Claims
- 1. An electronic driving device, comprising; a coreless coil energizable by an electric current for developing a magnetic field along an axial dimension of said coreless coil; a first magnetized rotor disposed completely within said coreless coil and mounted for rotation within said coreless coil and having a plurality of circumferentially equi-spaced magnetic poles; a second magnetized rotor mounted for rotation externally of said coreless coil and positioned relative to said first rotor for magnetic coupling therewith and having a plurality of circumferentially equi-spaced magnetic poles, said first and said second rotors having respective axes of rotation defining therebetween a straight line non-colinear with the axial dimension of said coreless coil and intersecting the axial dimensions of said coreless coil, and wherein said second magnetized rotor has a greater number of magnetic poles than the number of magnetic poles of said first magnetized rotor.
- 2. An electric driving device as claimed in claim 1, wherein said first magnetized rotor has two diametrically opposed magnetic poles, and said second magnetized rotor has four circumferentially equi-spaced magnetic poles.
- 3. An electric driving device as claimed in claim 1, wherein a circumferential distance between successive poles of said first magnetized rotor is substantially equal to a circumferential distance between successive poles of said second magnetized rotor.
- 4. An electric driving device as claimed in claim 1, wherein said second magnetized rotor includes a gear concentric with the axis of rotation of said second rotor for driving a gear train upon rotation of said second rotor.
- 5. An electric driving device as claimed in claim 1, wherein said first magnetized rotor has two diametrically opposed poles and said second magnetized rotor has four circumferentially equi-spaced magnetic poles, in combination with a gear train comprising a first pinion mounted for rotation with said second rotor, an intermediate gear engaging said first pinion, a second pinion mounted for rotation with said intermediate gear, a second-hand gear engaging said second pinion, and a second-hand mounted for rotation with said second-hand gear, and wherein the reduction ratio of said gear train between said second rotor and said second-hand is 1:15.
Priority Claims (1)
Number |
Date |
Country |
Kind |
50-57103 |
May 1975 |
JPX |
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RELATED APPLICATION
This application is a continuation-in-part application of prior copending application Ser. No. 686,114, filed May 13, 1976 and now abandoned.
US Referenced Citations (7)
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
686114 |
May 1976 |
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