Patent US5081388A successfully refreshed from Google Patents.
US5081388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic induction motor
Assignee: Individual
•
Filing: 1990-07-24
•
Granted: 1992-01-14
•
Expires: 2010-07-24
Abstract
Abstract This invention relates to a magnetic induction motor and in particular to one which utilizes permanent magnets fitted on a rotor in association with electromagnets mounted on a stator so that the opposite surfaces of the permanent magnets and the electromagnetic are of the same pole thereby repelling the rotor to rotate when current passes through the electromagnets.
Inventors
- 👤 Shew-Nen Chen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:44
CPC Classifications
H; H02; H02K; H02K21/00; H02K21/12; H02K2201/00; H02K2201/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
A magnetic induction motor comprising: a plurality of ferrite cores each of said ferrite cores wound with a coil; an outer stator made of iron and provided with a plurality of recesses spaced apart on an inner surface thereof, each of said recesses for receiving a respective one of of said plurality of said ferrite cores; an inner stator formed of iron and having a center through hole for receiving a shaft therein, said inner stator having a plurality of recesses for receiving a respective one of said plurality of ferrite cores; a rotor coupled to said shaft for rotation between said inner and outer stators, said rotor provided with a plurality of recesses in each of which is disposed a permanent magnet, each of said permanent magnets having opposing pole surfaces magnetized to be of like polarity, each of said opposing pole surfaces to interface with a respective inner or outer stator surface; and a pair of covers for mounting said outer stator and said inner stator.
Claim 2
Dependent Claim
168 words
A magnetic induction motor comprising: a plurality of ferrite cores each of said ferrite cores wound with a coil; an outer stator made of iron and provided with a plurality of recesses spaced apart on an inner surface thereof, each of said recesses for receiving a respective one of of said plurality of said ferrite cores; an inner stator formed of iron and having a center through hole for receiving a shaft therein, said inner stator having a plurality of recesses for receiving a respective one of said plurality of ferrite cores; a rotor coupled to said shaft for rotation between said inner and outer stators, said rotor provided with a plurality of recesses in each of which is disposed a permanent magnet, each of said permanent magnets having opposing pole surfaces magnetized to be of like polarity, each of said opposing pole surfaces to interface with a respective inner or outer stator surface; and a pair of covers for mounting said outer stator and said inner stator.
References Cited (Backward Citations)
US3538364A
Cited
US4234808A
Cited
US4347457A
Cited
US4517484A
Cited
US4757220A
Cited
US4633109A
Cited
US4714853A
Cited
US4982128A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-01-13 | 1995-07-15 | 1996-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-13 | 1999-07-15 | 2000-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-13 | 2003-07-15 | 2004-01-14 | $7700.00 | Window Closed / Lapsed |