US3145543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for controlling the head pressure in refrigerating systems
Assignee: Trane Co
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Filing: 1960-02-01
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Granted: 1964-08-25
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Expires: 1980-02-01
Abstract
No abstract record available.
Inventors
- 👤 Robert G Miner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:46
CPC Classifications
F; F25; F25B; F25B49/00; F25B49/02; F25B49/027; Y; Y10; Y10S; Y10S62/00; Y10S62/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
IN A REFRIGERATION SYSTEM COMPRISING INTERCONNECTED COMPRESSOR, CONDENSER, EVAPORATOR, RECEIVER, AND EXPANSION DEVICE IN OPERATIVE RELATIONSHIP TO THE INLET TO THE EVAPORATOR, MEANS FOR PREVENTING THE HEAD PRESSURE IN THE SYSTEM UPSTREAM OF THE EXPANSION DEVICE FROM FALLING BELOW A PREDETERMINED MINIMUM REGARDLESS OF OF THE TEMPERATURE OF THE CONDENSER COOLANT OR RATE OF HEAT ABSORPTION BY THE EVAPORATOR, BY CONTROLLING THE LEVEL OF LIQUID REFRIGERANT IN THE CONDENSER, SAID MEANS COMPRISING MEANS FOR VAPORIZING LIQUID REFRIGERANT IN THE RECEIVER TO FORCE LIQUID REFRIGERANT FROM THE RECEIVER TO THE CONDENSER AND MEANS FOR CONTROLLING SAID LAST MENTIONED MEANS RESPONSIVE TO HEAD PRESSURE.
Claim 2
Dependent Claim
102 words
IN A REFRIGERATION SYSTEM COMPRISING INTERCONNECTED COMPRESSOR, CONDENSER, EVAPORATOR, RECEIVER, AND EXPANSION DEVICE IN OPERATIVE RELATIONSHIP TO THE INLET TO THE EVAPORATOR, MEANS FOR PREVENTING THE HEAD PRESSURE IN THE SYSTEM UPSTREAM OF THE EXPANSION DEVICE FROM FALLING BELOW A PREDETERMINED MINIMUM REGARDLESS OF OF THE TEMPERATURE OF THE CONDENSER COOLANT OR RATE OF HEAT ABSORPTION BY THE EVAPORATOR, BY CONTROLLING THE LEVEL OF LIQUID REFRIGERANT IN THE CONDENSER, SAID MEANS COMPRISING MEANS FOR VAPORIZING LIQUID REFRIGERANT IN THE RECEIVER TO FORCE LIQUID REFRIGERANT FROM THE RECEIVER TO THE CONDENSER AND MEANS FOR CONTROLLING SAID LAST MENTIONED MEANS RESPONSIVE TO HEAD PRESSURE.
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) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |