Patent US2137330A successfully refreshed from Google Patents.
Patent US3170305A successfully refreshed from Google Patents.
US3170305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigeration system defrost control
Assignee: Carrier Corp
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Filing: 1963-09-26
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Granted: 1965-02-23
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Expires: 1983-09-26
Abstract
No abstract record available.
Inventors
- 👤 David B Dibble
- 👤 Harry T Hale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:38
CPC Classifications
F; F25; F25B; F25B47/00; F25B47/02; F25B47/022; F25B47/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
188 words
IN A CONTROL ARRANGEMENT FOR A REVERSE CYCLE REFRIGERATION SYSTEM SELECTIVELY ENERGIZABLE TO HEAT AND COOL, HAVING COMPRESSION MEANS, AN OUTDOOR COIL, REFRIGERANT METERING MEANS, AND AN INDOOR COIL CONNECTED IN REFRIGERANT FLOW RELATIONSHIP TO COOL, AND MEANS FOR REVERSING THE FLOW OF REFRIGERANT THROUGH THE INDOOR COIL, SAID REFRIGERANT METERING MEANS, AND SAID OUTDOOR COIL INTHE COMBINATION COMPRISING CONTROL MEANS FOR REGULATING SAID REVERSING MEANS FOR DEFROSTING THE OUTDOOR COIL INCLUDING FIRST MEANS OPERABLE IN RESPONSE TO A FIRST OUTDOOR COIL CONDITION TO READY SAID DEFROSTING CONTROL MEANS FOR OPERATION, AND SECOND MEANS PERIODICALLY OPERABLE TO READY SAID DEFROSTING CONTROL MEANS FOR OPERATION, SAID DEFROSTING CONTROL MEANS BEING RESPONSIVE TO THE SUBSTANTIALLY SIMULTANEOUS ACTUATION OF THE FIRST AND SECOND MEANS TO DEFROST THE OUTDOOR COIL, SAID SECOND MEANS BEING ADAPTED TO TERMINATE OUTDOOR COIL DEFROST AFTER A PREDETERMINE TIME INTERVAL, SAID FIRST MEANS INTERVENING IN RESPONSE TO A SECOND OUTDOOR COIL CONDITION TO TERMINATE OUTDOOR COIL DEFROST DURING SAID PREDETERMINED TIME INTERVAL, AND CONDITION RESPONSE MEANS FOR REGULATING SAID DEFROST CONTROL MEANS TO PREVENT START-UP OF THE DEFROST CYCLE DURING THE REMAINDER OF THE PREDETERMINED TIME INTERVAL.
Claim 2
Dependent Claim
188 words
IN A CONTROL ARRANGEMENT FOR A REVERSE CYCLE REFRIGERATION SYSTEM SELECTIVELY ENERGIZABLE TO HEAT AND COOL, HAVING COMPRESSION MEANS, AN OUTDOOR COIL, REFRIGERANT METERING MEANS, AND AN INDOOR COIL CONNECTED IN REFRIGERANT FLOW RELATIONSHIP TO COOL, AND MEANS FOR REVERSING THE FLOW OF REFRIGERANT THROUGH THE INDOOR COIL, SAID REFRIGERANT METERING MEANS, AND SAID OUTDOOR COIL INTHE COMBINATION COMPRISING CONTROL MEANS FOR REGULATING SAID REVERSING MEANS FOR DEFROSTING THE OUTDOOR COIL INCLUDING FIRST MEANS OPERABLE IN RESPONSE TO A FIRST OUTDOOR COIL CONDITION TO READY SAID DEFROSTING CONTROL MEANS FOR OPERATION, AND SECOND MEANS PERIODICALLY OPERABLE TO READY SAID DEFROSTING CONTROL MEANS FOR OPERATION, SAID DEFROSTING CONTROL MEANS BEING RESPONSIVE TO THE SUBSTANTIALLY SIMULTANEOUS ACTUATION OF THE FIRST AND SECOND MEANS TO DEFROST THE OUTDOOR COIL, SAID SECOND MEANS BEING ADAPTED TO TERMINATE OUTDOOR COIL DEFROST AFTER A PREDETERMINE TIME INTERVAL, SAID FIRST MEANS INTERVENING IN RESPONSE TO A SECOND OUTDOOR COIL CONDITION TO TERMINATE OUTDOOR COIL DEFROST DURING SAID PREDETERMINED TIME INTERVAL, AND CONDITION RESPONSE MEANS FOR REGULATING SAID DEFROST CONTROL MEANS TO PREVENT START-UP OF THE DEFROST CYCLE DURING THE REMAINDER OF THE PREDETERMINED TIME INTERVAL.
References Cited (Backward Citations)
US2143687A
Cited
US2847833A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |