Respirator module with speech transmission and exhalation valve

Details Respirator module with speech transmission and exhalation valve Respirator module with speech transmission and exhalation valve

2007-11-20

2007-11-20

Mitchell, Teena (Department: 3771)

Surgery

Respiratory method or device

Means for transmitting, or facilitating, voice communication...

C128S206170

Reexamination Certificate

active

10484342

ABSTRACT:
A respirator speech transmitter and exhalation valve module comprising a resilient exhalation valve having a low airflow resistance for exhalation but providing a secure seal against inadvertent inhalation through the exhalation valve module. An exhalation airflow channel is formed between a module body on the outside of the channel and a conical airflow guide and the exhalation valve on the inside of the channel. The exhalation airflow channel is in the form of an amplification horn. The airflow channel produces a smooth airflow for unrestricted exhalation and high intelligibility of a user's speech. The module includes a drinking conduit for selectively fluidly connecting a mouthpiece in the respirator to a beverage container and further includes an electrical communication block with internal and external fittings for connecting a microphone in the mask to a radio or amplifier carried by the mask user.

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