Oilless compressor with a pressurizable crankcase and motor containment vessel
US5957667A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 23, 1997 |
| Grant date | Sep 28, 1999 |
| Priority date | — |
| Expiry date | May 23, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B35/04
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An oilless gas compressor includes a motor containment vessel containing a motor for driving the compressor and a crankcase attached to the motor containment vessel. The crankcase and the motor containment vessel are fluidly connected and together define a sealed, pressurizable interior cavity in which the rotatable motor shaft is disposed. The compressor further includes a cylinder mounted upon the crankcase, the cylinder having a piston disposed therein. The piston is connected to the shaft for reciprocation of the piston within the cylinder. The cylinder also includes a gas intake valve, fluidly connected to the compressor suction inlet port, and a gas discharge valve, fluidly connected to the compressor discharge outlet port. The oilless gas compressor, in which the need for perimeter rotating shaft seals is obviated, is suitable for compression of precious or toxic gases or flammable gases, such as natural gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.