发明名称 Freeze-resistant downspout system
摘要 A freeze-resistant downspout system includes a metal downspout having an interior portion within a building and a contiguous exterior portion outside the building. The exterior portion is shielded from the weather by a thermally insulated shroud so that heat conducted along the downspout from within the building is sufficient to keep the exterior portion from freezing.
申请公布号 US5584147(A) 申请公布日期 1996.12.17
申请号 US19950540072 申请日期 1995.10.06
申请人 BUTLER MANUFACTURING CO., INC. 发明人 AGEE, RALPH;JACKSON, MICHAEL E.
分类号 E04D13/064;E04D13/08;E04D13/10;(IPC1-7):E04D13/064 主分类号 E04D13/064
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