US3190079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat pumps
Assignee: Westinghouse Electric Corp
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Filing: 1963-09-18
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Granted: 1965-06-22
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Expires: 1983-09-18
Abstract
No abstract record available.
Inventors
- 👤 Rodney F Lauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:32
CPC Classifications
F; F25; F25B; F25B13/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
179 words
A HEAT PUMP COMPRISING AN INDOOR AIR COIL, AN OUTDOOR AIR COIL, A REFRIGERANT COMPRESSOR, REVERSAL VALVE MEANS AND TWO-WAY EXPANSION MEANS CONNECTED IN A CLOSED REFRIGERATION CIRCUIT, MEANS INCLUDING A FIRST SOLENOID FOR ADJUSTING SAID VALVE MEANS TO ROUTE REFRIGERANT FROM SAID COMPRESSOR TO SAID OUTDOOR COIL TO OPERATE SAID OUTDOOR COIL AS A CONDENSER AND SAID INDOOR COIL AS AN EVAPORATOR, AND FOR ADJUSTING SAID VALVE MEANS TO ROUTE REFRIGERANT FROM SAID COMPRESSOR TO SAID INDOOR COIL TO OPERATE SAID INDOOR COIL AS A CONDENSER AND SAID OUTDOOR COIL AS AN EVAPORATOR, SAID VALVE MEANS BEING ADJUSTED TO ROUTE REFRIGERANT FROM SAID COMPRESSOR TO SAID OUTDOOR COIL WHEN SAID SOLENOID IS ENERGIZED, AND TO ROUTE REFRIGERANT FROM SAID COMPRESSOR TO SAID INDOOR COIL WHEN SAID SOLENOID IS DEENERGIZED, A BY-PASS TUBE CONNECTING SAID COILS, A NORMALLY CLOSED VALVE IN SAID TUBE, A NORMALLY ENERGIZED, SECOND SOLENOID FOR OPENING SAID NORMALLY CLOSED VALVE WHEN SAID SECOND SOLENOID IS ENERGIZED, A DEFROST RELAY HAVING A NORMALLY CLOSED SWITCH, A DEFROST INITIATING CONTROL HAVING A SWITCH WHICH CLOSES WHEN FROST
Claim 2
Dependent Claim
179 words
A HEAT PUMP COMPRISING AN INDOOR AIR COIL, AN OUTDOOR AIR COIL, A REFRIGERANT COMPRESSOR, REVERSAL VALVE MEANS AND TWO-WAY EXPANSION MEANS CONNECTED IN A CLOSED REFRIGERATION CIRCUIT, MEANS INCLUDING A FIRST SOLENOID FOR ADJUSTING SAID VALVE MEANS TO ROUTE REFRIGERANT FROM SAID COMPRESSOR TO SAID OUTDOOR COIL TO OPERATE SAID OUTDOOR COIL AS A CONDENSER AND SAID INDOOR COIL AS AN EVAPORATOR, AND FOR ADJUSTING SAID VALVE MEANS TO ROUTE REFRIGERANT FROM SAID COMPRESSOR TO SAID INDOOR COIL TO OPERATE SAID INDOOR COIL AS A CONDENSER AND SAID OUTDOOR COIL AS AN EVAPORATOR, SAID VALVE MEANS BEING ADJUSTED TO ROUTE REFRIGERANT FROM SAID COMPRESSOR TO SAID OUTDOOR COIL WHEN SAID SOLENOID IS ENERGIZED, AND TO ROUTE REFRIGERANT FROM SAID COMPRESSOR TO SAID INDOOR COIL WHEN SAID SOLENOID IS DEENERGIZED, A BY-PASS TUBE CONNECTING SAID COILS, A NORMALLY CLOSED VALVE IN SAID TUBE, A NORMALLY ENERGIZED, SECOND SOLENOID FOR OPENING SAID NORMALLY CLOSED VALVE WHEN SAID SECOND SOLENOID IS ENERGIZED, A DEFROST RELAY HAVING A NORMALLY CLOSED SWITCH, A DEFROST INITIATING CONTROL HAVING A SWITCH WHICH CLOSES WHEN FROST
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) | 1968-06-21 | 1968-12-21 | 1969-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-21 | 1972-12-21 | 1973-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-21 | 1976-12-21 | 1977-06-22 | $7700.00 | Window Closed / Lapsed |