US3350562A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Infrared radiometer having a black body reference surface and a spherical chopper
Assignee: North American Aviation Corp
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Filing: 1964-10-02
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Granted: 1967-10-31
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Expires: 1984-10-02
Abstract
No abstract record available.
Inventors
- 👤 Edward F Flint
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:31
CPC Classifications
G; G01; G01J; G01J5/00; G01J5/52; G01J5/53; G01J1/00; G01J1/02; G01J1/08; G01J5/02; G01J5/08; G01J5/0803; G01J5/0805; G01J1/04; G01J1/0403; G01J1/0407; G01J1/0411; G01J1/044
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A RADIOMETER COMPRISING A RADIATION DETECTOR ELEMENT, A CAVITY HAVING A BLACK BODY REFERENCE SURFACE DISPOSED IN THE WALL OF THE INNER PORTION OF SAID CAVITY, SAID RADIATION DETECTOR ELEMENT BEING LOCATED ON ONE SIDE OF SAID CAVITY FOR RECEIVING RAYS THERETHROUGH, AND A CHOPPER COMPRISING A CONCAVE REFLECTING SURFACE ROTATABLY MOUNTED FOR MOVEMENT ACROSS THE OPPOSITE SIDE OF SAID CAVITY TO ALTERNATELY PROVIDE A CONCAVE REFLECTING SURFACE FOR RADIATION EMITTED BY SAID REFERENCE SURFACE AND AN OPENING FOR RECEIVING RAYS FROM AN EXTERNAL SOURCE OF
Claim 2
Dependent Claim
86 words
A RADIOMETER COMPRISING A RADIATION DETECTOR ELEMENT, A CAVITY HAVING A BLACK BODY REFERENCE SURFACE DISPOSED IN THE WALL OF THE INNER PORTION OF SAID CAVITY, SAID RADIATION DETECTOR ELEMENT BEING LOCATED ON ONE SIDE OF SAID CAVITY FOR RECEIVING RAYS THERETHROUGH, AND A CHOPPER COMPRISING A CONCAVE REFLECTING SURFACE ROTATABLY MOUNTED FOR MOVEMENT ACROSS THE OPPOSITE SIDE OF SAID CAVITY TO ALTERNATELY PROVIDE A CONCAVE REFLECTING SURFACE FOR RADIATION EMITTED BY SAID REFERENCE SURFACE AND AN OPENING FOR RECEIVING RAYS FROM AN EXTERNAL SOURCE OF
References Cited (Backward Citations)
US2929293A
Cited
US3097300A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-30 | 1971-05-01 | 1971-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-30 | 1975-05-01 | 1975-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-30 | 1979-05-01 | 1979-10-31 | $7700.00 | Window Closed / Lapsed |