Patent US3390018A successfully refreshed from Google Patents.
US3390018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoelectric heat pump and heat flow pegs
Assignee: Calumet and Hecla Inc
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Filing: 1963-04-15
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Granted: 1968-06-25
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Expires: 1983-04-15
Abstract
No abstract record available.
Inventors
- 👤 Edward P Habdas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:03
CPC Classifications
H; H10; H10N; H10N10/00; H10N10/10; H10N10/17; H10N10/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A THERMOELECTRIC HEAT PUMP UNIT COMPRISING A FLAT MODULE HAVING A MULTILICITY OF SEMI-CONDUCTOR PELLETS, MEANS ELECTRICALLY CONNECTING SAID PELLETS IN SERIES, SAID PELLETS BEING ARRANGED WITH THERMALLY SIMILAR ENDS AT THE SAME SIDE OF SAID MODULE, HEAT FLOW PEGS COMPRISING METAL RODS AND METAL SHEATHS LATERALLY SURROUNDNG SAID RODS AND ELECTRICALLY INSULATED FROM SAID RODS, THIN ELECTRICALLY INSULATING, HEAT CONDUCTING FILMS IN FULL AREA CONTACT WITH AND INTERMEDIATE SAID RODS AND SHEATHS, SAID RODS BEING BONDED IN BOTH ELECTRICAL AND HEAT CONDUCTING RELATION TO THE SEMI-CONDUCTOR PELLETS, AND HEAT TRANSFER FINS CONNECTED TO SAID METAL SHEATHS.
Claim 2
Dependent Claim
114 words
A PAIR OF HEAT FLOW PEGS FOR USE WITH A THERMOELECTRIC HEAT PUMP COMPRISING A PLURALITY OF PELLETS OF SEMI-CONDUCTING MATERIAL, EACH OF SAID PEGS COMPRISING AN ELONGATED METAL ELEMENT, A METAL SHEATH LATERALLY SURROUNDING SAID ELEMENT AND ELECTRICALLY INSULATED THEREFROM, THE INSULATION BEING PROVIDED BY A CONTINUOUS LAYER OF AN ELECTRICALLY INSULATING, HEAT CONDUCTING MATERIAL IN GOOD HEAT CONDUCTING RELATION TO BOTH OF SAID ELEMENT AND SAID SHEATH, ONE END OF EACH OF SAID ELEMENTS BEING EXPOSED BY THE SHEATH ASSOCIATED THEREWITH TO PROVIDE FOR BONDING EACH OF SAID ELEMENTS TO AT LEAST ONE OF THE PELLETS WITHOUT CONTACT BETWEEN SAID SHEATH AND TH PELLET, AND METALLIC HEAT EXCHANGE MEANS CONNECTING SAID PEGS.
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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) | 1971-06-25 | 1971-12-25 | 1972-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-25 | 1975-12-25 | 1976-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-25 | 1979-12-25 | 1980-06-25 | $7700.00 | Window Closed / Lapsed |