Boring or penetrating the earth – With above-ground guide for relatively advancing tool
Reexamination Certificate
2006-02-28
2010-10-19
Bagnell, David J (Department: 3676)
Boring or penetrating the earth
With above-ground guide for relatively advancing tool
C173S184000
Reexamination Certificate
active
07814994
ABSTRACT:
Drill rod support (10) comprising means capable of moving two opposing drill rod support halves (20), each half (20) comprising a surface (21) for direct contact with the drill string (30), and the half being provided with a recess (23) capable of forming a drill string opening (22) with an opposing drill rod support half (20), the recess (23) being generally V-shaped, for enabling guiding of drill strings (30) of different shape and dimension. The invention is characterized in that the drill rod support halves (20) are movable to and from each other, for enabling contact with the drill string (30). The invention also relates to a drill rod support half (20) for use in such drill rod support.
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Atlas Copco Rock Drills AB
Bagnell David J
Michener Blake
Stone Mark P.
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