Breathing mask
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United States of America Patent
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Issued Date -
Nov 27, 2014
app pub date -
Mar 27, 2014
filing date -
May 22, 2013
priority date (Note) -
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Abstract
The invention relates to a breathing mask, in particular for human beings, comprising a flexible mask body designed to fit over a mouth and nose on a user's face, at least one sealing lip for a gas-proof fit on the user's face, comprising at least one inhalation valve penetrating the mask body, a filter material assigned to the inhalation valve and an exhalation valve penetrating the mask body. It is intended that a manually actuable test valve is arranged downstream of the exhalation valve and designed to provide a gas passage from the exhalation valve to the surroundings in its normal state and to close said passage in its actuated state.
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