| 发明名称 |
Trenchless pipe replacement of underground pipe |
| 摘要 |
The present invention comprises an improved cable puller assembly for use in the trenchless replacement of underground pipes including water, sewer and electrical conduits. The improved cable puller assembly utilizes a cylinder body comprising four double acting hydraulic cylinders set up in pairs of two, i.e. two forward cylinders and two aft cylinders. The cable pullers are configured to move inwardly and outwardly from the cylinder body and feature the ability to pull a cable through a pipe on both their inward and outward strokes. |
| 申请公布号 |
US8888071(B2) |
申请公布日期 |
2014.11.18 |
| 申请号 |
US201213405035 |
申请日期 |
2012.02.24 |
| 申请人 |
|
发明人 |
Sol Jonathan;Sol Roelof |
| 分类号 |
H02G1/08 |
主分类号 |
H02G1/08 |
| 代理机构 |
Cislo & Thomas, LLP |
代理人 |
Cislo & Thomas, LLP |
| 主权项 |
1. A cable pulling device for use with a cable and a mole in the trenchless replacement of underground pipe, comprising:
a cylinder body; the cylinder body containing a forward set of double-acting pistons and an aft set of double acting pistons; a forward puller attached to the forward set of double-acting pistons; an aft puller attached to the aft set of double acting pistons; and wherein the aft and forward pullers each contain a pair of cable engaging jaws. |
| 地址 |
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