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:
May. 12, 2015
Filed:
Jul. 23, 2009
Shuji Yoshitsune, Aso, JP;
Masaru Ito, Makinohara, JP;
Tomoyuki Koyama, Makinohara, JP;
Seiji Tani, Tokyo, JP;
Shuji Yoshitsune, Aso, JP;
Masaru Ito, Makinohara, JP;
Tomoyuki Koyama, Makinohara, JP;
Seiji Tani, Tokyo, JP;
Nok Corporation, Tokyo, JP;
Mahle Filter Systems Japan Corporation, Tokyo, JP;
Abstract
A gasket is provided which is intended to improve its sealing performance by attaining a further stabilization of the posture thereof in a groove. In a gasket () in which a protruded part (), which serves to stabilize the posture of the gasket () in a groove () by being in contact with an inner wall surface of the groove () in a state where the gasket is sandwiched by a head cover () and a cylinder head, is continuously formed in a longitudinal direction of the gasket (), the protruded part () is characterized by a stepped structure which includes a first protruded portion () with the largest amount of protrusion that is formed along the vicinity of a center of a gasket main body, a second protruded portion () with the smallest amount of protrusion that is formed at the side of the head cover (), and a third protruded portion () that is formed at the side of the cylinder head, and has an amount of protrusion which is smaller than that of the first protruded portion (), and larger than that of the second protruded portion ().