Mask with means for passing out the expiration of air

Details Mask with means for passing out the expiration of air Mask with means for passing out the expiration of air

A - Human Necessities

62

B

A62B 7/10 (2006.01) A41D 13/11 (2006.01) A62B 18/10 (2006.01) A62B 23/02 (2006.01)

Patent

CA 2061073

MASK WITH MEANS FOR PASSING OUT THE EXPIRATION OF AIR ABSTRACT OF THE DISCLOSURE A mask comprising a body attached with a layer of air filtering lining with vents thereon, and two belts connected to said body at two opposite sides for securing it to the head over the nose and mouth to prevent inhaling harmful substances, wherein said body has a nose portion worn over the nose, an oval hole spaced from said nose portion in a lower place, a flexible taper pipe connected to said oval hole for passing out the expiration of air from the lungs, and a protective covering covered over said flexible taper pipe. Said flexible taper pipe may be made from a flexible rubber or plastic material having capillary tubes or pieces of films on the inner wall thereof for passing out the expiration of air from the lungs, which block up the air passage during the act of drawing breath into the lungs.

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