Method and device for boring holes in soil or rock

Details Method and device for boring holes in soil or rock Method and device for boring holes in soil or rock

2007-03-27

2007-03-27

Dang, Hoang (Department: 3672)

Boring or penetrating the earth

Processes

C175S171000, C175S320000

Reexamination Certificate

active

11395291

ABSTRACT:
In a method and device for boring or drilling, in particular percussion drilling or rotary percussion drilling, holes in soil or rock, wherein a borehole is formed by a percussive and/or rotary movement carried out by a drill bit (2) mounted on a drill rod assembly (3) and a jacket tube (6) coupled with the drill bit (2) is introduced into the borehole, it is provided that the jacket tube (6) is received in a socket (5) provided on the end facing away from the drill bit working surface, of an envelope tube (4) coupled with the drill bit (2), and that the jacket tube (6) is subjected to a percussive and/or compressive stress on its end facing away from the drill bit, whereby directionally precise boring or drilling is rendered feasible.

REFERENCES:
patent: 1079836 (1913-11-01), Canfield
patent: 3174563 (1965-03-01), Edblom et al.
patent: 4387775 (1983-06-01), Adolfsson et al.
patent: 5472057 (1995-12-01), Winfree
patent: 5845722 (1998-12-01), Makohl et al.
patent: 6106200 (2000-08-01), Mocivnik et al.
patent: 2004/0104050 (2004-06-01), Jrvel et al.
patent: 0358786 (1990-03-01), None

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