Stepping motor with low detent torque

Details Stepping motor with low detent torque Stepping motor with low detent torque

1988-09-16

1989-10-10

Salce, Patrick R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310162, H02K 3700

Patent

active

048734624

ABSTRACT:
A synchronous motor having peripheral teeth on the rotor magnetized by a permanent magnet and radially inwardly projecting, electromagnetically energized stator teeth. The rotor teeth and stator teeth are skewed relative to each other. The annular arc length subtended by the skew as projected on the cylindrical peripheral envelope of the rotor teeth equals the arc length corresponding to the angular pitch of the rotor teeth divided by an integer between two and four. Each of the rotor teeth projects upon two adjacent stator teeth, and/or each of the stator teeth projects upon two adjacent rotor teeth.

REFERENCES:
patent: 2589999 (1952-03-01), Feiertag et al.
patent: 2982872 (1961-05-01), Fredrickson
patent: 3343014 (1967-09-01), Giles
patent: 4025810 (1977-05-01), Field
patent: 4112319 (1978-09-01), Field
patent: 4385250 (1983-05-01), Welburn
patent: 4424463 (1984-01-01), Musil
patent: 4516048 (1985-05-01), Brigham

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