Gas mask with voice communication device

摘要

A face mask carries a voice communication device including a circular housing having voice transmitting openings and an annular seat which receives a flexible film diaphragm. The diaphragm is clamped to the seat by an inner circular member which has voice transmitting openings surrounding a socket for receiving a plug-in microphone. The housing receives an outer circular shield member which also has voice transmitting openings and defines a socket for receiving a plug on a microphone cord. Electrical conductor wires extend from the microphone socket through a passage around the diaphragm to the cord socket. A sealant material is injected into the passage and into an annular chamber which is defined between the housing and the inner microphone support member and receives a peripheral edge portion of the diaphragm.