Steerable boring machine

Details Steerable boring machine Steerable boring machine

1997-05-21

1999-07-20

Will, Thomas B.

Boring or penetrating the earth

Processes

Boring curved or redirected bores

175 73, 175170, 175173, E21B 704, E21B 102

Patent

active

059245000

ABSTRACT:
With a boring machine having a multistrand rod assembly (3) for producing boreholes in the ground, comprising a rotatable inner rod (29), an outer rod (19), at least one steering and digging tool (5; 33, 35, 36) driven by the inner rod and having an axis of rotation (22) inclined at an angle of for example 90.degree. to the axis of the rod (23), and a linear drive for the rod assembly (3, 19, 20), it is possible to perform both straight-ahead boring and, if only the steering and digging tool is driven, curve boring.

REFERENCES:
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patent: 4058176 (1977-11-01), Fischer et al.
patent: 4597454 (1986-07-01), Schoeffler
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patent: 5392868 (1995-02-01), Deken et al.
patent: 5421420 (1995-06-01), Malone et al.
patent: 5449046 (1995-09-01), Kinnan
patent: 5484029 (1996-01-01), Eddison
patent: 5738178 (1998-04-01), Williams et al.

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