US Patent 8381312 Welding mask

A welding mask including a mask body for covering an entire face of a wearer having an opening portion corresponding to eyes of the wearer thereof; a rotatable cover rotationally coupled to a front of the mask body upward and downward; a shading filter mounted on the rotatable cover so as to shade a light generated during welding operation thereof; an elastic coupling means for rotationally coupling the rotatable cover to both side surfaces of the mask body upward; and a fixing means for fixing the rotatable cover or releasing a fixing status thereof formed at one side of the mask body. In addition, a window is further formed at the rear portion of the rotatable cover having the shading filter, thereby improving operation efficiency.