MARTIN PHILIP G,YLITALO CAROLINE M,BUCCELLATO GINA M,JONZA JAMES M,MERRILL WILLIAM WARD,DUNN DOUGLAS S,YUST DAVID T
申请号：
IN201647000973
公开号：
IN201647000973A
申请日:
2016.01.11
申请国别(地区):
IN
年份:
2016
代理人:
摘要：
Various embodiments of a respirator (10) that includes a harness (13 16) a mask body (12) and an exhalation valve (14) are disclosed. The exhalation valve (14) can include a valve seat (20) and a flexible flap (22) that is in engagement with the valve seat. The flexible flap can have one or more materials that can cause the flap to flash (26) when moving from a closed position to an open position or vice versa. The flashing valve can make it easier for a user to ascertain whether the valve is operating properly.
