Patent US4305024A successfully refreshed from Google Patents.
US4305024A
Expired / Lapsed
US
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Magnetic motor
Assignee: Individual
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Filing: 1980-04-08
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Granted: 1981-12-08
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Expires: 2000-04-08
Abstract
Abstract A magnetic motor comprises a plurality of electromagnets connected to an excitation circuit, and a rotor assembly having a plurality of permanent magnets around its periphery and arranged for angular movement. The permanent magnets are movable between the respective adjacent electromagnets. The electromagnets are selectively excitated through the excitation circuit for being magnetized to have the same pole as the pole of a respective one of the permanent magnets disposed closely adjacent to them whereby the rotor assembly is caused to angularly move under the influence of magnetic repulsive forces exerted between the respective closely adjacent electromagnets and permanent magnets.
Inventors
- 👤 Setsuo Kuroki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:32
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/06; H02K7/065; H02K33/00; H02K33/12; H02K33/14
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
200 words
A magnetic motor which comprises: (a) a housing having a shaft extending therethrough at its center; (b) a rotor assembly having a plurality of permanent magnets around its periphery in equally spaced relation, said rotor assembly being mounted on said shaft within said housing for angular movement about said shaft between fully clockwise and counterclockwise-rotated positions; (c) a plurality of electromagnets mounted on said housing around its circumference in equally spaced relation, said plurality of permanent magnets being movable between the respective adjacent electromagnets, said electromagnets being electrically connected to an excitation circuit, and said electromagnets being selectively excited through said excitation circuit for being magnetized to have the same magnetic pole as the pole of a respective one of said permanent magnets disposed closely adjacent to them whereby said rotor assembly is caused to angularly move under the influence of magnetic repulsive forces exerted between the respective closely adjacent electromagnets and permanent magnets; (d) an output means operatively associated with said housing for rotation about an axis thereof; and (e) a transmission mechanism operatively connected between said rotor assembly and said output means for converting the angular movement of said rotor assembly into continuous rotation of said output means.
Claim 2
Dependent Claim
200 words
A magnetic motor which comprises: (a) a housing having a shaft extending therethrough at its center; (b) a rotor assembly having a plurality of permanent magnets around its periphery in equally spaced relation, said rotor assembly being mounted on said shaft within said housing for angular movement about said shaft between fully clockwise and counterclockwise-rotated positions; (c) a plurality of electromagnets mounted on said housing around its circumference in equally spaced relation, said plurality of permanent magnets being movable between the respective adjacent electromagnets, said electromagnets being electrically connected to an excitation circuit, and said electromagnets being selectively excited through said excitation circuit for being magnetized to have the same magnetic pole as the pole of a respective one of said permanent magnets disposed closely adjacent to them whereby said rotor assembly is caused to angularly move under the influence of magnetic repulsive forces exerted between the respective closely adjacent electromagnets and permanent magnets; (d) an output means operatively associated with said housing for rotation about an axis thereof; and (e) a transmission mechanism operatively connected between said rotor assembly and said output means for converting the angular movement of said rotor assembly into continuous rotation of said output means.
Claim 3
Dependent Claim
78 words
A magnetic motor according to claim 1, in which said rotor assembly comprises a pair of closely spaced, opposed discs, and the number of each of said electromagnets and said permanent magnets is four, said permanent magnets being attached to said pair of discs around its peripheries in equally spaced relationship to each other, said housing comprising a pair of spaced, opposed circular plates, and said electromagnets being interposed between the opposed peripheral margins of said circular plates.
Claim 4
Dependent Claim
68 words
A magnetic motor according to claim 2, in which each of said permanent magnets includes a body of generally T-shape having an arcuate base portion and a leg portion extending from said base portion, the arcuate base portions being interposed between the opposed peripheral margins of said discs in end to end relation to one another, and each of said leg portions extending radially outwardly of said discs.
Claim 5
Dependent Claim
36 words
A magnetic motor according to claim 2, in which a plurality of coacting crank members and connecting rods, which constitute part of said transmission mechanism, are mounted on and operatively associated with said pair of discs.
Claim 6
Dependent Claim
50 words
A magnetic motor according to claim 1, in which a plurality of rotor assemblies are mounted on said shaft within said housing and are angularly moved in opposite directions with respect to their respective adjacent ones, the plurality of rotor assemblies being operatively engaged to one another through transmission means.
Claim 7
Dependent Claim
79 words
A magnetic motor according to claim 1, in which said excitation circuit includes a DC power source and an inverter for converting direct current from said power source into alternating current, the forward current through said excitation circuit exciting said electromagnets during one half of each cycle of the alternating current, and the inverse current exciting said electromagnets during the other half of each cycle, so that said electromagnets are magnetized to be of alternate north and south polarity.
Claim 8
Dependent Claim
106 words
A magnetic motor according to claim 1, in which said excitation circuit includes a DC power source and an inverter for converting direct current from said power source into alternating current, the forward current through said excitation circuit exciting said electromagnets during one half of each cycle of the alternating current so that each electromagnet is magnetized to have a predetermined pole which is different from the poles of its adjacent electromagnets, and the inverse current then exciting said electromagnets during the other half of each cycle so that said each electromagnet is magnetized to have the other pole which is different from its adjacent electromagnets.
Claim 9
Dependent Claim
22 words
A magnetic motor according to claim 1, in which the alternate electromagnets are selectively excited through said excitation circuit for being magnetized.
Claim 10
Dependent Claim
39 words
A magnetic motor according to claim 1, in which sensor means is operatively engaged to said rotor assembly for activating said excitation circuit so that the activation is effected in synchronism with the angular movement of said rotor assembly.
Claim 11
Dependent Claim
42 words
A magnetic motor according to claim 9, in which said sensor means comprises a pair of reed switches mounted on said housing and a pair of magnets operatively engaged to said rotor assembly for selectively activating said pair of reed switches, respectively.
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) | 1984-12-07 | 1985-06-08 | 1985-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-07 | 1989-06-08 | 1989-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-07 | 1993-06-08 | 1993-12-08 | $7700.00 | Window Closed / Lapsed |