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:
Jan. 11, 1994
Filed:
May. 26, 1992
Katsushiro Ishikawa, deceased, Tokyo, JP;
Itsuo Ishikawa, Tokyo, JP;
Ishikawa Gasket Co., Ltd., Tokyo, JP;
Abstract
The metal laminate gasket of the invention is used for an internal combustion engine having a hole to be sealed. The gasket is formed of a plurality of metal plates for constituting the metal laminate gasket, and a device for defining the hole of the engine with a curved portion and a flange. Inside the curved portion around the hole, a wire ring, at least one bead and a hollow ring are situated. The hollow ring is arranged between the curved portion and the bead. The thickness of a metal plate for the hollow ring is adjusted so that the surface pressures on the wire ring and the bead are regulated by the hollow ring when the gasket is tightened.