US3195029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Series motor control
Assignee: Texas Instruments Inc
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Filing: 1962-09-10
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Granted: 1965-07-13
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Expires: 1982-09-10
Abstract
No abstract record available.
Inventors
- 👤 Benjamin F Gilbreath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:42
CPC Classifications
H; H02; H02P; H02P7/00; H02P7/06; H02P7/18; H02P7/24; H02P7/28; H02P7/285; H02P7/292; H02P7/293
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A CONTROL CIRCUIT FOR A MOTOR WHEREIN A FIELD WINDING AND AN ARMATURE WINDING ARE CONNECTED IN SERIES COMPRISING: (A) A CONTROLLED RECTIFIER HAVING ANODE, CATHODE AND GATE ELECTRODES, (B) A PAIR OF TERMINALS ADAPTED TO BE CONNECTED TO A SOURCE OF FULL-WAVE RECTIFIED ALTERNATING CURRENT, (C) MEANS CONNECTING THE MOTOR IN A SERIES CIRCUIT WITH THE ANODE AND CATHODE OF THE CONTROLLED RECTIFIER AND FOR CONNECTING THE SERIES CIRCUIT ACROSS THE PAIR OF TERMINALS, THE ANODE BEING ADJACENT THE ARMATURE WINDING, (D) RESISTANCE MEANS AND CAPACITOR CONNECTED ACROSS THE ANODE AND CATHODE ELECTRODES, (E) A RESISTOR AND A ZENER DIODE CONNECTED IN SERIES ACROSS THE PAIR OF TERMINALS, AND (F) A UNIJUNCTION TRANSISTOR HAVING ONE BASE CONNECTED TO THE JUNCTURE OF THE RESISTOR AND ZENER DIODE AND HAVING A SECOND BASE CONNECTED TO THE GATE ELECTRODE, THE EMITTER OF THE TRANSISTOR BEING CONNECTED TO THE JUNCTURE OF THE CAPACITOR AND THE RESISTANCE MEANS.
Claim 2
Dependent Claim
154 words
A CONTROL CIRCUIT FOR A MOTOR WHEREIN A FIELD WINDING AND AN ARMATURE WINDING ARE CONNECTED IN SERIES COMPRISING: (A) A CONTROLLED RECTIFIER HAVING ANODE, CATHODE AND GATE ELECTRODES, (B) A PAIR OF TERMINALS ADAPTED TO BE CONNECTED TO A SOURCE OF FULL-WAVE RECTIFIED ALTERNATING CURRENT, (C) MEANS CONNECTING THE MOTOR IN A SERIES CIRCUIT WITH THE ANODE AND CATHODE OF THE CONTROLLED RECTIFIER AND FOR CONNECTING THE SERIES CIRCUIT ACROSS THE PAIR OF TERMINALS, THE ANODE BEING ADJACENT THE ARMATURE WINDING, (D) RESISTANCE MEANS AND CAPACITOR CONNECTED ACROSS THE ANODE AND CATHODE ELECTRODES, (E) A RESISTOR AND A ZENER DIODE CONNECTED IN SERIES ACROSS THE PAIR OF TERMINALS, AND (F) A UNIJUNCTION TRANSISTOR HAVING ONE BASE CONNECTED TO THE JUNCTURE OF THE RESISTOR AND ZENER DIODE AND HAVING A SECOND BASE CONNECTED TO THE GATE ELECTRODE, THE EMITTER OF THE TRANSISTOR BEING CONNECTED TO THE JUNCTURE OF THE CAPACITOR AND THE RESISTANCE MEANS.
References Cited (Backward Citations)
US3095534A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |