High temperature and high pressure compressor piston ring
US7510195B2 · kind B2 · utility
2Cited by
37References
43Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2003 |
| Grant date | Mar 31, 2009 |
| Priority date | — |
| Expiry date | Mar 13, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05C2203/0826
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A piston ring for use at temperatures above 350° F. at pressures greater than or equal to about 2000 psi, comprising a gap having a gap width about 1.4 to about 2.0 times greater than a thickness of the piston ring; a height about 4.5 to about 6.4 times larger than the thickness, and a leading edge characterized by an arc having a radius of curvature of less than or equal to about 4 times the height. The piston ring may be formed of a material comprising cobalt, chromium, tungsten, and carbon. A gas compressor and method of sealing a piston using the above piston ring is also provided for.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.