Metallic gasket for use in an internal combustion engine
US4915398A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 18, 1987 |
| Grant date | Apr 10, 1990 |
| Priority date | — |
| Expiry date | Dec 18, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J2015/085
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.