Lubricant metering system for rotary piston mechanism
US4116593A · kind A · utility
14Cited by
2References
3Claims
0Family size
Inventor
Key dates
| Filing date | Jul 25, 1977 |
| Grant date | Sep 26, 1978 |
| Priority date | — |
| Expiry date | Jul 25, 1997 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01C21/04
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The lubricant metering system is for a rotary piston mechanism of the Wankel type and provides for by-passing a predetermined amount of lubricant past the oil seal ring carried by the rotary piston. The by-pass is one or more radially extending recesses of small total flow area in the contact surface of the oil seal ring, each of the recesses being in the nature of a scratch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.