Patent US4064704A successfully refreshed from Google Patents.
US3200316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronically commutated direct-current motor
Assignee: Siemens Schuckertwerke AG
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Filing: 1963-05-09
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Granted: 1965-08-10
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Expires: 1983-05-09
Abstract
No abstract record available.
Inventors
- 👤 Engel Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:27
CPC Classifications
H; H02; H02K; H02K29/00; H02K29/06; H02K29/08; H02P; H02P6/00; H02P6/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
AN ELECTRONICALLY COMMUTATED D.-C. MOTOR SYSTEM COMPRISING MAGNETIZED ROTOR MEANS, STATOR MEANS INCLUDING A PLURALITY OF WINDINGS ANGULARLY DISPLACED AROUND SAID ROTOR FOR INDUCTIVELY INTERLINKING WITH SAID ROTOR, TWO MAGNETIC-FIELD RESPONSIVE RESISTANCE MEANS EACH HAVING RESISTANCE INCREASING SLOWLY FOR FLUX INCREASES AT LOWER FLUX VALUES AND INCREASING STEEPLY FOR FLUX INCREASES AT MORE INTENSE FLUX VALUES, SAID MAGNETIC-FIELD RESPONSIVE RESISTANCE MEANS BEING DISPLACED FROM EACH OTHER AROUND THE ROTOR AND SUBJECTED TO VARYING FLUX AS THE ROTOR TURNS IN SUCH A MANNER THAT WHEN THE ROTOR FLUX IS GREATEST THE RESISTANCE OF SAID RESISTANCE MEANS WILL VARY STEEPLY WITH CHANGES OF FLUX AND SO THAT WHEN THE ROTOR FLUX IS MINIMUM THE RESISTRANCE WILL VARY SLOWLY FOR CHANGESIN FLUX,
Claim 2
Dependent Claim
119 words
AN ELECTRONICALLY COMMUTATED D.-C. MOTOR SYSTEM COMPRISING MAGNETIZED ROTOR MEANS, STATOR MEANS INCLUDING A PLURALITY OF WINDINGS ANGULARLY DISPLACED AROUND SAID ROTOR FOR INDUCTIVELY INTERLINKING WITH SAID ROTOR, TWO MAGNETIC-FIELD RESPONSIVE RESISTANCE MEANS EACH HAVING RESISTANCE INCREASING SLOWLY FOR FLUX INCREASES AT LOWER FLUX VALUES AND INCREASING STEEPLY FOR FLUX INCREASES AT MORE INTENSE FLUX VALUES, SAID MAGNETIC-FIELD RESPONSIVE RESISTANCE MEANS BEING DISPLACED FROM EACH OTHER AROUND THE ROTOR AND SUBJECTED TO VARYING FLUX AS THE ROTOR TURNS IN SUCH A MANNER THAT WHEN THE ROTOR FLUX IS GREATEST THE RESISTANCE OF SAID RESISTANCE MEANS WILL VARY STEEPLY WITH CHANGES OF FLUX AND SO THAT WHEN THE ROTOR FLUX IS MINIMUM THE RESISTRANCE WILL VARY SLOWLY FOR CHANGESIN FLUX,
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) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |