US3564364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiphase induction motor
Assignee: Gebr Honsberg GmbH
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Filing: 1968-09-16
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Granted: 1971-02-16
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Expires: 1988-09-16
Abstract
Abstract A POLYPHASE ELECTRIC MOTOR AND A POLYPHASE ELECTRIC POWER SUPPLY LINE HAVING A WIRE CONNECTED TO EACH PHASE OF THE MOTOR AND CONTACT FREE SWITCH MEANS FOR CONTROLLING THE ENERGY SUPPLY TO THE COILS AND CONSISTING OF NORMALLY NON-CONDUCTIVE SEMICONDUCTORS IN SERIES WITH EACH MOTOR COIL. EACH SEMICONDUCTOR HAS A CONTROL TERMINAL SENSITIVE TO DIRECT CURRENT VOLTAGE TO MAKE IT CONDUCTIVE AND A SUPPLY OF DIRECT CURRENT FOR CONNECTION TO THE TERMINALS. BY VARIOUS COMBINATIONS OF COILS THE MOTOR CAN BE MADE TO RUN AT HIGH SPEED OR LOW SPEED AND IN EITHER FORWARD OR REVERSE DIRECTION.
Inventors
- 👤 Alfred Neff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:28
CPC Classifications
H; H02; H02K; H02K17/00; H02K17/02; H02K17/12; H02K17/14; H02K17/30; H02P; H02P23/00; H02P23/24; H02P25/00; H02P25/16; H02P25/18; H02P25/20; H02P27/00; H02P27/02
Claims Analysis
Total Claims: 0
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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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |