Linear motor

Details Linear motor Linear motor

1986-08-25

1988-08-02

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Linear

318135, H02K 4100

Patent

active

047615737

ABSTRACT:
A linear DC motor adapted for driving a positioning table having a frame and a table displaceable in a linear direction has a toothed assembly affixed to one element thereof and an array of permanent magnets facing the toothed assembly mounted on the other element. Coils wound around the teeth of the toothed assembly and appropriately energized by DC produce a linear force which is effective to displace the table in a desired direction. When used with a position sensor and an appropriate control system, the table is controllable to a desired position. A set of brush members depending from the table contact a developed linear slip ring track for energizing the coils and for switching polarity of voltage to the coils at appropriate locations. In an embodiment where the coils are stationary on the frame and the magnets are disposed on the table, a power pickup arrangement movable with the brush members is incorporated into the brush and developed slip ring apparatus.

REFERENCES:
patent: 4151447 (1979-04-01), von der Heide
patent: 4369383 (1983-01-01), Langley

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