US3332007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor control circuit with time delay
Assignee: Ling Temco Vought Inc
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Filing: 1964-08-20
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Granted: 1967-07-18
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Expires: 1984-08-20
Abstract
No abstract record available.
Inventors
- 👤 Ray K Livengood
- 👤 Robert N Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:41
CPC Classifications
H; H02; H02P; H02P7/00; H02P7/03; H02P7/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
AN OVERLOAD CONTROL SYSTEM COMPRISING: A SOURCE OF CURRENT, A VARYING LOAD, A SERIES RESISTOR, AN ELECTRON CONTROL DEVICE HAVING AN ELECTRON EMITTINGCOLLECTING CIRCUIT AND A CONTROL CIRCUIT, SAID SOURCE OF CURRENT, SAID LOAD, SAID EMITTING-COLLECTING CIRCUIT AND SAID SERIES RESISTOR BEING SERIALLY CONNECTED, AN AMPLIFIER HAVING AN OUTPUT CIRCUIT AND AN INPUT CIRCUIT, A DELAY CIRCUIT CONNECTED BETWEEN SAID INPUT CIRCUIT OF SAID AMPLIFIER AND SAID SERIES RESISTOR TO APPLY A GRADUALLY INCREASING VOLTAGE TO SAID INPUT IN RESPONSE TO AN ABRUPT INCREASE IN CURRENT THROUGH SAID LOAD, THE OUTPUT CIRCUIT OF SAID AMPLIFIER BEING CONNECTED TO CONTROL CIRCUIT OF SAID ELECTRON CONTROL DEVICE, THE OUTPUT OF SAID AMPLIFIER CHANGING IN RESPONSE TO CHANGE OF VOLTAGE THAT IS APPLIED TO ITS FLOW THROUGH RESULT OF AN ABRUPT INCREASE IN CURRENT FLOW THROUGH SAID LOAD TO DECREASE GRADUALLY THE CONDUCTIVITY OF SAID ELECTRON CONTROL DEVICE, THEREBY, TO DECREASE GRADUALLY THE CURRENT FLOW THROUGH SAID LOAD.
Claim 2
Dependent Claim
155 words
AN OVERLOAD CONTROL SYSTEM COMPRISING: A SOURCE OF CURRENT, A VARYING LOAD, A SERIES RESISTOR, AN ELECTRON CONTROL DEVICE HAVING AN ELECTRON EMITTINGCOLLECTING CIRCUIT AND A CONTROL CIRCUIT, SAID SOURCE OF CURRENT, SAID LOAD, SAID EMITTING-COLLECTING CIRCUIT AND SAID SERIES RESISTOR BEING SERIALLY CONNECTED, AN AMPLIFIER HAVING AN OUTPUT CIRCUIT AND AN INPUT CIRCUIT, A DELAY CIRCUIT CONNECTED BETWEEN SAID INPUT CIRCUIT OF SAID AMPLIFIER AND SAID SERIES RESISTOR TO APPLY A GRADUALLY INCREASING VOLTAGE TO SAID INPUT IN RESPONSE TO AN ABRUPT INCREASE IN CURRENT THROUGH SAID LOAD, THE OUTPUT CIRCUIT OF SAID AMPLIFIER BEING CONNECTED TO CONTROL CIRCUIT OF SAID ELECTRON CONTROL DEVICE, THE OUTPUT OF SAID AMPLIFIER CHANGING IN RESPONSE TO CHANGE OF VOLTAGE THAT IS APPLIED TO ITS FLOW THROUGH RESULT OF AN ABRUPT INCREASE IN CURRENT FLOW THROUGH SAID LOAD TO DECREASE GRADUALLY THE CONDUCTIVITY OF SAID ELECTRON CONTROL DEVICE, THEREBY, TO DECREASE GRADUALLY THE CURRENT FLOW THROUGH SAID LOAD.
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) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |