US3250971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direct-current motor with commutator
Assignee: Siemens Schuckertwerke AG
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Filing: 1964-01-20
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Granted: 1966-05-10
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Expires: 1984-01-20
Abstract
No abstract record available.
Inventors
- 👤 Brunner Julius
- 👤 Moisel Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:34
CPC Classifications
H; H02; H02K; H02K29/00; H02K29/06; H02K29/08; H02P; H02P6/00; H02P6/08; H02P6/085
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A DIRECT-CURRENT MOTOR WITH COMMUTATOR, COMPRISING A PERMANENT-MAGNET ROTOR, TWO STATOR WINDINGS DISPLACED 90* FROM A EACH OTHER, TWO BRIDGE NETWORKS HAVING EACH A DIAGONAL IN WHICH ONE OF SAID RESPECTIVE STATOR WINDINGS IS CONNECTED, EACH NETWOK HAVING A MID-TAPPED DIRECT VOLTAGE SOURCE WHOSE TWO HALF-PORTIONS FORM TWO BRIDGE BRANCHES ADJACENT TO SAID DIAGONAL, THE REMAINING TWO BRANCHES OF EACH NETWORK BEING FORMED SUBSTANTIALLY OF RESPECTIVE SEMICONDUCTOR SWITCHING DEVICES, TRANSDUCER MEANS FOR TRANSLATING THE ROTATION OF SAID ROTOR INTO TWO ALTERNATING PULSE CURRENTS OF 90* PHASE DISPLACEMENT FROM EACH OTHER, EACH OF SAID SEMICONDUCTOR DEVICES HAVING AN INGITION CONTROL CIRCUIT CONNECTED TO SAID TRANSDUCER MEANS FOR APPLYING SAID PULSE CURRENTS TO SAID DEVICES.
Claim 2
Dependent Claim
113 words
A DIRECT-CURRENT MOTOR WITH COMMUTATOR, COMPRISING A PERMANENT-MAGNET ROTOR, TWO STATOR WINDINGS DISPLACED 90* FROM A EACH OTHER, TWO BRIDGE NETWORKS HAVING EACH A DIAGONAL IN WHICH ONE OF SAID RESPECTIVE STATOR WINDINGS IS CONNECTED, EACH NETWOK HAVING A MID-TAPPED DIRECT VOLTAGE SOURCE WHOSE TWO HALF-PORTIONS FORM TWO BRIDGE BRANCHES ADJACENT TO SAID DIAGONAL, THE REMAINING TWO BRANCHES OF EACH NETWORK BEING FORMED SUBSTANTIALLY OF RESPECTIVE SEMICONDUCTOR SWITCHING DEVICES, TRANSDUCER MEANS FOR TRANSLATING THE ROTATION OF SAID ROTOR INTO TWO ALTERNATING PULSE CURRENTS OF 90* PHASE DISPLACEMENT FROM EACH OTHER, EACH OF SAID SEMICONDUCTOR DEVICES HAVING AN INGITION CONTROL CIRCUIT CONNECTED TO SAID TRANSDUCER MEANS FOR APPLYING SAID PULSE CURRENTS TO SAID DEVICES.
References Cited (Backward Citations)
US3200316A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |