Limited rotation motor

Details Limited rotation motor Limited rotation motor

1977-03-23

1979-01-16

Duggan, Donovan F.

Electricity: motive power systems

Reciprocating or oscillating motor

Energizing winding circuit control

310 25, 310 36, 335230, 350 61, H02K 3310

Patent

active

041351193

ABSTRACT:
A limited rotation motor has a stator and a rotor mounted for limited rotation relative to the stator. The stator is constructed to conduct bias flux through magnetic circuits that extend across air gaps between the stator and the rotor and a drive system produces drive flux which is conducted through magnetic circuits that extend across air gaps between the stator and rotor to drive the rotor. The stability of radial rotor position in its support bearings is enhanced by an imbalance in the bias flux magnetic circuits which continually produces a resultant radial force on the rotor so that a well defined radial position of the rotor is maintained over the range of limited rotation that the rotor moves in response to the drive system.

REFERENCES:
patent: RE26749 (1970-01-01), Montagu
patent: 2829324 (1958-04-01), Sargeant
patent: 2930945 (1960-03-01), Weathers et al.
patent: 3329916 (1967-07-01), Carson
patent: 3434083 (1969-03-01), Lewis
patent: 3435393 (1969-03-01), Meisel
patent: 3517360 (1970-06-01), Gray
patent: 3668672 (1972-06-01), Parnell
patent: 3970979 (1976-07-01), Montagu

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