发明名称 HEARING PROTECTOR
摘要 A hearing protector has two closed muffs (2) which sealingly abut against the wearer's head, so that there is formed a closed space in each muff (2) and about the user's ear. A loudspeaker (4) is disposed interiorly in the muff and has a membrane (5) whose one side is turned to face towards the user's ear, and whose opposing side is turned to face towards a closed volume which is defined by the membrane and an enclosure. In order to improve the base reproduction in listening to music, the interior of the enclosure is, via at least one hole or one duct, in communication with the ambient surroundings outside the closed space of the muff (2). In one preferred embodiment, the enclosure comprises a capsule (7) which is integrated part of the loudspeaker (4).
申请公布号 EP2301257(A4) 申请公布日期 2013.12.04
申请号 EP20090746842 申请日期 2009.04.27
申请人 3M SVENSKA AKTIEBOLAG 发明人 SJOEMAN, HENRIK;HAEKANSSON, JOHAN
分类号 H04R1/10;A61F11/14;H04R5/033 主分类号 H04R1/10
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