Electromagnetically driven shutter device

Details Electromagnetically driven shutter device Electromagnetically driven shutter device

1980-12-16

1982-01-26

Gellner, Michael L.

354252, G03B 908

Patent

active

043125832

ABSTRACT:
An electromagnetic device for driving a shutter includes a moving coil which is arranged to rotate in the magnetic field of a stator. A current supply arrangement for supplying exciting current to the moving coil includes a pair of insulated side pieces fixed about the rotational axis of the coil and connected to both terminals of the moving coil, and a pair of elastic rod-shaped brushes pressed against the side pieces on diametrically opposite sides of the rotational axis. A slide surface on each slide piece is provided with at a pair of flatened portions against which the elastic rod-shaped brushes are pressed so as to hold the shutter blades at a stop position.

REFERENCES:
patent: 3953871 (1976-04-01), Borchard et al.

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