发明名称 Pipe pulling device
摘要 A pipe pulling device having a multiple section body portion with a substantially hollow interior, a cap engagable with a pulling device and having a threaded member extending into the body portion hollow interior, and a securing plug having a threaded conically shaped front portion suitable to cooperatively receive and secure the cap threaded member so that as the member continues to be threadably received, the plug front portion is urged into the body portion hollow interior and the body portion sections are separated and expanded to grippingly engage the pipe interior and enable the pipe to be pulled by the pulling device connected to the cap.
申请公布号 US5597192(A) 申请公布日期 1997.01.28
申请号 US19930171452 申请日期 1993.12.22
申请人 SMITH, DAVID J. 发明人 SMITH, DAVID J.
分类号 F16L55/18;(IPC1-7):B66C1/56 主分类号 F16L55/18
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