US3259176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Environmental control system
Assignee: RTX Corp
•
Filing: 1963-07-09
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Granted: 1966-07-05
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Expires: 1983-07-09
Abstract
No abstract record available.
Inventors
- 👤 Ned C Rice
- 👤 William R Davison
- 👤 Frank R Biancardi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:02
CPC Classifications
F; F25; F25B; F25B11/00; F24; F24F; F24F5/00; F25B27/00; Y; Y10; Y10S; Y10S62/00; Y10S62/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A CONVERTIBLE HEATING-COOLING SYSTEM UTILIZING HEAT ENERGY AS A SOURCE, AN ENERGY RECEIVING GENERATOR COMPRISING A SUPPLY OF A SINGLE WORKING LIQUID WHICH BECOMES A WORKING GAS AT ELEVATED TEMPERATURE, A TURBINE RECEIVING WORKING GASES FROM SAID GENERATOR, A CONDENSER RECEIVING THE EXHAUST WORKING GASES FROM SAID TURBINE, MEANS FOR LIQUEFYING SAID WORKING GAS IN SAID CONDENSER, A PUMP CONNECTED TO SAID CONDENSER AND RECEIVING A OF THE WORKING LIQUID THEREFROM FOR CIRCULATING SAID BACK TO AID GENERATOR, AN EXPANSION VALVE RECEIVING OTHER PART OF THE WORKING LIQUID FROM SAID CONDENSE AN EVAPORATOR RECEIVING THE EXPANDED WORKING FLUID SAID VALVE, SAID CONDENSER INCLUDING HEAT EXCHANGE FOR EXCHANGING ENERGY, A COMPRESSOR ON THE OUTLET
Claim 2
Dependent Claim
113 words
A CONVERTIBLE HEATING-COOLING SYSTEM UTILIZING HEAT ENERGY AS A SOURCE, AN ENERGY RECEIVING GENERATOR COMPRISING A SUPPLY OF A SINGLE WORKING LIQUID WHICH BECOMES A WORKING GAS AT ELEVATED TEMPERATURE, A TURBINE RECEIVING WORKING GASES FROM SAID GENERATOR, A CONDENSER RECEIVING THE EXHAUST WORKING GASES FROM SAID TURBINE, MEANS FOR LIQUEFYING SAID WORKING GAS IN SAID CONDENSER, A PUMP CONNECTED TO SAID CONDENSER AND RECEIVING A OF THE WORKING LIQUID THEREFROM FOR CIRCULATING SAID BACK TO AID GENERATOR, AN EXPANSION VALVE RECEIVING OTHER PART OF THE WORKING LIQUID FROM SAID CONDENSE AN EVAPORATOR RECEIVING THE EXPANDED WORKING FLUID SAID VALVE, SAID CONDENSER INCLUDING HEAT EXCHANGE FOR EXCHANGING ENERGY, A COMPRESSOR ON THE OUTLET
References Cited (Backward Citations)
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Cited
US2200471A
Cited
US2155516A
Cited
US2875589A
Cited
US2952138A
Cited
US3153442A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-04 | 1970-01-03 | 1970-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-04 | 1974-01-03 | 1974-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-04 | 1978-01-03 | 1978-07-05 | $7700.00 | Window Closed / Lapsed |