Stepping motor

Details Stepping motor Stepping motor

2005-08-23

2005-08-23

Lam, Thanh (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S089000

Reexamination Certificate

active

06933631

ABSTRACT:
A stepping motor includes a pair of drive coils arranged to sandwich a magnetic rotor in the axial direction of a rotor shaft in order to decrease the motor size. The drive coils are configured to be annular around the rotor shaft that extends in both directions from the magnetic rotor. A pair of cylindrical yokes are provided to enclose the drive coils. A pair of sintered bearings that support the rotational movement of the rotor shaft are made of a magnetic material, and the cylindrical yokes and the sintered bearings are formed together.

REFERENCES:
patent: 2003/0205941 (2003-11-01), Suzuki et al.
patent: 05-153761 (1993-06-01), None
patent: 11-252890 (1999-09-01), None

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