Apparel – Guard or protector – For wearer's head
Patent
1977-01-17
1980-01-29
Troutman, Doris L.
Apparel
Guard or protector
For wearer's head
A42B 100
Patent
active
041853288
ABSTRACT:
An improved arc welder's helmet and window assembly for protecting the welder's face and eyes from sparks and flying particles and also from visual and other radiation emitted from his own work and from other sources about and behind the helmet. The helmet is conventional and has a cylindrical forward face curved about its vertical axis, and is preferably made of rigid, light and spark-proof construction and material with a conventional rectangular forward opening covered by a window assembly including a darkened pane or so-called lens. The window assembly comprises a conventional forwardly disposed first frame part on the outside of the helmet with a concave, rectangular, perimetric flange bearing on the front face of the helmet all around the window opening, and also comprises a rearwardly disposed second frame part on the inside of the helmet with a complementary, convex, perimetric flange adapted to bear on the interior surface of the helmet all around the said window opening. A back-light mask or guard has novel coaction with the helmet, window and welder and has a convex, rectangular flange at its forward end which is of substantially the same size and form as the flange on the said second frame part and is disposed and squeezed perimetrically around said opening between the interior surface of the helmet and the flange of second frame part when said frame parts are clamped together tightly. The back-light guard is hollow, yielding and opaque, and it extends rearwardly and tapers outwardly from the window opening to fit comfortably and closely with the brow, temples, nose and face of the welder and excludes all light and other radiation from reaching the rearward surface of the window and being reflected toward the eyes of the welder. The guard and second frame part may be bonded together and/or made for use as a unit.
REFERENCES:
patent: 1205308 (1916-11-01), Work
patent: 2363461 (1944-11-01), Huntsman
patent: 3267807 (1966-08-01), Snope et al.
patent: 3868726 (1975-03-01), La Marre et al.
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