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DUAL NOISE ATTENUATION (DNA) HEADSET/EARMUFF
专利权人:
Joseph Berto
发明人:
Joseph Berto
申请号:
US15689127
公开号:
US20180140464A1
申请日:
2017.08.29
申请国别(地区):
US
年份:
2018
代理人:
摘要:
A dual attenuation ear (DNA) protecting headset/earmuff, having means for externally adjusting the location of an integral inner earplug into the ear canal of a wearer, useful in high noise environments. In a headgear such as an earmuff, there is typically no way to insert an additional attenuation device, such as an earplug, once the earmuff is placed on the ear. The apparatus includes a pair of toggle levers equipped with replaceable earplugs on the ends, which are integral to the headgear and accessible from outside of the earcup. Manual manipulation of the toggle selectively manipulates the end of the earplug into the wearer's ear, providing additional degrees of ambient sound attenuation. The earmuff device, with concurrent dual protection, can be placed or removed from the ear without requiring a two-step process of first inserting the earplug, and then covering it with the earcup or vise-versa.
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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