Self-darkening shield for replaceably attaching to a torch

Electric heating – Metal heating – Weld rod composition

Reexamination Certificate

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Reexamination Certificate

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07126085

ABSTRACT:
A self-darkening shield for replaceably attaching to a torch. The self-darkening shield includes a shield and apparatus. The shield replaceably attaches to the torch, is self-darkening, and is a plate that is substantially inverted U-shaped to straddle the torch to provide shielding not only above the torch but also to its sides. The apparatus is operatively connected to the shield and replaceably attaches the shield to the torch.

REFERENCES:
patent: 1217838 (1917-02-01), Schmidt
patent: 2410306 (1946-10-01), Romberg
patent: 4155122 (1979-05-01), Budmiger
patent: 4494873 (1985-01-01), Perlmutter et al.
patent: 5241154 (1993-08-01), Estrate
patent: 5802622 (1998-09-01), Baharad et al.
patent: 5854461 (1998-12-01), Sorenson
patent: 6070264 (2000-06-01), Hamilton et al.
patent: 6161590 (2000-12-01), Wulff
patent: 6172334 (2001-01-01), Harris et al.

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