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. 23, 1999
Filed:
Sep. 23, 1997
Yoshio Miyaoh, Tokyo, JP;
Ishikawa Gasket Co., Ltd., Tokyo, JP;
Abstract
A metal gasket of the invention is used for a cylinder head gasket or a pipe connecting gasket. The gasket is basically formed of a single metal plate having a base portion extending substantially throughout an entire area to be sealed, and includes a bead protecting portion extending outwardly from the front surface and a sealing bead adjacent to the bead protecting portion. The bead protecting portion and the sealing bead are formed in the metal plate. The bead protecting portion has no substantial compressibility, but the sealing bead has a compressibility. Thus, when the metal plate is compressed, the bead protecting portion provides a surface pressure without substantial resiliency, and the sealing bead provides a surface pressure with resiliency and is protected from being completely compressed by the bead protecting portion. The gasket can be made thin.