Patent US3091092A successfully refreshed from Google Patents.
US3091092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-stage refrigerating arrangement
Assignee: US Philips Corp
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Filing: 1961-05-15
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Granted: 1963-05-28
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Expires: 1981-05-15
Abstract
No abstract record available.
Inventors
- 👤 Dros Albert August
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:47
CPC Classifications
F; F25; F25B; F25B9/00; F25B9/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A MULTI-STAGE REFRIGERATING SYSTEM IN WHICH EACH OF TWO MEDIA PERFORM A SEPARATED CYCLE, SAID MEDIA BEING ALTERNATELY COMPRESSED AND EXPANDED WHEREBY SAID MEDIA HAVE DIFFERENT MEAN TEMPERATURES AND THE MEDIUM WITH THE HIGHER MEAN TEMPERATURE AT THE AREA WHERE IT HAS AT LEAST SUBSTANTIALLY ITS LOWEST TEMPERATURE BEING IN HEATEXCHANGING CONTACT WITH THE MEDIUM WITH LOWER MEANS TEMPERATURE AT THE AREA WHERE THIS MEDIUM HAS SUBSTANTIALLY ITS HIGHEST TEMPERATURE; COMPRISING A COLD GAS REFRIGERATOR PROVIDED WITH A CYLINDER HAVING A DOUBLE ACTTING PISTON AND A DISPLACER RECIPROCABLE THEREIN FOR THE CYCLE WITH THE LOWER MEAN TEMPERATURE, SAID PISTON AND DISPLACER HAVING DIFFERENT MEANS TEMPERATURES DURING OPERATION OF SAID SYSTEM, A REFRIGERATION MACHINE FOR THE CYCLE WITH THE HIGHER MEAN TEMPERATURE HAVING COMPRESSOR
Claim 2
Dependent Claim
123 words
A MULTI-STAGE REFRIGERATING SYSTEM IN WHICH EACH OF TWO MEDIA PERFORM A SEPARATED CYCLE, SAID MEDIA BEING ALTERNATELY COMPRESSED AND EXPANDED WHEREBY SAID MEDIA HAVE DIFFERENT MEAN TEMPERATURES AND THE MEDIUM WITH THE HIGHER MEAN TEMPERATURE AT THE AREA WHERE IT HAS AT LEAST SUBSTANTIALLY ITS LOWEST TEMPERATURE BEING IN HEATEXCHANGING CONTACT WITH THE MEDIUM WITH LOWER MEANS TEMPERATURE AT THE AREA WHERE THIS MEDIUM HAS SUBSTANTIALLY ITS HIGHEST TEMPERATURE; COMPRISING A COLD GAS REFRIGERATOR PROVIDED WITH A CYLINDER HAVING A DOUBLE ACTTING PISTON AND A DISPLACER RECIPROCABLE THEREIN FOR THE CYCLE WITH THE LOWER MEAN TEMPERATURE, SAID PISTON AND DISPLACER HAVING DIFFERENT MEANS TEMPERATURES DURING OPERATION OF SAID SYSTEM, A REFRIGERATION MACHINE FOR THE CYCLE WITH THE HIGHER MEAN TEMPERATURE HAVING COMPRESSOR
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) | 1966-05-27 | 1966-11-26 | 1967-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-27 | 1970-11-26 | 1971-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-27 | 1974-11-26 | 1975-05-28 | $7700.00 | Window Closed / Lapsed |