发明授权
US06524031B2 Device and method for trenchless replacement of underground pipe 有权
无管道更换地下管道的装置及方法

Device and method for trenchless replacement of underground pipe
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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