US3239663A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Velocity measurement utilizing neutron activation of oxygen
Assignee: Dresser Industries Inc
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Filing: 1961-12-04
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Granted: 1966-03-08
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Expires: 1981-12-04
Abstract
No abstract record available.
Inventors
- 👤 Howard I Oshry
- 👤 Arthur H Youmans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:11
CPC Classifications
G; G01; G01P; G01P1/00; G01P1/12; G01P1/122; G01N; G01N23/00; G01N23/22; G01N23/221; G01N23/222; G01P5/00; G01P5/18; G01P5/20; G01N2223/00; G01N2223/07; G01N2223/074; G01N2223/0745; G01N2223/60; G01N2223/635
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
118 words
A SYSTEM FOR MEASURING RELATIVE MOVEMENT BETWEEN A FLUID AND A SENSING STATION WITHIN SAID FLUID WHICH COMPRISES: (A) A NEUTRON SOURCE SUPPORTED WITHIN SAID FLUID FOR IRRADIATING THE SAME IN A LIMITED ZONE THEREOF WITH REPEATED SHORT PULSES OF HIGH ENERGY NEUTRONS TO ACTIVATE NUCLEI IN SAID ZONE BY PRODUCING AN ASSEMBLY OF RADIOACTIVE NUCLEI, EACH ASSEMBLY BEING INITIALLY DISTRIBUTED SYMMETRICALLY WITH RESPECT TO SAID SOURCE, (B) THREE DETECTORS RESPONSIVE TO GAMMA RAYS SUPPORTED WITH SAID SOURCE IN SAID FLUID SPACED FROM SAID SOURCE IN SYMMETRICAL ARRAY RELATIVE TO SAID SOURCE FOR DETECTING SAID RADIOACTIVE NUCLEI, AND (C) REGISTERING MEANS CONNECTED TO SAID DETECTORS FOR INDICATING THE MAGNITUDES OF THE DETECTED GAMMA RADIATION DUE TO SAID PULSES.
References Cited (Backward Citations)
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US2841713A
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US2873377A
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US2938119A
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US3115576A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |