Volumetric screw compressor
US4490102A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 11, 1983 |
| Grant date | Dec 25, 1984 |
| Priority date | — |
| Expiry date | Jul 11, 2003 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C2230/91
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The compressor, with rotating assemblies of low inertia, and of compact construction, comprises, housed in a housing, two hollow rotors (5, 6), for example out of plastic material, fixed respectively on a front shaft member (20, 21) journalled in a front bulkhead (26) and each supported at the rear by a rear bearing assembly (11) fixed to a rear end wall (2) of the housing and entirely contained within the internal space (7, 7) in the rotor. The drive is provided by the female rotor (6). The inner surfaces of the housing and the outer surfaces of the rotor threads are coated with an overthickened layer of an erodable coating material containing particles of a dry lubricant material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.