MASK WITH MEANS FOR PASSING OUT THE EXPIRATION OF AIR

MASQUE AVEC DISPOSITIF PERMETTANT D'EXPIRER L'AIR

English Abstract

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.

Claims

What is claimed is:
1. 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, and characterized
in that said body has a nose portion worn over the nose,
an oval hole below said nose portion, 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 having one-way valve means for
passing out the expiration of air from the lungs.

Description

j 2~073
MASK WITH MEANS FOR PASSING OUT THE EXPIRATION or AIR
BACKGROUND OF THE INVENTION
The present invention relates -to maskæ.
More particularly, the present invention relates to a
mask worn over the nose and mouth to prevent inhaling
harmful substances, which has means for passing out the
expiration of air from the lungs.
Various masks have been known and used for
different purposes. In order to effectively prevent
inhaling harmful substances, filtering substances or
devices may be provided. However, wearing a mask for a
10 long length of time makes one feel uncomfortable.
Further, during the act of expiration, hot moisture is
simultaneously carried out of the nose. If an user
worn a pair of glasses, the glasses may be fogged by the
expiration of air from the lungs. When a pair of
15 glasses is fogged, it must be cleaned so as not to
obstruct the sight.
S~MMARY_OF THE INVENTION
The present invention has been accomplished
under the aforesaid circumstances. It is therefore
20 an object of the present invention to provide a mask

2 ~ 7 3
which has rneans for passing out the expiration of air
from the lungs. It is another object of the present
invention to provide a mask which eliminates the problem
of fogging during the ac-t of breathing out. It is
still another object of the present invention to provide
a mask which helps the user breathe smoothly. It is
still ano-ther object of the presen-t invention to provide
a rnask which is easy and inexpensive to manufacture.
It is still another object of the present invention to
provide a mask which has many uses.
ccording to the present invention, there is
provided a mask comprised of 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. The air
filtering lining may be comprised of active carbon or
cotton filter for removing harmful substances from the
air passing therethrough. Rele,asable fastening means
may be used for connecting the belts together. The
body has a nose portion worn over the nose, an oval hole
spaced from the nose portion in a lower place, a
flexible -taper pipe connected to said oval hole for

20S107~
passing out the expiration of air from the lungs, and a
protective covering covered over the flexible taper
pipe. The flexible taper p~pe may be made from a
flexible r~bber or plastic material having capillary
tubes or pieces of films on the inner wall thereof or
passing out the expiration of air from the lungs, which
block up the air passage during the act of drawing
breath into the lungs.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is an exploded view of the preferred
embodiment of the masl~ embodying the present invention;
Fig. 2 illustrates an use of the present
invention worn over a person's nose and mouth for
protection;
Fig. 3 is a partly sectional view of Fig. 2,
showing that the expiration of air from the user has
been sent out of the mask through the flexible exhaust
pipe; and
Fig. 4 is another partly sectional view of
Fig. 2, showing that currents of outside air have been
drawn in the mask.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to Fig. 1, a mask in accordance
,~ . .. .

20~1~73
with the present invention is generally comprised of a
body 1, an exhaust pipe 2, and a protective covering 3.
The body 1 may be made from non-woven cloth or any of a
variety of materials æuitable for filtering the air, in
size and shape suitable for covering over the nose and
mouth smoothly comfortably. As illustra-ted, the body 1
comprises a curved top edge 4, a nose portion 5
extending dowrlwards from said curved top edge 4 at the
middle, a pipe holder 6 in an oval shape inside said
nose portion 5 at a bottom for holding the exhaust pipe
2, a curved surface portion 7 bilaterally extending
downwards from said nose portion 5 for securing the
protective covering 3, a layer of air filtering lining
8, a plurality of vents 9 through said air filtering
lining, a border edge lO around the peripheral edge
thereof, and two opposite fastening belts 11, 12 at two
opposite sides for fastening to the head by male and
female fastening elements 13, 14. The air filtering
lining 8 may be comprised of active carbon or cotton
filter for removing toxic gas from the air passing
therethrough. Male and female velcro strips may be
used for fastening the astening belts 11, 12 so that
they can be conveniently resealably connected together
for securing the mask to the head. The exhaust pipe 2
,

2~61~73
is made from a flexible rubber or plastic material in
the shape of a taper pipe suitable for inserting through
the pipe holder 6, having an outward flange 15 around
the wider end thereof and defining an air passage 18
therein. The outward flange 15 is slightly bigger
than the inner diameter of the pipe holder 6 so that the
exhaust pipe 2 can be firmly supported on the exhaust
pipe 2 when it is inserted therein. The protective
covering 3 may be made from a non-woven cloth or any
suitable material for protecting the exhaust pipe 2.
It may be secured to the body 1 over the curved surface
portion through the process of stitching or press
sealing.
Referring to Figs. 2, 3 and 4, the operation
,15 and effects of the present invention will be understood
from the following description. By fastening the
fastening elements 13, 14 of the belts 11, 12 together,
the mask 16 is firmly secured to an user's head and
covered over hies ~her) nose and mouth. When the
mask 16 has been worn over an user's nose and mouth, a
gap 17 is maintained between the user's nose and the
pipe holder 6. Therefore, outside air can be drawn
through the vents 9 and the gap 17 into the user's
lungs the expiration of air from the user's lungs can

- 2~61 ~ 73
be exhausted out of the mask 16 through the exhaust pipe
2 (see Fig. 2 and 3). This eliminates the problem of
fogging on the glasses caused by the expiration of hot
air from an user's lungs. ~uring the act o drawing
S breath into the lungs, as shown in Fig. 4), the air
passage 18 of the exhaust pipe 2 will be automatically
blocked by the capillary tubes or pieces of films on the
peripheral wall therein and the moisture- left from
previous expiration of air. Therefore, only the air
which passes through the vent 9 will be drawn into the
lungs, i.e. inhaled air is treated through the
filtration of the layer of air filtering cloth 8.
,,
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Representative Drawing