发明名称 |
Pulling attachment for plastic pipe and slip lining head |
摘要 |
The present invention is directed to an attachment for a plastic pipe, usually polyethylene pipe, to a head for pulling the pipe into a sewer or other utility line. The present invention is also directed to a slip lining head. More specifically, the present invention is directed to a slip lining head which includes the unique attachment for a plastic pipe used in the repair/replacement of sewer and other utility lines.
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申请公布号 |
US5642912(A) |
申请公布日期 |
1997.07.01 |
申请号 |
US19940327556 |
申请日期 |
1994.10.24 |
申请人 |
TTI TRENCHLESS TECHNOLOGIES, INC. |
发明人 |
PARISH, II, ROBERT O. |
分类号 |
B66C1/56;E21B31/20;(IPC1-7):E21B31/12;B66C1/10 |
主分类号 |
B66C1/56 |
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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