Boring or penetrating the earth – Processes – Boring with specific fluid
Reexamination Certificate
2006-09-26
2006-09-26
Neuder, William (Department: 3672)
Boring or penetrating the earth
Processes
Boring with specific fluid
C175S205000
Reexamination Certificate
active
07111695
ABSTRACT:
The invention relates to a method for horizontal ground drilling, in particular for rock drilling, by means of a ground drilling apparatus which can be driven forward in rotation and percussively, the apparatus having compressed air and drilling medium applied to it alternately or simultaneously, and the compressed air and the drilling medium being supplied via one channel.
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Cook Alex McFarron Manzo Cummings & Mehler, Ltd.
Neuder William
Tracto-Technik GmbH
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