WELDER'S PROTECTIVE MASK Russian patent published in 1995 - IPC

FIELD: mechanical engineering. SUBSTANCE: this welder's protective mask includes face shield having window, frame carrying light filter, connecting rod to enable it to move relative to face shield and hold-down member to fix movable frame inside face shield. Movable frame can be removed. It is disposed on housing which can be detached from face shield has protective backing securely positioned inside detachable housing which carries movable frame movement limiter. EFFECT: more sophisticated design. 3 cl, 6 dwg