Microphone coupler for hearing aid having inverted conical end c

Details Microphone coupler for hearing aid having inverted conical end c Microphone coupler for hearing aid having inverted conical end c

1975-02-18

1976-09-07

Olms, Douglas W.

179107E, 179 1C, H04R 2900

Patent

active

039795675

ABSTRACT:
A microphone coupler or artificial ear for coupling a microphone and a hearing aid to test the operational characteristics of a hearing aid includes a cavity having a predetermined volume, an opening extending from one end of the coupler to the cavity and is in communication therewith for receiving microphone means therein. The other end of the coupler has an inverted conical configuration in in which an ear mold of a hearing aid is to be disposed, and a hole extends between the inverted conical end and the artificial ear cavity. A non-hardening moldable material is positioned within the inverted conical end around the ear mold which mechanically holds the ear mold in position and provides acoustical sealing during testing of the hearing aid.

REFERENCES:
patent: 2558550 (1951-06-01), Fiske
patent: 3619507 (1971-11-01), Metz
patent: 3692959 (1972-09-01), Lamp
patent: 3719783 (1973-03-01), Kennedy
patent: 3725584 (1973-04-01), Kilmer et al.

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