Rocker arm
US6283077A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 18, 2000 |
| Grant date | Sep 4, 2001 |
| Priority date | — |
| Expiry date | Feb 18, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/20882
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An rocker arm is tilted by a cam so as to open and close a valve provided on a cylinder head. This arm comprises a pair of opposing wall portions which are made by folding a flat plate so that they oppose substantially in parallel and cylindrical expanding portions which are formed at tilting fulcrum shaft mounting portions located in a center of the opposing wall portions in the length direction thereof, the expanding portions being expanded in the direction of the tilting fulcrum shaft. The cylindrical expanding portions which are thicker than the opposing wall portions receive a load accompanied by the tilting motion so as to decrease bearing stress applied to the opposing wall portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.