| 摘要 |
A respirator mask for filtering breathed air including a mask portion dimensioned for covering the mouth of the user. The mask portion includes an inner portion, an outer portion, and an air chamber therebetween. The mask portion includes a generally circular peripheral edge. The peripheral edge includes a top edge, a bottom edge, and opposed side edges. The mask portion includes a recessed mouth section on the inner portion thereof. The recessed mouth section includes a central aperture in communication with the air chamber. The mask portion includes a pair of air vents secured to the outer portion thereof. The pair of air vents each have open inner and outer ends. The open inner ends are in communication with the air chamber. A mouthpiece portion is removably coupled with respect to the mask portion. The mouthpiece portion includes a shield portion dimensioned for positioning within the recessed mouth section of the mask portion. The shield portion includes a central opening that is alignable with the central aperture of the recessed mouth section. The mouthpiece portion includes an inner tube having an open inner end and an open outer end. The open outer end is secured to the central aperture of the shield portion. The open inner end is positionable within the user's mouth.
|
