Fixed cutter drill bit with non-cutting erosion resistant...

Details Fixed cutter drill bit with non-cutting erosion resistant... Fixed cutter drill bit with non-cutting erosion resistant...

2007-07-03

2007-07-03

Thompson, Kenneth (Department: 3672)

Boring or penetrating the earth

Bit or bit element

Noncutting portion forwardly of cutting portion

C175S426000, C175S431000, C408S018000

Reexamination Certificate

active

11163529

ABSTRACT:
The present invention is directed to a drill bit with non-cutting erosion resistant inserts. In one illustrative embodiment, the apparatus comprises a matrix drill bit body comprising a plurality of blades, a plurality of cutting elements positioned on each of the blades, the cutting elements defining a plurality of web regions, and a plurality of spaced apart, non-cutting erosion resistant inserts positioned along a face of at least one of the blades, at least a portion of each of the non-cutting erosion resistant inserts being positioned in front of one of the web regions.

REFERENCES:
patent: 4397361 (1983-08-01), Langford, Jr.
patent: 5115873 (1992-05-01), Pastusek
patent: 5531281 (1996-07-01), Murdock
patent: 5992549 (1999-11-01), Fuller
patent: 6328117 (2001-12-01), Berzas et al.
patent: 7128168 (2006-10-01), Youan
patent: 2002/0069725 (2002-06-01), Watson et al.
patent: 2086451 (1982-05-01), None

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