Efficient electromagnetic actuator usable as photographic shutte

Details Efficient electromagnetic actuator usable as photographic shutte Efficient electromagnetic actuator usable as photographic shutte

1982-05-03

1983-10-04

Gonzales, John

Electrical generator or motor structure

Dynamoelectric

Rotary

310 13, 310 27, G03B 908, H02K 3318

Patent

active

044075782

ABSTRACT:
An electromagnetic actuator is disclosed comprising a core assembly including a plurality of pairs of permanent magnets aligned along a given axis. Each of the pairs of magnets have like magnetic poles facing each other and opposite magnetic poles facing away. The pairs of magnets are spaced apart along the given axis and opposite poles of adjacent pairs face each other. Regions of high density magnetic lines of flux of opposite polarity extend generally transversely of the given axis from adjacent pairs. Included are means for providing a low magnetic reluctance between the spaced apart adjacent pairs. Also included are means for defining a continuous low reluctance path extending alongside the core from the magnetic pole forming one end of the core to the magnetic pole forming the other end thereof and spaced over the regions of high magnetic density so as to define magnetic gaps to the core in the area of the regions. Electrical conductors are supported within the magnetic gaps for translational movement relative to the core.

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patent: 4306793 (1981-12-01), Date et al.
patent: 4326786 (1982-04-01), Uchiyama et al.

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