Compressor assembly
US3999894A · kind A · utility
14Cited by
6References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 10, 1975 |
| Grant date | Dec 28, 1976 |
| Priority date | — |
| Expiry date | Nov 10, 1995 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05C2225/04
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A reciprocating piston assembly for a compressor is disclosed in that a piston with at least one groove formed in its outer surface is slidably mounted in a cylinder bore and at least one piston ring made of polymers of fluorine-containing olefin monomers, the outer diameter of said piston ring being smaller than the diameter of said cylinder bore prior to operation of the compressor but said piston ring being in contact with the inner wall defining said cylinder bore during operation of the compressor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.