Patent · US Active

Stress-relieved diamond inserts

US7543662B2 · kind B2 · utility

41Cited by

20References

20Claims

0Family size

Assignee

SMITH INTERNATIONAL, INC. · US

Inventors

J. Daniel Belnap · Pleasant Grove, US
Lynn Belnap · Spanish Fork, US
Christopher A. Tucker · Provo, US

Key dates

Filing date	Feb 7, 2006
Grant date	Jun 9, 2009
Priority date	—
Expiry date	Jun 9, 2026

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B10/573
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A drill bit including at least one stress-relieved cutting element, wherein the at least one cutting element is mounted on the drill bit, wherein the stress-relieved cutting element includes a substrate, at least one transition layer disposed upon the substrate and a polycrystalline diamond layer having a thickness of at least 0.008 inches disposed upon the at least one transition layer.

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