Refrigerant system lubricant and method
US5750046A · kind A · utility
9Cited by
4References
12Claims
0Family size
Inventor
Key dates
| Filing date | May 27, 1997 |
| Grant date | May 12, 1998 |
| Priority date | — |
| Expiry date | May 27, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2400/18
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method of maintaining and servicing air conditioning systems and compositions therefor are provided whereby newer, more environmentally friendly R-134a refrigerant gas is substituted for the older R-12 and R-22 types. In addition, a method of flushing and internal lubrication of the system is presented, along with a new flush solvent and a new lubricant composition for use with an R-134a refrigerant gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.