US3138026A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alternating current radiation bolometer
Assignee: Lockheed Martin Corp
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Filing: 1962-10-22
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Granted: 1964-06-23
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Expires: 1982-10-22
Abstract
No abstract record available.
Inventors
- 👤 Kahn David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:43
CPC Classifications
G; G01; G01J; G01J5/00; G01J5/10; G01J5/12; Y; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/848
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A RADIATION DETECTION SYSTEM COMPRISING: A BOLOMETER IN THE FORM OF A THERMALLY ISOLATED THERMOCOUPLE INCLUDING JOINED, DISSIMILAR MATERIALS, ONE OF SAID MATERIALS HAVING SUPERCONDUCTIVE PROPERTIES, SAID THERMOCOUPLE POSITIONED TO RECEIVE SAID RADIATION, MEANS FOR MAINTAINING SAID OTHER MATERIAL JUST ABOVE THE CRITICAL TRANSITION TEMPERATURE OF SAID SUPERCONDUCTIVE MATERIAL, MEANS FOR PASSING A DIRECT CURRENT THROUGH SAID THERMOCOUPLE TO EFFECT ALTERNATE TRANSITION OF SAID SUPERCONDUCTOR MATERIAL FROM THE SUPERCONDUCTIVE TO THE NORMAL STATE AS A RESULT OF PELTIER COOLING TO PRODUCE A SUPERIMPOSED ALTERNATING CURRENT FLOW THROUGH SAID THERMOCOUPLE, AND MEANS TO MEASURE THE FREQUENCY OF SAID ALTERNATING CURRENT AS A MEASUREMENT OF THE RADIATION IMPINGING UPON SAID BOLOMETER.
Claim 2
Dependent Claim
109 words
A RADIATION DETECTION SYSTEM COMPRISING: A BOLOMETER IN THE FORM OF A THERMALLY ISOLATED THERMOCOUPLE INCLUDING JOINED, DISSIMILAR MATERIALS, ONE OF SAID MATERIALS HAVING SUPERCONDUCTIVE PROPERTIES, SAID THERMOCOUPLE POSITIONED TO RECEIVE SAID RADIATION, MEANS FOR MAINTAINING SAID OTHER MATERIAL JUST ABOVE THE CRITICAL TRANSITION TEMPERATURE OF SAID SUPERCONDUCTIVE MATERIAL, MEANS FOR PASSING A DIRECT CURRENT THROUGH SAID THERMOCOUPLE TO EFFECT ALTERNATE TRANSITION OF SAID SUPERCONDUCTOR MATERIAL FROM THE SUPERCONDUCTIVE TO THE NORMAL STATE AS A RESULT OF PELTIER COOLING TO PRODUCE A SUPERIMPOSED ALTERNATING CURRENT FLOW THROUGH SAID THERMOCOUPLE, AND MEANS TO MEASURE THE FREQUENCY OF SAID ALTERNATING CURRENT AS A MEASUREMENT OF THE RADIATION IMPINGING UPON SAID BOLOMETER.
References Cited (Backward Citations)
US2924976A
Cited
US3022468A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |