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Patent US3286131A successfully refreshed from Google Patents.
US3286131A
Expired / Lapsed
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Capacitor-operated scr line fault detector
Assignee: Ideal Industries Inc
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Filing: 1964-07-13
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Granted: 1966-11-15
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Expires: 1984-07-13
Abstract
No abstract record available.
Inventors
- 👤 Thomas E Myers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:07
CPC Classifications
H; H02; H02H; H02H3/00; H02H3/24; H02H1/00; H02H1/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
IN A CIRCUIT FOR USE IN DETECTING POWER INTERRUPTION, A SOURCE OF ELECTRIC POWER, A RECTIFIER HAVING AN ANODE CATHODE AND GATE, A CONTROL ELEMENT HAVING AN OPERATING COIL, A CAPACITOR IN SERIES WITH SAID COIL, ANODE AND CATHODE, SAID CAPACITOR BEING CONNECTED TO SAID POWER SOURCE IN A MANNER TO BE CHARGED THEREBY DURING NORMAL OPERATION, AND BIASING MEANS CONNECTED TO SAID GATE AND POWER SOURCE TO NORMALLY MAINTAIN SAID RECTIFIER IN A CUT-OFF CONDITION INCLUDING A RESISTOR CONNECTED BETWEEN SAID GATE AND ONE SIDE OF SAID POWER SOURCE AND A SECOND RESISTOR CONNECTED BETWEEN SAID GATE AND THE OTHER SIDE OF SAID POWER SOURCE, AN INTERRUPTION IN POWER REMOVING THE BIAS AND PERMITTING SAID CAPACITOR TO DISCHARGE THROUGH SAID RECTIFIER AND COIL TO OPERATE SAID CONTROL ELEMENT.
Claim 2
Dependent Claim
129 words
IN A CIRCUIT FOR USE IN DETECTING POWER INTERRUPTION, A SOURCE OF ELECTRIC POWER, A RECTIFIER HAVING AN ANODE CATHODE AND GATE, A CONTROL ELEMENT HAVING AN OPERATING COIL, A CAPACITOR IN SERIES WITH SAID COIL, ANODE AND CATHODE, SAID CAPACITOR BEING CONNECTED TO SAID POWER SOURCE IN A MANNER TO BE CHARGED THEREBY DURING NORMAL OPERATION, AND BIASING MEANS CONNECTED TO SAID GATE AND POWER SOURCE TO NORMALLY MAINTAIN SAID RECTIFIER IN A CUT-OFF CONDITION INCLUDING A RESISTOR CONNECTED BETWEEN SAID GATE AND ONE SIDE OF SAID POWER SOURCE AND A SECOND RESISTOR CONNECTED BETWEEN SAID GATE AND THE OTHER SIDE OF SAID POWER SOURCE, AN INTERRUPTION IN POWER REMOVING THE BIAS AND PERMITTING SAID CAPACITOR TO DISCHARGE THROUGH SAID RECTIFIER AND COIL TO OPERATE SAID CONTROL ELEMENT.
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) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |