High sound attenuating hearing protection device

Details High sound attenuating hearing protection device High sound attenuating hearing protection device

2004-06-11

2008-12-16

Sherry, Michale J (Department: 2836)

Acoustics

Anatomic or prosthetic relation

Ear and mouth

C181S129000, C181S130000, C181S136000, CD24S106000, CD24S173000, CD24S174000

Reexamination Certificate

active

07464786

ABSTRACT:
A hearing protection device insertable into an ear canal is provided, the device generally including a stem portion, a sound attenuating portion affixed to and extending at least partially over the stem portion, and a volume of space disposed between and delimited by the sound attenuating portion and the stem portion, where at least a part of the sound attenuating portion is collapsible into the volume of space during insertion of the hearing protection device into the ear canal.

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Patent Cooperation Treaty; International Search Report; PCT/US2005/020858; Jun. 13, 2005.

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