Electromagnetically driven shutter

Details Electromagnetically driven shutter Electromagnetically driven shutter

1981-01-05

1982-07-06

Hix, L. T.

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Retarded or delayed type

335219, 335222, 335234, 310 29, 310 36, G03B 908, H02K 3316, H02K 3318, H01F 714

Patent

active

043380131

ABSTRACT:
In the disclosed shutter, shutter blades are reciprocatable between exposure start positions and end positions. Reciprocative rotating electromagnetic drive sources with stators and rotors reciprocate the shutter blades. Magnetic members on the stator facing the rotors hold the latter at positions corresponding to the blades' start positions and are movable to vary the gaps formed between the rotors and themselves.

REFERENCES:
patent: 3158796 (1964-11-01), Musgrave
patent: 3587014 (1971-06-01), Nador
patent: 3735303 (1973-05-01), Harden
patent: 3818690 (1974-06-01), Schwarzschild

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