Stress-relieved diamond inserts

Details Stress-relieved diamond inserts Stress-relieved diamond inserts

2006-02-07

2009-06-09

Thompson, Kenneth (Department: 3672)

Boring or penetrating the earth

Bit or bit element

Specific or diverse material

C175S434000, C076S108100

Reexamination Certificate

active

07543662

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.

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Combined Search and Examination Report issued in Application No. GB0603068.8 dated Jun. 14, 2006 (5 pages).

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