发明名称 Weatherproof sound attenuating device
摘要 A sound attenuating device including a sound insulating structure and a windband. The sound insulating structure is constructed and arranged to receive vented air from an exhaust vent. The windband is affixed to the sound insulating structure and is constructed and arranged to prevent water from entering the sound insulating structure. The windband also provides a structure for attenuating sound.
申请公布号 US6457550(B1) 申请公布日期 2002.10.01
申请号 US20010800186 申请日期 2001.03.06
申请人 TWIN CITY FAN COMPANIES, LTD. 发明人 BARRY CHARLES L.;LECLERC DAVID P.;TANG THANH K.;SMITH JAMES L.
分类号 F24F7/02;F24F13/24;(IPC1-7):E04F17/04 主分类号 F24F7/02
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