发明名称 INTERNAL PIPE PULLING DEVICE
摘要 A pulling device (10) for use with a pipe having an inside wall. The device includes a center slide (12). The device further includes at least one gripper plate (50, 52) that is adapted to cooperatively engage the center slide (12) to cause the gripper plate (50, 52) to expand outwardly with respect to the center slide (12). The gripper plate (50, 52) includes a plurality of rings (74, 76) for engaging the inside wall of the pipe. The device further includes a pulling eye (92) attached to the center slide (12) to which a swivel or a cable can be attached to pull the device (10).
申请公布号 WO9945308(A1) 申请公布日期 1999.09.10
申请号 WO1999US02862 申请日期 1999.02.10
申请人 AEROQUIP CORPORATION 发明人 LAVENDER, CECIL, LEE
分类号 B66C1/56;F16L1/00;F16L55/18;F16L55/26;(IPC1-7):F16L55/165 主分类号 B66C1/56
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