Side and gap sealed oil ring
US5564699A · kind A · utility
12Cited by
9References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 15, 1995 |
| Grant date | Oct 15, 1996 |
| Priority date | — |
| Expiry date | Feb 15, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J9/203
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An oil control ring assembly having a sealing ring and a scraping is disposed within a groove in a piston. The scraping ring assembly has a scraping end portion and spaced apart ends defining a gap. The sealing ring has a sealing end portion and mated spaced apart radially stepped ends defining a stepped gap. The stepped gap on the sealing ring is offset from the gap on the scraping ring. A spring positioned between an inner wall of the groove and the scraping ring biases the scraping ring at a specified tension. An alignment wire maintains misalignment between the stepped gap and the gap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.