Patent Number: 6,305,370

Title: Voice transmitter for a breathing protective mask

Abstract: The invention is directed to a voice transmitter for a breathing protective mask. The voice transmitter includes a membrane housing (2) and a clamping ring (3) which can be connected to the membrane housing (2). The voice transmitter also includes a voice membrane (4) between the membrane housing (2) and the clamping ring (3). The voice membrane (4) has an outer membrane portion (14) which is accommodated at a connecting location between the clamping ring (3) and the membrane housing (2). An inner portion (15) of the membrane (4) is tensioned over an annularly-shaped projection (8) located on the membrane housing (2). The pretensioning of the voice membrane is adjusted in a simple manner in that the clamping ring (3) has an annularly-shaped support surface 13 for the inner membrane portion (15) and that the connecting location is configured as a threaded connection (7, 10).

Inventors: Rosert; Michael (Lubeck, DE), Gdulla; Manfred (Lubeck, DE)

Assignee: Drager Sicherheitstechnik GmbH

International Classification: A62B 18/08 (20060101); A62B 18/00 (20060101); A62B 018/08 ()

Expiration Date: 10/23/2018