Patent US3077555A successfully refreshed from Google Patents.
US3077555A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric motor
Assignee: Superior Electric Co
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Filing: 1958-07-09
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Granted: 1963-02-12
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Expires: 1978-07-09
Abstract
No abstract record available.
Inventors
- 👤 Gustav O Fredrickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:58
CPC Classifications
H; H02; H02K; H02K25/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
204 words
A DRIVING UNIT COMPRISING AN ELECTRIC MOTOR HAVING A SHAFT, TWO ANNULAR END CAPS MOUNTED AXIALLY SPACED ON THE SHAFT, EACH BEING MAGNETICALLY POLARIZED WITH THE POLARITY OF ONE BEING DIFFERENT THAN THE OTHER, THE PERIPHERY OF THE END CAPS BEING FORMED TO PROVIDE EVENLY SPACED TEETH, A STATOR HAVING AT LEAST EIGHT POLES EVENLY SPACED ABOUT AND RADIALLY ALIGNED WITH THE END CAPS, THE PERIPHERY OF THE POLES BEING FORMED WITH EVENLY SPACED TEETH, A WINDING FOR MAGNETIZING EACH POLE WITH ALTERNATE POLE WINDINGS BEING SERIALLY CONNECTED TO FORM TWO GROUPS OF WINDINGS, THE POLES OF EACH GROUP OF WINDINGS FORMING TWO SETS OF OPPOSITELY POSITIONED POLES OF UNLIKE POLARITY WITH THE POLES OF EACH SET BEING ALIKE, AND AT LEAST A THREE POSITION SWITCH MEANS CONNECTIBLE TO A SOURCE OF UNIDIRECTIONAL CURRENT AND TO THE WINDINGS FOR ENERGIZING THE WINDINGS OF ONE GROUP WITH UNIDIRECTIONAL CURRENT AT ONE POSITION OF THE SWITCH MEANS, AT A SECOND POSITION OF THE SWITCH MEANS MAINTAINING THE ONE GROUP ENERGIZED AND ENERGIZING THE OTHER GROUP WITH UNIDIRECTIONAL CURRENT AND AT A THIRD POSITION OF THE SWITCH MEANS DEENERGIZING THE ONE GROUP OF WINDINGS WHILE MAINTAINING THE OTHER GROUP ENERGIZED TO THEREBY ADVANCE THE SHAFT TWO INCREMENTS.
Claim 2
Dependent Claim
204 words
A DRIVING UNIT COMPRISING AN ELECTRIC MOTOR HAVING A SHAFT, TWO ANNULAR END CAPS MOUNTED AXIALLY SPACED ON THE SHAFT, EACH BEING MAGNETICALLY POLARIZED WITH THE POLARITY OF ONE BEING DIFFERENT THAN THE OTHER, THE PERIPHERY OF THE END CAPS BEING FORMED TO PROVIDE EVENLY SPACED TEETH, A STATOR HAVING AT LEAST EIGHT POLES EVENLY SPACED ABOUT AND RADIALLY ALIGNED WITH THE END CAPS, THE PERIPHERY OF THE POLES BEING FORMED WITH EVENLY SPACED TEETH, A WINDING FOR MAGNETIZING EACH POLE WITH ALTERNATE POLE WINDINGS BEING SERIALLY CONNECTED TO FORM TWO GROUPS OF WINDINGS, THE POLES OF EACH GROUP OF WINDINGS FORMING TWO SETS OF OPPOSITELY POSITIONED POLES OF UNLIKE POLARITY WITH THE POLES OF EACH SET BEING ALIKE, AND AT LEAST A THREE POSITION SWITCH MEANS CONNECTIBLE TO A SOURCE OF UNIDIRECTIONAL CURRENT AND TO THE WINDINGS FOR ENERGIZING THE WINDINGS OF ONE GROUP WITH UNIDIRECTIONAL CURRENT AT ONE POSITION OF THE SWITCH MEANS, AT A SECOND POSITION OF THE SWITCH MEANS MAINTAINING THE ONE GROUP ENERGIZED AND ENERGIZING THE OTHER GROUP WITH UNIDIRECTIONAL CURRENT AND AT A THIRD POSITION OF THE SWITCH MEANS DEENERGIZING THE ONE GROUP OF WINDINGS WHILE MAINTAINING THE OTHER GROUP ENERGIZED TO THEREBY ADVANCE THE SHAFT TWO INCREMENTS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-11 | 1966-08-13 | 1967-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-11 | 1970-08-13 | 1971-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-11 | 1974-08-13 | 1975-02-12 | $7700.00 | Window Closed / Lapsed |