Hybrid cryogenic refrigerator
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 28, 1983
Grant Date -
N/A
app pub date -
Apr 19, 1982
filing date -
Apr 19, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The cryogenic refrigerator includes a movable displacer within an enclosure having first and second chambers of variable volume. A refrigerant fluid is circulated in a fluid path between said chambers by movement of the displacer. A spool valve controls introduction of high pressure fluid and low pressure fluid. The displacer movement, at least at top dead center and bottom dead center is controlled by an electric motor.
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