Patent US3626707A successfully refreshed from Google Patents.
US3626707A
Expired / Lapsed
US
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Method and apparatus for defrosting refrigerators
Assignee: G Bauknecht GmbH
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Filing: 1970-04-23
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Granted: 1971-12-14
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Expires: 1990-04-23
Abstract
Abstract IN A TWO-TEMPERATURE REFRIGERATOR WHEREIN THE DEFROSTING OF THE COOLER EVAPORATOR IS EFFECTED BY NATURAL THAWING DURING THE PERIODIC INOPERATIVE PERIODS OF THE REFRIGERATING APPARATUS IN ORDER TO EXPEDITE SAID DEFROSTING, THE LIQUID REFRIGERANT PRESENT IN THE COOLER EVAPORATOR UPON STOPPAGE OF THE COMPRESSOR IS FORCED INTO THE FREEZER EVAPORATOR BY PNEUMATIC PRESSURE GENERATED BY THE EVAPORIZATION OF A SMALL QUANTITY OFF LIQUID REFRIGERANT INTRODUCED INTO THE COOLER EVAPORATOR THROUGH A CAPILLARY TUBE AT THE BEGINNING OF THE INOPERATIVE PERIOD.
Inventors
- 👤 Gottlob Bauknecht
- 👤 Karl Laszlo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:53
CPC Classifications
F; F25; F25D; F25D21/00; F25D21/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-13 | 1975-06-14 | 1975-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-13 | 1979-06-14 | 1979-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-13 | 1983-06-14 | 1983-12-14 | $7700.00 | Window Closed / Lapsed |