Hearing aid filter apparatus

Details Hearing aid filter apparatus Hearing aid filter apparatus

1992-01-31

1993-11-16

Ng, Jin F.

Electrical audio signal processing systems and devices

Sound effects

Reverberators

381 68, 381 687, 2208, H04R 2500

Patent

active

052630900

ABSTRACT:
An apparatus to effect coverage of a hearing aid housing received within a cavity of the sock housing to effect filtration of various airborne contaminants. A modification of the invention includes hair filaments arranged and mounted to the sock structure to effect coverage of the sock member and its camouflage.

REFERENCES:
patent: 993620 (1911-05-01), Quinn
patent: 2325150 (1943-07-01), Sahlmann
patent: 2597508 (1952-05-01), Majewski
patent: 2615169 (1952-10-01), Maxant
patent: 2975244 (1961-03-01), Lehr
patent: 4702345 (1987-10-01), Janssen et al.
patent: 4918757 (1990-04-01), Janssen et al.

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