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.
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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 |
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代理人 |
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主权项 |
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地址 |
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