A vent insert for a mask having a base and one or more grill components coupled to the base to selectively define fine, porous vent orifices through the insert
FRATER, ROBERT HENRY,VELISS, LEE JAMES,KENYON, BARTON JOHN,JUDSON, DANIEL ROBERT,NG, EVA,HENRY, ROBERT EDWARD,OLDENBURG, ALISON,REID, MICHAEL JOHN,FLOWER, RENEE FRANCES (NEE DOHERTY)
申请号：
NZ59130908
公开号：
NZ591309A
申请日:
2008.08.25
申请国别(地区):
NZ
年份:
2012
代理人:
摘要：
A vent insert for a mask and a mask including the vent insert is disclosed. The vent insert for a mask comprises: a base including one or more cross-bars； and one or more grill components provided to the base, where each grill component includes a grill. The one or more grill components are stackable on top of the base and are selectively rotatable with respect to the base so as to selectively define fine, porous vent orifices through the insert. The base and one or more grill components are interlockable with one another
