Patent US3221196A successfully refreshed from Google Patents.
US3221196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asynchronous motor armature
Assignee: Societe dElectronique et dAutomatisme SA
•
Filing: 1960-08-12
•
Granted: 1965-11-30
•
Expires: 1980-08-12
Abstract
No abstract record available.
Inventors
- 👤 Henry-Baudot Jacques
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:23
CPC Classifications
H; H02; H02K; H02K17/00; H02K17/02; H02K17/16; H02K17/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
192 words
A ROTOR FOR AN ELECTRIC MOTOR OIF THE AXIAL AIRGAP TYPE COMPRISING A METALLIC DISK FORMED OF ELECTRICALLY CONDUCTIVE BUT NON-MAGNETIC MATERIAL AND HAVING A FLAT RADIAL FACE, SAID DISK HAVING A PLURALITY OF CAVITIES FORMED IN AN ANNULAR AREA OF SAID FACE, AND MAGNETIC MATERIAL INSERTS FILLING SAID CAVITIES AND HAVING EXPOSED AREAS WHICH ARE FLUSH WITH RESPECT TO SAID FLAT RADIAL FACE, SAID CAVITIES BEING DISTRIBUTED OVER SAID ANNULAR AREA TO PROVIDFE INNER AND OUTER PERIPHERAL PORTIONS WHICH ARE FREE OF CAVITIES AND CONSTITUTE CONTINUOUS CONDUCTIVE RING PORTIONS, SAID CAVITIES BEING SPACIALLY DISTRIBUTED TO PROVIDE A PLURALITY OF CONTINUOUS METALLIC CONDUTIVE PATHS ON SAID FACE EXTENDING GENERALLY RADIALLY FROM THE INNER CONDUCTIVE RING PORTION OF THE DISK TO THE OUTER CONDUCTIVE RING PORTION, THE SPECIAL DISTRIBUTION OF THE CAVITIES BEING SUCH THAT THE LINEAR CONFIGURATION OF EAC CONDUCTIVE PATH IS DIFFERENT FROM THE LINEAR CONFIGURATION OF THE IMMEDIATELY ADJACENT CONDUCTIVE PATHS, AND THE DISTRIBUTION OF SAID INSERTS BEING SUCH AS TO MAINTAIN A SUBSTANTIALLY CONSTANT RATIO BETWEEN THE SURFACE OF SAID INSERTS AND THE EXPOSED AREA OF THE DISK FACE FOR DIFFERENT RADIAL DISTANCES FROM THE CENTER OF THE DISK.
Claim 2
Dependent Claim
192 words
A ROTOR FOR AN ELECTRIC MOTOR OIF THE AXIAL AIRGAP TYPE COMPRISING A METALLIC DISK FORMED OF ELECTRICALLY CONDUCTIVE BUT NON-MAGNETIC MATERIAL AND HAVING A FLAT RADIAL FACE, SAID DISK HAVING A PLURALITY OF CAVITIES FORMED IN AN ANNULAR AREA OF SAID FACE, AND MAGNETIC MATERIAL INSERTS FILLING SAID CAVITIES AND HAVING EXPOSED AREAS WHICH ARE FLUSH WITH RESPECT TO SAID FLAT RADIAL FACE, SAID CAVITIES BEING DISTRIBUTED OVER SAID ANNULAR AREA TO PROVIDFE INNER AND OUTER PERIPHERAL PORTIONS WHICH ARE FREE OF CAVITIES AND CONSTITUTE CONTINUOUS CONDUCTIVE RING PORTIONS, SAID CAVITIES BEING SPACIALLY DISTRIBUTED TO PROVIDE A PLURALITY OF CONTINUOUS METALLIC CONDUTIVE PATHS ON SAID FACE EXTENDING GENERALLY RADIALLY FROM THE INNER CONDUCTIVE RING PORTION OF THE DISK TO THE OUTER CONDUCTIVE RING PORTION, THE SPECIAL DISTRIBUTION OF THE CAVITIES BEING SUCH THAT THE LINEAR CONFIGURATION OF EAC CONDUCTIVE PATH IS DIFFERENT FROM THE LINEAR CONFIGURATION OF THE IMMEDIATELY ADJACENT CONDUCTIVE PATHS, AND THE DISTRIBUTION OF SAID INSERTS BEING SUCH AS TO MAINTAIN A SUBSTANTIALLY CONSTANT RATIO BETWEEN THE SURFACE OF SAID INSERTS AND THE EXPOSED AREA OF THE DISK FACE FOR DIFFERENT RADIAL DISTANCES FROM THE CENTER OF THE DISK.
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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |