Button insert for rock drill bits

Details Button insert for rock drill bits Button insert for rock drill bits

1986-09-02

1988-10-11

Novosad, Stephen J.

Boring or penetrating the earth

Bit or bit element

Plural separable cutter elements

E21B 1052

Patent

active

047764139

ABSTRACT:
A button insert (10) for rock drill bits comprising a base portion (11) intended to be secured in the body of the drill bit and a cutting tip (12) being integral with the base portion (11). The cutting tip (12) comprises a portion (13) that is concave in an arbitrary longitudinal section through the button insert (10).

REFERENCES:
patent: 2689109 (1954-09-01), Curtis
patent: 3006424 (1961-10-01), Dahlin et al.
patent: 3388757 (1968-06-01), Fittinger
patent: 3442342 (1969-05-01), McElya et al.
patent: 4108260 (1978-08-01), Bozarth
patent: 4254840 (1981-03-01), Shay, Jr.
patent: 4375242 (1983-03-01), Galle
patent: 4406337 (1983-09-01), Dill
patent: 4570726 (1986-02-01), Hall
patent: 4595067 (1986-06-01), Drake

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