Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1986-12-04
1988-05-31
Budd, Mark O.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 89, H02K 1926
Patent
active
047483610
ABSTRACT:
An electric motor includes a housing, a rotor and a stator. The rotor includes a rotor shaft rotatably supported on the housing. The rotor includes a plurality of disk portions disposed on the rotor shaft coaxially therewith and spaced from each other axially of the rotor shaft. Each of the disk portions has a thickness gradually decreasing radially outwardly thereof. The stator includes a plurality of annular portions disposed on the housing coaxially with the rotor shaft and spaced from each other axially of the rotor shaft. Each of the annular portions has a thickness gradually decreasing radially inwardly thereof. The annular portions and the disk portions are loosely fitted with each other with a gap formed therebetween. Opposed side surfaces of the annular portion and disk portion are conical. Each of the annular portions has a coil disposed in each conical side surface thereof. Each of the disk portions has permanent magnets disposed at least in each conical side surface thereof.
REFERENCES:
patent: 3208269 (1965-09-01), Eccles et al.
patent: 3407320 (1965-11-01), McLean
patent: 3549924 (1970-12-01), Klein
patent: 3906267 (1975-09-01), Coupin et al.
patent: 4127802 (1978-11-01), Johnson
patent: 4187441 (1980-02-01), Oney
patent: 4306164 (1981-12-01), Itoh et al.
patent: 4371801 (1983-02-01), Richter
European Patent Office Search Report (EP 86 11 6915) 9/2/87.
Mochizuki Akira
Ohnishi Kouhei
Budd Mark O.
Mitsubishi Kinzoku Kabushiki Kaisha
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