US3127749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoelectric refrigeration
Assignee: Electrolux AB
•
Filing: 1962-04-10
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Granted: 1964-04-07
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Expires: 1982-04-10
Abstract
No abstract record available.
Inventors
- 👤 Bergvall Par
- 👤 Kai M B Siegbahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:58
CPC Classifications
F; F25; F25B; F25B21/00; F25B21/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A THERMOELECTRIC REFRIGERATION DEVICE COMPRISING A LINEAR THERMOPILE OF ANNULAR FORM HAVING INNER COLD JUNCTIONS ON ONE SIDE OF THE THERMOPILE DEFINING AN INNER CORE AND OUTER HOT JUNCTIONS ON THE OTHER SIDE OF THE THERMOPILE DEFINING AN OUTER RIM ENCIRCLING THE INNER CORE, THE THERMOPILE INCLUDING A GROUP OF THERMOELECTRIC ELEMENTS, AND MEANS FOR CONNECTING SAID ELEMENTS IN A CIRCUIT TO PROVIDE A PATH OF FLOW FOR CURRENT THROUGH THE THERMOPILE WHICH IS SUBSTANTIALLY IN THE FORM OF A SPIRAL AT THE SURFACE OF A TOROID.
Claim 2
Dependent Claim
87 words
A THERMOELECTRIC REFRIGERATION DEVICE COMPRISING A LINEAR THERMOPILE OF ANNULAR FORM HAVING INNER COLD JUNCTIONS ON ONE SIDE OF THE THERMOPILE DEFINING AN INNER CORE AND OUTER HOT JUNCTIONS ON THE OTHER SIDE OF THE THERMOPILE DEFINING AN OUTER RIM ENCIRCLING THE INNER CORE, THE THERMOPILE INCLUDING A GROUP OF THERMOELECTRIC ELEMENTS, AND MEANS FOR CONNECTING SAID ELEMENTS IN A CIRCUIT TO PROVIDE A PATH OF FLOW FOR CURRENT THROUGH THE THERMOPILE WHICH IS SUBSTANTIALLY IN THE FORM OF A SPIRAL AT THE SURFACE OF A TOROID.
References Cited (Backward Citations)
US2837899A
Cited
US3054840A
Cited
US2959017A
Cited
US2959925A
Cited
US3004393A
Cited
US3052100A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-07 | 1967-10-07 | 1968-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-07 | 1971-10-07 | 1972-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-07 | 1975-10-07 | 1976-04-07 | $7700.00 | Window Closed / Lapsed |