发明授权
- 专利标题: Device and method for trenchless replacement of underground pipe
- 专利标题(中): 无管道更换地下管道的装置及方法
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申请号: US09939084申请日: 2001-08-24
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公开(公告)号: US06524031B2公开(公告)日: 2003-02-25
- 发明人: Robert Ward Carter , Robert Williams Carter
- 申请人: Robert Ward Carter , Robert Williams Carter
- 主分类号: E02F510
- IPC分类号: E02F510
摘要:
A trenchless pipe replacement device including a pipe parting mole, a length of cable that is engagable to the mole, a cable pulling device and a cable pulling device engagement device that provides a mounting structure for the cable pulling device. The cable pulling device includes a reciprocating cable engagement mechanism that grips the cable on a pulling stroke and holds the cable on a recovery stroke. The cable pulling device engagement device generally includes a reaction plate and a structure for removably engaging the cable pulling device therewithin. A cable pulling frame may be used to facilitate the removal of the cable from a relatively small hole that is created at the pulling end of the pipe.
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