发明名称 Gutter guard ferrule
摘要 A ferrule for use in a rain gutter to surround a spike which connects the gutter to a supporting wall, with the gutter beneath an overhanging roof edge. The ferrule has a bore formed with internal longitudinal ribs angularly spaced from each other to define channels. The spike has corners which fit into the channels whereby the ferrule is held against rotation relative to the spike.
申请公布号 US5228247(A) 申请公布日期 1993.07.20
申请号 US19930007712 申请日期 1993.01.22
申请人 ALUMAX ALUMINUM CORP. 发明人 DRESSLER, ROBERT D.
分类号 E04D13/072 主分类号 E04D13/072
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