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:
Apr. 24, 2001
Filed:
Nov. 26, 1991
Shigeru Kawaguchi, Osaka, JP;
Kenji Kubouchi, Osaka, JP;
Tadaumi Matsumoto, Osaka, JP;
Jin Hashioka, Aichi-ken, JP;
Takeshi Kitamura, Aichi-ken, JP;
Other;
Abstract
A laminate-type metallic gasket comprising adjacent combustion chamber holes (A, A), a pair of bead substrates (,) made of an elastic metallic plate with a bead (,) formed along each of the combustion chamber holes (A, A) and first and second intermediate plates (,), in which peak portions of beads (,) are symmetrically opposite to each other, disposed between the two bead substrates (,) according to the present invention wherein a first intermediate plate (,) is provided with a step (,) having a thickness less than that of a second intermediate (,) formed along an edge portion (,) of the combustion chamber holes (A, A). The intermediate plate (,) is disposed upon an outer surface which is made of a downwardly convex surface (,) by a formation of the step (,), and an edge portion (,) of the second intermediate plate (,) being folded back between the second intermediate plate (,) and the edge portion (,) of the combustion chamber holes (A, A) of the first intermediate plate (,) to form the compensating portion (,) having a thickness larger than the total thickness of the two intermediate plates (,) at a portion, where peak portions of the beads (,) are respectively brought into contact with the first and second intermediate plates (,), around the combustion chamber holes (A, A).