Patent · US Active

Wear resistant tool

US7469972B2 · kind B2 · utility

60Cited by

90References

15Claims

0Family size

Inventors

David R. Hall · Provo, US
Ron Crockett · Provo, US
Jeff Jepson · Spanish Fork, US
Joe Fox · Spanish Fork, US
Michael Barnhill · El Cajon, US

Key dates

Filing date	Jun 16, 2006
Grant date	Dec 30, 2008
Priority date	—
Expiry date	Jun 16, 2026

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21C35/1833
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

In one aspect of the invention, a wear-resistant tool is disclosed which may comprise first and second cemented metal carbide segments chemically bonded together at an interface. The first segment may comprise a first coefficient of thermal expansion (CTE) at least at its interfacial surface and the second segment may comprise a second CTE at least at its interfacial surface less than the CTE of the first segment. The first segment may further comprise a cross-sectional thickness substantially equal to or greater than a cross-sectional thickness of the second segment at the interface.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.