Patent US3252087A successfully refreshed from Google Patents.
US3252087A
Expired / Lapsed
US
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Method and apparatus for identifying wires
Assignee: Marine Electric Corp
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Filing: 1961-06-15
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Granted: 1966-05-17
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Expires: 1981-06-15
Abstract
No abstract record available.
Inventors
- 👤 Harry G Parke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:41
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/50; G01R31/58; G01R31/60; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49004
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A PORTABLE DEVICE FOR IDENTIFYING CONDUCTORS OF A MULTICONDUCTOR CABLE COMPRISING A TRANSMITTING UNIT INCLUDING MEANS FOR GENERATING A PLURALITY OF ELECTRICAL POTENTIALS OF DIFFERENT FREQUENCIES AND DIFFERENT LEVELS, SAID UNIT HAVING A PLURALITY OF OUTPUTS FOR CONNECTION TO THE CONDUCTORS TO BE IDENTIFIED, EACH OUTPUT HAVING AN OUTPUT SIGNAL POTENTIAL COMPOSED OF AT LEAST TWO FREQUENCIES AND EACH OUTPUT SIGNAL POTENTIAL DIFFERING FROM ANOTHER IN AT LEAST ONE LEVEL OF VOLTAGE OF ONE OF SAID FREQUENCIES, A METERING UNIT FOR CONNECTION TO THE CONDUCTORS AT A POINT REMOTE FROM SAID TRANSMITTING UNIT, SAID METERING UNIT INCLUDING FILTER MEANS FOR SEPARATING SAID DIFFERENT FREQUENCIES OF SAID OUTPUT SIGNALS AND INDICATING MEANS FOR DETERMINATION OF THE VOLTAGE LEVELS AT DIFFERENT FREQUENCY OF SAID FILTERED OUTPUT SIGNALS.
Claim 2
Dependent Claim
125 words
A PORTABLE DEVICE FOR IDENTIFYING CONDUCTORS OF A MULTICONDUCTOR CABLE COMPRISING A TRANSMITTING UNIT INCLUDING MEANS FOR GENERATING A PLURALITY OF ELECTRICAL POTENTIALS OF DIFFERENT FREQUENCIES AND DIFFERENT LEVELS, SAID UNIT HAVING A PLURALITY OF OUTPUTS FOR CONNECTION TO THE CONDUCTORS TO BE IDENTIFIED, EACH OUTPUT HAVING AN OUTPUT SIGNAL POTENTIAL COMPOSED OF AT LEAST TWO FREQUENCIES AND EACH OUTPUT SIGNAL POTENTIAL DIFFERING FROM ANOTHER IN AT LEAST ONE LEVEL OF VOLTAGE OF ONE OF SAID FREQUENCIES, A METERING UNIT FOR CONNECTION TO THE CONDUCTORS AT A POINT REMOTE FROM SAID TRANSMITTING UNIT, SAID METERING UNIT INCLUDING FILTER MEANS FOR SEPARATING SAID DIFFERENT FREQUENCIES OF SAID OUTPUT SIGNALS AND INDICATING MEANS FOR DETERMINATION OF THE VOLTAGE LEVELS AT DIFFERENT FREQUENCY OF SAID FILTERED OUTPUT SIGNALS.
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) | 1969-05-16 | 1969-11-15 | 1970-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-16 | 1973-11-15 | 1974-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-16 | 1977-11-15 | 1978-05-17 | $7700.00 | Window Closed / Lapsed |