Mask with removable countercurrent exchange module

Details Mask with removable countercurrent exchange module Mask with removable countercurrent exchange module

1983-02-18

1985-06-04

Nerbun, Peter

Apparel

Head coverings

Face coverings

2DIG6, 12820617, 12820628, A42B 118

Patent

active

045205094

ABSTRACT:
A face mask for use in hazardous environments and comprising an elastic sheet for securement about the lower face and head. The sheet is partially folded to define an open area located forwardly of the wearer's nose and mouth and within which area is removably attached a filter body which may also constitute a countercurrent exchange medium. Fabric closure material on the elastic sheet and filter body serves to removably attach the filter body in place. Additional fabric closure strips of the hook and loop type, when mated to one another, hold the elastic sheet in a partially folded shape to define the aforementioned open area. The filter body may be of a fibrous nature or a molded nose cup shape.

REFERENCES:
patent: 2556589 (1951-06-01), Le Duc
patent: 2751904 (1956-06-01), Lewis
patent: 2818857 (1958-01-01), Wilkins et al.
patent: 3152588 (1964-10-01), Rogowski
patent: 4458679 (1984-07-01), Ward
Gershman, "Self Adhering Nylon Tapes", 10-18-58, J.A.M.A., vol. 68, No. 7, p. 930.

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