US2756343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation measuring device
Assignee: General Electric Co
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Filing: 1952-10-02
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Granted: 1956-07-24
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Expires: 1972-10-02
Abstract
No abstract record available.
Inventors
- 👤 Peter D Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:40
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/02; G01T1/10; G01T1/11; G01T1/115
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A DEVICE FOR MEASURING WEAK RADIATIONS COMPRISING AN ENDLESS BELT MOUNTED ON A PAIR OF PULLEYS, MEANS FOR ROTATING ONE OF SAID PULLEYS AT ADJUSTABLE SPEED OF ROTATION, A COATING ON THE OUTER SURFACE OF SAID ENDLESS BELT OF A PHOSPHOR HAVING ELECTRON TRAPS AT A TEMPERATURE OF THE ORDER OF 25 DEGREES CENTIGRADE IN WHICH EMISSION AFTER EXPOSURE TO RADIATION MAY BE INDUCED BY THE APPLICATION OF HEAT TO SAID PHOSPHOR, A RADIATING MEANS IMPRESSING UPON SAID COATING AT A TEMPERATURE OF THE ORDER OF 25 DEGREES CENTRIGADE RADIANT ENERGY WHOSE ENERGY LEVEL IS TO BE MEASURED, MEANS FOR HEATING SAID PHOSPHOR TO EMISSION TEMPERATURE AFTER IT HAS BEEN SUBJECTED TO RADIATION, AND PHOTOELECTRIC MEANS FOR MEASURING THE INTENSITY OF SAID EMISSION SIMULTANEOUSLY WITH SAID HEATING.
Claim 2
Independent Claim
127 words
A DEVICE FOR MEASURING WEAK RADIATIONS COMPRISING AN ENDLESS BELT MOUNTED ON A PAIR OF PULLEYS, MEANS FOR ROTATING ONE OF SAID PULLEYS AT ADJUSTABLE SPEED OF ROTATION, A COATING ON THE OUTER SURFACE OF SAID ENDLESS BELT OF A PHOSPHOR HAVING ELECTRON TRAPS AT A TEMPERATURE OF THE ORDER OF 25 DEGREES CENTIGRADE IN WHICH EMISSION AFTER EXPOSURE TO RADIATION MAY BE INDUCED BY THE APPLICATION OF HEAT TO SAID PHOSPHOR, A RADIATING MEANS IMPRESSING UPON SAID COATING AT A TEMPERATURE OF THE ORDER OF 25 DEGREES CENTRIGADE RADIANT ENERGY WHOSE ENERGY LEVEL IS TO BE MEASURED, MEANS FOR HEATING SAID PHOSPHOR TO EMISSION TEMPERATURE AFTER IT HAS BEEN SUBJECTED TO RADIATION, AND PHOTOELECTRIC MEANS FOR MEASURING THE INTENSITY OF SAID EMISSION SIMULTANEOUSLY WITH SAID HEATING.
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) | 1959-07-24 | 1960-01-23 | 1960-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-24 | 1964-01-23 | 1964-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-24 | 1968-01-23 | 1968-07-24 | $7700.00 | Window Closed / Lapsed |