Surgery – Respiratory method or device – Means for removing substance from respiratory gas
Reexamination Certificate
2005-11-22
2005-11-22
Mitchell, Teena (Department: 3743)
Surgery
Respiratory method or device
Means for removing substance from respiratory gas
C128S207180, C055S484000, C055SDIG035
Reexamination Certificate
active
06966318
ABSTRACT:
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.
REFERENCES:
patent: 443191 (1890-12-01), Illing
patent: 533854 (1895-02-01), Loeb
patent: 706015 (1902-08-01), Breen
patent: 1221246 (1917-04-01), Travers
patent: 1691648 (1928-11-01), Drager
patent: 4200092 (1980-04-01), Warncke et al.
patent: 6684882 (2004-02-01), Morine
Chang Chin-Hsiang
Tsuug Sun-Ming
Chang Gung University
Kamrath Alan D.
Mitchell Teena
Nikolai & Mersereau , P.A.
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