US3299661A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Check valve manifolds for heat pumps
Assignee: YORK-LUXAIRE Inc A CORP OF DE
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Filing: 1965-10-18
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Granted: 1967-01-24
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Expires: 1985-10-18
Abstract
No abstract record available.
Inventors
- 👤 James R Harnish
- 👤 Robert W Ayling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:00
CPC Classifications
F; F25; F25B; F25B13/00; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2544; Y10T137/2554; Y10T137/2559; Y10T137/2564; Y10T137/2567
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
IN A HEAT PUMP HAVING A REFRIGERANT COMPRESSOR; AN OUTDOOR HEAT EXCHANGER; AN INDOOR HEAT EXCHANGER, REVERSAL VALVE MEANS CONNECTED TO SAID COMPRESSOR AND TO SAID EXCHANGERS FOR ROUTING DISCHARGE GAS FROM SAID COMPRESSOR INTO SAID OUTDOOR EXCHANGER TO OPERATE SAID OUTDOOR EXCHANGER AS A CONDENSER, AND FOR ROUTING SUCTION GAS FROM SAID INDOOR EXCHANGER OPERATING AS AN EVAPORATOR TO SAID COMPRESSOR, OR FOR ROUTING DISCHARGE GAS FROM SAID COMPRESSOR INTO SAID INDOOR EXCHANGER TO OPERATE SAID INDOOR EXCHANGER AS A CONDENSER, AND FOR ROUTING SUCTION GAS FROM SAID OUTDOOR EXCHANGER OPERATING AS AN EVAPORATOR TO SAID COMPRESSOR; AND AN EXPANSION VALVE; THE COMBINATION OF A MANIFOLD HAVING A FIRST PORT CONNECTED TO SAID OUTDOOR EXCHANGER, HAVING A SECOND PORT CONNECTED TO SAID INDOOR EXCHANGER, HAVING A THIRD PORT CONNECTED TO THE OUTLET OF SAID EXPANSION VALVE, AND HAVING A FOURTH PORT CONNECTED TO THE INLET OF SAID EXPANSION VALVE; MEANS WITHIN SAID MANIFOLD INCLUDING MEANS RESPONSIVE TO THE FLOW OF REFRIGERANT THROUGH SAID FIRST PORT WHEN SAID OUTDOOR EXCHANGER
Claim 2
Dependent Claim
170 words
IN A HEAT PUMP HAVING A REFRIGERANT COMPRESSOR; AN OUTDOOR HEAT EXCHANGER; AN INDOOR HEAT EXCHANGER, REVERSAL VALVE MEANS CONNECTED TO SAID COMPRESSOR AND TO SAID EXCHANGERS FOR ROUTING DISCHARGE GAS FROM SAID COMPRESSOR INTO SAID OUTDOOR EXCHANGER TO OPERATE SAID OUTDOOR EXCHANGER AS A CONDENSER, AND FOR ROUTING SUCTION GAS FROM SAID INDOOR EXCHANGER OPERATING AS AN EVAPORATOR TO SAID COMPRESSOR, OR FOR ROUTING DISCHARGE GAS FROM SAID COMPRESSOR INTO SAID INDOOR EXCHANGER TO OPERATE SAID INDOOR EXCHANGER AS A CONDENSER, AND FOR ROUTING SUCTION GAS FROM SAID OUTDOOR EXCHANGER OPERATING AS AN EVAPORATOR TO SAID COMPRESSOR; AND AN EXPANSION VALVE; THE COMBINATION OF A MANIFOLD HAVING A FIRST PORT CONNECTED TO SAID OUTDOOR EXCHANGER, HAVING A SECOND PORT CONNECTED TO SAID INDOOR EXCHANGER, HAVING A THIRD PORT CONNECTED TO THE OUTLET OF SAID EXPANSION VALVE, AND HAVING A FOURTH PORT CONNECTED TO THE INLET OF SAID EXPANSION VALVE; MEANS WITHIN SAID MANIFOLD INCLUDING MEANS RESPONSIVE TO THE FLOW OF REFRIGERANT THROUGH SAID FIRST PORT WHEN SAID OUTDOOR EXCHANGER
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |