Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1982-05-14
1984-07-10
Duggan, Donovan F.
Electrical generator or motor structure
Dynamoelectric
Rotary
H02K 2128
Patent
active
044595000
ABSTRACT:
A magnetic field pole assembly for a direct-current motor comprises a nonmagnetic support member, a plurality of even pole pieces disposed in the support member and angularly spaced in symmetrical relationship around a central axis of the support member, a pair of permanent magnets mounted one on each side of each pole piece and having like plarities confronting each other across the pole piece, and yokes disposed between adjacent pole pieces and connected to and between those adjacent permanent magnets which are mounted on the adjacent pole pieces. Each of the permanent magnets is in the form of a plate magnetized in the direction of plate thickness and having one magnetic pole surface secured to a side of one of the pole pieces.
REFERENCES:
patent: 3693037 (1972-09-01), West
patent: 3836802 (1974-09-01), Parker
Duggan Donovan F.
Sumitomo Special Metal Company Limited
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