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.
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
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