Hearing aid with cerumen trapping gap

Details Hearing aid with cerumen trapping gap Hearing aid with cerumen trapping gap

1985-12-11

1989-11-07

Ng, Jin F.

Electrical audio signal processing systems and devices

Sound effects

Reverberators

381 69, H04R 2500, H04R 2502

Patent

active

048797502

ABSTRACT:
A hearing aid has a sound-conducting tube, the distal end of which extends into the auditory meatus. The tube is mounted to an earpiece which closes off the ear canal. A protrusion surrounds the distal end and extends from the earpiece. A cap is detachably secured to the protrusion and is perforated to permit sound to travel into the ear, and the cap and the earpiece form a cerumen-trapping gap. The earpiece of the hearing aid has a substantially flat end plate adjacent the protrusion and the end plate bears a groove which surrounds the protrusion.

REFERENCES:
patent: 3068954 (1962-12-01), Strzalkowski
patent: 3170046 (1965-02-01), Leale
patent: 3374318 (1968-03-01), Martin
patent: 3408461 (1968-10-01), Langford
patent: 3852540 (1974-12-01), Diethelm
patent: 4447677 (1984-05-01), Miyahra et al.

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