Electromagnetic driving source for shutter

Details Electromagnetic driving source for shutter Electromagnetic driving source for shutter

1980-12-15

1982-09-28

Duggan, Donovan F.

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Retarded or delayed type

335222, 310 27, 310 36, 310219, G03B 900

Patent

active

043515967

ABSTRACT:
A moving coil type electromagnetic driving source designed to obtain reliable contact between slide pieces and current supply brushes for supplying current to the moving coil wherein each slide piece is provided with grooves having two inclined surfaces opposed to each other, with an elastic brush having a circular or semi-circular section being provided for each groove such that the brush is in contact with the groove at two points.

REFERENCES:
patent: 3671791 (1972-06-01), Muller et al.
patent: 4079400 (1978-03-01), Kondo

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