Flat, permanent magnet electric motor

Details Flat, permanent magnet electric motor Flat, permanent magnet electric motor

1984-07-30

1986-12-02

Budd, Mark O.

Electrical generator or motor structure

Dynamoelectric

Rotary

310268, 310 67R, H02K 2112

Patent

active

046267271

ABSTRACT:
A flat collectorless motor is described whose rotor has been provided with an axially magnetized annular magnet which cooperates with axial bounding surfaces of the stator poles outside the stator coil ends, which enables the axial height of the stator iron to be reduced without reducing the effective surface area of the stator teeth. This construction enables Hall elements to be mounted on a p.c. board, which Hall elements are arranged in the main field of the rotor magnet.

REFERENCES:
patent: 3922574 (1975-11-01), Whiteley
patent: 3993920 (1976-11-01), Sato
patent: 4194743 (1980-03-01), Ohsawa et al.
patent: 4260915 (1981-04-01), Kawasumi
patent: 4260920 (1981-04-01), Nakamura
patent: 4361776 (1982-11-01), Hayashi et al.

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