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:
Feb. 01, 2000
Filed:
May. 21, 1998
Yoshio Miyaoh, Tokyo, JP;
Ishikawa Gasket Co., Ltd., Tokyo, JP;
Abstract
A metal laminate gasket of the invention is used for an internal combustion engine having a sealing hole and a plurality of bolt holes situated around the sealing hole. The gasket is formed of first and second metal plates having holes corresponding to the sealing hole and the bolt holes of the engine. The second metal plate includes a base portion, a curved portion extending from the base portion to define one hole therein and located inside one hole in the first plate, and a flange extending from the curved portion and disposed over the first plate. The flange has a plurality of wide flange portions and narrow flange portions alternately arranged to each other such that the wide flange portions are located near the bolt holes to support high tightening pressures applied thereto. A bead may be formed on one or both of the first and second plates outside the flange. The bead may have wide and narrow portions to provide equal surface pressures as a whole.