Reamer having toroidal crusher body and method of use

Details Reamer having toroidal crusher body and method of use Reamer having toroidal crusher body and method of use

2006-08-15

2006-08-15

Neuder, William (Department: 3672)

Boring or penetrating the earth

Enlargement of existing pilot throughbore requiring...

C175S345000, C175S406000

Reexamination Certificate

active

07090034

ABSTRACT:
The present invention provides a reamer (100) having at least one journal body (110) and at least one toroidal cutter body (116). The toroidal cutter body (116) has a maximum diameter (MD), an outer perimeter (OP) and a plurality of cutting elements (112, 145, 149) on the cutting surface (118). The toroidal cutter body is rotatably attached to the journal (110). When in the installed position, the axis of rotation (RA) of the at least one toroidal cutter body (116) intersects the longitudinal axis of the drill string at an acute angle.

REFERENCES:
patent: 2101007 (1937-11-01), Maher
patent: 2124414 (1938-07-01), Goldman
patent: 3851719 (1974-12-01), Thompson et al.
patent: 4117895 (1978-10-01), Ward
patent: 4596295 (1986-06-01), Bengtsson
patent: 4967854 (1990-11-01), Barnetche-Gonzalez
patent: 5351764 (1994-10-01), Cherrington
patent: 5485888 (1996-01-01), England
patent: 2004/0188141 (2004-09-01), Slaughter et al.
patent: WO 03/080985 (2003-10-01), None

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