US3080728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft air conditioning systems
Assignee: De Havilland Aircraft Co Ltd
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Filing: 1961-01-23
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Granted: 1963-03-12
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Expires: 1981-01-23
Abstract
No abstract record available.
Inventors
- 👤 Henry W Groves
- 👤 Bernard E Treganowan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:29
CPC Classifications
B; B64; B64D; B64D13/00; B64D13/06; B64D2013/0603
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
AN AIRCRAFT AIR CONDITIONING SYSTEM COMPRISING THE COMBINATION OF AN AIRCRAFT GAS TURBINE ENGINE HAVING A BLEED FOR COMPRESSED AIR FROM ITS COMPRESSOR, A COMPRESSOR FOR AIR HAVING AN INLET AND OUTLET, A FIRST TURBINE HAVING AN INLET AND AN OUTLET, A SECOND TURBINE HAVING AN INLET AND AN OUTLET, A DRIVING CONNECTION BETWEEN THE COMPRESSOR AND THE TURBINES, AN AIR CONNECTION FROM THE BLEED TO THE INLET OF THE COMPRESSOR FOR AIR AND TO THE INLET OF THE SECOND TURBINE, A HEAT EXCHANGER, AN AIR CONNECTION FROM THE OUTLET OF THE COMPRESSOR FOR AIR THROUGH THE HEAT EXCHANGER TO THE INLET OF THE FIRST TURBINE, AND AN AIR CONNECTION FROM THE OUTLET OF THE SECOND TURBINE TO THE HEAT EXCHANGER FOR THE FLOW OF AIR FROM THE SECOND TURBINE IN HEAT EXCHANGE RELATIONSHIP WITH AIR PASSING FROM THE COMPRESSOR TO THE FIRST TURBINE FROM WHOSE OUTLET CONDITIONED AIR IS OBTAINED.
Claim 2
Dependent Claim
151 words
AN AIRCRAFT AIR CONDITIONING SYSTEM COMPRISING THE COMBINATION OF AN AIRCRAFT GAS TURBINE ENGINE HAVING A BLEED FOR COMPRESSED AIR FROM ITS COMPRESSOR, A COMPRESSOR FOR AIR HAVING AN INLET AND OUTLET, A FIRST TURBINE HAVING AN INLET AND AN OUTLET, A SECOND TURBINE HAVING AN INLET AND AN OUTLET, A DRIVING CONNECTION BETWEEN THE COMPRESSOR AND THE TURBINES, AN AIR CONNECTION FROM THE BLEED TO THE INLET OF THE COMPRESSOR FOR AIR AND TO THE INLET OF THE SECOND TURBINE, A HEAT EXCHANGER, AN AIR CONNECTION FROM THE OUTLET OF THE COMPRESSOR FOR AIR THROUGH THE HEAT EXCHANGER TO THE INLET OF THE FIRST TURBINE, AND AN AIR CONNECTION FROM THE OUTLET OF THE SECOND TURBINE TO THE HEAT EXCHANGER FOR THE FLOW OF AIR FROM THE SECOND TURBINE IN HEAT EXCHANGE RELATIONSHIP WITH AIR PASSING FROM THE COMPRESSOR TO THE FIRST TURBINE FROM WHOSE OUTLET CONDITIONED AIR IS OBTAINED.
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) | 1966-03-11 | 1966-09-10 | 1967-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-11 | 1970-09-10 | 1971-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-11 | 1974-09-10 | 1975-03-12 | $7700.00 | Window Closed / Lapsed |