US3307091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronically commutated dynamoelectric machine
Assignee: Carrier Corp
•
Filing: 1964-06-09
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Granted: 1967-02-28
•
Expires: 1984-06-09
Abstract
No abstract record available.
Inventors
- 👤 Virgil I Johannes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:28
CPC Classifications
H; H02; H02K; H02K29/00; H02K29/06; H02K29/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
70 words
IN A MOTOR HAVING A ROTOR AND AT LEAST ONE PAIR OF ENERGIZING WINDINGS INDUCTIVELY COUPLED ONE TO THE OTHER, THE COMBINATION OF MEANS FOR ENERGIZING EACH OF SAID WINDINGS IN A PREDETERMINED ORDER TO EFFECT ROTATION OF SAID ROTOR, SAID MEANS INCLUDING AT LEAST ONE SOLID STATE SWITCHING DEVICE ASSOCIATED WITH EACH OF SAID WINDINGS, AND MEANS FOR DEENERGIZING EACH OF SAID WINDINGS INCLUDING CAPACITANCE MEANS DISCHARGEABLE THROUGH ONE
References Cited (Backward Citations)
US3229179A
Cited
US3132294A
Cited
US3156858A
Cited
US3184665A
Cited
US3120620A
Cited
US3225277A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |