US3302703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal valve
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1964-07-03
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Granted: 1967-02-07
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Expires: 1984-07-03
Abstract
No abstract record available.
Inventors
- 👤 Franklin G Kelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:40
CPC Classifications
F; F28; F28F; F28F13/00; F25; F25D; F25D19/00; F25D19/006; G; G05; G05D; G05D23/00; G05D23/01; G05D23/19; G05D23/1919; G05D23/192; G05D23/20; G05D23/22; G05D23/275; F28F2013/005; F28F2013/008
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
IN COMBINATION, A HEAT SOURCE AND A HEAT SINK IN CLOSE PROXIMITY TO EACH OTHER, A P MATERIAL AND AN N MATERIAL JOINED TO FORM A JUNCTION, SAID P-N JUNCTION CONNECTED BETWEEN SAID HEAT SOURCE AND SAID HEAT SINK AND ELECTRICALLY INSULATED FROM SAID HEAT SINK AND SAID HEAT SOURCE, SAID P MATERIAL AND SAID N MATERIAL BEING ORIENTED BETWEEN SAID HEAT SOURCE AND SAID HEAT SINK SUCH THAT HEAT FLOWS FROM THE HEAT SOURCE TO THE HEAT SINK THROUGH ONE OF SAID MATERIALS THEN THROUGH THE JUNCTION THEN THROUGH THE OTHER OF SAID MATERIALS, AND ELECTRICAL BIASING MEANS FOR CONTROLLING THE BIASING OF SAID P-N JUNCTION WHEREBY FORWARD BIASING RAISES THE THERMAL CONDUCTIVITY AND REVERSE BIASING LOWERS THE THERMAL CONDUCTIVITY.
Claim 2
Dependent Claim
121 words
IN COMBINATION, A HEAT SOURCE AND A HEAT SINK IN CLOSE PROXIMITY TO EACH OTHER, A P MATERIAL AND AN N MATERIAL JOINED TO FORM A JUNCTION, SAID P-N JUNCTION CONNECTED BETWEEN SAID HEAT SOURCE AND SAID HEAT SINK AND ELECTRICALLY INSULATED FROM SAID HEAT SINK AND SAID HEAT SOURCE, SAID P MATERIAL AND SAID N MATERIAL BEING ORIENTED BETWEEN SAID HEAT SOURCE AND SAID HEAT SINK SUCH THAT HEAT FLOWS FROM THE HEAT SOURCE TO THE HEAT SINK THROUGH ONE OF SAID MATERIALS THEN THROUGH THE JUNCTION THEN THROUGH THE OTHER OF SAID MATERIALS, AND ELECTRICAL BIASING MEANS FOR CONTROLLING THE BIASING OF SAID P-N JUNCTION WHEREBY FORWARD BIASING RAISES THE THERMAL CONDUCTIVITY AND REVERSE BIASING LOWERS THE THERMAL CONDUCTIVITY.
References Cited (Backward Citations)
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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) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |