US3299664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Forced draft refrigerator
Assignee: Individual
•
Filing: 1965-09-23
•
Granted: 1967-01-24
•
Expires: 1985-09-23
Abstract
No abstract record available.
Inventors
- 👤 John S Booth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:33
CPC Classifications
F; F25; F25D; F25D17/00; F25D17/04; F25D17/06; F25D2317/00; F25D2317/06; F25D2317/065; F25D2317/0654; F25D2317/066; F25D2317/0664; F25D2317/068; F25D2317/0683
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
196 words
A FORCED AIR REFRIGERATOR COMPRISING: AN INSULATED BOX HAVING AN ACCESS DOOR AND OPPOSITE INTERIOR SIDE WALLS, A PLURALITY OF SUBSTANTIALLY SOLID SHELVES EXTENDING HORIZONTALLY ACROSS THE INTERIOR OF THE BOX BETWEEN THE SIDE WALLS AND DIVIDING THE BOX INTO A PLURALITY OF VERTICALLY-STACKED COMPARTMENTS, AN AIR BLOWER DISPOSED ADJACENT THE BOTTOM OF THE BOX, A FIRST AIR DUCT EXTENDING FROM THE OUTPUT SIDE OF THE BLOWER UPWARDLY ALONG ONE OF SAID INTERIOR WALLS AND COMMUNICATING WITH EACH OF THE COMPARTMENTS THROUGH A SEPARATE INLET ORIFICE FORMED IN SAID ONE INTERIOR WALL WHICH ORIFICE INCREASES IN AREA FROM BOTTOM TO TOP, A SECOND AIR DUCT COMMUNICATING WITH EACH OF THE COMPARTMENTS THROUGH A RETURN FLOW ORIFICE, THE RETURN FLOW ORIFICES DECREASING IN AREA FROM BOTTOM TO TOP, AND EXTENDING DOWNWARDLY ALONG THE OTHER OF SAID INTERIOR WALLS TO THE INTAKE SIDE OF THE BLOWER, AND A REFRIGERATION SYSTEM HAVING A COOLING COIL DISPOSED IN THE AIR PATH FOR COOLING THE AIR AS IT IS CIRCULATED FROM THE BLOWER THROUGH THE FIRST DUCT, THROUGH THE INLET ORIFICES, ACROSS THE COMPARTMENTS, THROUGH THE RETURN FLOW ORIFICES, AND THROUGH THE SECOND AIR DUCT TO THE INPUT OF THE BLOWER.
Claim 2
Dependent Claim
196 words
A FORCED AIR REFRIGERATOR COMPRISING: AN INSULATED BOX HAVING AN ACCESS DOOR AND OPPOSITE INTERIOR SIDE WALLS, A PLURALITY OF SUBSTANTIALLY SOLID SHELVES EXTENDING HORIZONTALLY ACROSS THE INTERIOR OF THE BOX BETWEEN THE SIDE WALLS AND DIVIDING THE BOX INTO A PLURALITY OF VERTICALLY-STACKED COMPARTMENTS, AN AIR BLOWER DISPOSED ADJACENT THE BOTTOM OF THE BOX, A FIRST AIR DUCT EXTENDING FROM THE OUTPUT SIDE OF THE BLOWER UPWARDLY ALONG ONE OF SAID INTERIOR WALLS AND COMMUNICATING WITH EACH OF THE COMPARTMENTS THROUGH A SEPARATE INLET ORIFICE FORMED IN SAID ONE INTERIOR WALL WHICH ORIFICE INCREASES IN AREA FROM BOTTOM TO TOP, A SECOND AIR DUCT COMMUNICATING WITH EACH OF THE COMPARTMENTS THROUGH A RETURN FLOW ORIFICE, THE RETURN FLOW ORIFICES DECREASING IN AREA FROM BOTTOM TO TOP, AND EXTENDING DOWNWARDLY ALONG THE OTHER OF SAID INTERIOR WALLS TO THE INTAKE SIDE OF THE BLOWER, AND A REFRIGERATION SYSTEM HAVING A COOLING COIL DISPOSED IN THE AIR PATH FOR COOLING THE AIR AS IT IS CIRCULATED FROM THE BLOWER THROUGH THE FIRST DUCT, THROUGH THE INLET ORIFICES, ACROSS THE COMPARTMENTS, THROUGH THE RETURN FLOW ORIFICES, AND THROUGH THE SECOND AIR DUCT TO THE INPUT OF THE BLOWER.
References Cited (Backward Citations)
US1397392A
Cited
US2788641A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |