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. 10, 1990
Filed:
Dec. 18, 1987
Junichi Kitagawa, Utsunomiya, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A metallic gasket to be interposed between a cylinder block and a cylinder head of an internal combustion engine. On this gasket is provided a embossment which surrounds an opening formed in this gasket along a smooth closed loop, and an inclination angle of an inner circumferential portion of the embossment is selected smaller than an inclination angle of an outer circumferential portion thereof. When the embossment is crushed by a fastening force generated by bolts, a deformation stress in the inner circumferential portion which is normally liable to become large, becomes nearly equal to a deformation stress in the outer circumferential portion, and accordingly, degradation of a sealing property and fatigue rupture caused by excessive deformation of the inner circumferential portion can be prevented.