Hardfaced mill tooth rotary cone rock bit

Details Hardfaced mill tooth rotary cone rock bit Hardfaced mill tooth rotary cone rock bit

1991-04-24

1992-10-06

Parker, Roscoe V.

Metal tools and implements, making

Blank or process

Drill

B21K 502

Patent

active

051521946

ABSTRACT:
A milled teeth rotary cone rock bit consists of chisel crested milled teeth with generously radiused corners at the ends of the crest. A concave depression is formed in the crest between the radiused ends. A layer of hardfacing material formed over each tooth is thicker at the corners and in the concave depressions in the crest to provide a means to inhibit wear of the hardfacing as the bit works in a borehole.

REFERENCES:
patent: 2660405 (1953-11-01), Scott et al.
patent: 3003370 (1961-10-01), Coulter, Jr.
patent: 4726432 (1988-02-01), Scott et al.
patent: 4836307 (1989-06-01), Keshavan et al.

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