Patent US3293465A successfully refreshed from Google Patents.
US3293465A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Current limit circuit
Assignee: Reliance Electric and Engineering Co
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Filing: 1963-01-07
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Granted: 1966-12-20
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Expires: 1983-01-07
Abstract
No abstract record available.
Inventors
- 👤 John R Zeller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:07
CPC Classifications
H; H02; H02P; H02P29/00; H02P29/0016; H02P29/0027
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A CONTROL CIRCUIT COMPRISING IN COMBINATION, A LOAD COIL, MEANS TO ESTABLISH A FEEDBACK VOLTAGE, MEANS CONNECTED TO VARIABLY ENERGIZE SAID COIL IN ACCORDANCE WITH SAID FEEDBACK VOLTAGE, MEANS TO ESTABLISH A CURRENT LIMIT VOLTAGE SIGNAL IN ACCORDANCE WITH THE ENERGIZATION OF SAID LOAD COIL, AT LEAST ONE DIODE RECTIFIER, LOOP CIRCUIT MEANS CONNECTING SAID CONTROL VOLTAGE AND CURRENT LIMIT VOLTAGE SIGNAL IN SERIES WITH SAID DIODE RECTIFIER WITH SAID DIODE RECTIFIER BEING POLED TO CONDUCT CURRENT IN A DIRECTION FOR A VOLTAGE DROP ADDITIVE TO SAID FEEDBACK VOLTAGE, AND SAID DIODE RECTIFIER CONDUCTING UPON THE VOLTAGE APPLIED THERETO FROM SAID LOOP CIRCUIT MEANS EXCEEDING THE FORWARD VOLTAGE DROP OF SAID DIODE RECTIFIER TO CAUSE CURRENT FLOW THROUGH SAID LOOP CIRCUIT MEANS TO EFFECTIVELY INCREASE SAID FEEDBACK VOLTAGE AND THUS LIMIT THE ENERGIZATION TO SAID COIL.
Claim 2
Dependent Claim
136 words
A CONTROL CIRCUIT COMPRISING IN COMBINATION, A LOAD COIL, MEANS TO ESTABLISH A FEEDBACK VOLTAGE, MEANS CONNECTED TO VARIABLY ENERGIZE SAID COIL IN ACCORDANCE WITH SAID FEEDBACK VOLTAGE, MEANS TO ESTABLISH A CURRENT LIMIT VOLTAGE SIGNAL IN ACCORDANCE WITH THE ENERGIZATION OF SAID LOAD COIL, AT LEAST ONE DIODE RECTIFIER, LOOP CIRCUIT MEANS CONNECTING SAID CONTROL VOLTAGE AND CURRENT LIMIT VOLTAGE SIGNAL IN SERIES WITH SAID DIODE RECTIFIER WITH SAID DIODE RECTIFIER BEING POLED TO CONDUCT CURRENT IN A DIRECTION FOR A VOLTAGE DROP ADDITIVE TO SAID FEEDBACK VOLTAGE, AND SAID DIODE RECTIFIER CONDUCTING UPON THE VOLTAGE APPLIED THERETO FROM SAID LOOP CIRCUIT MEANS EXCEEDING THE FORWARD VOLTAGE DROP OF SAID DIODE RECTIFIER TO CAUSE CURRENT FLOW THROUGH SAID LOOP CIRCUIT MEANS TO EFFECTIVELY INCREASE SAID FEEDBACK VOLTAGE AND THUS LIMIT THE ENERGIZATION TO SAID COIL.
References Cited (Backward Citations)
US2888633A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |