Method for assembling an underreaming tool

Boring or penetrating the earth – Processes

Reexamination Certificate

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Details

C175S269000, C175S286000, C175S406000

Reexamination Certificate

active

07958951

ABSTRACT:
An underreaming tool may include a tubular body, a drive tube, at least one blade element (“the blade element”), at least one wedge element (“the wedge element”), and a stop mechanism. The drive tube may include at least one longitudinal groove (“the longitudinal groove”) axially disposed along a length of the drive tube. The wedge element may include a first side having at least one lateral projection (“the lateral projection”) configured to axially slide into the longitudinal groove to couple the wedge element to the drive tube. The stop mechanism comprises a threaded sleeve configured to screw onto the drive tube to lock the wedge element in the longitudinal groove once the lateral projection is slid into the longitudinal groove.

REFERENCES:
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patent: 5368114 (1994-11-01), Tandberg et al.
patent: 6213226 (2001-04-01), Eppink et al.
patent: 6615933 (2003-09-01), Eddison
patent: 7252163 (2007-08-01), Ollerenshaw et al.
patent: 2005/0241856 (2005-11-01), Lassoie et al.
patent: 2007/0089912 (2007-04-01), Eddison et al.
patent: 0 397 417 (1990-11-01), None
patent: 2004/097163 (2004-11-01), None
International Search Report, PCT/BE2005/000145, 4 pgs, Jun. 12, 2006.

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