Acoustic ear mold for hearing aid

Details Acoustic ear mold for hearing aid Acoustic ear mold for hearing aid

1975-08-01

1977-03-08

Tomsky, Stephen J.

Acoustics

Anatomic or prosthetic relation

Ear and mouth

181130, A61B 702

Patent

active

040108201

ABSTRACT:
This disclosure describes an acoustic ear mold insertable into the ear of an individual with impaired hearing and used in conjunction with a hearing aid. Inserted into the molded portion of the ear mold is a central thin-walled metal tube surrounded by a larger thin-walled metal tube, with annular end plates defining a closed resonance chamber. There is an opening through the wall of the central tube forming a path between the space inside the central tube and the annular chamber. Sound energy from the hearing aid is conducted to the ear mold through the central tube where it is reinforced by resonance in the annular chamber before passing on to the ear of the user.

REFERENCES:
patent: 3602330 (1971-08-01), Johnson
patent: 3688863 (1972-09-01), Johnson

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