Patent US2720617A successfully refreshed from Google Patents.
US3321685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamoelectric machine including current limitation by capacitance discharge controlof power winding switch
Assignee: Carrier Corp
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Filing: 1965-01-06
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Granted: 1967-05-23
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Expires: 1985-01-06
Abstract
No abstract record available.
Inventors
- 👤 Virgil I Johannes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:33
CPC Classifications
H; H02; H02H; H02H7/00; H02H7/08; H02H7/0833
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
66 words
IN A CONTROL ARRANGEMENT FOR OPERATING A MOTOR HAVING ENERGIZING WINDINGS AND A ROTOR MOVABLE ON ENERGIZATION OF SAID WINDINGS, THE COMBINATION OF A SOLID STATE SWITCHING DEVICE FOR EACH OF SAID WINDINGS ADAPTED WHEN RENDERED OPERATIVE TO ENERGIZE THE WINDING ASSOCIATED THEREWITH TO MOVE SAID ROTOR, MEANS FOR RENDERING SAID SWITCHING DEVICES OPERATIVE IN SELECTED ORDER TO OPERATE SAID MOTOR, CAPACITANCE MEANS CHARGEABLE UPON ENER-
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-22 | 1970-11-21 | 1971-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-22 | 1974-11-21 | 1975-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-22 | 1978-11-21 | 1979-05-23 | $7700.00 | Window Closed / Lapsed |