Cylinder-head gasket for internal-combustion engine
US4856796A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 30, 1988 |
| Grant date | Aug 15, 1989 |
| Priority date | — |
| Expiry date | Sep 30, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02F2001/104
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A cylinder-head gasket comprises a metal core plate having two faces and formed with a plurality of cylinder holes, an annular groove of a predetermined depth around each cylinder hole on one of the plate faces, a plurality of stud holes, and a plurality of lubricant/coolant holes. This plate is normally made of stainless steel, a specialty steel, or a steel with a special surface treatment or coating. A resilient seal normally made of a fluorocarbon or silicone is provided on each of the core-plate faces around the lubricant/coolant holes. A cylinder plate of a thickness greater than the groove depth forms respective cylinder rings of the plate thickness sitting in the grooves around each of the cylinder holes. This cylinder plate is normally of a stainless or specialty steel also.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.