Patent US3281674A successfully refreshed from Google Patents.
US3281674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Echo ranging of faulty coil sections in coil-loaded cables utilizing damped oscillations
Assignee: Kieler Howaldtswerke AG
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Filing: 1965-12-22
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Granted: 1966-10-25
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Expires: 1985-12-22
Abstract
No abstract record available.
Inventors
- 👤 Landgraf Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:50
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/08; G01R31/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A METHOD OF ECHO RANGING OF FAULTY COIL SECTIONS IN COIL-LOADED CABLES, COMPRISING THE STEPS OF (A) GENERATING PULSES IN THE FORM OF DAMPED SINUSOIDAL OSCILLATIONS HAVING A RELATIVELY LIMITED FREQUENCY SPECTRUM, THE FREQUENCY SPECTRUM OF SAID PULSES BEING LIMITED APPROXIMATELY TO THE RANGE OF BANDWIDTH OF THE COIL-LOADED CABLE; (B) APPLYING SAID PULSES TO SAID CABLE WHEREBY THE SAME PASS THE COILS THEREOF AND ARE REFLECTED BY FAULTS IN THE CABLE OR IN THE COILS, AND (C) DETERMINING THE POSITION OF THE FAULTS FROM THE REFLECTED PULSES.
Claim 2
Independent Claim
88 words
A METHOD OF ECHO RANGING OF FAULTY COIL SECTIONS IN COIL-LOADED CABLES, COMPRISING THE STEPS OF (A) GENERATING PULSES IN THE FORM OF DAMPED SINUSOIDAL OSCILLATIONS HAVING A RELATIVELY LIMITED FREQUENCY SPECTRUM, THE FREQUENCY SPECTRUM OF SAID PULSES BEING LIMITED APPROXIMATELY TO THE RANGE OF BANDWIDTH OF THE COIL-LOADED CABLE; (B) APPLYING SAID PULSES TO SAID CABLE WHEREBY THE SAME PASS THE COILS THEREOF AND ARE REFLECTED BY FAULTS IN THE CABLE OR IN THE COILS, AND (C) DETERMINING THE POSITION OF THE FAULTS FROM THE REFLECTED PULSES.
References Cited (Backward Citations)
GB754200A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |