US3137146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigeration apparatus
Assignee: Whirlpool Corp
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Filing: 1961-07-27
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Granted: 1964-06-16
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Expires: 1981-07-27
Abstract
No abstract record available.
Inventors
- 👤 Ralph E Wallenbrock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:41
CPC Classifications
F; F25; F25D; F25D17/00; F25D17/04; F25D17/06; F25D17/062; F25D17/065; F25D21/00; F25D21/14; F25D2317/00; F25D2317/06; F25D2317/065; F25D2317/0653; F25D2317/066; F25D2317/0662; F25D2317/0664; F25D2317/067; F25D2321/00; F25D2321/14; F25D2321/141; F25D2321/1411; F25D2321/144; F25D2321/1442; F25D2321/146; F25D2400/00; F25D2400/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
REFRIGERATION APPARATUS COMPRISING: WALL MEANS DEFINING A CHAMBER HAVING LEFT AND RIGHT SIDE WALLS AND FRONT AND REAR END WALLS; MEANS FOR PROVIDING REFRIGERATED AIR UNDER PRESSURE FOR REFRIGERATING SAID CHAMBER TO A SUBFREEZING TEMPERATURE; MEANS FOR DELIVERING REFRIGERATED AIR FROM THE PROVIDING MEANS THROUGH A PLURALITY OF UPWARDLY OPENING INLETS TO THE CHAMBER ADJACENT TO EACH OF SAID WALLS AT THE BOTTOM OF SAID CHAMBER TO DEFINE A BLANKET OF COLD AIR SURROUNDING THE CHAMBER INWARDLY OF SAID WALLS AND THEREBY REFRIGERATE THE CHAMBER SUBSTANTIALLY UNIFORMLY THROUGHOUT TO SAID SUB-FREEZING TEMPERATURE; AND MEANS PRECLUDING DELIVERY OF REFRIGERATED AIR INTO SAID CHAMBER FROM THE BOTTOM OF THE CENTRAL PORTION OF THE CHAMBER.
Claim 2
Dependent Claim
112 words
REFRIGERATION APPARATUS COMPRISING: WALL MEANS DEFINING A CHAMBER HAVING LEFT AND RIGHT SIDE WALLS AND FRONT AND REAR END WALLS; MEANS FOR PROVIDING REFRIGERATED AIR UNDER PRESSURE FOR REFRIGERATING SAID CHAMBER TO A SUBFREEZING TEMPERATURE; MEANS FOR DELIVERING REFRIGERATED AIR FROM THE PROVIDING MEANS THROUGH A PLURALITY OF UPWARDLY OPENING INLETS TO THE CHAMBER ADJACENT TO EACH OF SAID WALLS AT THE BOTTOM OF SAID CHAMBER TO DEFINE A BLANKET OF COLD AIR SURROUNDING THE CHAMBER INWARDLY OF SAID WALLS AND THEREBY REFRIGERATE THE CHAMBER SUBSTANTIALLY UNIFORMLY THROUGHOUT TO SAID SUB-FREEZING TEMPERATURE; AND MEANS PRECLUDING DELIVERY OF REFRIGERATED AIR INTO SAID CHAMBER FROM THE BOTTOM OF THE CENTRAL PORTION OF THE CHAMBER.
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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) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |