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AssigneeAvon Protection Systems, Inc.
InventorsDavid K. Friday, John Schlaechter, Wayne E. Ballantyne, Robert J. Puhala, David W. Pike
Estimating the term…
A filter for a gas mask has a concave outlet wall and a convex inlet wall with a particulate filter bed that has a uniform depth and conforms substantially to the shape of the inlet and outlet wall. The side wall can have an elliptical, circular or convex shape to conform to the curvature of the wearer's face, or a planar shape. The filter an be a double particulate filter element and a double adsorption filter element configured for axial airflow therethrough with a bifurcated flow pattern. The adsorption filter element comprises a granulated charcoal, a composite material having carbon particles combined with binder particles, or an immobilized bed of charcoal granules and EVA-coated fibers.
A filter canister for a gas mask having a housing with an upper wall, a lower wall, and a side wall, an inlet opening in the upper wall and an outlet opening in the lower wall, the lower wall further including a connector, defining the outlet opening, for removably mounting the canister to the gas mask, and at least one filter element within the housing and forming an axial airflow path between the inlet and the outlet openings, wherein:
Dependencies are inferred from the claim text.