Low temperature breathing apparatus
OwnerMark E. Geaghaninventor
Life of this patent
Estimating the term…
Abstract
A breathing apparatus for use by mountain climbers and others operating in low temperature atmospheres utilizes body heat and perspiration to warm and humidify the air from the atmosphere as it is inspired by the user. A hose-like element is positioned adjacent to the body and inside the clothing. The element is of a porous construction to permit passage of air and equipped with auxiliary holes for the same purpose. An inlet valve connects to the outer atmosphere and a filter and a connector lead to a face mask positioned against the nose and mouth of the user. An outlet check valve completes the apparatus.
Claims4
A breathing apparatus for inhalation of low temperature air by a person comprising:
- a tubular member having perforations linearly disposed therein and adapted for contact against said person's body inside his outer garments and having a first end and a second end;
- a face mask disposed for positioning against the nose and mouth of the user;
- a hollow tube positioned on said face mask and connecting the interior of said mask with said first end of said tubular member;
- a support member positioned on said face mask and connecting with said second end of said tubular member;
- valve means disposed to admit air from outside said outer garments to the interior of said tubular member;
- valve means to permit passage of air from the interior of said mask to the exterior only.
Dependencies are inferred from the claim text.