Boring or penetrating the earth – Processes – Boring horizontal bores
Reexamination Certificate
2002-07-11
2008-01-08
Thompson, Kenneth (Department: 3672)
Boring or penetrating the earth
Processes
Boring horizontal bores
C175S122000, C175S162000
Reexamination Certificate
active
07316280
ABSTRACT:
In a method for producing and widening ground bores or for the destructive replacement of buried lines with the aid of a tool arranged at the end of a rod driven by a boring device, the rod is built up from individual sections which are to be connected to one another in a machine excavation (staring excavation). In order to allow the use even of rod sections whose length is equal or almost equal to the diameter of the machine excavation, the boring device, prior to the introduction of a new rod section, is displaced, for example inclined, in such a manner that the rod section can be slid into the boring device, for example from outside the excavation, without interference from the rear end, projecting into the machine excavation, of a rod section which has already been introduced into the ground. As soon as the rod section has been slid in, the boring device together with the rod section is moved into a position in which it is aligned with the boring direction or the rod part which is already in the ground.
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Cook Alex McFarron Manzo Cummings & Mehler, Ltd.
Thompson Kenneth
Tracto-Technik GmbH
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