发明名称 Stake puller for concrete form stakes
摘要 A stake puller for concrete form stakes both wooden and metal is structured to use the form top as a levering platform. A U-shaped levering head is affixed with angled form grippers at both ends of the opend U. The closed end of the U has a levering arm attached and a pliable protective cover fits over the handle. A sectional scissor structure with each section axially pinned together and having a small control handle centrally fitted is suspended in the U-shaped levering head by a hinge and hanger plate. The two lower sectional leg bars have the tip ends angled outward to form stake gripper toes as a means for grabbing onto and pulling a stake. A depth control blockage is affixed to the underside of the grippers to prevent stake bite-through.
申请公布号 US4671493(A) 申请公布日期 1987.06.09
申请号 US19860832380 申请日期 1986.02.24
申请人 RAVENCROFT, GARY N. 发明人 RAVENCROFT, GARY N.
分类号 B25B27/02;E04G19/00;(IPC1-7):B66F3/00 主分类号 B25B27/02
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