ELECTROMAGNETIC STEPPING MOTOR Russian patent published in 2004 - IPC

FIELD: electrical engineering; electromagnetic stepping motors.

SUBSTANCE: novelty is that helical cylindrical torsion spring of motor is made of bimetal whose layer directed inwardly toward output shaft is made of flexible ferromagnetic material and that directed outwardly, of ferromagnetic material possessing magnetostrictive effect; spring is disposed between field coils separated in axial direction and secured through its central part in case with aid of axially flexible member for rigid fixation; end portions of spring are loosely entered in extreme parts of axial holes in respective field coils.

EFFECT: simplified design and enhanced reliability.

1 cl, 1 dwg