发明名称 Tree push
摘要 In combination with a bumper jack an apparatus for pushing a tree over when the tree is being cut down is provided so that when a base connected to the bumper jack is placed on a ground surface the apparatus is tipped at an angle between the ground surface and the tree a jack handle will operate a jack mechanism to rise along a jack post causing a support member to push a shaft through an aperture in a guide member until points on a tip member will contact the tree, pushing the tree over when the tree is being cut down.
申请公布号 US4564173(A) 申请公布日期 1986.01.14
申请号 US19840591195 申请日期 1984.03.19
申请人 ATHERTON, PETER W.;SPECTOR, GEORGE 发明人 ATHERTON, PETER W.;SPECTOR, GEORGE
分类号 B66F1/06;(IPC1-7):B66F3/24 主分类号 B66F1/06
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