Method of making a limited-rotation motor with integral displace

Details Method of making a limited-rotation motor with integral displace Method of making a limited-rotation motor with integral displace

1977-04-08

1978-09-05

Hall, Carl E.

Metal working

Electric condenser making

Solid dielectric type

29596, 310 29, 310 36, 310 38, 335229, 361298, H01G 402, H01G 440

Patent

active

041108795

ABSTRACT:
The armature of a limited-rotation motor which rotates about an axis relative to a stator is extended axially beyond the stator between arcuate, non-magnetic capacitor plates disposed in a cylindrical array coaxial with the rotation axis. The capacitor plates are connected in a bridge circuit whose output is a selected function of armature displacement. The capacitor plates are installed at the end of the motor stator during assembly of the motor as tines of a unitary slotted bushing that is reamed simultaneously with the motor stator, following which the bushing is circumferentially cut to electrically isolate the bushing tines to form the individual plates.

REFERENCES:
patent: RE26749 (1970-01-01), Montagu
patent: 3517282 (1970-06-01), Miller

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