Electrical audio signal processing systems and devices – Hearing aids – electrical – Specified casing or housing
Patent
1997-10-31
1999-10-19
Kuntz, Curtis A.
Electrical audio signal processing systems and devices
Hearing aids, electrical
Specified casing or housing
381328, 381324, H04R 2500
Patent
active
059701579
ABSTRACT:
An ear wax barrier for an in-the-ear or in-the-canal type hearing aid device positioned at least in part between a receiver output port and a shell acoustic output port includes a substantially cylindrical housing having a barbed portion for press-fitting the barrier into position. The barrier may include a screen and/or a plurality of undulations, such as a thread internal thereto for providing wax accumulation sites to retard the migration of wax into the hearing aid. The barrier is more easily inserted than removed.
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A Drawing and a Data Sheet for a Beltone OPTIMA Hearing Aid with a Removable Threaded Wax Guard on sale in the United States before Jan. 27, 1994.
Barnie Rexford N.
Beltone Electronics Corporation
Kuntz Curtis A.
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