Asymmetric oval piston with higher convexity thrust face
US4831919A · kind A · utility
23Cited by
10References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 7, 1986 |
| Grant date | May 23, 1989 |
| Priority date | — |
| Expiry date | Jul 7, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49249
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Pistons are described having oval polar profiles or both oval polar profiles and axial profiles machined to asymmetric curvatures about the plane which includes both the piston axis and the minor axis over at least a part of the skirt length, the asymmetry of the polar profile comprising a greater convexity about the major axis on the thrust face over at least part of the axial length of the skirt region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.