Patent US2351871A successfully refreshed from Google Patents.
US3138697A
Expired / Lapsed
US
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Black body radiation sources
Assignee: Barnes Engineering Co
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Filing: 1962-10-16
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Granted: 1964-06-23
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Expires: 1982-10-16
Abstract
No abstract record available.
Inventors
- 👤 Banca Maggio Charles
- 👤 Barnes Robert Bowling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:15
CPC Classifications
H; H05; H05B; H05B3/00; Y; Y10; Y10S; Y10S126/00; Y10S126/907; Y10S126/908
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
A BLACK BODY SOURCE OF RADIATION COMPRISING, (A) A BLACK BODY HAVING AN AXIAL SOURCE CAVITY OPENING AT ONE END THEREOF, (B) HEATING MEANS SURROUNDING THE CAVITY AND BEING AT LEAST APPROXIMATELY COAXIAL THEREWITH AND EXTENDING AXIALLY SUFFICIENTLY TO SUBSTANTIALLY SURROUND AT LEAST THE MAJOR PORTION OF THE CAVITY ADJACENT ITS OPENING, (C) STRONGLY THERMALLY ANISOTROPIC MATERIAL COMPOSED ESSENTIALLY OF AT LEAST ONE ELEMENT SELECTED FROM THOSE OF THE THIRD, FOURTH AND FIFTH GROUPS OF THE PERIODIC SYSTEM, THE ELEMENTS OF WHICH THE MATERIAL IS COMPOSED HAVING AN AVERAGE VALANCE OF 4, THE MATERIAL BEING BETWEEN THE WINDING AND THE CAVITY AND HAVING A DIRECTION OF HIGH THERMAL CONDUCTIVITY SUBSTANTIALLY NORMAL TO THE WINDING AND THE DIRECTION OF LOW THERMAL CONDUCTIVITY SUBSTANTIALLY PARALLEL TO THE AXIS OF THE CAVITY, THE THERMAL ANISOTROPY RATIO BEING IN EXCESS OF 10:1.
Claim 2
Dependent Claim
138 words
A BLACK BODY SOURCE OF RADIATION COMPRISING, (A) A BLACK BODY HAVING AN AXIAL SOURCE CAVITY OPENING AT ONE END THEREOF, (B) HEATING MEANS SURROUNDING THE CAVITY AND BEING AT LEAST APPROXIMATELY COAXIAL THEREWITH AND EXTENDING AXIALLY SUFFICIENTLY TO SUBSTANTIALLY SURROUND AT LEAST THE MAJOR PORTION OF THE CAVITY ADJACENT ITS OPENING, (C) STRONGLY THERMALLY ANISOTROPIC MATERIAL COMPOSED ESSENTIALLY OF AT LEAST ONE ELEMENT SELECTED FROM THOSE OF THE THIRD, FOURTH AND FIFTH GROUPS OF THE PERIODIC SYSTEM, THE ELEMENTS OF WHICH THE MATERIAL IS COMPOSED HAVING AN AVERAGE VALANCE OF 4, THE MATERIAL BEING BETWEEN THE WINDING AND THE CAVITY AND HAVING A DIRECTION OF HIGH THERMAL CONDUCTIVITY SUBSTANTIALLY NORMAL TO THE WINDING AND THE DIRECTION OF LOW THERMAL CONDUCTIVITY SUBSTANTIALLY PARALLEL TO THE AXIS OF THE CAVITY, THE THERMAL ANISOTROPY RATIO BEING IN EXCESS OF 10:1.
References Cited (Backward Citations)
US2952762A
Cited
US2827539A
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 |