Acoustics – Anatomic or prosthetic relation – Ear and mouth
Patent
1981-12-21
1984-05-29
Rubinson, G. Z.
Acoustics
Anatomic or prosthetic relation
Ear and mouth
179107H, 181 22, G02C 1106
Patent
active
044517092
ABSTRACT:
An eyeglass hearing aid including a channel having a serpentine shape for providing a compact acoustical path for extending the path of sound transmission. A sweat guard is positioned around a volume control aperture formed on the upper surface of the eyeglass aid. Alignment structure serves to fix a curved printed circuit board in position relative to the flat lower surface of the paddle portion of the eyeglass aid. These particular structures are incorporated in an eyeglass hearing aid in order to utilize a printed circuit board of a behind-the-ear hearing aid and to provide the same frequency response as a behind-the-ear aid.
REFERENCES:
patent: 3193048 (1965-06-01), Kohler
patent: 3665121 (1972-05-01), Weiss
"The New, Flexible Answer . . . ," Advertisement, Hearing Instruments, Dec. 1980.
Beltone Electronics Corporation
Rubinson G. Z.
Schroeder L. C.
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