Electrical generator or motor structure – Dynamoelectric – Reciprocating
Patent
1983-12-27
1985-07-09
Duggan, Donovan F.
Electrical generator or motor structure
Dynamoelectric
Reciprocating
310 22, 310 80, 310 83, H02K 3300
Patent
active
045284687
ABSTRACT:
A digital linear actuator capable of converting pulsed electrical current into positive and precise increments of linear motion. The actuator includes a threaded shaft which is prevented from rotating, a cylindrical rotor threaded on the shaft, and drive means spaced from the rotor and operative in response to a pulse of electric current to engage the rotor and turn the rotor through a predetermined arc, thereby causing linear motion by either the rotor or the shaft in the direction of the longitudinal axis of the shaft. Preferably the rotor circumference is toothed, and the drive means include an electromagnet which, when energized by a pulse of current, causes movement of a pivoted finger; when the finger moves, a flexible reed attached at one end thereof engages one of the rotor teeth and causes rotation of the rotor.
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Duggan Donovan F.
Long Charles J.
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