US3333171A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamoelectric machine including a particular pole face arcuate length and scr fed windings
Assignee: Carrier Corp
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Filing: 1964-11-17
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Granted: 1967-07-25
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Expires: 1984-11-17
Abstract
No abstract record available.
Inventors
- 👤 Platnick David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:25
CPC Classifications
H; H02; H02K; H02K29/00; H02K29/06; H02K29/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
235 words
IN A MOTOR, THE COMBINATION OF A ROTOR HAVING A POLE FACE OF PREDETERMINED ARCUATE LENGTH; A STATOR CIRCUMSCRIBING SAID ROTOR HAVING A SERIES OF INDEPENDENT WINDINGS POSITIONED THEREON, SAID WINDINGS BEING ARRANGED ON SAID STATOR SO THAT THE CIRCUMFERENTIAL DISTANCE BETWEEN ADJACENT WINDINGS IS LESS THAN THE PREDETERMINED ARCUATE LENGTH OF SAID ROTOR POLE FACE WHEREBY AT LEAST ONE OF SAID WINDINGS IS OPPOSITE SAID ROTOR POLE FACE AT ALL ROTATIONAL POSITIONS OF SAID ROTOR; A FIRST SWITCHING DEVICE, A DIODE CONNECTING THE OUTPUT ELECTRODE OF SAID FIRST SWITCHING DEVICE WITH ONE OF SAID WINDINGS; MEANS FOR SENSING ROTOR POSITION ADAPTED AT A FIRST ROTOR POSITION TO RENDER SAID FIRST SWITCHING DEVICE OPERATIVE TO ENERGIZE SAID ONE WINDING, AND MEANS FOR RENDERING SAID FIRST SWITCHING DEVICE INOPERATIVE TO DEENERGIZE SAID ONE WINDING INCLUDING A SECOND SWITCHING DEVICE, A SECOND DIODE CONNECTING THE OUTPUT ELECTRODE OF SAID SECOND SWITCHING DEVICE WITH A SECOND WINDING, SAID SECOND WINDING BEING ADJACENT SAID FIRST WINDING, AND A FIRST CAPACITOR CONNECTING THE OUTPUT ELECTRODE OF SAID FIRST SWITCHING DEVICE TO THE OUTPUT ELECTRODE OF SAID SECOND SWITCHING DEVICE, SAID ROTOR POSITION SENSING MEANS UPON MOVEMENT OF SAID ROTOR TO A SECOND ROTOR POSITION RENDERING SAID SECOND SWITCHING DEVICE OPERATIVE TO ENERGIZE SAID SECOND WINDING AND DISCHARGE SAID FIRST CAPACITOR THROUGH SAID FIRST SWITCHING DEVICE TO REDUCE CURRENT THROUGH SAID FIRST SWITCHING DEVICE TO RENDER SAID FIRST SWITCHING DEVICE INOPERATIVE.
Claim 2
Dependent Claim
235 words
IN A MOTOR, THE COMBINATION OF A ROTOR HAVING A POLE FACE OF PREDETERMINED ARCUATE LENGTH; A STATOR CIRCUMSCRIBING SAID ROTOR HAVING A SERIES OF INDEPENDENT WINDINGS POSITIONED THEREON, SAID WINDINGS BEING ARRANGED ON SAID STATOR SO THAT THE CIRCUMFERENTIAL DISTANCE BETWEEN ADJACENT WINDINGS IS LESS THAN THE PREDETERMINED ARCUATE LENGTH OF SAID ROTOR POLE FACE WHEREBY AT LEAST ONE OF SAID WINDINGS IS OPPOSITE SAID ROTOR POLE FACE AT ALL ROTATIONAL POSITIONS OF SAID ROTOR; A FIRST SWITCHING DEVICE, A DIODE CONNECTING THE OUTPUT ELECTRODE OF SAID FIRST SWITCHING DEVICE WITH ONE OF SAID WINDINGS; MEANS FOR SENSING ROTOR POSITION ADAPTED AT A FIRST ROTOR POSITION TO RENDER SAID FIRST SWITCHING DEVICE OPERATIVE TO ENERGIZE SAID ONE WINDING, AND MEANS FOR RENDERING SAID FIRST SWITCHING DEVICE INOPERATIVE TO DEENERGIZE SAID ONE WINDING INCLUDING A SECOND SWITCHING DEVICE, A SECOND DIODE CONNECTING THE OUTPUT ELECTRODE OF SAID SECOND SWITCHING DEVICE WITH A SECOND WINDING, SAID SECOND WINDING BEING ADJACENT SAID FIRST WINDING, AND A FIRST CAPACITOR CONNECTING THE OUTPUT ELECTRODE OF SAID FIRST SWITCHING DEVICE TO THE OUTPUT ELECTRODE OF SAID SECOND SWITCHING DEVICE, SAID ROTOR POSITION SENSING MEANS UPON MOVEMENT OF SAID ROTOR TO A SECOND ROTOR POSITION RENDERING SAID SECOND SWITCHING DEVICE OPERATIVE TO ENERGIZE SAID SECOND WINDING AND DISCHARGE SAID FIRST CAPACITOR THROUGH SAID FIRST SWITCHING DEVICE TO REDUCE CURRENT THROUGH SAID FIRST SWITCHING DEVICE TO RENDER SAID FIRST SWITCHING DEVICE INOPERATIVE.
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) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |