD., Tokyo, JP;
Mitsubishi Jidosha Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A gasket capable of surely preventing leakage of a fluid, without deteriorating a sealing performance even when a situation of fall of surface pressure at a periphery edge of a through hole occurs is provided. There are formed a primary seal structurelying on an inner side in the radial direction of a periphery edge endand a secondary seal structurelying on an outer side in the radial direction of the periphery edge endin which the primary seal structureincludes a primary upper layer beadformed to an upper layera primary intermediate layer beadformed to a second plate materialof an intermediate layerand a primary lower layer beadformed to a lower layerstacked in an x direction, and the secondary seal structureincludes a secondary upper layer beadformed to the upper layeran secondary intermediate layer beadformed to the second plate materialof the intermediate layerand a secondary lower layer beadformed to the lower layerstacked in the x direction.