Patent US4023154A successfully refreshed from Google Patents.
US4023154A
Expired / Lapsed
US
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Apparatus for detecting location of metal cable failure
Assignee: Individual
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Filing: 1976-04-09
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Granted: 1977-05-10
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Expires: 1996-04-09
Abstract
Abstract An apparatus for determining in the field where breaks or other failures in metal cable occur is provided having a dual electrical pulse generator means attached to a gate assembly wherein one generator means will send an electrical pulse down the cable and back to one of the gates and wherein the other generator sends pulses of same frequency but of a known delay to the same gate. Attached to the gates are means for detecting when pulses from both sources arrive simultaneously at one of the gates.
Inventors
- 👤 Willie George Comeaux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:57
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/08; G01R31/081; G01R31/083
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
126 words
An apparatus for determining where a cable failure occurs which comprises: a. an oscillator; b. a pulse generator connected in series with said oscillator and said cable; c. a gate assembly connected in series with said pulse generator and said cable to receive pulses which have been sent down said cable by said pulse generator and which have been reflected back toward said pulse generator; d. a second pulse generator connected in series to said gate assembly; e. a pulse delay means connected in series between said oscillator and said second pulse generator; and f. a detection means connected in series with said gate assembly for detecting when said pulses being reflected and said pulses from said second pulse generator arrive simultaneously at said gate assembly.
Claim 2
Independent Claim
126 words
An apparatus for determining where a cable failure occurs which comprises: a. an oscillator; b. a pulse generator connected in series with said oscillator and said cable; c. a gate assembly connected in series with said pulse generator and said cable to receive pulses which have been sent down said cable by said pulse generator and which have been reflected back toward said pulse generator; d. a second pulse generator connected in series to said gate assembly; e. a pulse delay means connected in series between said oscillator and said second pulse generator; and f. a detection means connected in series with said gate assembly for detecting when said pulses being reflected and said pulses from said second pulse generator arrive simultaneously at said gate assembly.
Claim 3
Dependent Claim
43 words
An apparatus according to claim 1 wherein said detection means comprises a lamp driver connected to a lamp, said lamp driver broadening said pulses coming from said assembly a sufficient amount to light said lamp when said pulses arrive at said assembly simultaneously.
Claim 4
Dependent Claim
33 words
An apparatus according to claim 1 wherein said detection means comprises an audio generator connected to a sound emitting device said audio generator being of sufficient power to drive said sound emitting device.
Claim 5
Dependent Claim
21 words
An apparatus according to claim 1 wherein a line driver is connected in series between said pulse generator and said cable.
Claim 6
Dependent Claim
55 words
An apparatus according to claim 1 wherein gate assembly comprises a. a first nand gate; b. a pulse inverter connected in series before a second nand gate, said first nand gate being connected in parallel with said inverter and second nand gate, said second pulse generator connected separately in series with both of said gates.
Claim 7
Dependent Claim
43 words
An apparatus according to claim 5 wherein said detection means comprises a lamp driver connected to a lamp, said lamp driver broadening said pulses coming from said assembly a sufficient amount to light said lamp when said pulses arrive at said assembly simultaneously.
Claim 8
Dependent Claim
33 words
An apparatus according to claim 5 wherein said detection means comprises an audio generator connected to a sound emitting device said audio generator being of sufficient power to drive said sound emitting device.
Claim 9
Dependent Claim
21 words
An apparatus according to claim 5 wherein a line driver is connected in series between said pulse generator and said cable.
Claim 10
Dependent Claim
43 words
An apparatus according to claim 1 wherein an amplifier assembly comprising a negative pulse amplifier and a positive pulse amplifier connected in parallel and which receive and amplify said reflected pulses from said cable before sending said amplifier pulses to said gate assembly.
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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) | 1980-05-09 | 1980-11-08 | 1981-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-09 | 1984-11-08 | 1985-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-09 | 1988-11-08 | 1989-05-10 | $7700.00 | Window Closed / Lapsed |