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Urządzenie do ochrony słuchu o małym tłumieniu dźwięków, z układem filtrującym
专利权人:
3M Innovative Properties Company
发明人:
DOTY, MARC L.
申请号:
PL08725260
公开号:
PL2112916T3
申请日:
2008.02.07
申请国别(地区):
PL
年份:
2013
代理人:
摘要:
A hearing protection device including a sound attenuating portion configured to be disposed within an ear canal of a user to obstruct a passage of sound, a channel formed through the sound attenuating portion configured to allow sound to pass through the sound attenuating portion when the portion is disposed within the ear canal, a tube disposed in the channel and configured to allow the sound in the channel to pass therethrough, and a filter disposed at one end of the tube and positioned at an interior of the sound attenuating portion, where the filter attenuates some of the sound passing through the tube.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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