发明名称 |
Attenuating foam insert and method for manufacture |
摘要 |
A shaped acoustic foam insert for use in improving the performance of circumaural hearing protectors is described. A foam block having a cross-section and shape is adapted to occupy the entire interior volume of an earcup of a circumaural hearing protector. The insert has no folds or open acoustic cavities. The surface of the insert that faces the ear of the user of the circumaural hearing protector comprises a curvilinear groove. The groove has no sharp angles and accommodates the average human pinna. A system and method of manufacturing the attenuating foam insert are provided.
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申请公布号 |
US2005126845(A1) |
申请公布日期 |
2005.06.16 |
申请号 |
US20040009744 |
申请日期 |
2004.12.10 |
申请人 |
VAUDREY MICHAEL A.;DU YU;SAUNDERS WILLIAM R. |
发明人 |
VAUDREY MICHAEL A.;DU YU;SAUNDERS WILLIAM R. |
分类号 |
H04R1/10;H04R25/00;(IPC1-7):H04R25/00 |
主分类号 |
H04R1/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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