Apparel – Guard or protector – For wearer's head
Patent
1986-08-11
1987-08-18
Nerbun, Peter
Apparel
Guard or protector
For wearer's head
219147, A61F 906
Patent
active
046867112
ABSTRACT:
An eye protection device for the window of a welding hood or shield includes a first stationary screen portion and a second screen portion which is reciprocable toward and away from a position in the window. A drive for the movable screen portion is connected to a control device which has a manually operable switch to initiate movement of the screen toward the window before the commencement of a welding operation. Additionally, an electro-optical sensor is connected to the control device to provide emergency actuation of the drive if the manual switching element is not used. Preferably, the control also includes a timing element connected to the electrooptical sensor which moves the second screen portion away from the window if the welding light is not detected after a certain period of time.
REFERENCES:
patent: 3153135 (1964-10-01), Burmeister
patent: 3833936 (1974-09-01), Lo Guidice
patent: 3838247 (1974-09-01), Finger et al.
patent: 3943573 (1976-03-01), Budmiger
patent: 4071912 (1978-02-01), Budmiger
patent: 4237557 (1980-12-01), Gordon
patent: 4241286 (1980-12-01), Gordon
patent: 4510625 (1985-04-01), Mizuki
patent: 4620322 (1986-11-01), Eggenschwiler
Impexor AG
Nerbun Peter
LandOfFree
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