US3115017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Defrosting system for refrigeration installation
Assignee: Copeland Industrial LP
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Filing: 1962-03-07
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Granted: 1963-12-24
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Expires: 1982-03-07
Abstract
No abstract record available.
Inventors
- 👤 Erich J Kocher
- 👤 Joseph N Long
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:50
CPC Classifications
F; F25; F25D; F25D21/00; F25D21/06; F25D21/12; F25D21/125
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
IN A REFRIGERATOR DEFROSTING SYSTEM, MEANS PROVIDING AN ENCLOSED SPACE TO BE REFRIGERATED, A HOUSING HAVING OPEN ENDS AND LOCATED WITHIN SAID SPACE, A REFRIGERANT AIR COOLING COIL CONFINED WITHIN SAID HOUSING, A REFRIGERANT SUPPLY MEANS, VALVE MEANS FOR NORMALLY CONNECTING SAID REFRIGERANT SUPPLY MEANS TO SAID COIL, A FAN FOR NORMALLY CIRCULATING AIR FROM SAID SPACE THROUGH SAID HOUSING IN CONTACT WITH SAID COIL AND BACK TO SAID SPACE, MEANS FOR PERIODICALLY INTERRUPTING THE DELIVERY OF REFRIGERANT TO SAID COIL BY SAID VALVE MEANS AND FOR SIMULTANEOUSLY ARRESTING OPERATION OF SAID FAN, MEANS FOR SEALING THE INTERIOR OF SAID HOUSING ON BOTH SIDES OF SAID COIL FROM SAID SPACE DURING SUCH PERIODS OF INTERRUPTION AND FOR SIMULTANEOUSLY PLACING THE INTERIOR OF SAID HOUSING IN COMMUNICATION WITH THE ATMOSPHERE EXTERIOR OF SAID ENCLOSED SPACE, AND A BLOWER FOR CIRCULATING WARM AIR FROM THE EXTERIOR THROUGH SAID SEALED HOUSING PORTION IN CONTACT WITH SAID COIL AND BACK TO THE EXTERIOR WHENEVER SAID REFRIGERANT DELIVERY AND FAN OPERATION IS INTERRUPTED.
Claim 2
Dependent Claim
168 words
IN A REFRIGERATOR DEFROSTING SYSTEM, MEANS PROVIDING AN ENCLOSED SPACE TO BE REFRIGERATED, A HOUSING HAVING OPEN ENDS AND LOCATED WITHIN SAID SPACE, A REFRIGERANT AIR COOLING COIL CONFINED WITHIN SAID HOUSING, A REFRIGERANT SUPPLY MEANS, VALVE MEANS FOR NORMALLY CONNECTING SAID REFRIGERANT SUPPLY MEANS TO SAID COIL, A FAN FOR NORMALLY CIRCULATING AIR FROM SAID SPACE THROUGH SAID HOUSING IN CONTACT WITH SAID COIL AND BACK TO SAID SPACE, MEANS FOR PERIODICALLY INTERRUPTING THE DELIVERY OF REFRIGERANT TO SAID COIL BY SAID VALVE MEANS AND FOR SIMULTANEOUSLY ARRESTING OPERATION OF SAID FAN, MEANS FOR SEALING THE INTERIOR OF SAID HOUSING ON BOTH SIDES OF SAID COIL FROM SAID SPACE DURING SUCH PERIODS OF INTERRUPTION AND FOR SIMULTANEOUSLY PLACING THE INTERIOR OF SAID HOUSING IN COMMUNICATION WITH THE ATMOSPHERE EXTERIOR OF SAID ENCLOSED SPACE, AND A BLOWER FOR CIRCULATING WARM AIR FROM THE EXTERIOR THROUGH SAID SEALED HOUSING PORTION IN CONTACT WITH SAID COIL AND BACK TO THE EXTERIOR WHENEVER SAID REFRIGERANT DELIVERY AND FAN OPERATION IS INTERRUPTED.
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) | 1966-12-23 | 1967-06-24 | 1967-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-23 | 1971-06-24 | 1971-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-23 | 1975-06-24 | 1975-12-24 | $7700.00 | Window Closed / Lapsed |