发明名称 Flexible Chain Saw for Cutting Tree Limbs
摘要 A flexible tree cutting saw is operable from ground level for cutting limbs from a tree. The flexible saw includes a flexible cutting chain, about two to three feet in length, with a rope attached to either end and handles attached to the ends of the ropes. A telescoping device with a hook at its top end is used to place the saw over the tree limb with the flexible cutting chain on the tree limb, and the hook is designed to effectively grab the raised handle and lower it towards the user. The user grabs the handle and applies downward pressure and a back and forth motion to saw the limb. The flexible tree cutting saw use a jeweler's style chain with a plurality of substantially planar cutting segments, preferably made from stamped sheet steel, which are either linked together directly or linked together using oval chain links. The cutting segments have two cutting edges and preferably have teeth facing in one direction for a majority of the cutting span of the cutting chain. The planar cutting segments are mounted or linked in the chain so that the cutting edges of one segment are substantially perpendicular in orientation with respect to the cutting edges of the adjacent planar cutting segments, when the chain hangs naturally.
申请公布号 US2009172956(A1) 申请公布日期 2009.07.09
申请号 US20080970020 申请日期 2008.01.07
申请人 CHENG HOWARD S 发明人 CHENG HOWARD S.
分类号 B23D57/02;B26B9/02;B26B27/00 主分类号 B23D57/02
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