A face mask comprises a sealing collar ( 1 ) extending around the mouth with a shelf ( 4 ) extending under the nose supporting a gel insert ( 7 ) that makes sealing contact between the nostrils and a passage ( 6 ) through the shelf. A curved, rigid window ( 30 ) is a push fit in a central opening ( 2 ) of the collar ( 1 ) and has a gas inlet ( 33 ) attached with it so that the window can be removed or connected with the sealing collar as necessary. The collar ( 1 ) supported on the head by a harness ( 20 ) having two triangular portions ( 21 ) on opposite sides encircling respective ears.
申请公布号
AT400326(T)
申请公布日期
2008.07.15
申请号
AT20030706758T
申请日期
2003.03.05
申请人
SMITHS GROUP PLC
发明人
BATEMAN, TIMOTHY;BISHOP, GILES ANDREW;FIELD, STEPHEN JAMES;LEE, ANDREW JAMES;NEAME, SIMON;PAGAN, ERIC