Portable refrigerator-freezer
Abstract
Abstract A PORTABLE TWO-TEMPERATURE ZONE REFRIDGERATOR HAVING A MOVABLE PARTITION DISPOSED WITHIN A FOOD RECEIVING CABINET TO DIVIDE THE SAME INTO TWO ADJUSTABLY SIZED FOOD RECEIVING SECTIONS. THE PARTITION IS SUBSTANTIALLY EQUAL TO THE WIDTH OF THE INTERIOR OF THE CABINET AND HAS A DEPTH LESS THAN THE DEPTH THEREOF SELECTIVELY TO PERMIT REFRIGERATED AIR TO CIRCULATE VERTICALLY AROUND THE PARTITION AND THUS BETWEEN THE TWO FOOD RECEIVING SECTIONS. THE INTERIOR WALLS OF THE CABINET ARE MADE OF METAL. REFRIGERATION MEANS ARE DISPOSED WITHIN AT LEAST ONE OF THE FOOD RECEIVING SECTIONS AND COMPRISE A REFRIGERATING COIL ATTACHED TO THE METAL INTERIOR WALL OF SUCH FOOD RECEIVING SECTION. THERMOSTATIC CONTROL MEANS ARE PROVIDED TO ADJUST THE TEMPERATURE SO AS TO ACHIEVE A TEMPERATURE DIFFERENTIAL BETWEEN THE TWO FOOD RECEIVING SECTIONS. VERTICAL ADJUSTMENT OF THE MOVABLE PARTITION PERMITS VARIATION IN THE TEMPERATURE DIFFERENTIAL BETWEEN THE TWO SECTIONS, WHILE REMOVAL OF THE PARTITION PERMITS THE ENTIRE CABINET TO ACHIEVE ONE TEMPERATURE WHICH MAY SELECTIVELY BE BELOW FREEZING.
Inventors
- 👤 John L Carson
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |