Baffled earplug

Surgery – Body protecting or restraining devices for patients or infants – Head or face protector

Reexamination Certificate

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Details

C128S865000, C128S867000

Reexamination Certificate

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11367684

ABSTRACT:
An earplug (10) with a body front portion (22) for insertion into a person's ear canal, has a pocket (30) to increase comfort and is constructed to enhance noise attenuation. The pocket, which allows easier compression of the body front portion for increased comfort, has a plurality of baffles (50) that attenuate sound better than a pocket without baffles. The pocket with baffles is formed by a core pin (80) that lies in an injection mold (82) and that forms the pocket, the core pin having a plurality of slots (81) that form the baffles. The pocket includes a rear portion (36) that forms a wide passage, and the earplug includes a blocker portion (90) that partially or completely closes off the rear pocket passage.

REFERENCES:
patent: 4060080 (1977-11-01), Akiyama
patent: 4384575 (1983-05-01), Asker
patent: 4434794 (1984-03-01), Leight
patent: 5957136 (1999-09-01), Magidson et al.
patent: 6761173 (2004-07-01), Kuno et al.

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