US3247382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of locating leaks in multijacketed cable sheaths with radioactive gases
Assignee: AT&T Inc
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Filing: 1962-09-04
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Granted: 1966-04-19
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Expires: 1982-09-04
Abstract
No abstract record available.
Inventors
- 👤 Luther K Schneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:58
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/02; G01M3/04; G01M3/20; G01M3/22; G01M3/221
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A METHOD OF LOCATING HOLES IN AN INNER SHEATH OF A MULTIJACKETED CABLE WHICH COMPRISES THE STEPS OF: FILLING AN INNER SHEATH THAT NORMALLY PROVIDES COMPLETE SHIELDING FOR RADIOACTIVE GAS CONTAINED WITHIN THE INNER SHEATH WITH A RADIOACTIVE GAS UNDER A PREDETERMINED PRESSURE SO THAT RADIOACTIVE GAS WILL ESCAPE THROUGH A HOLE IN THE INNER SHEATH, FLOWING A NONRADIOACTIVE GAS ACROSS THE EXTERIOR OF THE INNER SHEATH SO AS TO DIRECT RADIOACTIVE GAS ESCAPING FROM THE INNER SHEATH THROUGH A HOLE THEREIN TOWARDS A PREDETERMINED END OF THE CABLE, DETECTING ESCAPING RADIOACTIVE GAS ALONG THE CABLE, AND LOCATING THE POINT AT WHICH RADIOACTIVE GAS IS DETECTED LYING CLOSEST TO THE END OF THE CABLE FROM WHICH THE NONRADIOACTIVE GAS IS DIRECTED ACROSS THE INNER SHEATH.
Claim 2
Independent Claim
125 words
A METHOD OF LOCATING HOLES IN AN INNER SHEATH OF A MULTIJACKETED CABLE WHICH COMPRISES THE STEPS OF: FILLING AN INNER SHEATH THAT NORMALLY PROVIDES COMPLETE SHIELDING FOR RADIOACTIVE GAS CONTAINED WITHIN THE INNER SHEATH WITH A RADIOACTIVE GAS UNDER A PREDETERMINED PRESSURE SO THAT RADIOACTIVE GAS WILL ESCAPE THROUGH A HOLE IN THE INNER SHEATH, FLOWING A NONRADIOACTIVE GAS ACROSS THE EXTERIOR OF THE INNER SHEATH SO AS TO DIRECT RADIOACTIVE GAS ESCAPING FROM THE INNER SHEATH THROUGH A HOLE THEREIN TOWARDS A PREDETERMINED END OF THE CABLE, DETECTING ESCAPING RADIOACTIVE GAS ALONG THE CABLE, AND LOCATING THE POINT AT WHICH RADIOACTIVE GAS IS DETECTED LYING CLOSEST TO THE END OF THE CABLE FROM WHICH THE NONRADIOACTIVE GAS IS DIRECTED ACROSS THE INNER SHEATH.
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) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |