US3295334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat operated refrigerator operable on gas or electricity and control mechanism therefor
Assignee: Electrolux AB
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Filing: 1965-01-08
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Granted: 1967-01-03
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Expires: 1985-01-08
Abstract
No abstract record available.
Inventors
- 👤 Hultgren Nils Lennart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:47
CPC Classifications
F; F25; F25B; F25B49/00; F25B49/04; F25D; F25D11/00; F25D11/02; F25D11/027
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
IN COMBINATION WITH A REFRIGERATING SYSTEM OF THE TYPE ALTERNATIVELY EMPLOYING GAS AND ELECTRICITY AS POWER SOURCES AND IN WHICH COOLING IS EFFECTED BY A REFRIGERATION UNIT HAVING A HEAT RECEIVING PART, OF A GAS BURNER HEATING MEANS ADAPTED TO HEAT THE HEAT RECEIVING PART, MEANS FOR SUPPLYING GAS ENERGY TO SAID BURNER HEATING MEANS, ELECTRICAL HEATING MEANS ADAPTED TO HEAT THE HEAT RECEIVING PART, MEANS FOR CONDUCTING ELECTRICAL ENERGY TO SAID ELECTRICAL HEATING MEANS, AND CONTROL MECHANISM CONNECTED TO SAID GAS ENERGY SUPPLY MEANS AND TO SAID ELECTRICAL ENERGY CONDUCTING MEANS AND ADAPTED TO CONNECT SAID GAS ENERGY SUPPLY MEANS TO ITS ASSOCIATED HEATING MEANS AND TO DISCONNECT SAID ELECTRICAL ENERGY CONDUCTING MEANS FROM ITS ASSOCIATED HEATING MEANS OR TO CONNECT SAID ELECTRICAL ENERGY CONDUCTING MEANS TO ITS ASSOCIATED HEATING MEANS AND DISCONNECT SAID GAS ENERGY SUPPLY MEANS FROM ITS ASSOCIATED HEARING MEANS, SAID CONTROL MECHANISM COMPRISING AN ELECTRIC SWITCH WHICH IS COUPLED TO SAID ELECTRICAL ENERGY CONDUCTING MEANS AND TO SAID ELECTRICAL HEATING MEANS AND INCLUDES A FIRST INDEPENDENTLY MOVABLE
Claim 2
Dependent Claim
172 words
IN COMBINATION WITH A REFRIGERATING SYSTEM OF THE TYPE ALTERNATIVELY EMPLOYING GAS AND ELECTRICITY AS POWER SOURCES AND IN WHICH COOLING IS EFFECTED BY A REFRIGERATION UNIT HAVING A HEAT RECEIVING PART, OF A GAS BURNER HEATING MEANS ADAPTED TO HEAT THE HEAT RECEIVING PART, MEANS FOR SUPPLYING GAS ENERGY TO SAID BURNER HEATING MEANS, ELECTRICAL HEATING MEANS ADAPTED TO HEAT THE HEAT RECEIVING PART, MEANS FOR CONDUCTING ELECTRICAL ENERGY TO SAID ELECTRICAL HEATING MEANS, AND CONTROL MECHANISM CONNECTED TO SAID GAS ENERGY SUPPLY MEANS AND TO SAID ELECTRICAL ENERGY CONDUCTING MEANS AND ADAPTED TO CONNECT SAID GAS ENERGY SUPPLY MEANS TO ITS ASSOCIATED HEATING MEANS AND TO DISCONNECT SAID ELECTRICAL ENERGY CONDUCTING MEANS FROM ITS ASSOCIATED HEATING MEANS OR TO CONNECT SAID ELECTRICAL ENERGY CONDUCTING MEANS TO ITS ASSOCIATED HEATING MEANS AND DISCONNECT SAID GAS ENERGY SUPPLY MEANS FROM ITS ASSOCIATED HEARING MEANS, SAID CONTROL MECHANISM COMPRISING AN ELECTRIC SWITCH WHICH IS COUPLED TO SAID ELECTRICAL ENERGY CONDUCTING MEANS AND TO SAID ELECTRICAL HEATING MEANS AND INCLUDES A FIRST INDEPENDENTLY MOVABLE
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) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |