Electromagnetically driven shutter

Details Electromagnetically driven shutter Electromagnetically driven shutter

1980-06-26

1982-06-08

Hix, L. T.

G03B 908

Patent

active

043337210

ABSTRACT:
An electromagnetically driven shutter of which the leading and trailing curtains are driven by respective electromagnetic drive sources to make a forward and backward movement. The electromagnetic drive sources each have a magnetic winding constructed in a unified form of two coils arranged to be supplied with respective currents flowing in direction opposite to each other so that the forward movement of each of the leading and trailing curtains is followed, after a controlled time interval, by the backward movement thereof.

REFERENCES:
patent: 3604330 (1971-09-01), Fahlenberg et al.

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