US3561256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipeline leak detector
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1969-03-28
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Granted: 1971-02-09
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Expires: 1989-03-28
Abstract
Abstract AN APPARATUS FOR THE DETECTION OF PIPELINE LEAKS, IN WHICH AN APPARATUS COMPRISING A SOUND ABSORBENT CANISTER BETWEEN FRONT AND REAR SOUND DETECTORS DESIGNED TO MOVE THROUGH THE PIPELINE, RECORDS THE SOUND GENERATED BY THE ESCAPING FLUID. THE LEAK IS LOCATED AT THE POINT WHEREIN THE RECORDING TRACES, GENERATED BY THE SOUND DETECTORS, INDICATE A SUDDEN CHANGE IN SOUND INTENSITY CAUSED BY THE SOUND ABSORBENT CANISTER COVERING THE LEAK.
Inventors
- 👤 William M Bustin
- 👤 Harry C Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:47
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/005; G01M3/02; G01M3/04; G01M3/24; G01M3/243; G01M3/246
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |