Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1977-08-18
1979-07-31
Duggan, Donovan F.
Electrical generator or motor structure
Dynamoelectric
Rotary
310254, H02K 2178
Patent
active
041631650
ABSTRACT:
A permanent magnet motor is provided which has first and second U-shaped sections comprising the motor stator. Each section is constructed of low reluctance magnetic material. The motor armature shaft passes through a hole in the bight of each section and carries a commutator. An air space separates the bight and shaft to provide a high reluctance path to the shaft. The two parallel sides of the first section fit between the two sides of the second section in a contact relation; the combination defining a two piece magnetic circuit that passes around the motor from end to end. The first section contains a permanent magnet mounted upon each of the sides at diametrically opposite locations adjacent the armature. The flux coupling the two magnets passes through the armature core. The magnets define a pole pair and are spaced very close to the edge of the armature core to minimize the air gap between the armature and the magnet. The first section is unbroken and provides a homogeneous flux path between the magnets. The second section provides a parallel-secondary flux path from the magnets. Additional low reluctance material is included on the bight of each section to compensate for the increased reluctance resulting from the hole through which the armature passes. Positioning stops are provided on the second section, which contact the first section as it is positioned, to establish the proper distal relation between the bights to accommodate the armature and commutator.
REFERENCES:
patent: 3090877 (1963-05-01), Baumhart
patent: 3135887 (1964-06-01), Schaffan
patent: 3401282 (1968-09-01), Zagovski
patent: 4118644 (1978-10-01), Schulte et al.
Duggan Donovan F.
Eltra Corporation
Greenstien Robert E.
LandOfFree
Permanent magnet motor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Permanent magnet motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Permanent magnet motor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-23981