Method and apparatus for exchanging oil in a compressor
US5522475A · kind A · utility
12Cited by
3References
11Claims
0Family size
Inventor
Key dates
| Filing date | Oct 14, 1994 |
| Grant date | Jun 4, 1996 |
| Priority date | — |
| Expiry date | Oct 14, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B2201/0404
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Apparatus and method of exchanging lubricating oil from the crankcase of a compressor. A unit including a pretrimmed flexible tube is introduced into the oil fill plug opening. By opening an internal valve, the oil under pressure exits through an opening in the unit, which is connected to a drain hose. After emptying, a hand oil pump is connected to the unit and fresh oil introduced into the compressor crankcase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.