US3182467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigeration system with defrost
Assignee: Dual Jet Refrigeration Co
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Filing: 1962-05-09
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Granted: 1965-05-11
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Expires: 1982-05-09
Abstract
No abstract record available.
Inventors
- 👤 Beckwith Sterling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:37
CPC Classifications
A; A47; A47F; A47F3/00; A47F3/04; A47F3/0439; A47F3/0443; A47F3/0447; F; F25; F25D; F25D21/00; F25D21/06; F25D21/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
IN A REFRIGERATED CABINET DEFINING AN ACCESS OPENING IN ONE WALL COMMUNICATING THE OTHERWISE ENCLOSED SPACCE WITH THE OUTSIDE ATMOSHERE, MEANS FOR CIRCULATING A PLURALITY OF AIR PANELS ACROSS SAID OPENING AND THROUGH PASSAGES WITHIN SAID ENCLOSURE, AND MEANS FOR REFRIGERATING AT LEAST THE INNERMOST ONE OF SAID PANELS, THE IMPROVEMENT WHEREIN SAID REFRIGERATION MEANS COMPRISE SPACED APART COILS, HEATING MEANS LOCATED OVER THE FACES OF EACH OF SAID COILS WHICH ARE EXPOSED TO THE ONCOMING AIR PANEL, SAID HEATING MEANS BEING ADAPTED TO HEAT SUBSTANTIALLY ALL OF SAID ONCOMING AIR PANEL DURING A DEFROSTING OPERATION WHEREBY HEATED AIR IS CIRCULATED TO SAID REFRIGERATING MEANS THEREBY ACCELERATING THE DEFROSTING OPERATION, AND ADDITIONAL HEATING MEANS LOCATED BETWEEN THE INLET FOR THE PASSAGE CONFINING SAID INNERMOST PANEL AND THE CIRCULATING MEANS IN SAID PASSAGE, SAID ADDITIONAL HEATING MEANS ALSO BEING ADAPTED TO BE ENERGIZED DURING SAID DEFROSTING OPERATION.
Claim 2
Dependent Claim
146 words
IN A REFRIGERATED CABINET DEFINING AN ACCESS OPENING IN ONE WALL COMMUNICATING THE OTHERWISE ENCLOSED SPACCE WITH THE OUTSIDE ATMOSHERE, MEANS FOR CIRCULATING A PLURALITY OF AIR PANELS ACROSS SAID OPENING AND THROUGH PASSAGES WITHIN SAID ENCLOSURE, AND MEANS FOR REFRIGERATING AT LEAST THE INNERMOST ONE OF SAID PANELS, THE IMPROVEMENT WHEREIN SAID REFRIGERATION MEANS COMPRISE SPACED APART COILS, HEATING MEANS LOCATED OVER THE FACES OF EACH OF SAID COILS WHICH ARE EXPOSED TO THE ONCOMING AIR PANEL, SAID HEATING MEANS BEING ADAPTED TO HEAT SUBSTANTIALLY ALL OF SAID ONCOMING AIR PANEL DURING A DEFROSTING OPERATION WHEREBY HEATED AIR IS CIRCULATED TO SAID REFRIGERATING MEANS THEREBY ACCELERATING THE DEFROSTING OPERATION, AND ADDITIONAL HEATING MEANS LOCATED BETWEEN THE INLET FOR THE PASSAGE CONFINING SAID INNERMOST PANEL AND THE CIRCULATING MEANS IN SAID PASSAGE, SAID ADDITIONAL HEATING MEANS ALSO BEING ADAPTED TO BE ENERGIZED DURING SAID DEFROSTING OPERATION.
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) | 1968-05-10 | 1968-11-09 | 1969-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-10 | 1972-11-09 | 1973-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-10 | 1976-11-09 | 1977-05-11 | $7700.00 | Window Closed / Lapsed |