Patent US2953687A successfully refreshed from Google Patents.
US2953687A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Instrument for the measurement of radioactive aerosols
Assignee: Studsvik Energiteknik AB
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Filing: 1956-06-04
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Granted: 1960-09-20
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Expires: 1976-06-04
Abstract
No abstract record available.
Inventors
- 👤 Bergstedt Bengt Allan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:55
CPC Classifications
G; G01; G01T; G01T7/00; G01T7/02; G01T7/04; G21; G21C; G21C17/00; G21C17/02; G21C17/04; G21C17/044; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
AN INSTRUMENT FOR MEASURING THE ACTIVITY OF RADIOACTIVE AEROSOLS COMPRISING A SUBSTANTIALLY CYLINDRICAL DRUM ROTATABLE ABOUT ITS LONGITUDINAL AXIS, SAID DRUM HAVING AN AXIAL SLIT IN THE PERIPHERAL WALL THEREOF, A SUPPLY REEL AND A TAKE-UP REEL POSITIONED WITHIN SAID DRUM, A DUST COLLECTING TAPE WOUND UPON SAID SUPPLY REEL, ONE END OF SAID TAPE BEING FED OUTWARDLY FROM WITHIN SAID DRUM THROUGH SAID SLIT ABOUT THE OUTER PERIPHERY OF SAID DRUM, INTO SAID DRUM THROUGH SAID SLIT, AND BEING WOUND UPON SAID TAKE-UP REEL, AN ELECTROSTATIC PRECIPITATOR POSITIONED ADJACENT THE OUTER PERIPHERY OF SAID DRUM FOR DEPOSITING THE AEROSOL ON SAID TAPE, A DETECTOR FOR MEASURING THE DEGREE OF RADIOACTIVE RADIATION, SAID DETECTOR BEING POSITIONED ADJACENT THE OUTER PERIPHERY OF SAID DRUM AND PERIPHERALLY SPACED FROM SAID PRECIPITATOR, AND MEANS FOR ROTATABLY DRIVING SAID DRUM AT A CONSTANT SPEED.
Claim 2
Dependent Claim
140 words
AN INSTRUMENT FOR MEASURING THE ACTIVITY OF RADIOACTIVE AEROSOLS COMPRISING A SUBSTANTIALLY CYLINDRICAL DRUM ROTATABLE ABOUT ITS LONGITUDINAL AXIS, SAID DRUM HAVING AN AXIAL SLIT IN THE PERIPHERAL WALL THEREOF, A SUPPLY REEL AND A TAKE-UP REEL POSITIONED WITHIN SAID DRUM, A DUST COLLECTING TAPE WOUND UPON SAID SUPPLY REEL, ONE END OF SAID TAPE BEING FED OUTWARDLY FROM WITHIN SAID DRUM THROUGH SAID SLIT ABOUT THE OUTER PERIPHERY OF SAID DRUM, INTO SAID DRUM THROUGH SAID SLIT, AND BEING WOUND UPON SAID TAKE-UP REEL, AN ELECTROSTATIC PRECIPITATOR POSITIONED ADJACENT THE OUTER PERIPHERY OF SAID DRUM FOR DEPOSITING THE AEROSOL ON SAID TAPE, A DETECTOR FOR MEASURING THE DEGREE OF RADIOACTIVE RADIATION, SAID DETECTOR BEING POSITIONED ADJACENT THE OUTER PERIPHERY OF SAID DRUM AND PERIPHERALLY SPACED FROM SAID PRECIPITATOR, AND MEANS FOR ROTATABLY DRIVING SAID DRUM AT A CONSTANT SPEED.
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) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |