US3295034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-speed single-phase electric motor
Assignee: Westinghouse Electric Corp
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Filing: 1963-08-26
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Granted: 1966-12-27
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Expires: 1983-08-26
Abstract
No abstract record available.
Inventors
- 👤 George E Herzog
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:47
CPC Classifications
H; H02; H02K; H02K17/00; H02K17/02; H02K17/04; H02K17/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
A TWO-SPEED SINGLE-PHASE MOTOR HAVING A MAIN PRIMARY WINDING AND AN AUXILIARY PRIMARY WINDING, SAID WINDINGS HAVING THE SAME NUMBER OF POLE GROUPS AND BEING DISPOSED FROM EACH OTHER ON THE PRIMARY MEMBER OF THE MOTOR, EACH OF SAID WINDINGS COMPRISING A FIRST PORTION CONSISTING OF AT LEAST TWO PAIRS OF ADJACENT POLE GROUPS, THE POLE GROUPS OF EACH PAIR BEING OF OPPOSITE POLARITY, AND SAID PAIRS OF POLE GROUPS BEING SEPARATED BY INTERVENING POLE GROUPS AND A SECOND PORTION CONSISTING OF SAID INTERVENING POLE GROUPS, THE INTERVENING POLE GROUPS BEING OF SUCCESSIVELY OPPOSITE POLARITIES AND EACH INTERVEING POLE GROUP BEING OF THE SAME POLARITY AS THE ADJACENT POLE GROUPS OF THE FIRST PORTION, AND MEANS FOR ALTERNATIVELY CONNECTING THE FIRST PORTIONS ONLY OF BOTH WINDINGS TO A SINGLE-PHASE LINE FOR OPERATION OF THE MOTOR AT ONE SPEED OR FOR CONNECTING THE FIRST AND SECOND PORTIONS OF THE MAIN WINDING AND THE SECOND PORTION ONLY OF THE AUXILIARY WINDING TO THE LINE FOR OPERATION AT A DIFFERENT SPEED.
Claim 2
Dependent Claim
168 words
A TWO-SPEED SINGLE-PHASE MOTOR HAVING A MAIN PRIMARY WINDING AND AN AUXILIARY PRIMARY WINDING, SAID WINDINGS HAVING THE SAME NUMBER OF POLE GROUPS AND BEING DISPOSED FROM EACH OTHER ON THE PRIMARY MEMBER OF THE MOTOR, EACH OF SAID WINDINGS COMPRISING A FIRST PORTION CONSISTING OF AT LEAST TWO PAIRS OF ADJACENT POLE GROUPS, THE POLE GROUPS OF EACH PAIR BEING OF OPPOSITE POLARITY, AND SAID PAIRS OF POLE GROUPS BEING SEPARATED BY INTERVENING POLE GROUPS AND A SECOND PORTION CONSISTING OF SAID INTERVENING POLE GROUPS, THE INTERVENING POLE GROUPS BEING OF SUCCESSIVELY OPPOSITE POLARITIES AND EACH INTERVEING POLE GROUP BEING OF THE SAME POLARITY AS THE ADJACENT POLE GROUPS OF THE FIRST PORTION, AND MEANS FOR ALTERNATIVELY CONNECTING THE FIRST PORTIONS ONLY OF BOTH WINDINGS TO A SINGLE-PHASE LINE FOR OPERATION OF THE MOTOR AT ONE SPEED OR FOR CONNECTING THE FIRST AND SECOND PORTIONS OF THE MAIN WINDING AND THE SECOND PORTION ONLY OF THE AUXILIARY WINDING TO THE LINE FOR OPERATION AT A DIFFERENT SPEED.
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) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |