Disposable noise reducing hearing aid attachment

Details Disposable noise reducing hearing aid attachment Disposable noise reducing hearing aid attachment

1976-07-26

1978-02-14

Tomsky, Stephen J.

Acoustics

Diaphragm

Microphone type

179107R, 179180, 181166, G10K 1300, H04R 2500

Patent

active

040733661

ABSTRACT:
A disposable noise reducing hearing attachment provided for covering the sound inlet of a hearing aid to reduce the amplitude of random noises such as wind noises and to prevent dirt and moisture from entering the sound inlet. The attachment includes a flexible open cellular noise filter that is covered by a thin sheet of tightly woven material to form a wind and dust screen on the top surface of the noise filter. A stretchable bottom ring layer of nonporous sheet material is attached to the bottom surface of the noise filter in which the bottom ring layer has an aperture that is greater than the cross section of the sound inlet. The top wind screen layer and the bottom ring layer are secured to opposite sides of the noise filter layer by rings of adhesive that have diameters greater than the cross-sectional diameter of the sound inlet of the hearing aid so that adhesive does not interfere with the sound transmission through the attachment and into the hearing aid through the sound inlet.

REFERENCES:
patent: 1851208 (1932-03-01), Nicolson
patent: 3154171 (1964-10-01), Knutson et al.
patent: 3265153 (1966-08-01), Burroughs
patent: 3976848 (1976-08-01), Estes

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