MARTIN, PHILIP G.,YLITALO, CAROLINE M.,BUCCELLATO, GINA M.,JONZA, JAMES M.,MERRILL, WILLIAM WARD,DUNN, DOUGLAS S.,YUST, DAVID T.
申请号：
CA2917504
公开号：
CA2917504A1
申请日:
2014.07.15
申请国别(地区):
CA
年份:
2015
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.
