Refrigerant expansion device
US5689972A · kind A · utility
9Cited by
4References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 25, 1996 |
| Grant date | Nov 25, 1997 |
| Priority date | — |
| Expiry date | Nov 25, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7847
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
To prevent refrigerant leakage when operating in a metering mode, a refrigerant expansion device, designed to selectively operate in either the meteting or bypass mode of operation, has a cylindrical ring installed to tightly hold the meteting piston in its metering position so as to prevent leakage ofrefrigerant therearound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.