Attack tool
OwnerDavid R. Hall, Ronald Crockett +1inventors
InventorsDavid R. Hall, Ronald Crockett, Jeff Jepson
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Abstract
In one aspect of the invention, an attack tool has a wear-resistant base suitable for attachment to a driving mechanism. A first end of a generally frustoconical first cemented metal carbide segment bonded to the base. A second metal carbide segment is bonded to a second end of the first carbide segment at an interface opposite the base. The first end has a cross sectional thickness of about 0.250 to 0.750 inches and the second end has a cross sectional thickness of about 1 to 1.50 inches. The first cemented metal carbide segment also has a volume of 0.250 cubic inches to 0.600 cubic inches.
Claims18
An attack tool, comprising:
- a wear-resistant base suitable for attachment to a driving mechanism;
- a first end of a generally frustoconical first cemented metal carbide segment bonded to the base at a first interface;
- a second metal carbide segment bonded to a second end of the first carbide segment at a second interface opposite the base;
- and
- the first and second interfaces being connected by an uninterrupted straight conical sidewall;
- wherein a superhard material bonded to the second cemented metal carbide segment is 0.020 to 0.100 inches away from the interface between the first and second carbide segments.
An attack tool, comprising:
- a wear-resistant base suitable for attachment to a driving mechanism;
- a first cemented metal carbide segment bonded to the base at a first interface;
- and
- a second metal carbide segment bonded to the first carbide segment at a second interface;
- wherein the tool comprises a ratio of the length of the first and second cemented metal carbide segments to the length of the whole attack tool which is 1/5 to 1/3;
- the first and second interfaces being connected by an uninterrupted straight conical sidewall;
- wherein a superhard material bonded to the second cemented metal carbide segment is 0.020 to 0.100 inches away from the interface between the first and second carbide segments.
Dependencies are inferred from the claim text.