US3076894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gamma ray thickness gauges
Assignee: United Kingdom Atomic Energy Authority
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Filing: 1954-05-28
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Granted: 1963-02-05
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Expires: 1974-05-28
Abstract
No abstract record available.
Inventors
- 👤 Putman John Laban
- 👤 Jefferson Sidney
- 👤 Owen Richard Bruce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:27
CPC Classifications
G; G01; G01N; G01N23/00; G01N23/20; G01N23/203
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A THICKNESS GAUGE COMPRISING A GAMMA-RAY SOURCE, AN ENERGY-SENSITIVE GAMMA-RAY DETECTOR WHEREIN THE AMPLITUDE OF THE OUTPUT OF THE DETECTOR VARIES WITH THE ENERGY OF THE INPUT, MEANS MOUNTING SAID SOURCE AND SAID DETECTOR SUCH THAT SAID SOURCE MAY BE PLACED CLOSE TO A SURFACE AREA AND SUCH THAT SAID DETECTOR IS DIRECTLY EXPOSED BOTH TO SAID SOURCE AND TO SAID SURFACE AREA, AND ELECTRONIC CIRCUIT MEANS COMPRISING A SINGLE-CHANNEL PULSE-AMPLITUDE ANALYZER, SAID ANALYZER BEING ADJUSTABLE TO BLOCK MOST OF THE PULSES DUE TO DIRECT EXCITATION OF SAID DETECTOR AND TO PASS PULSES WHICH ARE DERIVED FROM GAMMA-RAYS BACK-SCATTERED FROM SAID SURFACE AREA, AND A RATE-METER FOR INDICATING THE COUNT-RATE OF THOSE PULSES AT THE OUTPUT OF THE DETECTOR WHICH ARE DERIVED SOLELY FROM GAMMA-RAYS BACK-SCATTERED FROM SAID SURFACE AREA.
Claim 2
Dependent Claim
130 words
A THICKNESS GAUGE COMPRISING A GAMMA-RAY SOURCE, AN ENERGY-SENSITIVE GAMMA-RAY DETECTOR WHEREIN THE AMPLITUDE OF THE OUTPUT OF THE DETECTOR VARIES WITH THE ENERGY OF THE INPUT, MEANS MOUNTING SAID SOURCE AND SAID DETECTOR SUCH THAT SAID SOURCE MAY BE PLACED CLOSE TO A SURFACE AREA AND SUCH THAT SAID DETECTOR IS DIRECTLY EXPOSED BOTH TO SAID SOURCE AND TO SAID SURFACE AREA, AND ELECTRONIC CIRCUIT MEANS COMPRISING A SINGLE-CHANNEL PULSE-AMPLITUDE ANALYZER, SAID ANALYZER BEING ADJUSTABLE TO BLOCK MOST OF THE PULSES DUE TO DIRECT EXCITATION OF SAID DETECTOR AND TO PASS PULSES WHICH ARE DERIVED FROM GAMMA-RAYS BACK-SCATTERED FROM SAID SURFACE AREA, AND A RATE-METER FOR INDICATING THE COUNT-RATE OF THOSE PULSES AT THE OUTPUT OF THE DETECTOR WHICH ARE DERIVED SOLELY FROM GAMMA-RAYS BACK-SCATTERED FROM SAID SURFACE AREA.
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) | 1966-02-04 | 1966-08-06 | 1967-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-04 | 1970-08-06 | 1971-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-04 | 1974-08-06 | 1975-02-05 | $7700.00 | Window Closed / Lapsed |