Valve stem seal
US8746199B2 · kind B2 · utility
0Cited by
1References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 6, 2010 |
| Grant date | Jun 10, 2014 |
| Priority date | — |
| Expiry date | Dec 6, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2301/00
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A valve stem seal for an internal combustion engine includes a seal body having a gas seal assembly spaced from an oil seal assembly in the axial direction of the valve stem seal. The gas seal assembly includes a first gas lip and a second gas lip disposed between the oil seal assembly and the first gas lip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.