Draeger breathing apparatus

Draeger breathing apparatus

[′drāg·ər ′brēth·iŋ ‚ap·ə‚rad·əs]
(mining engineering)
A long-service, self-contained oxygen-breathing apparatus with the oxygen feed governed by the lungs; allows the user to do hard work for up to 5 hours and normal work for 7 hours, and can sustain a resting individual for 18 hours.
References in periodicals archive ?
The use of Draeger breathing apparatus quickly spread to other emergency services fields.