Patent US3213640A successfully refreshed from Google Patents.
US3213640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air turbocompressor refrigeration systems
Assignee: Individual
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Filing: 1963-04-19
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Granted: 1965-10-26
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Expires: 1983-04-19
Abstract
No abstract record available.
Inventors
- 👤 Dubinsky Moisei Grigorievich
- 👤 Tumansky Serge Konstantinovich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:20
CPC Classifications
F; F24; F24F; F24F5/00; F24F5/0085; F25; F25B; F25B9/00; F25B9/002; F25B9/004
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
AN AIR REFRIGERATION SYSTEM COMPRISING A REGENERATIVE HEAT EXCHANGER, A SECOND REGENERATIVE HEAT EXCHANGER, AN AIR INLET FROM THE ATMOSPHERE, VALVE MEANS FOR SELECTIVELY DIRECTING THE FLOW OF AIR FROM THE ATMOSPHERE TO ONE END OF EITHER SAID FIRST OR SECOND HEAT EXCHANGER, A REFRIGERATING CHAMBER, C ONDUIT CONNECTING THE OPPOSITE ENDS OF SAID FIRST AND SECOND HEAT EXCHANGER TO SAID CHAMBER, SECOND VALVE MEANS FOR SELECTIVELY DIRECTING THE FLOW OF AIR TO SAID CHAMBER FROM EITHER SAID FIRST OR SECOND HEAT EXCHANGER, A TURBOEXPANDER, A SECOND CONDUIT CONNECTING SAID CHAMBER AND THE INLET OF SAID EXPANDER, A BY-PASS CONDUIT CONNECTING SAID FIRST AND SECOND CONDUIT AND VALVES FOR CONTROLLING THE FLOW OF AIR IN SAID FIRST AND SECOND CONDUITS AND SAID BY-PASS CONDUIT, A THIRD CONDUIT CONNECTING THE OUTLET ON SAID EXPANDER AND SAID OPPOSITE ENDS OF SAID FIRST AND SECOND HEAT EXCHANGERS, SAID SECOND VALVE MEANS ALSO SERVING TO
Claim 2
Dependent Claim
151 words
AN AIR REFRIGERATION SYSTEM COMPRISING A REGENERATIVE HEAT EXCHANGER, A SECOND REGENERATIVE HEAT EXCHANGER, AN AIR INLET FROM THE ATMOSPHERE, VALVE MEANS FOR SELECTIVELY DIRECTING THE FLOW OF AIR FROM THE ATMOSPHERE TO ONE END OF EITHER SAID FIRST OR SECOND HEAT EXCHANGER, A REFRIGERATING CHAMBER, C ONDUIT CONNECTING THE OPPOSITE ENDS OF SAID FIRST AND SECOND HEAT EXCHANGER TO SAID CHAMBER, SECOND VALVE MEANS FOR SELECTIVELY DIRECTING THE FLOW OF AIR TO SAID CHAMBER FROM EITHER SAID FIRST OR SECOND HEAT EXCHANGER, A TURBOEXPANDER, A SECOND CONDUIT CONNECTING SAID CHAMBER AND THE INLET OF SAID EXPANDER, A BY-PASS CONDUIT CONNECTING SAID FIRST AND SECOND CONDUIT AND VALVES FOR CONTROLLING THE FLOW OF AIR IN SAID FIRST AND SECOND CONDUITS AND SAID BY-PASS CONDUIT, A THIRD CONDUIT CONNECTING THE OUTLET ON SAID EXPANDER AND SAID OPPOSITE ENDS OF SAID FIRST AND SECOND HEAT EXCHANGERS, SAID SECOND VALVE MEANS ALSO SERVING TO
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) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |