WELDING OPERATOR MASK AND METHOD FOR MAKING IT Russian patent published in 2006 - IPC B23K9/32 B23K37/00 A61F9/06 

FIELD: attachments for protecting faces, eyes, respiratory system of welding operators during welding procedures, namely masks and method for making them.

SUBSTANCE: mask includes three-dimensional body of composition material formed by front, lateral, upper and lower walls. Front wall is rectangular one; upper and lower walls are in the form of isosceles trapezium; lateral walls are trapezoidal ones. All walls are formed of one blank. In cavity of mask there is unit for securing it to head of welding operator. In mean zone of front wall there is box frame extending outside and made as one piece with said wall. On inner surface of mask body along each angle formed by walls there are embossed portions or grooves for reducing flexure resistance of walls. П-shaped in cross section rigidity ribs are formed on outer surfaces of front, lateral, upper and lower walls, ribs are shifted relative to embossed portions or grooves and designed for increasing flexure resistance of walls. Flexure portion of wall is arranged between faces of rigidity ribs closed along perimeter of each wall. Lateral, upper and lower walls, upper and lower portions of front wall are convex outside. Mean central portion of front wall around box frame is flat one. On outer surfaces of lateral walls there are thickened portions arranged crosswise, supporting axle of mask mounting means and having concentrically formed radial grooves for fixing member of mask mounting means.

EFFECT: enhanced ergonomic properties, improved strength, small mass of mask.

4 cl, 19 dwg