William L. Grilliot,Mary I. Grilliot,Allen Fritts,Richard A. Bauer
申请号：
US12242262
公开号：
US08316850B2
申请日:
2008.09.30
申请国别(地区):
US
年份:
2012
代理人:
摘要：
A self-contained breathing apparatus or a respirator can be equipped with a sensor of ambient airborne conditions. A display unit can be carried by a face mask for the apparatus or respirator. Responsive to output signals from the sensor, the display unit can present an air quality indicator, or a breathability indicator to a user of the apparatus or respirator.
