发明名称 Hearing protection device
摘要 An earpiece for a hearing protection device comprising an earbud (301), which is arranged such that it may be inserted into the ear canal of a user to block the ear canal of the user, wherein an acoustic pathway (303) is provided, which extends through the earpiece, and wherein an acoustic resistor (304) is provided that blocks the acoustic pathway, which acoustic resistor comprises an air permeable material.
申请公布号 GB201314808(D0) 申请公布日期 2013.10.02
申请号 GB20130014808 申请日期 2013.08.19
申请人 RACAL ACOUSTICS LIMITED 发明人
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