US 7,499,561 B2
Hearing aid with cerumen protection
Thomas Hanses, Feldkirchen-Westerham (Germany); and Torsten Niederdränk, Erlangen (Germany)
Assigned to Siemens Audiologische Technik GmbH, Erlangen (Germany)
Filed on May 10, 2005, as Appl. No. 11/126,094.
Claims priority of application No. 10 2004 023 306 (DE), filed on May 11, 2004.
Prior Publication US 2005/0271229 A1, Dec. 08, 2005
Int. Cl. H04R 25/00 (2006.01); H04R 25/02 (2006.01)
U.S. Cl. 381—325  [381/324; 381/328; 181/130] 10 Claims
OG exemplary drawing
 
1. A hearing aid, comprising:
a housing for accommodating the hearing aid and having an opening;
a cone arranged within the opening via supports, the cone having a tip on a narrowmost end pointing into an interior of the bearing aid housing;
a converter having a cylindrical portion positioned within the opening of the housing; and
an attenuation ring positioned between an interior wall of the housing and the cylindrical portion of the converter effective to fix the converter within the opening in an attenuating manner;
wherein the cone is disposed within an interior portion of the attenuation ring;
wherein the cone further comprises a tapering cross-section that continuously reduces in diameter from a front end of the cone to a rear end of the cone and from a front end of the opening to the converter: and
wherein the attenuation ring further comprises an opening angle that reduces in inner diameter from a front end of the attenuation ring, the front end of the attenuation ring facing the opening.