Boring or penetrating the earth – Bit or bit element – With fluid conduit lining or element
Patent
1991-11-12
1994-03-29
Neuder, William P.
Boring or penetrating the earth
Bit or bit element
With fluid conduit lining or element
1754201, E21B 1046
Patent
active
052976432
ABSTRACT:
A drill bit for drilling holes in a work surface including a hard wear-resistant insert and a metal body including a top working surface of an irregular surface configuration having a slot for retaining the hard wear-resistant insert. The body having a metal grain structure substantially parallel with the contour of the body. In a preferred embodiment the body is formed by cold-heading.
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Metals Handbook, 8th Edition, vol. 4, "Forming" American Society for Metals, pp. 465-475.
Metals Handbook, 9th Edition, vol. 14, "Forming and Forging" ASM International, pp. 291-298.
Elam James E.
Ewing Paul E.
Montgomery, Jr. Robert H.
Sheirer Daniel C.
Kennametal Inc.
Meenan Larry R.
Neuder William P.
NSS Industries
Prizzi John J.
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