Guided earth boring tool

Boring or penetrating the earth – Processes – Boring curved or redirected bores

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

175 19, E21B 414, E21B 420, E21B 708

Patent

active

048587044

ABSTRACT:
Long utility holes, for gas lines, electrical conduit, communications conduit and the like, may be bored or pierced horizontally through the earth, particularly under obstacles, such as buildings, streets, highways, rivers, lakes, etc. Such holes may be bored by an underground drilling mole (underground percussion drill) supported on a hollow drill rod and supplied with compressed air through the rod to operate an air hammer which strikes an anvil having an external boring face, preferably constructed to apply an asymmetric boring force. The drill rod is operated by a drill rig on the surface or recessed in special pit for horizontal drilling and provides for additional sections of pipe or hollow rod as the boring progresses. The asymmetric boring force causes the boring path to curve and, when straight line drilling is needed, the drill rod is rotated to counteract the asymmetric boring force. An alternative boring tool utilizes an expander supported on a solid or hollow drill rod and having a base end supported on and larger in diameter than the rod and tapering longitudinally forward therefrom. It may have a uniform extension protruding a short distance forward. The tool penetrates the earth upon longitudinal movement of the drill rod.

REFERENCES:
patent: 1894446 (1933-01-01), McKenny
patent: 2181284 (1939-11-01), Potts
patent: 2517494 (1950-08-01), Kiss et al.
patent: 3905431 (1975-09-01), Hasewend
patent: 4117895 (1978-10-01), Ward et al.
patent: 4135588 (1979-01-01), Wagner
patent: 4453603 (1984-06-01), Voss et al.
patent: 4694913 (1987-09-01), McDonald et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Guided earth boring tool does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Guided earth boring tool, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Guided earth boring tool will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2413574

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.