US2812440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gamma ray wall thickness measuring device
Assignee: Standard Oil Co
•
Filing: 1956-03-29
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Granted: 1957-11-05
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Expires: 1976-03-29
Abstract
No abstract record available.
Inventors
- 👤 Albert M Hartman
- 👤 Le Roy A White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:50
CPC Classifications
G; G01; G01B; G01B15/00; G01B15/02; G01B15/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A DEVICE FOR MEASURING THE THICKNESS OF VESSEL WALLS HAVING PARELLEL SURFACES COMPFISING A SOURCE OF GAMMA RAYS, FRAME MEANS SUPPORTING SAID SOURCE, SHIELD MEANS ON SAID FRAME MEANS DISPOSED BETWEEN THE SOURCE AND THE WALL, FILM MEANS SENSITIVE TO GAMMA RAYS ARRANGED ON THE OTHER SIDE OF THE WALL TO BE MEASURED, A PAIR OF ANGULARLY DISPOSED CHANNELS IN SAID SHIELD MEANS ADAPTED TO PASS GAMMA RADIATION FROM SAID SOURCE THROUGH SAID WALL ONTO SAID FILM, SAID CHANNELS, SAID SOURCE AND SAID FILM BEING DISPOSED IN A FIXED PREDETERMINED ARRAY, THE DISTANCE BETWEEN THE IMAGES OF SAID FILM GIVING A MEASURE OF THE THICKNESS OF SAID WALL.
Claim 2
Independent Claim
108 words
A DEVICE FOR MEASURING THE THICKNESS OF VESSEL WALLS HAVING PARELLEL SURFACES COMPFISING A SOURCE OF GAMMA RAYS, FRAME MEANS SUPPORTING SAID SOURCE, SHIELD MEANS ON SAID FRAME MEANS DISPOSED BETWEEN THE SOURCE AND THE WALL, FILM MEANS SENSITIVE TO GAMMA RAYS ARRANGED ON THE OTHER SIDE OF THE WALL TO BE MEASURED, A PAIR OF ANGULARLY DISPOSED CHANNELS IN SAID SHIELD MEANS ADAPTED TO PASS GAMMA RADIATION FROM SAID SOURCE THROUGH SAID WALL ONTO SAID FILM, SAID CHANNELS, SAID SOURCE AND SAID FILM BEING DISPOSED IN A FIXED PREDETERMINED ARRAY, THE DISTANCE BETWEEN THE IMAGES OF SAID FILM GIVING A MEASURE OF THE THICKNESS OF SAID WALL.
References Cited (Backward Citations)
US2675482A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-04 | 1961-05-06 | 1961-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-04 | 1965-05-06 | 1965-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-04 | 1969-05-06 | 1969-11-05 | $7700.00 | Window Closed / Lapsed |