FIELD: means for protection of respiratory organs. SUBSTANCE: helmet mask 1 has a visor covered with transparent face shield. Mask peak 3 is positioned with a clearance 5 to the external side of the shield. Pipe 6 supplying air into clearance 5 communicates with air source. Face shield 2 is convex. The curvature of peak 3 is identical with that of face shield 2 under the peak. There is a uniform clearance 5 between shield 2 and peak 3. EFFECT: higher heat resistance and retention of optical characteristics of helmet. 2 dwg
Title | Year | Author | Number |
---|---|---|---|
PROTECTIVE HELMET | 2003 |
|
RU2252049C2 |
ARC-WELDING HELMET | 1990 |
|
RU2068283C1 |
HELMET | 0 |
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PROTECTIVE MASK | 1992 |
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WELDER'S HELMET | 2006 |
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RU2309714C1 |
ARRANGEMENT FOR PROTECTING MANЪS HEAD FROM HEAT RADIATION | 0 |
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PROTECTIVE FACE SHIELD | 2020 |
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WELDER'S PROTECTIVE MASK | 1991 |
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RU2200600C1 |
Authors
Dates
1995-03-10—Published
1990-03-26—Filed