US3101596A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cold-gas refrigerator
Assignee: US Philips Corp
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Filing: 1961-06-08
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Granted: 1963-08-27
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Expires: 1981-06-08
Abstract
No abstract record available.
Inventors
- 👤 Rinia Herre
- 👤 Meijer Roelf Jan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:08
CPC Classifications
F; F02; F02G; F02G1/00; F02G1/04; F02G1/043; F25; F25B; F25B9/00; F25B9/14; F02G2243/00; F02G2243/02; F02G2243/04; F02G2270/00; F02G2270/85
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A COLD-GAS REFRIGERATOR HAVING A GASEOUS WORKING MEDIUM THEREIN PERFORMING A CLOSED THERMODYNAMIC CYCLE COMPRISING A COLD EXPANSION CHAMBER OF VARIABLE VOLUME AND A WARMER COMPRESSION CHAMBER OF VARIABLE VOLUME, A REGENERATOR COMMUNICATING WITH SAID CHAMBERS WHEREIN SAID GASEOUS WORKING MEDIUM FLOWS CYCLICALLY THROUGH SAID CHAMBERS AND REGENERATOR, A DUCT LEADING THROUGH THE WALL OF SAID COLD CHAMBER TO THE EXTERIOR THEREOF, A HEAT EXCHANGER FOR EXTRACTED COLD LOCATED A PREDETERMINED DISTANCE FROM SAID COLD CHAMBER, SAID DUCT CONNECTING TO SAID HEAT EXCHANGER WHEREBY COLD FROM SAID COLD CHAMBER IS SUPPLIED TO SAID HEAT EXCHANGER, AND ANOTHER DUCT CONNECTING SAID HEAT EXCHANGER WITH SAID WARMER COMPRESSION CHAMBER OF THE REGRIGERATOR, AND
Claim 2
Dependent Claim
111 words
A COLD-GAS REFRIGERATOR HAVING A GASEOUS WORKING MEDIUM THEREIN PERFORMING A CLOSED THERMODYNAMIC CYCLE COMPRISING A COLD EXPANSION CHAMBER OF VARIABLE VOLUME AND A WARMER COMPRESSION CHAMBER OF VARIABLE VOLUME, A REGENERATOR COMMUNICATING WITH SAID CHAMBERS WHEREIN SAID GASEOUS WORKING MEDIUM FLOWS CYCLICALLY THROUGH SAID CHAMBERS AND REGENERATOR, A DUCT LEADING THROUGH THE WALL OF SAID COLD CHAMBER TO THE EXTERIOR THEREOF, A HEAT EXCHANGER FOR EXTRACTED COLD LOCATED A PREDETERMINED DISTANCE FROM SAID COLD CHAMBER, SAID DUCT CONNECTING TO SAID HEAT EXCHANGER WHEREBY COLD FROM SAID COLD CHAMBER IS SUPPLIED TO SAID HEAT EXCHANGER, AND ANOTHER DUCT CONNECTING SAID HEAT EXCHANGER WITH SAID WARMER COMPRESSION CHAMBER OF THE REGRIGERATOR, AND
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) | 1966-08-26 | 1967-02-25 | 1967-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-26 | 1971-02-25 | 1971-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-26 | 1975-02-25 | 1975-08-27 | $7700.00 | Window Closed / Lapsed |