US3214938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermally powered cryogenic system
Assignee: Lockheed Martin Corp
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Filing: 1963-01-02
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Granted: 1965-11-02
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Expires: 1983-01-02
Abstract
No abstract record available.
Inventors
- 👤 George A Zotos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:41
CPC Classifications
F; F25; F25B; F25B27/00; F02; F02C; F02C6/00; F02C6/14; F02C6/16; F25B11/00; F25B23/00; Y; Y02; Y02E; Y02E60/00; Y02E60/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
HEAT POWERED CRYOGENIC REFRIGERATION APPARATUS UTILIZING A GASEOUS REFRIGERANT, COMPRISING IN COMBINATION A PAIR OF CLOSED LOOPS IN COMMUNICATION TO PROVIDE PATHS FOR THE GASEOUS REFRIGERANT; MEANS CONTINUALLY CIRCULATING AND COMPRESSING GASEOUS REFRIGERANT IN SAID LOOPS; COOLER MEANS INTERMEDIATE SAID LOOPS IN THE VICINITY OF SAID LAST MENTIONED MEANS AND ADAPTED TO SELECTIVELY REMOVE RESIDUAL HEAT AND HEAT OF COMPRESSION SO AS TO ESTABLISH A THERMAL SYMMETRY BETWEEN SAID PAIR OF LOOPS; MEANS FOR SUPPLYING HEAT TO THE GASEOUS REFRIGERANT IN ONE OF SAID LOOPS; MEANS RESPONSIVE TO THE HEATED GASEOUS REFRIGERANT FOR FULLY POWERING THE CIRCULATING MEANS; MEANS IN THE OTHER OF SAID LOOPS FOR COOLING THE REFRIGERANT; AND FURTHER MEANS IN THE OTHER OF SAID LOOPS FOR EXPANDING AND DECELERATING THE REFRIGERANT TO EFECT CRYOGENIC REFRIGERATION IN SAID OTHER LOOP.
Claim 2
Dependent Claim
132 words
HEAT POWERED CRYOGENIC REFRIGERATION APPARATUS UTILIZING A GASEOUS REFRIGERANT, COMPRISING IN COMBINATION A PAIR OF CLOSED LOOPS IN COMMUNICATION TO PROVIDE PATHS FOR THE GASEOUS REFRIGERANT; MEANS CONTINUALLY CIRCULATING AND COMPRESSING GASEOUS REFRIGERANT IN SAID LOOPS; COOLER MEANS INTERMEDIATE SAID LOOPS IN THE VICINITY OF SAID LAST MENTIONED MEANS AND ADAPTED TO SELECTIVELY REMOVE RESIDUAL HEAT AND HEAT OF COMPRESSION SO AS TO ESTABLISH A THERMAL SYMMETRY BETWEEN SAID PAIR OF LOOPS; MEANS FOR SUPPLYING HEAT TO THE GASEOUS REFRIGERANT IN ONE OF SAID LOOPS; MEANS RESPONSIVE TO THE HEATED GASEOUS REFRIGERANT FOR FULLY POWERING THE CIRCULATING MEANS; MEANS IN THE OTHER OF SAID LOOPS FOR COOLING THE REFRIGERANT; AND FURTHER MEANS IN THE OTHER OF SAID LOOPS FOR EXPANDING AND DECELERATING THE REFRIGERANT TO EFECT CRYOGENIC REFRIGERATION IN SAID OTHER LOOP.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |