发明名称 Portable tools for removing snow from pitched roofs
摘要 A portable tool suitable for removing snow accumulations from pitched roofs while standing on the ground. The tool is provided with an elongate handle for propelling a U-shaped body member upwardly across the roof while forming a U-shaped channel in the snow, and a pivotal blade movable into a plane generally perpendicular to the roof upon movement of the tool downwardly toward the roof edge for plowing the snow in the previously formed U-shaped channel off the roof.
申请公布号 US4249767(A) 申请公布日期 1981.02.10
申请号 US19790069877 申请日期 1979.08.27
申请人 ANDREASEN, NORMAN H 发明人 ANDREASEN, NORMAN H
分类号 E04D13/10;(IPC1-7):E01H5/02;A47L13/02 主分类号 E04D13/10
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