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. 22, 2019
Filed:
Dec. 10, 2014
Nok Corporation, Tokyo, JP;
NOK Corporation, , JP;
Abstract
The invention provides a cylinder head gasket installed by being sandwiched between a cylinder block and a cylinder head of an internal combustion engine. The cylinder head gasket has bore holes each having a circular plane at positions which are lapped over a combustion chamber in said cylinder block, and surface pressure generation portions constructed by three-dimensional shapes surrounding said bore holes at positions which are lapped over partition walls between the combustion chamber in said cylinder block and a water jacket portion. The surface pressure generation portions are arranged at fixed positions in a thickness direction of said partition wall and are arranged closer to the combustion chamber side or the water jacket portion side than the fixed positions in the thickness direction of said partition wall partly on a circumference around the bore holes. Therefore, bore deformation can be reduced.