US3209547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoelectric refrigerator and method and heat dissipating surface
Assignee: Individual
•
Filing: 1961-08-21
•
Granted: 1965-10-05
•
Expires: 1981-08-21
Abstract
No abstract record available.
Inventors
- 👤 Thore M Elfving
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:11
CPC Classifications
F; F25; F25B; F25B21/00; F25B21/02; F25D; F25D11/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49359
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A REFRIGERATOR COMPRISING A FIRST REFRIGERATED SPACE AND A SECOND REFRIGERATED SPACE AT A HIGHER TEMPERATURE THAN THE FIRST SPACE, A DOUBLE WALLED LINING OF THE TYPE IN WHICH THE WALLS ARE BONDED OVER A PLURALITY OF PREDETERMINED AREAS TO FORM INTERCONNECTED SPACES FORMING CEILING, FLOOR AND SIDE WALLS OF SAID SECOND REFRIGERATED SPACE, A VOLATILE LIQUID HEAT TRANSFER MEDIUM PARTLY FILLING THE INTERCONNECTED SPACES OF SAID DOUBLE WALLED LINING, FIRST AND SECOND THERMOCOUPLE ASSEMBLIES EACH HAVING HOT AND COLD JUNCTION PLATES, THE HOT JUNCTIONS OF SAID FIRST THERMOCOUPLE ASSEMBLY BEING ELECTRICALLY INSULATED FROM THE DOUBLE WALLED LINING AND IN THERMAL CONTACT THEREWITH, THE COLD JUNCTIONS OF SAID FIRST THERMOCOUPLE ASSEMBLY DISPOSED IN HEAT EXCHANGE RELATIONSHIP TO THE
Claim 2
Dependent Claim
118 words
A REFRIGERATOR COMPRISING A FIRST REFRIGERATED SPACE AND A SECOND REFRIGERATED SPACE AT A HIGHER TEMPERATURE THAN THE FIRST SPACE, A DOUBLE WALLED LINING OF THE TYPE IN WHICH THE WALLS ARE BONDED OVER A PLURALITY OF PREDETERMINED AREAS TO FORM INTERCONNECTED SPACES FORMING CEILING, FLOOR AND SIDE WALLS OF SAID SECOND REFRIGERATED SPACE, A VOLATILE LIQUID HEAT TRANSFER MEDIUM PARTLY FILLING THE INTERCONNECTED SPACES OF SAID DOUBLE WALLED LINING, FIRST AND SECOND THERMOCOUPLE ASSEMBLIES EACH HAVING HOT AND COLD JUNCTION PLATES, THE HOT JUNCTIONS OF SAID FIRST THERMOCOUPLE ASSEMBLY BEING ELECTRICALLY INSULATED FROM THE DOUBLE WALLED LINING AND IN THERMAL CONTACT THEREWITH, THE COLD JUNCTIONS OF SAID FIRST THERMOCOUPLE ASSEMBLY DISPOSED IN HEAT EXCHANGE RELATIONSHIP TO THE
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |