Protective device for protection against radiation during weldin

Details Protective device for protection against radiation during weldin Protective device for protection against radiation during weldin

1976-12-23

1979-10-02

Stern, Ronald J.

Stock material or miscellaneous articles

Composite

Of bituminous or tarry residue

350166, 428428, 428433, G02B 528, G02B 523

Patent

active

041696557

ABSTRACT:
A protective device is disclosed which is useful in protecting an operator against radiation emitted during welding. The protective device, which is employed in the presence of a surrounding light source, includes an interference filter which has a spectrally selective portion with bands for one or more of the ranges of wavelengths present in the emission spectrum of the surrounding light source and a radiation absorbing portion which attenuates the radiation to a value harmless to the eye without interfering with the spectrally selective portion of the interference filter.

REFERENCES:
patent: 3042542 (1962-07-01), Anders
patent: 3269267 (1966-08-01), Collins
patent: 3499697 (1970-03-01), Edwards
patent: 3516720 (1970-06-01), Mauer
patent: 3528726 (1970-09-01), Austin
patent: 3649359 (1972-03-01), Apfel et al.
patent: 3679291 (1972-07-01), Apfel et al.
patent: 3756692 (1973-09-01), Scott
patent: 3914516 (1975-10-01), Ritter
patent: 4045125 (1977-08-01), Farges
patent: 4048039 (1977-09-01), Daxinger

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