Hearing protection earplug

Details Hearing protection earplug Hearing protection earplug

2007-09-04

2007-09-04

Sherry, Michael (Department: 2836)

Acoustics

Anatomic or prosthetic relation

Ear and mouth

C181S129000, C181S136000, CD24S106000, CD24S174000

Reexamination Certificate

active

11448677

ABSTRACT:
In a hearing protection earplug for insertion into the ear canal ear composed of a soft material, especially a foam material, having a cavity that is open toward the outside, it is provided, with a view to achieving additionally increased wearing comfort accompanied with easy handling during insertion into and removal from the ear, that the cavity, as seen in the cross-section, has an approximately cross-shaped configuration.

REFERENCES:
patent: D307325 (1990-04-01), Gardner, Jr.
patent: 5044463 (1991-09-01), Carr
patent: D371193 (1996-06-01), Myers et al.
patent: D405173 (1999-02-01), Falco
patent: D419676 (2000-01-01), Garcia
patent: D481118 (2003-10-01), Doty et al.
patent: 6981504 (2006-01-01), Jenkins, Jr.
patent: D524937 (2006-07-01), Doty et al.
patent: 30 41 264 (1981-05-01), None
patent: WO 02/43633 (2002-06-01), None
patent: WO 2005/023147 (2005-03-01), None

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