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:
Oct. 06, 2009
Filed:
Jan. 04, 2008
Kishou Yasuda, Tokyo, JP;
Kishou Yasuda, Tokyo, JP;
Ishikawa Gasket Co., Ltd., Tokyo, JP;
Abstract
A metal laminate cylinder head gasket includes first and second metal plates laminated together. The first metal plate has a combustion hole, and an asymmetrical bead formed around the combustion hole. The asymmetrical bead has a large radius portion with a width (a) at a side of the combustion hole from a top of the bead, a small radius portion with a width (b) at the other side from the top of the bead, and a smallest radius (R). The second metal plate is laminated at a projecting side of the asymmetrical bead. A relationship between (a) and (b) is (a)>(b), the smallest radius (R) is (R)≧0.5 mm, and a relationship between the width (a) and the radius (R) is (a)≧2(R).