Desmon T. Curran,John A. Duff,Benjamin H. Cooper,Jason A. Graves,Reyad A. Abdulqader
申请号：
US15740134
公开号：
US20180185677A1
申请日:
2016.06.28
申请国别(地区):
US
年份:
2018
代理人:
摘要：
An exhaust apparatus for connection to a personal protection respiratory device that defines a filtered air volume adjacent to the face of a wearer and comprises at least one exhalation, the apparatus comprising a blower in fluid connection with the at least one exhalation valve, the blower being responsive to the wearers respiratory cycle to draw a substantial portion of the wearers exhaled breath through the at least one exhalation valve wherein, in response to the wearers respiratory cycle, the blower operates throughout the wearers exhale breath, or a substantial period thereof, and does not operate throughout the wearers inhale breath, or a substantial period thereof.
