Tappet roller bearing
US5816207A · kind A · utility
13Cited by
14References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 16, 1997 |
| Grant date | Oct 6, 1998 |
| Priority date | — |
| Expiry date | Jan 16, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2305/02
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A surface treatment layer for reducing friction is formed either on the outer peripheral surface of the shaft or on the inner peripheral surface of the roller opposed to the outer peripheral surface of the shaft with a small gap between them, wherein surface damages are prevented by the surface treatment layer from occurring on the outer peripheral surfaces immediately after the engine starts and before the engine oil is supplied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.