Low friction cam shaft
US6167856A · kind A · utility
5Cited by
40References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 3, 1993 |
| Grant date | Jan 2, 2001 |
| Priority date | — |
| Expiry date | Sep 3, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2107
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A low friction cam shaft for actuating at least one valve of an internal combustion engine includes a shaft member extending longitudinally, at least one cam secured to the shaft member, the cam being made of a plurality of density metal materials and having an outer surface impregnated with a solid film lubricant that has an affinity for oil and promotes rapid formation of a stable oil film to reduce friction therebetween.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.