Patent US3224216A successfully refreshed from Google Patents.
US3224216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerator defrost tray
Assignee: Borg Warner Corp
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Filing: 1964-09-03
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Granted: 1965-12-21
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Expires: 1984-09-03
Abstract
No abstract record available.
Inventors
- 👤 Richard O Crouch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:49
CPC Classifications
F; F25; F25D; F25D21/00; F25D21/06; F25D21/08; F25D21/14; F25D2321/00; F25D2321/14; F25D2321/141; F25D2321/1413; F25D2321/144; F25D2321/1441
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A TRAY ADAPTED TO BE MOUNTED IN THE COOLING AREA OF A REFRIGERATOR, FREEZER OR LIKE UNIT AND COLLECT AND REMOVE WATER DURING THE DEFROSTING OF THE UNIT, THE COMBINATION COMPRISING A TOP LAYER OF LIGHT-WEIGHT MATERIAL HAVING A PREDETERMINE THROUGH SHAPE AND PROVIDED WITH AN UPPER SURFACE CONFIGURATION CONVERGING TO WARD AT LEAST ONE LOW POINT SO THAT WATER FLOWS OVER SAID SUFACE BY GRAVITY TO SAID LOW POINT, A BOTTOM LAYER OF LIGHTWEIGHT MATERIAL COMPLEMENTARILY SHAPED TO FIT BELOW SAID TOP LAYER, HEATING MEANS DISPOSED BETWEEN SAID TOP AND BOTTOM LAYERS RESPECTIVELY AND OPERATIVE TO RAISE THE TEMPERATURE OF SAID TOP LAYER TO MAINTAIN SAID DEFROST WATER IN A FLUID STATE, AND MEANS FOR HOLDING SAID RESPECTIVE LAYERS TOGETHER, SAID TOP AND BOTTOM LAYERS HAVING OPENINGS POSITIONED AT SAID LOW POINT FOR REMOVING THE WATER FROM THE TRAY
Claim 2
Dependent Claim
140 words
A TRAY ADAPTED TO BE MOUNTED IN THE COOLING AREA OF A REFRIGERATOR, FREEZER OR LIKE UNIT AND COLLECT AND REMOVE WATER DURING THE DEFROSTING OF THE UNIT, THE COMBINATION COMPRISING A TOP LAYER OF LIGHT-WEIGHT MATERIAL HAVING A PREDETERMINE THROUGH SHAPE AND PROVIDED WITH AN UPPER SURFACE CONFIGURATION CONVERGING TO WARD AT LEAST ONE LOW POINT SO THAT WATER FLOWS OVER SAID SUFACE BY GRAVITY TO SAID LOW POINT, A BOTTOM LAYER OF LIGHTWEIGHT MATERIAL COMPLEMENTARILY SHAPED TO FIT BELOW SAID TOP LAYER, HEATING MEANS DISPOSED BETWEEN SAID TOP AND BOTTOM LAYERS RESPECTIVELY AND OPERATIVE TO RAISE THE TEMPERATURE OF SAID TOP LAYER TO MAINTAIN SAID DEFROST WATER IN A FLUID STATE, AND MEANS FOR HOLDING SAID RESPECTIVE LAYERS TOGETHER, SAID TOP AND BOTTOM LAYERS HAVING OPENINGS POSITIONED AT SAID LOW POINT FOR REMOVING THE WATER FROM THE TRAY
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) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |