Valve lifter
US5239951A · kind A · utility
25Cited by
17References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 12, 1992 |
| Grant date | Aug 31, 1993 |
| Priority date | — |
| Expiry date | Nov 12, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2107
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A valve lifter of the roller type formed of a lightweight metal preferably aluminum or magnesium alloy. A roller formed of a wear resistant ceramic material is rotatably secured to the valve lifter. The wear/bearing surfaces of the valve lifter are impregnated with a solid film lubricant to provide reduced friction during operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.