| 摘要 |
<p>The invention relates to a breathing mask (1), in particular for human beings, comprising a flexible mask body (2) designed to fit over a mouth and nose on a user's face, at least one sealing lip (3) for a gas-proof fit on the user's face, comprising at least one inhalation valve (6) penetrating the mask body (2), a filter material assigned to the inhalation valve (6) and an exhalation valve (9) penetrating the mask body (2). It is intended that a manually actuable test valve (11) is arranged downstream of the exhalation valve (9) and designed to provide a gas passage from the exhalation valve (9) to the surroundings in its normal state and to close said passage in its actuated state.</p> |
