Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1976-03-04
1978-08-01
Duggan, Donovan F.
Electrical generator or motor structure
Dynamoelectric
Rotary
310163, 310164, 310 41, H02K 2114
Patent
active
041045521
ABSTRACT:
A synchronous motor of improved construction characterized by a large diameter rotor mounted in axially juxtaposed parallel relation to the stator coil or coils, rather than within the interior of the stator coil or coils; the stator coil or coils being of substantially the same diameter as the rotor and having stator pole pieces circumscribing the rotor at the outer periphery of the coil or coils, rather than the inner periphery of the coils.
In the preferred construction, first and second annular electrical coils of given outer diameter are positioned on opposite sides of a coaxially mounted wheel-like rotor of substantially equal outer diameter. A pair of circular plates of magnetically permeable material are positioned adjacent opposite sides of each coil perpendicular to the axis thereof, and have tooth-like flanges extending axially from their outer edges adjacent the outer periphery of the rotor, whereat the ends of the flanges of each pair of plates define a plurality of interleaved poles. The periphery of the rotor is of permanent magnet material having alternating north and south poles formed circumferentially therearound. Upon the application of an a.c. voltage across the coils, adjacent poles formed by the flanges of each pair of plates become of opposite magnetic polarity, and alternate polarity with each half cycle of the a.c. voltage, to turn the rotor.
Maximum torque may thus be produced within given dimensional tolerances due to maximization of the effective moment arm of the rotor and maximization of the number of windings accommodated by the coils.
REFERENCES:
patent: 2019683 (1935-11-01), Kohlhagen
patent: 3092743 (1963-06-01), Van Ott et al.
patent: 3205383 (1965-09-01), Hurst
patent: 3416017 (1968-12-01), Krug
patent: 3502921 (1970-03-01), Sazuki et al.
patent: 3881243 (1975-05-01), Bannon
patent: 3898488 (1975-08-01), Erwin et al.
patent: 3978354 (1976-08-01), Lee et al.
Duggan Donovan F.
Merkle-Korff Gear Co.
LandOfFree
Synchronous motor structure does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Synchronous motor structure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Synchronous motor structure will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1981523