US3225549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoelectric cooling device
Assignee: Individual
•
Filing: 1962-04-18
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Granted: 1965-12-28
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Expires: 1982-04-18
Abstract
No abstract record available.
Inventors
- 👤 Thore M Elfving
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:10
CPC Classifications
F; F25; F25B; F25B21/00; F25B21/02; F25B21/04; H; H10; H10N; H10N10/00; H10N10/10; H10N10/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A THERMOELECTRIC HEAT PUMP ASSEMBLY HAVING HOT AND COLD SIDES FORMED BY SPACED COVER PLATES COMPRISING A PLURALITY OF THERMOELECTRIC ELEMENTS HAVING THEIR ENDS SECURED DIRECTLY TO HOT AND COLD JUNCTION PLATES, SAID THERMOELECTRIC ELEMENTS EACH HAVING A LENGTH WHICH IS LESS THAN THREE MILLIMETERS AND ALSO LESS THAN ITS MAJOR CROSSSECTIONAL DIMENSION, SAID JUNCTION PLATES BEING ELECTRICALLY INSULATED FROM AND IN THERMAL CONTACT WITH THE CORRESPONDING COVER PLATE, MEANS PROVIDING A SEAL ALONG THE EDGE OF SAID COVER PLATES TO FORM THEREWITH AN EVACUATED ENVELOPE SURROUNDING SAID THERMOCOUPLES, AND CONDUTOR MEANS EXTENDING INTO SAID ENVELOPE FOR SUPPLYING ELECTRICAL ENERGY TO SAID THERMOELECTRIC ELEMENTS.
Claim 2
Dependent Claim
104 words
A THERMOELECTRIC HEAT PUMP ASSEMBLY HAVING HOT AND COLD SIDES FORMED BY SPACED COVER PLATES COMPRISING A PLURALITY OF THERMOELECTRIC ELEMENTS HAVING THEIR ENDS SECURED DIRECTLY TO HOT AND COLD JUNCTION PLATES, SAID THERMOELECTRIC ELEMENTS EACH HAVING A LENGTH WHICH IS LESS THAN THREE MILLIMETERS AND ALSO LESS THAN ITS MAJOR CROSSSECTIONAL DIMENSION, SAID JUNCTION PLATES BEING ELECTRICALLY INSULATED FROM AND IN THERMAL CONTACT WITH THE CORRESPONDING COVER PLATE, MEANS PROVIDING A SEAL ALONG THE EDGE OF SAID COVER PLATES TO FORM THEREWITH AN EVACUATED ENVELOPE SURROUNDING SAID THERMOCOUPLES, AND CONDUTOR MEANS EXTENDING INTO SAID ENVELOPE FOR SUPPLYING ELECTRICAL ENERGY TO SAID THERMOELECTRIC ELEMENTS.
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) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |