Welding helmet removable cartridge

Apparel – Guard or protector – For wearer's head

Reexamination Certificate

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Reexamination Certificate

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06973672

ABSTRACT:
A welding helmet includes a helmet body for covering the face of an operator, an opening in a front surface of the helmet body, a cartridge for protecting the eyes of the operator from light generated during a welding operation, and structure including hooks projected from an upper side of the opening in the helmet body, pressing projections projected from both sides of the opening in the helmet body, hooking projections projected from an upper side of the cartridge to engage with the hooks, and fitting projections from both sides of the cartridge to fit to the pressing projections, the aforementioned structure removably engaging the cartridge to the helmet body. Fumes generated upon welding or cutting are prevented from directly flowing into the helmet body and injurious light generated upon welding is blocked. The cartridge can be readily removed for repair or replacement.

REFERENCES:
patent: 1378255 (1921-05-01), Malcom
patent: 1777701 (1930-10-01), Ramstein
patent: 1833257 (1931-11-01), Norton
patent: 1887654 (1932-11-01), Mahon
patent: 2050890 (1936-08-01), Lynn
patent: 2270028 (1942-01-01), Anderson
patent: 2411224 (1946-11-01), O'Reilly
patent: 2726395 (1955-12-01), Anderson
patent: 3251065 (1966-05-01), Caldwell
patent: 3311922 (1967-04-01), Bezzerides
patent: 4648394 (1987-03-01), Wise
patent: 5533206 (1996-07-01), Petrie et al.
patent: 5548448 (1996-08-01), Wagner
patent: 6185739 (2001-02-01), Verkic et al.
patent: 6357053 (2002-03-01), Wang-Lee
patent: 2139373 (1984-11-01), None
patent: 2225646 (1990-06-01), None

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