Patent US3356940A successfully refreshed from Google Patents.
US3356940A
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Method and apparatus for locating a broken conductor in a cable by vibrating a section of the cable
Assignee: Schlumberger Technology Corp
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Filing: 1966-05-05
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Granted: 1967-12-05
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Expires: 1986-05-05
Abstract
No abstract record available.
Inventors
- 👤 Frentz George E La
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:14
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/08; G01R31/081; G01R31/083
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
THE METHOD OF LOCATING A BREAK IN A CONDUCTOR IN A CABLE HAVING AT LEAST TWO CONDUCTORS, COMPRISING THE STEPS OF: CONNECTING THE CONDUCTORS TO FORM AN ELECTRICAL CIRCUIT; APPLYING A VOLTAGE TO THE CIRCUIT; MOVING THE CABLE AXIALLY RELATIVE TO VIBRATION MEANS WHILE VIBRATING A SECTION OF THE CABLE WITH SUCH VIBRATION MEANS TO VARY THE SPACING BETWEEN THE CONDUCTORS AT THE POINT OF VIBRATION THEREBY PRODUCING VARIATIONS IN AN ELECTRICAL PARAMETER OF THE CIRCUIT; MONITORING SAID VARIATIONS IN SAID ELECTRICAL PARAMETER DURING THE RELATIVE MOVEMENT; AND DETECTING A CHANGE IN THE MONITORED VARIATIONS AS AN INDICATION OF THE LOCATION OF A BREAK.
Claim 2
Independent Claim
104 words
THE METHOD OF LOCATING A BREAK IN A CONDUCTOR IN A CABLE HAVING AT LEAST TWO CONDUCTORS, COMPRISING THE STEPS OF: CONNECTING THE CONDUCTORS TO FORM AN ELECTRICAL CIRCUIT; APPLYING A VOLTAGE TO THE CIRCUIT; MOVING THE CABLE AXIALLY RELATIVE TO VIBRATION MEANS WHILE VIBRATING A SECTION OF THE CABLE WITH SUCH VIBRATION MEANS TO VARY THE SPACING BETWEEN THE CONDUCTORS AT THE POINT OF VIBRATION THEREBY PRODUCING VARIATIONS IN AN ELECTRICAL PARAMETER OF THE CIRCUIT; MONITORING SAID VARIATIONS IN SAID ELECTRICAL PARAMETER DURING THE RELATIVE MOVEMENT; AND DETECTING A CHANGE IN THE MONITORED VARIATIONS AS AN INDICATION OF THE LOCATION OF A BREAK.
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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) | 1970-12-04 | 1971-06-05 | 1971-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-04 | 1975-06-05 | 1975-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-04 | 1979-06-05 | 1979-12-05 | $7700.00 | Window Closed / Lapsed |