US3131341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semi-conductor device commutated dynamo electric machine
Assignee: INDUSTRIELLE DES NOUVELLES TECHNIQUES RADIOELECTRIQUES Ste
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Filing: 1960-10-24
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Granted: 1964-04-28
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Expires: 1980-10-24
Abstract
No abstract record available.
Inventors
- 👤 Kniazeff Georges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:00
CPC Classifications
H; H02; H02P; H02P25/00; H02P25/02; H02P25/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A ROTARY ELECTRIC MACHINE COMPRISING A ROTOR, A PLURALITY OF ARMATURE WINDINGS IN SAID ROTOR, A COMMUTATOR HAVING A PLURALITY OF COMMUTATOR SEGMENTS, A PAIR OF SLIP RINGS FOR THE NON-COMMUTATED FLOW OF CURRENT BETWEEN SAID ARMATURE WINDINGS AND THE EXTERIOR, AND A PLURALITY OF TRANSISTOR SWITCHES EACH COMPRISING AN NPN TRANSISTORS AND PNP TRANSISTOR, BOTH WITH BASE,
Claim 2
Dependent Claim
58 words
A ROTARY ELECTRIC MACHINE COMPRISING A ROTOR, A PLURALITY OF ARMATURE WINDINGS IN SAID ROTOR, A COMMUTATOR HAVING A PLURALITY OF COMMUTATOR SEGMENTS, A PAIR OF SLIP RINGS FOR THE NON-COMMUTATED FLOW OF CURRENT BETWEEN SAID ARMATURE WINDINGS AND THE EXTERIOR, AND A PLURALITY OF TRANSISTOR SWITCHES EACH COMPRISING AN NPN TRANSISTORS AND PNP TRANSISTOR, BOTH WITH BASE,
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |