| 摘要 |
This invention relates to respirator, a half face mask with the shape of a concave-rectangular cup that fits the facial features comfortably. The mask covers user's mouth and nostrils to provide a breathing chamber and has three opening ports, one on the bottom receiving the filter cartridge and two of the same dimension on the sides receiving the exhalation tubes. The three components are grooved-fitting embedded into the mask and have one-way air flow functionality controlled by the mean of flapper valve mechanism. The filter cartridge contains layers of mesh and chemical compounds to filter dust particles, destroy carbon monoxide and absorb other toxic gases. The present invention offers a respirator having the functionality of a gas mask but aesthetic-simplicity shape of a half face mask which commuters can conveniently wear in polluted metropolitan or hazardous atmosphere to prevent dust particles and toxic gases go into wearer's lung. |
