Respiratory protection device
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United States of America Patent
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Feb 27, 2018
Issued Date -
N/A
app pub date -
Feb 21, 2013
filing date -
Feb 23, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A respiratory protection device is provided that allows the wearers of a facepiece to smoothly have a conversation with each other. A respiratory protection device includes a facepiece. The protection device also includes a voice amplifier that includes a microphone and a speaker therein, a detection unit that directly or indirectly detects the inner pressure of the facepiece, a power source unit, and a control unit. The control unit controls so as to place the voice amplifier in an operational state or a non-operational state, based on a result of comparison of information from the detection unit with a determination reference in the control unit.
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