Valves for cryogenic refrigerators
US4294600A · kind A · utility
5Cited by
13References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 29, 1979 |
| Grant date | Oct 13, 1981 |
| Priority date | — |
| Expiry date | Oct 29, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86791
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An improved valve is provided for controlling the flow of working fluid in a cryogenic refrigerator of the type comprising a reciprocating displacer. The valve has a slidable valve member which is arranged to alternately introduce working fluid to or remove working fluid from a cooling chamber in response to reciprocating movement of the displacer. The valve is constructed so as to make certain that sliding movement of the valve member is not restricted by the working fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.