Back reamer apparatus

Details Back reamer apparatus Back reamer apparatus

1996-04-29

1997-11-18

Tsay, Frank

Boring or penetrating the earth

Enlargement of existing pilot throughbore requiring...

175406, E21B 728

Patent

active

056878052

ABSTRACT:
A back reamer apparatus is configured to be attached to a pipe section of a drilling rig for back reaming and compacting a pilot bore. The back reamer apparatus includes a body having a front end configured to be coupled to the pipe section, and at least three planar side walls configured to form a pyramid-shaped section which is tapered downwardly toward the front end of the body to compact the soil and form an enlarged bore upon rotation of the body by the drilling rig. The body is formed to include an internal passageway for receiving a drilling fluid. Each of the side walls is formed to include at least one aperture in communication with the passageway to permit the drilling fluid to pass through the at least one aperture formed in each side wall.

REFERENCES:
patent: 1544757 (1925-07-01), Hufford et al.
patent: 2664273 (1953-12-01), Merrick
patent: 3874463 (1975-04-01), Hicks et al.
patent: 3894402 (1975-07-01), Cherrington
patent: 4679637 (1987-07-01), Cherrington et al.
patent: 5220964 (1993-06-01), Deken et al.
patent: 5301758 (1994-04-01), Jenno
patent: 5390750 (1995-02-01), Deken et al.
patent: 5505558 (1996-04-01), Brown

Affiliated with

Also associated with

Rating

Back reamer apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1559186