WELDER'S HELMET Russian patent published in 1994 - IPC

FIELD: face protecting means. SUBSTANCE: helmet has casing provided with peephole, two frames, one of which is motionless and has a substrate and movable frame provided with protective light filter and rotary mechanism. Rotary mechanism is made in form of lamellar spring which has end connected to the casing. Helmet also has axis with U-shaped curve in its central part for interaction with free end of the spring. Two rests of the helmet are mounted onto the base of rotary frame. Sunlight filter is used as the substrate. EFFECT: improved quality of protection. 2 dwg