Electrical audio signal processing systems and devices – Hearing aids – electrical – Specified casing or housing
Reexamination Certificate
2005-02-14
2009-06-23
Kuntz, Curtis (Department: 2614)
Electrical audio signal processing systems and devices
Hearing aids, electrical
Specified casing or housing
C381S324000, C381S322000, C381S328000
Reexamination Certificate
active
07551747
ABSTRACT:
Embodiments of the invention provide a protective cap assembly for a CIC hearing aid. The assembly comprises a perforated cap configured to be mounted over the lateral end of the hearing aid to protect the hearing aid from contaminants. At a least a portion of the cap includes a protective coating and a plurality of perforations. The placement and size of the perforations can be configured to provide sufficient aeration and drainage to reduce a relative humidity of the cap interior when the hearing aid is positioned in the ear canal. The perforations also operate as sound conduction channels for conducting sound to the cap interior. The perforations have a minimum size wherein a single perforation provides sufficient acoustic transmittance to a hearing aid component such that a hearing aid performance parameter is not substantially adversely affected. They can also be configured to provide splash protection for the cap interior.
REFERENCES:
patent: 5105904 (1992-04-01), Olsen
patent: 5401920 (1995-03-01), Oliveira
patent: 7298857 (2007-11-01), Shennib et al.
patent: 7313245 (2007-12-01), Shennib
patent: 2007/0086611 (2007-04-01), Rafferty
Ballachanda, The Human Ear Canal, Singular Publishing, 1995, pp. 195.
Anderson Greg
Contioso Pat
Gable Richard
Huynh Timothy Cuongdung
Johnson Dean
InSound Medical, Inc.
Kuntz Curtis
Pritchard Jasmine
Townsend and Townsend / and Crew LLP
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