Stepping motor

Details Stepping motor Stepping motor

1975-05-02

1977-02-01

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310268, H02K 3700

Patent

active

040063755

ABSTRACT:
A rotary stepping motor having high torque and low rotor inertia wherein the rotor is of a disk type configuration having a plurality of uniformly spaced rotor poles and the stator has a plurality of stator pole pairs which are formed in separate groups, the spacing between the stator poles in each group being equal to the rotor pole spacings and the spacings between the stator pole groups being not equal to the rotor pole spacings. The stator may be formed of laminated stator elements to provide a magnetic path with the laminations oriented so as to prevent delamination thereof due to the magnetic forces present during operation. The laminated stator elements are appropriately affixed to the motor housing so that the pole pieces thereof are maintained at preselected positions relative to a reference planar surface of the housing. The rotor poles may be tapered to further reduce the rotor inertia and increase motor speed operation.

REFERENCES:
patent: 3239702 (1966-03-01), Van De Graaff
patent: 3372291 (1968-03-01), Lytle
patent: 3392293 (1968-07-01), De Boo
patent: 3466479 (1969-09-01), Jarret
patent: 3469123 (1969-09-01), Inaba
patent: 3745388 (1973-07-01), Frederick
patent: 3757147 (1973-09-01), Lyman
patent: 3774059 (1973-11-01), Cox
patent: 3784850 (1974-01-01), Inaba
patent: 3803431 (1974-04-01), Inaba

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