Patent US2139105A successfully refreshed from Google Patents.
US3083314A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: —
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Filing: —
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Granted: 1963-03-26
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Expires: 1980-03-26
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:05
CPC Classifications
H; H02; H02K; H02K13/00; H02K13/003; H02K29/00; H02K29/06; H02K29/08; Y; Y10; Y10S; Y10S310/00; Y10S310/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
IN A HALL-EFFECT D.-C. MOTOR HAVING AN OUTER STATOR MEMBER AND AN INNER ROTOR MEMBER, THE STATOR MEMBER HAVING A PLURALITY OF FIELD COILS THEREON, THE ROTOR MEMBER INCLUDING A CYLINDRICAL PERMANENT MAGNET, THE IMPROVEMENT THEREIN COMPRISING, FIRST AND SECOND SECTIONS IN SAID CYLINDRICAL PERMANENT MAGNET, SAID FIRST SECTION BEING A RELATIVELY LONG CYLINDER HAVING A RELATIVELY LARGE DIAMETER AND DISPOSED IN AND CONCENTRIC WITH THE STATOR, SAID SECOND SECTION BEING A SMALL CYLINDER OF RELATIVELY SMALLER DIAMETER THAN SAID FIRST SECTION AND SEPARATED THEREFROM BY A NARROW GAP, AND A HALL GENERATOR BAND COUPLED TO SAID FIELD COILS, OF SUBSTANTIALLY CIRCULAR CONFIGURATION, SURROUNDING SAID SECOND SECTION, SEPARATED THEREFROM BY A NARROW AIR GAP.
Claim 2
Dependent Claim
114 words
IN A HALL-EFFECT D.-C. MOTOR HAVING AN OUTER STATOR MEMBER AND AN INNER ROTOR MEMBER, THE STATOR MEMBER HAVING A PLURALITY OF FIELD COILS THEREON, THE ROTOR MEMBER INCLUDING A CYLINDRICAL PERMANENT MAGNET, THE IMPROVEMENT THEREIN COMPRISING, FIRST AND SECOND SECTIONS IN SAID CYLINDRICAL PERMANENT MAGNET, SAID FIRST SECTION BEING A RELATIVELY LONG CYLINDER HAVING A RELATIVELY LARGE DIAMETER AND DISPOSED IN AND CONCENTRIC WITH THE STATOR, SAID SECOND SECTION BEING A SMALL CYLINDER OF RELATIVELY SMALLER DIAMETER THAN SAID FIRST SECTION AND SEPARATED THEREFROM BY A NARROW GAP, AND A HALL GENERATOR BAND COUPLED TO SAID FIELD COILS, OF SUBSTANTIALLY CIRCULAR CONFIGURATION, SURROUNDING SAID SECOND SECTION, SEPARATED THEREFROM BY A NARROW AIR GAP.
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) | 1966-03-25 | 1966-09-24 | 1967-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-25 | 1970-09-24 | 1971-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-25 | 1974-09-24 | 1975-03-26 | $7700.00 | Window Closed / Lapsed |