Hearing protectors

Details Hearing protectors Hearing protectors

1984-03-20

1986-02-25

Hix, L. T.

Acoustics

Anatomic or prosthetic relation

Ear and mouth

179156R, 179182R, 2209, H04R 2500

Patent

active

045723230

ABSTRACT:
A hearing protecting device comprises a shell defining a hollow enclosure, which may be provided with sound absorbing material, with an open mouth, which is, in use, placed over the ear. A resiliently deformable seal of sound absorbing material is provided along the periphery of the open mouth to seal against the shell and the wearer, and is releasably retained in place by releasable retaining means which cooperate with an inner portion of the sealing means and with an inner edge portion of the mouth of the enclosure. The retaining means may comprise an annular member made integral with the sealing means and which extends round the inner edge of the mouth to overlie and engage an inner surface of the shell, or a member separate from the sealing means which retains an inner portion of the sealing means relative to the inner edge of the mouth of the shell.

REFERENCES:
patent: 3051961 (1962-09-01), Clark
patent: 3908200 (1975-09-01), Lundin
patent: 4057856 (1977-11-01), Aho

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