发明名称 Post puller
摘要 A post puller apparatus that includes a single thickened plate having a hole therethrough configured to the cross sectional shape of a post that needs to be pulled up out of the ground. The plate assumes a tilted position on the post. A chain is attached to the upper end of the plate for connection with a hoisting apparatus. Operation of the hoisting apparatus causes the tilted plate to be clamped against the post for drawing the post out of the ground.
申请公布号 US5011117(A) 申请公布日期 1991.04.30
申请号 US19900509728 申请日期 1990.04.16
申请人 YOUNGBLOOD, DALE;HUTCHINS, HARRY L. 发明人 YOUNGBLOOD, DALE;HUTCHINS, HARRY L.
分类号 B66C1/62;E01F9/011;E04H17/26 主分类号 B66C1/62
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