US3359751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two temperature refrigerator
Assignee: Admiral Corp
•
Filing: 1966-10-14
•
Granted: 1967-12-26
•
Expires: 1986-10-14
Abstract
No abstract record available.
Inventors
- 👤 Frank L Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:09
CPC Classifications
F; F25; F25D; F25D17/00; F25D17/04; F25D17/06; F25D17/062; F25D17/065; F25B; F25B2600/00; F25B2600/11; F25B2600/112; F25D21/00; F25D21/06; F25D21/08; F25D2317/00; F25D2317/06; F25D2317/068; F25D2317/0682; F25D2400/00; F25D2400/06
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
179 words
A REFRIGERATOR COMPRISING: AN INSULATED CABINET; AN INSULATED VERTICAL WALL DIVIDING SAID CABINET INTO A BELOW FREEZING COMPARTMENT AND AN ABOVE FREEZING COMPARTMENT, EACH OF SAID COMPARTMENTS HAVING AN ACCESS OPENING THERETO AND MOVABLE DOORS FOR OPENING AND CLOSING SAID ACCESS OPENINGS; A REFRIGERATION SYSTEM, INCLUDING AN EVAPORATOR VERTICALLY MOUNTED ON A REAR WALL OF SAID BELOW FREEZING COMPARTMENT; SAID EVAPORATOR INCLUDING A SERPENTINE LIKE REFRIGERANT CONDUIT HAVING "U" SHAPED END LOOPS, AND A VERTICAL EVAPORATOR PARTITION POSITIONED PERPENDICULAR TO SAID REAR WALL DIVIDING SAID EVAPORATOR INTO A FIRST EVAPORATOR PASSAGE COMPRISING A MAJOR PORTION OF SAID REFRIGERANT CONDUIT AND A SECOND EVAPORATOR PASSAGE COMPRISING SAID END LOOPS; MEANS FORMING AN AIR PASSAGE IN SAID VERTICAL WALL HAVING AN INLET COMMUNICATING WITH SAID ABOVE FREEZING COMPARTMENT AND AN OUTLET ADJACENT SAID EVAPORATOR IN SAID BELOW FREEZING COMPARTMENT; AND FAN MEANS FOR ONLY CIRCULATING AIR IN SAID BELOW FREEZING COMPARTMENT THROUGH SAID FIRST EVAPORATOR PASSAGE AND ONLY CIRCULATING AIR FROM SAID ABOVE FREEZING COMPARTMENT THROUGH SAID AIR PASSAGE, THROUGH SAID SECOND EVAPORATOR PASSAGE, AND BACK TO SAID ABOVE FREEZING COMPARTMENT.
Claim 2
Dependent Claim
179 words
A REFRIGERATOR COMPRISING: AN INSULATED CABINET; AN INSULATED VERTICAL WALL DIVIDING SAID CABINET INTO A BELOW FREEZING COMPARTMENT AND AN ABOVE FREEZING COMPARTMENT, EACH OF SAID COMPARTMENTS HAVING AN ACCESS OPENING THERETO AND MOVABLE DOORS FOR OPENING AND CLOSING SAID ACCESS OPENINGS; A REFRIGERATION SYSTEM, INCLUDING AN EVAPORATOR VERTICALLY MOUNTED ON A REAR WALL OF SAID BELOW FREEZING COMPARTMENT; SAID EVAPORATOR INCLUDING A SERPENTINE LIKE REFRIGERANT CONDUIT HAVING "U" SHAPED END LOOPS, AND A VERTICAL EVAPORATOR PARTITION POSITIONED PERPENDICULAR TO SAID REAR WALL DIVIDING SAID EVAPORATOR INTO A FIRST EVAPORATOR PASSAGE COMPRISING A MAJOR PORTION OF SAID REFRIGERANT CONDUIT AND A SECOND EVAPORATOR PASSAGE COMPRISING SAID END LOOPS; MEANS FORMING AN AIR PASSAGE IN SAID VERTICAL WALL HAVING AN INLET COMMUNICATING WITH SAID ABOVE FREEZING COMPARTMENT AND AN OUTLET ADJACENT SAID EVAPORATOR IN SAID BELOW FREEZING COMPARTMENT; AND FAN MEANS FOR ONLY CIRCULATING AIR IN SAID BELOW FREEZING COMPARTMENT THROUGH SAID FIRST EVAPORATOR PASSAGE AND ONLY CIRCULATING AIR FROM SAID ABOVE FREEZING COMPARTMENT THROUGH SAID AIR PASSAGE, THROUGH SAID SECOND EVAPORATOR PASSAGE, AND BACK TO SAID ABOVE FREEZING COMPARTMENT.
Claim 3
Dependent Claim
138 words
THE COMBINATION AS SET FORTH IN CLAIM 1 INCLUDING ADDITIONALLY: A DUCT EXTENDING FROM ONE END OF SAID SECOND EVAPORATOR PASSAGE TO AN OPENING THROUGH AND DEFINED BY SAID VERTICAL DIVIDING WALL; SAID AIR PASSAGE FORMED IN SAID VERTICAL DIVIDING WALL HAVING ITS INLET ADJACENT THE BOTTOM OF SAID ABOVE FREEZING COMPARTMENT AND ITS OUTLET ADJACENT THE REMAINING END OF SAID SECOND EVAPORATOR PASSAGE; AND WHEREIN SAID FAN MEANS COMPRISE A FIRST FAN MOUNTED IN SAID BELOW FREEZING COMPARTMENT FOR MOVING AIR THEREIN, AND A SECOND FAN MOUNTED IN SAID OPENING FOR MOVING AIR FROM SAID ABOVE FREEZING COMPARTMENT THROUGH SAID PASSAGE IN THE VERTICAL WALL, THROUGH SAID SECOND EVAPORATOR PASSAGE, AND THROUGH SAID DUCT, THEREBY RETURNING IT TO SAID ABOVE FREEZING COMPARTMENT, AND MEANS CONTROLLING OPERATION OF SAID FANS RESPONSIVE TO THE RESPECTIVE TEMPERATURES OF SAID COMPARTMENTS.
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) | 1970-12-25 | 1971-06-26 | 1971-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-25 | 1975-06-26 | 1975-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-25 | 1979-06-26 | 1979-12-26 | $7700.00 | Window Closed / Lapsed |