Automatic protective shade equipment on protective visors, prote

Details Automatic protective shade equipment on protective visors, prote Automatic protective shade equipment on protective visors, prote

1974-03-19

1976-03-16

Sacher, Paul A.

Apparel

Guard or protector

For wearer's head

2 14K, 351 45, 351 49, G02C 716, G02C 712

Patent

active

039435733

ABSTRACT:
Automatically operable protective means, e.g. a helmet, for use by welders, has an eye shading means which is brought automatically into shading condition upon reception of light rays or ultrasonic vibrations by a transducer and electromagnetic operator. Provision is made for supplying cooling air to the electronic and electromagnetic devices and to the eye shade, and the shade may incorporate movable polarizing plates for adjustment of transparency.

REFERENCES:
patent: 2548230 (1951-04-01), Molyneux
patent: 3095575 (1963-07-01), Radar
patent: 3096430 (1963-07-01), Farr
patent: 3159844 (1964-12-01), Habouch
patent: 3238535 (1966-03-01), Richey
patent: 3245315 (1966-04-01), Marks et al.
patent: 3475765 (1969-11-01), Zeltmann

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