发明名称 Pipe extractor apparatus and method of extracting pipe
摘要 The pipe extractor includes a main frame supported by wheels mounted on the main frame. The wheels are vertically movable, relative to the main frame, by a hydraulic cylinder. An extractor frame is pivotally attached to the main frame for pivotal movement about an extractor axis. A shank has an upper end attached to the extractor frame. A shoe with a pipe through passage is connected to a lower end of the shank. A self leveling linkage pivots the extractor frame about the extractor axis in response vertical movement of the wheels. A hitch beam is pivotally attached to the main frame. Pipe contacts the pipe through passage in the shoe and steers the main frame. A lister is mounted on the hitch beam. A ramp assembly and rear plow are pivotally connected to the shoe.
申请公布号 US7713001(B1) 申请公布日期 2010.05.11
申请号 US20080253913 申请日期 2008.10.17
申请人 HARLOW JOSEPH J;BAUMAN MICHAEL M 发明人 HARLOW JOSEPH J.;BAUMAN MICHAEL M.
分类号 E02F5/10 主分类号 E02F5/10
代理机构 代理人
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