| US 7,551,747 B2 | ||
| Perforated cap for a hearing aid | ||
| Timothy Cuongdung Huynh, San Jose, Calif. (US); Greg Anderson, Fremont, Calif. (US); Sunder Ram, San Jose, Calif. (US); Dean Johnson, Solana Beach, Calif. (US); Richard Gable, Sunnyvale, Calif. (US); Robert Schindler, San Francisco, Calif. (US); Pat Contioso, Sunnyvale, Calif. (US); Gregory Kushner, El Sobrante, Calif. (US); Richard Carl Urso, Redwood City, Calif. (US); and Adnan Shennib, Dublin, Calif. (US) | ||
| Assigned to InSound Medical, Inc., Newark, Calif. (US) | ||
| Filed on Feb. 14, 2005, as Appl. No. 11/58,097. | ||
| Claims priority of provisional application 60/544871, filed on Feb. 13, 2004. | ||
| Prior Publication US 2006/0215862 A1, Sep. 28, 2006 | ||
| Int. Cl. H04R 25/00 (2006.01) | ||
| U.S. Cl. 381—325 [381/324; 381/322; 381/328] | 35 Claims |
| 1. A protective cap assembly for improving a resistance of an extended wear hearing aid to condensation and contaminants,
the assembly comprising:
a cap configured to be mounted over at least a portion of the hearing aid, the cap including a plurality of perforations,
a placement and size of the perforations configured to provide sufficient aeration and drainage to reduce a relative humidity
of a cap interior when the hearing aid is positioned in an ear canal of a user, the perforations having 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.
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