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. 10, 1992
Filed:
Jun. 25, 1991
Nippon Leakless Industry Co., Ltd., Tokyo, JP;
Abstract
A metal gasket includes plural functional layers formed with embossments along peripheral edges of cylinder openings thereof and a backup plate not formed with any embossment and sandwiched between the functional layers. At least one edge plate is provided which is spaced radially within and is coplanar with peripheral edges of cylinder openings of the backup plate. The edge plate is different in thickness from, generally thinner than, the backup plate. Grommets are provided to fasten together the edge plate and portions of the functional layers overlapping the edge plate. With this arrangement, by selecting thicknesses of the edge plate and the backup plate so as to be different between them by a requisite value, surface pressure at peripheral edges of cylinder openings of the metal gasket can be set a desired value. Therefore, this metal gasket is superior in sealing performance and uniformity.