US3211981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor control system with direct current braking
Assignee: Staco Inc
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Filing: 1962-01-15
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Granted: 1965-10-12
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Expires: 1982-01-15
Abstract
No abstract record available.
Inventors
- 👤 Stanley R Jordan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:23
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/12; G05F1/24; G05F1/247
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
223 words
IN A CONTROL ASSEMBLY, A MOTOR HAVING A ROTOR AND A STATOR, A FIRST STATOR WINDING, THE FIRST STATOR WINDING BEING CONNECTED TO A SOURCE OF ALTERNATING CURRENT ENERGY, A SECOND STATOR WINDING DISPOSED IN ELECTRICAL ANGULAR RELATIONSHIP WITH RESPECT TO THE FIRST STATOR WINDING, THE SECOND STATOR WINDING HAVING A FIRST CONNECTOR LEAD AT ONE END THEREOF AND A SECOND CONNECTOR LEAD AT THE OTHER END THEREOF, A CHOKE CONNECTED TO THE FIRST CONNECTOR LEAD OF THE SECOND STATOR WINDING, RESISTANCE MEANS CONNECTED IN SERIES WITH THE CHOKE, AN AMPLIFIER INCLUDING A PLURALITY OF ELECTRON DISCHARGE DEVICES, ONE OF THE ELECTRON DISCHARGE DEVICES HAVING AN ANODE CONNECTED TO SAID FIRST CONNECTOR LEAD OF THE SECOND STATOR WINDING, THE SAID ELECTRON DISCHARGE DEVICE ALSO BEING PROVIDED WITH A CATHODE, DIRECT CURRENT POTENTIAL MEANS CONNECTING SAID CATHODE TO SAID SECOND CONNECTOR LEAD OF THE SECOND STATOR WINDING, SAID DIRECT CURRENT POTENTIAL MEANS ALSO BEING CONNECTED TO SAID RESISTANCE MEANS, THE DIRECT CURRENT POTENTIAL MEANS PROVIDING A POSITIVE VOLTAGE TO THE SECOND CONNECTOR LEAD AND TO THE RESISTANCE MEANS WITH RESPECT TO THE CATHODE WITH THE POSITIVE VOLTAGE AT THE RESISTANCE MEANS BEING GREATER THAN THE POSITIVE VOLTAGE AT THE SECOND CONNECTOR LEAD SO THAT DIRECT CURRENT FLOWS THROUGH THE SECOND STATOR WINDING WHEN THE SAID ELECTRON DISCHARGE DEVICE IS NOT CONDUCTING ALTERNATING CURRENT THERETHROUGH.
Claim 2
Dependent Claim
223 words
IN A CONTROL ASSEMBLY, A MOTOR HAVING A ROTOR AND A STATOR, A FIRST STATOR WINDING, THE FIRST STATOR WINDING BEING CONNECTED TO A SOURCE OF ALTERNATING CURRENT ENERGY, A SECOND STATOR WINDING DISPOSED IN ELECTRICAL ANGULAR RELATIONSHIP WITH RESPECT TO THE FIRST STATOR WINDING, THE SECOND STATOR WINDING HAVING A FIRST CONNECTOR LEAD AT ONE END THEREOF AND A SECOND CONNECTOR LEAD AT THE OTHER END THEREOF, A CHOKE CONNECTED TO THE FIRST CONNECTOR LEAD OF THE SECOND STATOR WINDING, RESISTANCE MEANS CONNECTED IN SERIES WITH THE CHOKE, AN AMPLIFIER INCLUDING A PLURALITY OF ELECTRON DISCHARGE DEVICES, ONE OF THE ELECTRON DISCHARGE DEVICES HAVING AN ANODE CONNECTED TO SAID FIRST CONNECTOR LEAD OF THE SECOND STATOR WINDING, THE SAID ELECTRON DISCHARGE DEVICE ALSO BEING PROVIDED WITH A CATHODE, DIRECT CURRENT POTENTIAL MEANS CONNECTING SAID CATHODE TO SAID SECOND CONNECTOR LEAD OF THE SECOND STATOR WINDING, SAID DIRECT CURRENT POTENTIAL MEANS ALSO BEING CONNECTED TO SAID RESISTANCE MEANS, THE DIRECT CURRENT POTENTIAL MEANS PROVIDING A POSITIVE VOLTAGE TO THE SECOND CONNECTOR LEAD AND TO THE RESISTANCE MEANS WITH RESPECT TO THE CATHODE WITH THE POSITIVE VOLTAGE AT THE RESISTANCE MEANS BEING GREATER THAN THE POSITIVE VOLTAGE AT THE SECOND CONNECTOR LEAD SO THAT DIRECT CURRENT FLOWS THROUGH THE SECOND STATOR WINDING WHEN THE SAID ELECTRON DISCHARGE DEVICE IS NOT CONDUCTING ALTERNATING CURRENT THERETHROUGH.
References Cited (Backward Citations)
US2508639A
Cited
US2906937A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |