Patent US3248894A successfully refreshed from Google Patents.
US3248894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigeration apparatus
Assignee: Westinghouse Electric Corp
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Filing: 1965-02-08
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Granted: 1966-05-03
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Expires: 1985-02-08
Abstract
No abstract record available.
Inventors
- 👤 Philip F Harbour
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:43
CPC Classifications
F; F25; F25D; F25D17/00; F25D17/04; F25D17/06; F25D17/062; F25D17/065; F25D21/00; F25D21/06; F25D17/042; F25D17/045; F25D2317/00; F25D2317/06; F25D2317/065; F25D2317/0655; F25D2317/066; F25D2317/0661; F25D2317/0664; F25D2317/0665; F25D2400/00; F25D2400/04; F25D2400/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
226 words
IN APPARATUS HAVING A FREEZING COMPARTMENT AND AN ABOVE-FREEZING COMPARTMENT, A REFRIGERATANT, SYSTEM FOR SAID COMPARTMENT INCLUDING A COMPRESSOR, A CONDENSER AND AN EVAPORATOR, MEANS DEFINING A COMPARTMENT FOR SAID EVAPORATOR, SAID EVAPORATOR COMPARTMENT HAVING AN INLET THERETO FROM THE FREEZER COMPARTMENT AND AN OUTLET THEREFROM TO SAID FREEZER COMPARTENT AND HAVING AN INLET THERETO FROM THE ABOVE-FREEZING COMPARTMENT, MEANS LET THEREFROM TO SAID ABOVE-FREEZING COMPARTMENT, MEANS FOR CONTROLLING FLOW OF AIR THROUGHN SAID EVAPORATOR COMPARTMENT INLETS AND OUTLETS, MEANS FOR ADJUSTING SAID CONTROL MEANS FROM A FIRST POSITION WHEREIN THE INLET AND OUTLET COMMUNICATING WITH THE FREEZER COMPARTMENT ARE OPEN AND THE INLET AND OUTLET COMMUNICATING WITH THE ABOVE FREEZING COMPARTMENT ARE CLOSED TO A SECOND POSITION WHEREIN THE INLET AND OUTLET COMMUNICATING WITH THE FREEZER COMPARTMENT ARE CLOSED AND THE INLET AND OUTLET COMMUNICATING WITH THE ABOVE-FREEZING COMPARTMENT ARE OPEN, SAID ADJUSTING MEANS UNDER NORMAL CONDITIONS OF AMBIENT TEMPERATURE PROVIDING FOR OPERATING OF THE COMPRESSOR TO CHILL THE EVAPORATOR WHEN THE CONTROL MEANS IS IN SAID FIRST POSITION AND PREVENTING OPERATION OF SAID CONPRESSOR WHEN SAID CONTROL MEANS IS IN SECOND POSITION, SAID ADJUSTING MEANS INCLUDING MEANS OPERABLE TO CAUSE CONDTIONS OF ABNORMAL AMBIENT TEMPERATURE TO CAUSE OPERATION OF THE COMPRESSOR WHEN THE CONTROL MEANS IN SAID SECOND POSITION WHILE THE TEMPERATURE OF AIR IN SAID ABOVE-FREEZING COMPARTMENT IS ABOVE A PREDETERMINED DESIRED LEVEL.
Claim 2
Dependent Claim
226 words
IN APPARATUS HAVING A FREEZING COMPARTMENT AND AN ABOVE-FREEZING COMPARTMENT, A REFRIGERATANT, SYSTEM FOR SAID COMPARTMENT INCLUDING A COMPRESSOR, A CONDENSER AND AN EVAPORATOR, MEANS DEFINING A COMPARTMENT FOR SAID EVAPORATOR, SAID EVAPORATOR COMPARTMENT HAVING AN INLET THERETO FROM THE FREEZER COMPARTMENT AND AN OUTLET THEREFROM TO SAID FREEZER COMPARTENT AND HAVING AN INLET THERETO FROM THE ABOVE-FREEZING COMPARTMENT, MEANS LET THEREFROM TO SAID ABOVE-FREEZING COMPARTMENT, MEANS FOR CONTROLLING FLOW OF AIR THROUGHN SAID EVAPORATOR COMPARTMENT INLETS AND OUTLETS, MEANS FOR ADJUSTING SAID CONTROL MEANS FROM A FIRST POSITION WHEREIN THE INLET AND OUTLET COMMUNICATING WITH THE FREEZER COMPARTMENT ARE OPEN AND THE INLET AND OUTLET COMMUNICATING WITH THE ABOVE FREEZING COMPARTMENT ARE CLOSED TO A SECOND POSITION WHEREIN THE INLET AND OUTLET COMMUNICATING WITH THE FREEZER COMPARTMENT ARE CLOSED AND THE INLET AND OUTLET COMMUNICATING WITH THE ABOVE-FREEZING COMPARTMENT ARE OPEN, SAID ADJUSTING MEANS UNDER NORMAL CONDITIONS OF AMBIENT TEMPERATURE PROVIDING FOR OPERATING OF THE COMPRESSOR TO CHILL THE EVAPORATOR WHEN THE CONTROL MEANS IS IN SAID FIRST POSITION AND PREVENTING OPERATION OF SAID CONPRESSOR WHEN SAID CONTROL MEANS IS IN SECOND POSITION, SAID ADJUSTING MEANS INCLUDING MEANS OPERABLE TO CAUSE CONDTIONS OF ABNORMAL AMBIENT TEMPERATURE TO CAUSE OPERATION OF THE COMPRESSOR WHEN THE CONTROL MEANS IN SAID SECOND POSITION WHILE THE TEMPERATURE OF AIR IN SAID ABOVE-FREEZING COMPARTMENT IS ABOVE A PREDETERMINED DESIRED LEVEL.
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) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |