Respiratory protection device

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United States of America Patent

PATENT NO 9901758
SERIAL NO

14380582

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Abstract

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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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Patent Owner(s)

Patent OwnerAddress
KOKEN LTD7 YONBAN-CHO CHIYODA-KU TOKYO 1028459

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Furuichi, Ryohei Tokyo, JP 1 24
Ishikawa, Yu Tokyo, JP 9 28

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