Polyphase motor, particularly for driving an indicator needle

Details Polyphase motor, particularly for driving an indicator needle Polyphase motor, particularly for driving an indicator needle

1997-10-21

1999-03-09

Ramirez, Nestor

Electrical generator or motor structure

Dynamoelectric

Rotary

310156, H02K 2112

Patent

active

058805516

ABSTRACT:
A polyphase motor formed by a stationary member excited by electric coils and by a magnetized rotor. The rotor has N pairs of poles magnetized radially in alternating directions, N being equal to 4 or 5. The stationary member has at least two W-shaped circuits each including an electric coil surrounding the central strut. The W-shaped circuits are arranged so that when one of the central struts is opposite a magnetic transition, the other central strut is roughly opposite a magnetic pole. Pole shoes of the central struts of the two W-shaped circuits can also be spaced at 120.degree. angles.

REFERENCES:
patent: 4220882 (1980-09-01), Kahzai et al.
patent: 4275322 (1981-06-01), Cavil et al.
patent: 4475051 (1984-10-01), Chai et al.
patent: 4769567 (1988-09-01), Kurauchi et al.
patent: 5682072 (1997-10-01), Takahashi
patent: 5708406 (1998-01-01), Tsunoda et al.

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