Dräger Safety Ag&co. Kgaa

Other

Manfred Gdulla

Siegbert Tolk

Michael Rosert

Olaf Balke

Thomas Grassl

Dirk Feil

Rüdiger Müller

Rüdiger Weich

A breathing mask shall has an inspiration valve () that can be replaced in a simple manner. The breathing valve () is designed for this purpose as a modular assembly unit that can be inserted into the breathing gas channel () from the outer side () of the mask.

Breathing mask

The connection of a breathing mask to a safety helmet provides increased wearing comfort. A fastening mount () with circular arc-shaped inner contour () is provided, and the bracket for the breathing mask has a projection corresponding thereto. The projection is in contact with the inner contour () of the fastening mount (), so that the bracket is displaceable in relation to the fastening mount () in a rotatingly movable manner.

Safety helmet with a breathing mask

A gas mask for normal pressure operation and overpressure operation allows changeover of the expiration valve () from normal pressure operation to overpressure operation is made possible in a simple manner. The pretension of the valve spring () of the expiration valve () is adjusted by an angle lever () pivotable about an axis of rotation ().

Gas mask for normal pressure operation and overpressure operation

The invention is directed to a voice transmitter for a breathing protective mask. The voice transmitter includes a membrane housing (,) and a clamping ring (,) which can be connected to the membrane housing (,). The voice transmitter also includes a voice membrane (,) between the membrane housing (,) and the clamping ring (,). The voice membrane (,) has an outer membrane portion (,) which is accommodated at a connecting location between the clamping ring (,) and the membrane housing (,). An inner portion (,) of the membrane (,) is tensioned over an annularly-shaped projection (,) located on the membrane housing (,). The pretensioning of the voice membrane is adjusted in a simple manner in that the clamping ring (,) has an annularly-shaped support surface,for the inner membrane portion (,) and that the connecting location is configured as a threaded connection (,).

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Lübeck, Germany

Manfred Gdulla