Apparel – Guard or protector – For wearer's head
Patent
1981-10-22
1985-04-16
Nerbun, Peter
Apparel
Guard or protector
For wearer's head
200DIG2, 200 6158R, A61F 906
Patent
active
045106258
ABSTRACT:
A switch holder is made from a rubber or a plastic and has an endless ring-like form or an arcuate form cut at both ends to fit a finger of the worker who makes the welding. A switch having a small depression stroke is mounted on the periphery of the switch holder so as to be pressed by the flank of an adjacent finger. Thus, when the worker gripping a safety holder clamping a welding rod by his hand wearing the switch holder increases the gripping force, or when he intentionally increases the gripping force without holding anything, the push button is pressed by the flank of the adjacent finger. A protective mask body electrically connected to this switch accomodates a conversion means for converting the rotation of the shaft of a motor into a linear movement, and a light-shielding plate connected to the conversion means so as to move between a light shielding position where it covers the window of the mask body and a clearing position where it opens the window. The motor is started by the depression of the switch in advance to the generation of the arc to move the light-shielding plate to the shielding position to protect eyes of the worker. Upper and lower limit switches are provided to limit the upward and downward movement of the light-shielding plate.
REFERENCES:
patent: 2516180 (1950-07-01), Brown
patent: 3700835 (1972-10-01), Rackson
patent: 3833936 (1974-09-01), Lo Guidice
patent: 4059830 (1977-11-01), Threadgill
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