Nikolai & Mersereau, P.A.
Filtering mask
A filtering mask includes two filtering bodies with a tube connected therebetween. Two sub-tubes on the tube are inserted in the wearer's nostrils. Each filtering body includes two chambers separated by a separation plate through which through holes are defined. One of the chambers is connected to the tube by a sealing pad which can be opened in one direction, and the other chamber includes a filtering member for filtering air coming from outside. The through holes are controlled by a sealing pad, which can be opened when inhaling and closed when exhaling.
Chang Gung University
Y B A B B
Y10S B01D A62B B01D B01D
additional inventional inventional inventional inventional
Chin-Hsiang Sun-Ming
Chang Tsuug