Oil control ring
US8770590B2 · kind B2 · utility
1Cited by
16References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 9, 2010 |
| Grant date | Jul 8, 2014 |
| Priority date | — |
| Expiry date | Nov 9, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J9/203
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An oil scraper piston ring includes a ring body having two radial outer running webs on the ring body, which are arranged one behind the other in relation to the run direction of the piston and are spaced apart from one another by an external depression. Each running web respectively has two scraper lips and a wear protection coating is provided on each scraper lip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.