Respirator for only filtering air inhaled
OwnerChin-Chia Liuinventor
Life of this patent
Estimating the term…
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.
Claims4
A respirator for only filtering air inhaled comprising a nose-cover portion and a mouth-cover portion, each of said portions having a lug at each side, a strap, said strap passing through each of said lugs to fasten said portions together to form a single mask;
- both said nose-cover portion and said mouth-cover portion having identical exhausting holes, and each said exhausting hole having a valve flap which serves as a check valve to prevent inhalation through the exhausting hole;
- said mouth-cover portion being made of an airtight material;
- said nose-cover portion including an upper and lower layer of plastic net;
- said upper layer of plastic net being liftable to facilitate the clamping of a filter, such as gauze, between said two layers so as to filter air inhaled through the nose.
Dependencies are inferred from the claim text.