Rocker arm with an oil groove
US5394842A · kind A · utility
8Cited by
4References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 29, 1994 |
| Grant date | Mar 7, 1995 |
| Priority date | — |
| Expiry date | Jun 29, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/20882
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An improved rocker arm which is held in positive engagement with a head thrust surface of a cylinder head to avoid the occurrence of pitching of a valve stem end and vibration or noise from a valve-driving system. The rocker arm enables a rocker shaft spring to be set at a reduced load, whereby low friction is realized. An arm thrust surface of the rocker arm is provided with an oil groove having a predetermined depth. The arm thrust surface is positioned against a head thrust surface of the cylinder head. The oil groove communicates with the rocker shaft hole so as to introduce oil outside.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.