Boring or penetrating the earth – With means to feed drive
Reexamination Certificate
2011-03-15
2011-03-15
Wright, Giovanna C (Department: 3672)
Boring or penetrating the earth
With means to feed drive
C175S162000
Reexamination Certificate
active
07905300
ABSTRACT:
The invention relates to a drilling device and a related drilling method, in which provision is made for a mast, a drilling carriage that is guided along the mast in a displaceable manner and a drive unit for moving the drilling carriage on the mast. In accordance with the invention the drive unit has both a hydraulic cylinder drive and a rope winch drive. The drilling carriage can be coupled with the hydraulic cylinder drive and with the rope winch drive.
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Hackl Stefan
Rieder Otto
Bauer Maschinen GmbH
Bible Sonya
Jacobson & Holman PLLC
Wright Giovanna C
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