发明名称 |
HEARING PROTECTIVE DEVICE WITH MOISTURE RESISTANT EARMUFF SOUND ABSORBERS |
摘要 |
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.
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申请公布号 |
US2011225705(A1) |
申请公布日期 |
2011.09.22 |
申请号 |
US20100724535 |
申请日期 |
2010.03.16 |
申请人 |
3M INNOVATIVE PROPERTIES COMPANY |
发明人 |
FERNANDES RAFAEL P.;RIBEIRO ELEM CRISTINA CARLOS;MAZZA RODRIGO H.;DE GOUVEA EMILIO CARLOS P. |
分类号 |
A42B1/06;A61F11/00;B23P17/04 |
主分类号 |
A42B1/06 |
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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