Electromagnetically driven shutter

Details Electromagnetically driven shutter Electromagnetically driven shutter

1981-02-09

1982-09-07

Hix, L. T.

354234, 354264, G03B 922

Patent

active

043480926

ABSTRACT:
In an electromagnetically driven shutter with a rotor having a conductive coil pattern and a stator with permanent magnets arranged thereon to form a magnetic field in which the rotor is driven to rotate, the rotor is provided with a return spring urging the shutter blades in a closing direction while nevertheless preventing bouncing of the rotor resulting from operation of the return spring when the shutter blades are fully opened.

REFERENCES:
patent: 2969007 (1961-01-01), Groger
patent: 4167313 (1979-09-01), Tsonefuji
patent: 4176929 (1979-12-01), Ito et al.

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