US3263143A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency converter
Assignee: Compagnie Electro Mecanique SA
•
Filing: 1962-02-26
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Granted: 1966-07-26
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Expires: 1982-02-26
Abstract
No abstract record available.
Inventors
- 👤 Moressee Georges
- 👤 Dechet Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:52
CPC Classifications
H; H02; H02K; H02K47/00; H02K47/18; H02K47/22; H02K47/28; H02K3/00; H02K3/04; H02K3/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
IN A FREQUENCY CONVERTER, THE COMBINATION COMPRISING A DISK-SHAPED ROTOR INCLUDING ON OPPOSITE FACES THEREOF A FLAT WINDING AND ROTATABLE IN A PLANE AXIAL GAP, A STATOR, MAGNETIC MEMBERS LOCATED ON SAID STATOR AT OPPOSITE FACES OF SAID ROTOR DISK AND DELIMITING SAID PLANAR AXIAL AIR GAP, SAID MAGNETIC MEMBERS BEING PARTS OF A YOKE WHICH CLOSES THE MAGNETIC CIRCUIT, SLIP RINGS ON SAID ROTOR IN THE FORM OF CONCENTRIC CIRCULAR CONDUCTIVE TRACKS, CONNECTIONS BETWEEN SAID SLIP RINGS AND SELECTED POINTS ON THAT PART OF SAID ROTOR WINDINGS WHICH LIES ON ONE FACE OF SAID ROTOR DISK, A FIRST SET OF BRUSHES ENGAG-
Claim 2
Dependent Claim
103 words
IN A FREQUENCY CONVERTER, THE COMBINATION COMPRISING A DISK-SHAPED ROTOR INCLUDING ON OPPOSITE FACES THEREOF A FLAT WINDING AND ROTATABLE IN A PLANE AXIAL GAP, A STATOR, MAGNETIC MEMBERS LOCATED ON SAID STATOR AT OPPOSITE FACES OF SAID ROTOR DISK AND DELIMITING SAID PLANAR AXIAL AIR GAP, SAID MAGNETIC MEMBERS BEING PARTS OF A YOKE WHICH CLOSES THE MAGNETIC CIRCUIT, SLIP RINGS ON SAID ROTOR IN THE FORM OF CONCENTRIC CIRCULAR CONDUCTIVE TRACKS, CONNECTIONS BETWEEN SAID SLIP RINGS AND SELECTED POINTS ON THAT PART OF SAID ROTOR WINDINGS WHICH LIES ON ONE FACE OF SAID ROTOR DISK, A FIRST SET OF BRUSHES ENGAG-
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) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |