Securing and tensioning device for a towing cable connected to a percussion boring machine
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United States of America Patent
Stats
-
Jul 1, 1997
Grant Date -
N/A
app pub date -
Jul 28, 1995
filing date -
Jul 30, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A securing and tensioning device for a towing cable that is secured to a percussion boring machine and connects a pipe that is to be pulled in to the boring machine, comprising a thrust member bearing on the free end of the pipe that is to be pulled in, a clamping unit that is adjacent to the thrust member and clamps when a force acts on the towing cable in the direction of the pipe that is to be pulled in, and a tensioning unit arranged coaxially with the clamping unit that clamps when a force acts in the direction of the pipe that is to be pulled in and is movable in the direction opposite to that of the pipe that is to be pulled in.
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