Patent EP0382353A2 successfully refreshed from Google Patents.
US3221233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single winding, multi-phase, multi-speed induction motors
Assignee: Individual
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Filing: 1962-02-14
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Granted: 1965-11-30
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Expires: 1982-02-14
Abstract
No abstract record available.
Inventors
- 👤 Charles R Cantonwine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:02
CPC Classifications
H; H02; H02K; H02K17/00; H02K17/02; H02K17/12; H02K17/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
205 words
A THREE SPEED A.C. MOTOR COMPRISING A STATOR HAVING A STATOR WINDING THEREON AND A ROTOR HAVING A ROTOR WINDING THEREON, ONE OF SAID WINDINGS HAVING AT LEAST TWO WHOLE POLE WINDING GROUPS PER PHASE ARRANGED FOR CHANGING THE NUMBER OF POLES IN THE RELATION OF 1, 2, AND 3 NUMBER OF POLES, HAVING AT THE SAID 1 NUMBER OF POLES AT LEAS TWO WHOLE POLE WINDING GROUPS OF EACH PHASE CONNECTED IN PARALLEL AND IN A POLYPHASE POSITION, AND AT THE SAID 2 NUMBER OF POLES AT LEAST TWO WHOLE POLE WINDING GROUPS OF EACH PHASE CONNECTED IN SERIES AND IN A POLYPHASE POSITION, AND AT THE SAID 3 NUMBER OF POLES AT LEAST TWO PARALLEL CIRCUITS EACH CONSISTING OF AT LEAST THREE WHOLE POLE WINDING GROUPS CONNECTED IN SERIES AND IN A SINGLE PHASE RUNNING WINDING POSITION, AND AT EACH OF SAID NUMBER OF POLES ALL OF THE COILS OF THE SAID WHOLE POLE WINDING GROUPS OF SAID ONE OF SAID WINDINGS ARE ENERGIZED BY AN A.C. SOURCE OF ENERGY, AND AT EACH OF SAID NUMBER OF POLES, EACH OF SAID WHOLE POLE WINDING GROUPS TO MAINTAIN THE SAME MAGNETIC FLUX AXIS IN THE MAGNETIC CENTER OF THE SAID WHOLE POLE WINDING GROUP.
Claim 2
Dependent Claim
205 words
A THREE SPEED A.C. MOTOR COMPRISING A STATOR HAVING A STATOR WINDING THEREON AND A ROTOR HAVING A ROTOR WINDING THEREON, ONE OF SAID WINDINGS HAVING AT LEAST TWO WHOLE POLE WINDING GROUPS PER PHASE ARRANGED FOR CHANGING THE NUMBER OF POLES IN THE RELATION OF 1, 2, AND 3 NUMBER OF POLES, HAVING AT THE SAID 1 NUMBER OF POLES AT LEAS TWO WHOLE POLE WINDING GROUPS OF EACH PHASE CONNECTED IN PARALLEL AND IN A POLYPHASE POSITION, AND AT THE SAID 2 NUMBER OF POLES AT LEAST TWO WHOLE POLE WINDING GROUPS OF EACH PHASE CONNECTED IN SERIES AND IN A POLYPHASE POSITION, AND AT THE SAID 3 NUMBER OF POLES AT LEAST TWO PARALLEL CIRCUITS EACH CONSISTING OF AT LEAST THREE WHOLE POLE WINDING GROUPS CONNECTED IN SERIES AND IN A SINGLE PHASE RUNNING WINDING POSITION, AND AT EACH OF SAID NUMBER OF POLES ALL OF THE COILS OF THE SAID WHOLE POLE WINDING GROUPS OF SAID ONE OF SAID WINDINGS ARE ENERGIZED BY AN A.C. SOURCE OF ENERGY, AND AT EACH OF SAID NUMBER OF POLES, EACH OF SAID WHOLE POLE WINDING GROUPS TO MAINTAIN THE SAME MAGNETIC FLUX AXIS IN THE MAGNETIC CENTER OF THE SAID WHOLE POLE WINDING GROUP.
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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |