Respirator mask with stiffening elements

Details Respirator mask with stiffening elements Respirator mask with stiffening elements

1995-06-07

1997-01-14

Burr, Edgar S.

Surgery

Respiratory method or device

Means for removing substance from respiratory gas

12820617, 12820628, A62B 1808, A62B 904

Patent

active

055929370

ABSTRACT:
The present invention provides a respirator mask having a very soft, compliant facepiece that has several stiffening elements integrated therein. The respirator mask preferably includes an exhalation valve and a pair of filter cartridges. It also has a yolk which complements the facepiece and provides for attachment of a harness to secure the respirator mask to the user's face. The respirator mask is lightweight and extremely comfortable due to the novel facepiece made of three stiffening elements which are completely surrounded by and bonded to a flexible material.

REFERENCES:
patent: 2205368 (1937-10-01), Whipple
patent: 2652828 (1953-09-01), Matheson
patent: 2706983 (1955-04-01), Matheson et al.
patent: 3633575 (1972-01-01), Brumfield
patent: 4414973 (1983-11-01), Matheson et al.
patent: 5062421 (1991-11-01), Burns et al.

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