发明名称 |
Hearing protective device with moisture resistant earmuff sound absorbers |
摘要 |
<p>An earmuff hearing protective device whose earmuffs each include a generally cup-shaped, substantially rigid shell having a head-facing rim; a head-engaging, ear-encircling cushion affixed to the rim; and a sound absorber inside the shell. The sound absorber has a moisture-resistant integral skin substantially surrounding an open cell foam interior having lower density and greater porosity than that of the skin. The skin helps discourage moisture pickup and microbial growth.</p> |
申请公布号 |
AU2011227572(B2) |
申请公布日期 |
2014.04.10 |
申请号 |
AU20110227572 |
申请日期 |
2011.03.11 |
申请人 |
3M INNOVATIVE PROPERTIES COMPANY |
发明人 |
FERNANDES, RAFAEL P.;RIBEIRO, ELEM CRISTINA CARLOS;MAZZA, RODRIGO H.;DE GOUVEA, EMILIO C. P. |
分类号 |
A61F11/14;A42B3/16 |
主分类号 |
A61F11/14 |
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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