Motive power generating device
First Claim
1. A motive power generating device for transforming magnetic energy into motive power comprising:
- a stationary support member;
an output shaft rotatably mounted on the support member;
a permanent magnet disposed around the rotational output shaft for rotation therewith;
a magnetic body disposed in concentric relationship with said permanent magnet for rotation with said rotational output shaft, said magnetic body being subjected to the magnetic flux of said permanent magnet;
a plurality of electromagnets fixedly mounted on said support member in such a manner that they are spaced a predetermined distance apart around the periphery of said magnetic body, each magnetic circuit of said electromagnets being adapted to be independent of one another;
said magnetic body including magnetic notches and teeth which are disposed alternately in an outer peripheral portion thereof, each said tooth having an outer corner which is forwardly positioned in the rotational direction and has an acute angle configuration so as to cause further convergence of the magnetic flux;
certain of said electromagnets being disposed at positions corresponding to boundary portions between said notches and said magnetic teeth; and
excitation change-over means for said electromagnets to sequentially magnetize one of said electromagnets which is positioned forwardly in the direction of rotation with regard to the outer corner of the tooth so as to give said particular electromagnet a magnetic polarity magnetically opposite to that of the magnetic pole of said permanent magnet, whereby magnetic flux passing through said magnetic body is converged in one direction so as to apply a rotational torque to said rotational output shaft.
1 Assignment
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Accused Products
Abstract
A motive power generating device comprises a permanent magnet disposed around a rotational output shaft for rotation therewith, the output shaft being mounted on a support member for rotation, a magnetic body disposed in concentric relationship with the permanent magnet for rotation with the rotational output shaft, the magnetic body being subjected to magnetic flux generated by the permanent magnet, a plurality of electromagnets fixedly mounted to the support member in such a manner that they are spaced at predetermined distances around the periphery of the magnetic body, each magnetic circuit of the electromagnets being adapted to be independent of one another, and excitation change-over means for the electromagnets, the excitation change-over means being adapted to sequentially magnetize one of the electromagnets which is positioned forwardly with regard to a rotational direction of the rotational output shaft, so as to impart to the particular electromagnet a magnetic polarity opposite to that of the magnetic pole of the permanent magnet, whereby magnetic flux passing through the magnetic body converges in one direction so as to apply a rotational torque to the rotational output shaft. No force opposing movement of a rotor or movable element is generated.
58 Citations
16 Claims
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1. A motive power generating device for transforming magnetic energy into motive power comprising:
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a stationary support member; an output shaft rotatably mounted on the support member; a permanent magnet disposed around the rotational output shaft for rotation therewith; a magnetic body disposed in concentric relationship with said permanent magnet for rotation with said rotational output shaft, said magnetic body being subjected to the magnetic flux of said permanent magnet; a plurality of electromagnets fixedly mounted on said support member in such a manner that they are spaced a predetermined distance apart around the periphery of said magnetic body, each magnetic circuit of said electromagnets being adapted to be independent of one another; said magnetic body including magnetic notches and teeth which are disposed alternately in an outer peripheral portion thereof, each said tooth having an outer corner which is forwardly positioned in the rotational direction and has an acute angle configuration so as to cause further convergence of the magnetic flux; certain of said electromagnets being disposed at positions corresponding to boundary portions between said notches and said magnetic teeth; and excitation change-over means for said electromagnets to sequentially magnetize one of said electromagnets which is positioned forwardly in the direction of rotation with regard to the outer corner of the tooth so as to give said particular electromagnet a magnetic polarity magnetically opposite to that of the magnetic pole of said permanent magnet, whereby magnetic flux passing through said magnetic body is converged in one direction so as to apply a rotational torque to said rotational output shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 15)
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9. A motive power generating device for transforming magnetic energy into motive power comprising:
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a stationary support member; an output shaft rotatably mounted on the support member; a permanent magnet disposed around the rotational output shaft for rotation therewith; a magnetic body disposed in concentric relationship with said permanent magnet for rotation with said rotational output shaft, said magnetic body being subjected to the magnetic flux of said permanent magnet; a plurality of electromagnets fixedly mounted on said support member in such a manner that they are spaced a predetermined distance around the periphery of said magnetic body, each magnetic circuit of said electromagnets being adapted to be independent of one another; said magnetic body including a plurality of notches in the outer peripheral portion thereof, each of said notches being configured so as to gradually increase a gap between said magnetic body and said electromagnets in the rotational direction of said rotor; and excitation change-over means to sequentially magnetize the electromagnets confronting a gap with an intermediate width which are disposed between the electromagnets confronting a gap with a narrower width and a gap with a broader width, so as to impart to them a magnetic polarity opposite to that of the magnetic pole of said permanent magnet whereby magnetic flux passing through said magnetic body is converged in one direction so as to apply a rotational torque to said rotational output shaft. - View Dependent Claims (10, 11, 12, 13, 14, 16)
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Specification