发明名称 High speed manual post puller
摘要 A hand operated post puller including a lever arm with multiple pivot points and a fulcrum mounted on a force dispersing foot. The cinch for the post is mounted on the end of the lever arm and consists of a pair of angulated links with a pair of separated bars mounted between them. The bars grip the post on either side and pressure from the lever arm tightens the cinch as the force pulls the post out of the ground.
申请公布号 US5464192(A) 申请公布日期 1995.11.07
申请号 US19940296459 申请日期 1994.08.26
申请人 BURNHAM, DALE A. 发明人 BURNHAM, DALE A.
分类号 E04H17/26;(IPC1-7):E21B19/00 主分类号 E04H17/26
代理机构 代理人
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