Patent US3348047A successfully refreshed from Google Patents.
US3348047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Differential radiometer having high and low absorption characteristics
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1964-07-07
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Granted: 1967-10-17
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Expires: 1984-07-07
Abstract
No abstract record available.
Inventors
- 👤 Richard P Clifford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:51
CPC Classifications
G; G01; G01J; G01J5/00; G01J5/10; G01J5/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A DIFFERENTIAL RADIOMETER COMPRISING: (A) A HOLLOW CYLINDRICAL BODY HAVING AN AXIAL OPENING IN ONE END THEREOF FOR ADMITTING RADIATION; (B) A PAIR OF THIN METALLIC HALF DISCS POSITIONED IN SAID OPENING WITH THEIR PERIPHERAL PORTIONS CONTACTING SAID BODY, ONE OF SAID HALF DISCS BEING COATED WITH A MATERIAL HAVING A HIGH ABSORPTANCE AND HIGH EMISSIVITY, THE OTHER OF SAID HALF DISCS BEING COATED WITH A MATERIAL HAVING A LOW ABSORPTANCE AND HIGH EMISSIVITY; (C) MEANS FOR RESISTIVELY SENSING THE TEMPERATURE ADJACENT THE CENTER OF CURVATURE OF EACH OF SAID HALF DISCS; (D) A QUARTZ WINDOW POSITIONED IN SAID OPENING BEFORE SAID HALF DISCS; (E) ELECTRIC CIRCUIT MEANS CONNECTED TO SAID SENSING MEANS FOR PROVIDING AN OUTPUT SIGNAL.
Claim 2
Dependent Claim
118 words
A DIFFERENTIAL RADIOMETER COMPRISING: (A) A HOLLOW CYLINDRICAL BODY HAVING AN AXIAL OPENING IN ONE END THEREOF FOR ADMITTING RADIATION; (B) A PAIR OF THIN METALLIC HALF DISCS POSITIONED IN SAID OPENING WITH THEIR PERIPHERAL PORTIONS CONTACTING SAID BODY, ONE OF SAID HALF DISCS BEING COATED WITH A MATERIAL HAVING A HIGH ABSORPTANCE AND HIGH EMISSIVITY, THE OTHER OF SAID HALF DISCS BEING COATED WITH A MATERIAL HAVING A LOW ABSORPTANCE AND HIGH EMISSIVITY; (C) MEANS FOR RESISTIVELY SENSING THE TEMPERATURE ADJACENT THE CENTER OF CURVATURE OF EACH OF SAID HALF DISCS; (D) A QUARTZ WINDOW POSITIONED IN SAID OPENING BEFORE SAID HALF DISCS; (E) ELECTRIC CIRCUIT MEANS CONNECTED TO SAID SENSING MEANS FOR PROVIDING AN OUTPUT SIGNAL.
References Cited (Backward Citations)
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US3054977A
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US3232113A
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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) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |