| 摘要 |
<p>A breathing protective device comprising a filter house defining at least one wall between a first end and a second end, said wall having at least one opening, a filter in the filter house and a mouthpiece having an air canal with an opening arranged to be introduced into and held in the user's mouth whereby said filter house extends parallel to a line between the corners of the user's mouth, said air canal also being in communication with a first check valve for filtered air from said space within said filter house and a second check valve for exhalation air, wherein the filter is disposable, wherein that said filter house has a tubular elongated form, that said filter is curved in a plane that is perpendicular to the longitudinal direction of the filter house and that the filter house, containing the filter, is arranged to be disposable together with the filter.</p> |
