发明名称 Arborist limb lowering device and method
摘要 An apparatus for the controlled lowering to the ground of a cut portion of a tree includes a rope and an anchor having an arrangement of guiding protuberances., each guiding protuberance including a bearing surface frictionally engaging and redirecting the rope without the rope fully encompassing any portion of the anchor including any of the guiding protuberances. Three guiding protuberances define a triangular arrangement. Of the three, a first guiding protuberance is disposed in proximity to an intermediate guiding protuberance defining a segment of a rope path therebetween, and a second guiding protuberance is disposed in proximity tot he intermediate guiding protuberance defining another segment of the rope path therebetween without the segments crossing. A mounting member is attachable to the tree and a guiding member is pivotally connected to the mounting member along a pivot axis and includes an arrangement of guiding protuberances generally extending to each side thereof.
申请公布号 US2004178397(A1) 申请公布日期 2004.09.16
申请号 US20040492042 申请日期 2004.04.06
申请人 HALAS D. CARL 发明人 HALAS D. CARL
分类号 A01G23/099;A62B1/06;B66D1/60;B66D3/04;(IPC1-7):B65H59/14 主分类号 A01G23/099
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