Patent US3877859A successfully refreshed from Google Patents.
Patent US3131347A successfully refreshed from Google Patents.
US3131347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cable testing system having stressing means for detecting open and short circuits
Assignee: Phillips Petroleum Co
•
Filing: 1961-10-09
•
Granted: 1964-04-28
•
Expires: 1981-10-09
Abstract
No abstract record available.
Inventors
- 👤 Melvin E Brooks
- 👤 Clyde R Chew
- 👤 Carl D Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:45
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/50; G01R31/58; G01R31/59
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
207 words
MEANS FOR TESTING A CABLE COMPRISING A PLURALITY OF CONDUCTORS, COMPRISING MEANS FOR CONNECTING SAID CONDUCTORS IN SERIES IN A BRIDGE CIRCUIT, WHEREBY SAID BRIDGE CIRCUIT IS BALANCED WHEN THERE IS NO DEFECT IN SAID CONDUCTORS, MEANS FOR APPLYING A FIRST ALTERNATING CURRENT POTENTIAL TO SAID BRIDGE CIRCUIT, AN AMPLIFIER FOR THE OUTPUT OF SAID BRIDGE CIRCUIT, THE OUTPUT OF SAID AMPLIFIER BEING CONNECTED TO THE CONTROL GRIDS OF A PAIR OF THYRATRON TUBES, MEANS FOR APPLYING A SECOND ALTERNATING CURRENT POTENTIAL SUBSTANTIALLY IN PHASE WITH SAID FIRST ALTERNATING POTENTIAL THROUGH THE COIL OF A FIRST RELAY TO THE ANODE OF ONE OF SAID TUBES, MEANS FOR APPLYING A THIRD ALTERNATING CURRENT POTENTIAL SUBSTANTIALLY 180* OUT OF PHASE WITH SAID FIRST ALTERNATING CURRENT POTENTIAL THROUGH THE COIL OF A SECOND RELAY TO THE ANODE OF THE OTHER OF THE SAID TUBES, DRIVING MEANS FOR PASSING SAID CABLE THROUGH A TESTING ZONE AND MEANS FOR CONCURRENTLY STRESSING AND BENDING SAID CABLE, MEANS ACTUATED AUTOMATICALLY UPON THE OCCURRENCE OF A SHORT CIRCUIT IN SAID CABLE TO STOP SAID DRIVING MEANS AND ACTUATE A FIRST INDICATOR AND MEANS ACTUATED AUTOMATICALLY UPON THE OCCURRENCE OF AN OPEN CIRCUIT IN SAID CABLE TO STOP SAID DRIVING MEANS AND ACTUATE A SECOND INDICATOR.
Claim 2
Dependent Claim
207 words
MEANS FOR TESTING A CABLE COMPRISING A PLURALITY OF CONDUCTORS, COMPRISING MEANS FOR CONNECTING SAID CONDUCTORS IN SERIES IN A BRIDGE CIRCUIT, WHEREBY SAID BRIDGE CIRCUIT IS BALANCED WHEN THERE IS NO DEFECT IN SAID CONDUCTORS, MEANS FOR APPLYING A FIRST ALTERNATING CURRENT POTENTIAL TO SAID BRIDGE CIRCUIT, AN AMPLIFIER FOR THE OUTPUT OF SAID BRIDGE CIRCUIT, THE OUTPUT OF SAID AMPLIFIER BEING CONNECTED TO THE CONTROL GRIDS OF A PAIR OF THYRATRON TUBES, MEANS FOR APPLYING A SECOND ALTERNATING CURRENT POTENTIAL SUBSTANTIALLY IN PHASE WITH SAID FIRST ALTERNATING POTENTIAL THROUGH THE COIL OF A FIRST RELAY TO THE ANODE OF ONE OF SAID TUBES, MEANS FOR APPLYING A THIRD ALTERNATING CURRENT POTENTIAL SUBSTANTIALLY 180* OUT OF PHASE WITH SAID FIRST ALTERNATING CURRENT POTENTIAL THROUGH THE COIL OF A SECOND RELAY TO THE ANODE OF THE OTHER OF THE SAID TUBES, DRIVING MEANS FOR PASSING SAID CABLE THROUGH A TESTING ZONE AND MEANS FOR CONCURRENTLY STRESSING AND BENDING SAID CABLE, MEANS ACTUATED AUTOMATICALLY UPON THE OCCURRENCE OF A SHORT CIRCUIT IN SAID CABLE TO STOP SAID DRIVING MEANS AND ACTUATE A FIRST INDICATOR AND MEANS ACTUATED AUTOMATICALLY UPON THE OCCURRENCE OF AN OPEN CIRCUIT IN SAID CABLE TO STOP SAID DRIVING MEANS AND ACTUATE A SECOND INDICATOR.
References Cited (Backward Citations)
US2435266A
Cited
US2635135A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |