US6134716A Disposable smoke mask with replaceable filter

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US6134716A - Disposable smoke mask with replaceable filter ...

A smoke mask including a hood adapted to fit over a user's head, the hood having a front section adapted to be placed in front of a user's face; and a filter extending through the hood. The filter having support frame having a filter cartridge receiving opening, a replaceable cartridge containing at least one filtration medium positioned within the opening, and at least one releasable ...

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US4870959A - Protective breathing mask - Google Patents

A protective breathing mask comprising fire-resistant stretchable material shaped as a hood for wearing over and enclosing the head. An access opening allows the head to be placed therethrough such that a substantially airtight closure is provided at the neck. In one embodiment, portions of the mask are removed at eye and mouth locations whereat they are replaced by respective viewing and ...