1979-09-11
1981-09-22
Robinson, Thomas A.
179107H, H04R 2500
Patent
active
042912032
ABSTRACT:
A hearing aid device including a microphone that is located in the auditory canal of the user's ear and that is retained in position therein by insertion into a molded ear plug that is received in the auditory canal, the microphone being completely embedded in the ear plug so that only a sound inlet portion thereof projects outwardly therefrom. With the microphone located in the auditory canal the concha portion of the user's ear functions in the usual manner as a sound collector for the microphone. A sound tube also extends through the ear plug for communication with the auditory canal of the user's ear and further communicates with a transducer that electronically translates the sound into electrical impulses that are amplified and retranslated into amplified sound for transmission through the sound tube, the interior of the sound tube being free and unobstructed to provide for fidelity of sound as transferred through the sound tube to the auditory canal.
REFERENCES:
patent: 3098127 (1963-07-01), Huth
patent: 3676611 (1972-07-01), Stephens
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