Chisel insert for rock bits

Details Chisel insert for rock bits Chisel insert for rock bits

1993-04-08

1994-06-21

Novosad, Stephen J.

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

175426, E21B 1052, E21B 1058

Patent

active

053221389

ABSTRACT:
A tungsten carbide chisel insert for rock bits is disclosed having a cylindrical base section and a cutting tip section, the top of the tip section having an elongated crest, the remainder of the cutting tip section below the crest is a contoured surface formed having cross-sections being shaped as to provide for better overall performance.

REFERENCES:
patent: 3442342 (1969-05-01), McElya et al.
patent: 4108260 (1978-08-01), Bozarth
patent: 4334586 (1982-06-01), Schumacher

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