Welding mask corona barrier

Details Welding mask corona barrier Welding mask corona barrier

1980-01-14

1982-10-19

Nerbun, Peter P.

Apparel

Guard or protector

For wearer's head

A61F 906

Patent

active

043542794

ABSTRACT:
A corona barrier insert for a welding mask having a shield section and a main frame defining a viewing port in the shield section and a lens assembly including an outer pane made of glass and an inner pane of tinted glass to block out harmful rays. The corona barrier insert is made of a semi-rigid opaque plastic material and is of a configuration to engage in the frame defining the viewing port in a manner to block or prevent a corona or halo effect about the periphery of the lens stack.

REFERENCES:
patent: 3112490 (1963-12-01), Malcom, Jr.
patent: 4185328 (1980-01-01), Graveno

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