Method and rock drilling rig for hole drilling

Details Method and rock drilling rig for hole drilling Method and rock drilling rig for hole drilling

2006-10-06

2010-06-29

Gay, Jennifer H (Department: 3672)

Boring or penetrating the earth

Processes

Reexamination Certificate

active

07743851

ABSTRACT:
The invention relates to a method and a rock drilling rig for drilling a hole in a rock. In the method the hole is drilled with a so-called top-hammer rock drilling rig including a drill rod and a cone roller bit at the end of the drill rod. During drilling with the percussion device, stress pulses of low amplitude are produced at a high frequency of at least 200 Hz. In the rock drilling rig, the cone roller bit (3) at the end of the drill rod and the percussion device are configured to feed stress pulses of low amplitude, at the frequency of at least 200 Hz, via the drill rod and the cone roller bit to the rock.

REFERENCES:
patent: 2717763 (1955-09-01), Bodine
patent: 2743083 (1956-04-01), Zublin
patent: 3307641 (1967-03-01), Wiggins
patent: 3377902 (1968-04-01), Bodenseher
patent: 4256190 (1981-03-01), Bodine
patent: 5662180 (1997-09-01), Coffman et al.
patent: 7341116 (2008-03-01), Fincher et al.
patent: 2005/0178558 (2005-08-01), Kolle et al.

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