Patent US3248646A successfully refreshed from Google Patents.
US3248646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Location of cable faults by comparing a section of the faulted cable with a part of the section
Assignee: BARCLAYSAMERICAN/BUSINESS CREDIT Inc
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Filing: 1962-07-19
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Granted: 1966-04-26
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Expires: 1982-07-19
Abstract
No abstract record available.
Inventors
- 👤 John A Brazee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:30
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
131 words
IN THE LOCATION OF A CABLE FAULT BY DETERMINING THE DISTANCE OF THE FAULT FROM A KNOWN LOCATION ALONG SAID CABLE, SAID FAULT BEING IN THE FORM OF A BREAK OR RELATIVELY HIGH SERIES RESISTANCE IN A FAULTED CONDUCTOR EXTENDING TOGETHER WITH A GOOD CONDUCTOR BETWEEN THE FAULT AND A FIRST LOCATION, THE STEPS OF A. INTERRUPTING SAID FAULTED CONDUCTOR AT AN INTERMEDIATE LOCATION BETWEEN SAID FIRST LOCATION AND SAID FAULT, SO THAT A FIRST PORTION OF SAID FAULTED CONDUCTOR EXTENDS FOR A KNOWN DISTANCE BETWEEN SAID FIRST AND INTERMEDIATE LOCATIONS AND A SECOND PORTION OF SAID FAULTED CONDUCTOR EXTENDS FOR AN UNKNOWN DISTANCE BETWEEN SAID INTERMEDIATE LOCATION AND SAID FAULT, B. AT SAID INTERMEDIATE LOCATION (1) CONNECTING TWO SERIES-CONNECTED RELATIVELY INVERSELY-VARIABLE IMPEDANCE ELEMENTS BETWEEN SAID FIRST AND SECOND CONDUCTOR PORTIONS,
References Cited (Backward Citations)
US3004216A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |