US3159981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat pump including frost control means
Assignee: General Electric Co
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Filing: 1963-03-14
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Granted: 1964-12-08
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Expires: 1983-03-14
Abstract
No abstract record available.
Inventors
- 👤 Huskey Ben
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:47
CPC Classifications
F; F25; F25B; F25B13/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
IN A SELF-CONTAINED AIR CONDITIONING UNIT FOR HEATING AND COOLING AN ENCLOSURE, AN OUTDOOR HEAT EXCHANGER AND INDOOR HEAT EXCHANGER, A COMPRESSOR, MEANS FOR SELECTIVELY CONNECTING SAID COMPRESSOR TO SAID HEAT EXCHANGERS WHEREBY SAID OUTDOOR HEAT EXCHANGER FUNCTIONS AS AN EVAPORATOR DURING OPERATION OF SAID UNIT ON THE HEATING CYCLE AND SAID INDOOR HEAT EXCHANGER FUNCTIONS AS AN EVAPORATOR DURING OPERATION OF SAID UNIT ON THE COOLING CYCLE, AND COMPRESSOR CONTROL MEANS COMPRISING A THERMOSTAT INCLUDING A VAPOR FILLED BELLOWS AND A CAPILLARY TUBE SENSING ELEMENT CONNECTED TO SAID BELLOWS, SAID ELEMENT INCLUDING A FIRST PORTION IN CONTACT WITH SAID INDOOR TO HEAT EXCHANGER AND A SECOND PORTION IN CONTACT WITH SAID OUTDOOR HEAT EXCHANGER WHEREBY THE COMPRESSOR IS
Claim 2
Dependent Claim
119 words
IN A SELF-CONTAINED AIR CONDITIONING UNIT FOR HEATING AND COOLING AN ENCLOSURE, AN OUTDOOR HEAT EXCHANGER AND INDOOR HEAT EXCHANGER, A COMPRESSOR, MEANS FOR SELECTIVELY CONNECTING SAID COMPRESSOR TO SAID HEAT EXCHANGERS WHEREBY SAID OUTDOOR HEAT EXCHANGER FUNCTIONS AS AN EVAPORATOR DURING OPERATION OF SAID UNIT ON THE HEATING CYCLE AND SAID INDOOR HEAT EXCHANGER FUNCTIONS AS AN EVAPORATOR DURING OPERATION OF SAID UNIT ON THE COOLING CYCLE, AND COMPRESSOR CONTROL MEANS COMPRISING A THERMOSTAT INCLUDING A VAPOR FILLED BELLOWS AND A CAPILLARY TUBE SENSING ELEMENT CONNECTED TO SAID BELLOWS, SAID ELEMENT INCLUDING A FIRST PORTION IN CONTACT WITH SAID INDOOR TO HEAT EXCHANGER AND A SECOND PORTION IN CONTACT WITH SAID OUTDOOR HEAT EXCHANGER WHEREBY THE COMPRESSOR IS
References Cited (Backward Citations)
US3102396A
Cited
US2847190A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-12-08 | 1968-06-08 | 1968-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-08 | 1972-06-08 | 1972-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-08 | 1976-06-08 | 1976-12-08 | $7700.00 | Window Closed / Lapsed |