US3221194A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Permanent magnet rotor
Assignee: Motors Liquidation Co
•
Filing: 1962-01-24
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Granted: 1965-11-30
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Expires: 1982-01-24
Abstract
No abstract record available.
Inventors
- 👤 Alan B Blackburn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:01
CPC Classifications
H; H02; H02K; H02K1/00; H02K1/06; H02K1/22; H02K1/27; H02K1/2706; H02K1/272; H02K1/274; H02K1/2753; H02K1/276
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A PERMANENT MAGNET ROTOR ASSEMBLY INCLUDING, A CENTRAL CORE, A PLURALITY OF POLYHEDRAL LAMINATED KEEPERS ARRANGED CIRCUMFERENTIALLY OF AND MOUNTED ON SAID CORE AND EXTENDED RADIALLY THEREFROM, EACH KEEPER HAVING TWO ANGULARLY ORIENTED OUTER FACES, A PLURALITY OF BAR MAGNETS ARRANGED CIRCUMFERENTIALLY AND EXTENDING RAFIALLY OF SAID KEEPERS, THE INNER END OF EACH BAR MAGNET ENGAGING ONE FACE OF A PAIR OF ADJACENT KEEPERS, A PLURALITY OF POLE PIECES FOR THE OUTER ENDS OF SAID BAR MAGNETS, A PLURALITY OF AXIALLY SPACED NONMAGNETIC SUPPORT RINGS ATTACHED TO SAID POLE PIECES, AND A PAIR OF END PLATES ATTACHED TO SAID POLE PIECES AND SAID SUPPORT RINGS EACH KEEPER BEING LOOSELY LOCATED BETWEEN SAID END PLATES PRIOR TO MAGNETIZA TION BY A PIN EXTENDING AXIALLY BETWEEN SAID END PLATES.
Claim 2
Dependent Claim
127 words
A PERMANENT MAGNET ROTOR ASSEMBLY INCLUDING, A CENTRAL CORE, A PLURALITY OF POLYHEDRAL LAMINATED KEEPERS ARRANGED CIRCUMFERENTIALLY OF AND MOUNTED ON SAID CORE AND EXTENDED RADIALLY THEREFROM, EACH KEEPER HAVING TWO ANGULARLY ORIENTED OUTER FACES, A PLURALITY OF BAR MAGNETS ARRANGED CIRCUMFERENTIALLY AND EXTENDING RAFIALLY OF SAID KEEPERS, THE INNER END OF EACH BAR MAGNET ENGAGING ONE FACE OF A PAIR OF ADJACENT KEEPERS, A PLURALITY OF POLE PIECES FOR THE OUTER ENDS OF SAID BAR MAGNETS, A PLURALITY OF AXIALLY SPACED NONMAGNETIC SUPPORT RINGS ATTACHED TO SAID POLE PIECES, AND A PAIR OF END PLATES ATTACHED TO SAID POLE PIECES AND SAID SUPPORT RINGS EACH KEEPER BEING LOOSELY LOCATED BETWEEN SAID END PLATES PRIOR TO MAGNETIZA TION BY A PIN EXTENDING AXIALLY BETWEEN SAID END PLATES.
References Cited (Backward Citations)
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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 |