US3133275A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistorized supervisory circuit for transmission lines
Assignee: International Standard Electric Corp
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Filing: 1960-06-02
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Granted: 1964-05-12
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Expires: 1980-06-02
Abstract
No abstract record available.
Inventors
- 👤 Cohrt Eigil
- 👤 Scavenius Jens Erik Bronnum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:52
CPC Classifications
H; H04; H04M; H04M3/00; H04M3/22; H04M3/26; H04M3/28; H04M3/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
175 words
IN A SUPERVISORY SYSTEM FOR SUPERVISING THE CONTINUITY OF A TRANSMISSION LINE, A TWO WINDING RELAY, A POWER SOURCE, MEANS FOR CONNECTING THE SAID WINDINGS IN SERIES AND IN FLUX OPPOSING RELATIONSHIP ACROSS SAID SOURCE, SWITCHING MEANS HAVING AN INPUT CIRCUIT CONNECTED TO SAID LINE AND HAVING AN OUTPUT CIRCUIT CONNECTED TO THE JUNCTION BETWEEN SAID SERIES WINDINGS, SAID SWITCHING MEANS COMPRISING A TRANSISTOR HAVING BASE, EMITTER AND COLLECTOR ELECTRODES INCLUDED IN SAID BASE AND OMITTER ELECTRODES INCLUDED IN SAID INPUT CIRCUIT AND WITH THE SAID COLLECTOR AND EMITTER ELECTRODES INCLUDED IN SAID OUTPUT CIRCUIT, MEANS RESPONSIVE TO THE CONTINUITY AND NONCONTINUITY OF SAID LINE FOR RESPECTIVELY OPERATING AND RESTORING SAID SWITCHING MEANS, MEANS IN THE SAID OUTPUT CIRCUIT FOR CONTROLLING THE QUANTITY OF FLUX GENERATED BY EACH SAID RELAY WINDING TO CAUSE AN UNBALANCE OF FLUX WHEREBY THE RESULTANT GENERATED FLUX OPERATES SAID RELAY WHEN SAID SWITCHING MEANS IS OPERATED AND RESTORES SAID RELAY WHEN SAID SWITCHING MEANS IS UNOPERATED, AND MEANS CONTROLLED BY SAID RELAY FOR INDICATING THE CONTINUITY CONDITION OF SAID LINE.
Claim 2
Dependent Claim
175 words
IN A SUPERVISORY SYSTEM FOR SUPERVISING THE CONTINUITY OF A TRANSMISSION LINE, A TWO WINDING RELAY, A POWER SOURCE, MEANS FOR CONNECTING THE SAID WINDINGS IN SERIES AND IN FLUX OPPOSING RELATIONSHIP ACROSS SAID SOURCE, SWITCHING MEANS HAVING AN INPUT CIRCUIT CONNECTED TO SAID LINE AND HAVING AN OUTPUT CIRCUIT CONNECTED TO THE JUNCTION BETWEEN SAID SERIES WINDINGS, SAID SWITCHING MEANS COMPRISING A TRANSISTOR HAVING BASE, EMITTER AND COLLECTOR ELECTRODES INCLUDED IN SAID BASE AND OMITTER ELECTRODES INCLUDED IN SAID INPUT CIRCUIT AND WITH THE SAID COLLECTOR AND EMITTER ELECTRODES INCLUDED IN SAID OUTPUT CIRCUIT, MEANS RESPONSIVE TO THE CONTINUITY AND NONCONTINUITY OF SAID LINE FOR RESPECTIVELY OPERATING AND RESTORING SAID SWITCHING MEANS, MEANS IN THE SAID OUTPUT CIRCUIT FOR CONTROLLING THE QUANTITY OF FLUX GENERATED BY EACH SAID RELAY WINDING TO CAUSE AN UNBALANCE OF FLUX WHEREBY THE RESULTANT GENERATED FLUX OPERATES SAID RELAY WHEN SAID SWITCHING MEANS IS OPERATED AND RESTORES SAID RELAY WHEN SAID SWITCHING MEANS IS UNOPERATED, AND MEANS CONTROLLED BY SAID RELAY FOR INDICATING THE CONTINUITY CONDITION OF SAID LINE.
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) | 1967-05-12 | 1967-11-11 | 1968-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-12 | 1971-11-11 | 1972-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-12 | 1975-11-11 | 1976-05-12 | $7700.00 | Window Closed / Lapsed |