US3348978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transducers for radiation pyrometers
Assignee: Leeds and Northrup Co
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Filing: 1964-02-27
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Granted: 1967-10-24
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Expires: 1984-02-27
Abstract
No abstract record available.
Inventors
- 👤 Albert B Teague
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:05
CPC Classifications
G; G01; G01J; G01J5/00; G01J5/10; G01J5/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
141 words
A RADIANT-ENERGY TRANSDUCER INDLUDING A TARGET HAVING AN AREA FOR RECEIVING RADIATION FROM AN EXTERNAL SOURCE, TEMPERATURE-SENSITIVE ELECTRICAL MEANS IN THERMAL-CONDUCTIVE RELATION TO SAID TARGET AREA, THE COMBINATION OF SAID TARGET AND SAID ELECTRICAL MEANS PRODUCING AT TEMPERATURE EQUILIBRIUM OF THE TARGET AN ELECTRICAL OUTPUT WHICH IS REPRESENTATIVE OF THE RADIATION INPUT FROM SAID SOURCE AND WHICH CHANGES WITH CHANGE OF RADIATION INPUR AT A RATE DEPENDENT UPON THE THERMAL TIME-CONSTANT OF THE COMBINATION, AND MEANS FOR SUBSTANTIALLY ENHANCING THE ELECTRICAL OUTPUT OF SAID COMBINATION WITHOUT MATERIALLY INCREASING THE TIME-CONSTANT THEREOF COMPRISING A COATING OF TINY TRANSPARENT DIELECTRIC HOLLOW BEADS ON AT LEAST ONE FACE OF THE TARGET TO PROVIDE STRUCTURAL MEANS OF RELATIVELY LOW THERMAL MASS IN THE PATH OF RADIATION TO SAID TARGET AREA AND HAVING A SURFACE IN CLOSE-SPACED RELATION TO SAID AREA AND IN THERMALCONDUCITVE RELATION THEREWITH.
Claim 2
Dependent Claim
141 words
A RADIANT-ENERGY TRANSDUCER INDLUDING A TARGET HAVING AN AREA FOR RECEIVING RADIATION FROM AN EXTERNAL SOURCE, TEMPERATURE-SENSITIVE ELECTRICAL MEANS IN THERMAL-CONDUCTIVE RELATION TO SAID TARGET AREA, THE COMBINATION OF SAID TARGET AND SAID ELECTRICAL MEANS PRODUCING AT TEMPERATURE EQUILIBRIUM OF THE TARGET AN ELECTRICAL OUTPUT WHICH IS REPRESENTATIVE OF THE RADIATION INPUT FROM SAID SOURCE AND WHICH CHANGES WITH CHANGE OF RADIATION INPUR AT A RATE DEPENDENT UPON THE THERMAL TIME-CONSTANT OF THE COMBINATION, AND MEANS FOR SUBSTANTIALLY ENHANCING THE ELECTRICAL OUTPUT OF SAID COMBINATION WITHOUT MATERIALLY INCREASING THE TIME-CONSTANT THEREOF COMPRISING A COATING OF TINY TRANSPARENT DIELECTRIC HOLLOW BEADS ON AT LEAST ONE FACE OF THE TARGET TO PROVIDE STRUCTURAL MEANS OF RELATIVELY LOW THERMAL MASS IN THE PATH OF RADIATION TO SAID TARGET AREA AND HAVING A SURFACE IN CLOSE-SPACED RELATION TO SAID AREA AND IN THERMALCONDUCITVE RELATION THEREWITH.
Claim 3
Dependent Claim
79 words
A MULTIJUNCTION THERMOPILE SUITED FOR A RADIATION PYROMETER COMPRISING A TARGET HAVING A RADIANT-ENERGY RECEIVING AREA, AND AN ARRAY OF PAIRS OF THERMOCOUPLE ELEMENTS HAVING JUNCTIONS BONDED TO SAID TARGET AT POINTS SPACED SUBSTANTIALLY UNIFORMLY THROUGHOUT THE PERIMETER THEREOF AND WITH SAID ELEMENTS EXTENDING RADIALLY AND AUGULARLY THEREFROM IN THE FORM OF A CAGE HAVING A TRUNCATED CONE-LIKE CONFIGURATION WITH SAID TARGET AS A FRUSTRUM SURFACE INTERMEDIATE AND SPACED SUBSTANTIALLY FROM BOTH THE BASE AND APEX OF THE CONE.
Claim 4
Dependent Claim
79 words
A MULTIJUNCTION THERMOPILE SUITED FOR A RADIATION PYROMETER COMPRISING A TARGET HAVING A RADIANT-ENERGY RECEIVING AREA, AND AN ARRAY OF PAIRS OF THERMOCOUPLE ELEMENTS HAVING JUNCTIONS BONDED TO SAID TARGET AT POINTS SPACED SUBSTANTIALLY UNIFORMLY THROUGHOUT THE PERIMETER THEREOF AND WITH SAID ELEMENTS EXTENDING RADIALLY AND AUGULARLY THEREFROM IN THE FORM OF A CAGE HAVING A TRUNCATED CONE-LIKE CONFIGURATION WITH SAID TARGET AS A FRUSTRUM SURFACE INTERMEDIATE AND SPACED SUBSTANTIALLY FROM BOTH THE BASE AND APEX OF THE CONE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |