Respirator for only filtering air inhaled

Details Respirator for only filtering air inhaled Respirator for only filtering air inhaled

1993-02-05

1994-07-26

Asher, Kimberly L.

Surgery

Respiratory method or device

Means for removing substance from respiratory gas

12820617, A62B 710, A62B 1808, A62B 2302, A62B 1900

Patent

active

053319575

ABSTRACT:
A respirator for only filtering air inhaled, which comprises a nose-cover portion and mouth-cover portion for covering a person's nose and mouth respectively; both sides of the two portions have lugs to be fastened together using a strap; each of the two portions has an exhausting hole without filter; the exhausting hole can be closed with a valve flap, and the exhausting hole can exhaust air only. The nose-cover portion includes an exhausting hole, which is mounted around with two layers of plastic nets; the upper plastic net can be lifted up to insert a gauze or a similar filter, which can be clamped between the two layers so as to provide the function of filtering air inhaled only.

REFERENCES:
patent: 216171 (1879-06-01), Foster
patent: 2070241 (1937-02-01), Schwartz
patent: 2216619 (1940-10-01), Lehmberg
patent: 2894508 (1959-07-01), Miles et al.
patent: 3521630 (1970-07-01), Westberg et al.
patent: 4981138 (1991-01-01), Courtney

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