Boring or penetrating the earth – With tool shaft detail – Shaft carried guide or protector
Patent
1996-11-19
1998-09-08
Neuder, William P.
Boring or penetrating the earth
With tool shaft detail
Shaft carried guide or protector
1753254, 175408, E21B 1710
Patent
active
058031944
ABSTRACT:
A wear assembly for attachment to a protective sleeve for a drill bit sub wherein the wear assembly includes an elongate wear bar which has an interior surface for attachment to the protective sleeve. The wear bar also has an exterior surface. The wear bar further contains a slot opening at the exterior surface. The slot contains at least one hard insert affixed therein by brazing.
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BASCO Enterprises Drawing, Wear Bar (Oct. 12, 1995).
BASCO Enterprises, Inc. Brochure for Sub Saver Sleeve (date unknown).
Kennametal Inc.
Neuder William P.
Prizzi John J.
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