Hearing protector against loud noises

Details Hearing protector against loud noises Hearing protector against loud noises

1997-12-18

1999-08-10

Dang, Khanh

Acoustics

Anatomic or prosthetic relation

Ear and mouth

A61B 702

Patent

active

059362081

ABSTRACT:
The invention relates to a hearing protector for attenuating, selectively or not, noises that can have an intensity of up to 190 dB, designed to be inserted in sealing fashion into the auditory canal. The hearing protector includes a flexible cylindrical body that has a ferrule at each end. At least one of the two ferrules has a channel that runs from one end of the ferrule to the center of the cylindrical body and contains an acoustic filter. When the two ferrules each contain an acoustic filter, the filters may or may not be identical.

REFERENCES:
patent: 4587965 (1986-05-01), De Boer et al.
patent: 4852683 (1989-08-01), Killion
patent: 5113967 (1992-05-01), Killion et al.

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