1
Ronald K Eyre: Thermally stable diamond polycrystalline diamond constructions. Smith International, Osha • Liang, April 14, 2009: US07517589 (100 worldwide citation)

Thermally stable diamond constructions comprise a diamond body having a plurality of bonded diamond crystals and interstitial regions disposed among the crystals. A metallic substrate is attached to the body. The body includes a first region substantially free of a catalyst material that extends a p ...


2
Ronald K Eyre, Madapusi K Keshavan: Method for forming a non-uniform interface adjacent ultra hard material. Smith International, Christie Parker & Hale, February 27, 2001: US06193001 (93 worldwide citation)

A non-uniform interface is formed between a polycrystalline ultra hard material layer and a cemented tungsten carbide substrate, or a polycrystalline ultra hard material layer and a transition layer, or a transition layer and a substrate of a cutting element. A first sheet made from an intermediate ...


3
Ronald K Eyre, Madapusi K Keshavan: Cutting element having a substrate, a transition layer and an ultra hard material layer. Smith International, Christie Parker & Hale, May 17, 2005: US06892836 (79 worldwide citation)

A non-uniform interface is formed between a polycrystalline ultra hard material layer and a cemented tungsten carbide substrate, or a polycrystalline ultra hard material layer and a transition layer, or a transition layer and a substrate of a cutting element. A first sheet made from an intermediate ...


4
Ronald K Eyre: Thermally stable diamond polycrystalline diamond constructions. Smith International, Osha Liang, October 27, 2009: US07608333 (78 worldwide citation)

Thermally stable diamond constructions comprise a diamond body having a plurality of bonded diamond crystals, a plurality of interstitial regions disposed among the crystals, and a substrate attached to the body. The body includes a working surface and a side surface extending away from the working ...


5
Ronald K Eyre, Anthony Griffo, Thomas W Oldham: Thermally stable diamond polycrystalline diamond constructions. Smith International, Osha • Liang, July 13, 2010: US07754333 (62 worldwide citation)

Thermally stable diamond constructions comprise a diamond body having a plurality of bonded diamond crystals and a plurality of interstitial regions disposed among the crystals. A metallic substrate is attached to the diamond body. A working surface is positioned along an outside portion of the diam ...


6
Nathan R Anderson, J Daniel Belnap, Chris E Cawthorne, Ronald K Eyre, Madapusi K Keshavan, Per I Nese, Michael A Siracki, Gary R Portwood: Engineered enhanced inserts for rock drilling bits. Smith International, Christie Parker & Hale, March 13, 2001: US06199645 (60 worldwide citation)

Enhanced inserts are formed having a cylindrical grip and a protrusion extending from the grip. An ultra hard material layer is bonded on top of the protrusion. The inserts are mounted on a rock bit and contact the earth formations off center. The ultra hard material layer is thickest at a critical ...


7
Nathan R Anderson, J Daniel Belnap, Chris E Cawthorne, Ronald K Eyre, Madapusi K Keshavan, Per I Nese, Michael A Siracki, Gary R Portwood: Engineered enhanced inserts for rock drilling bits. Smith International, Christie Parker & Hale, November 26, 2002: US06484826 (60 worldwide citation)

Enhanced inserts are formed having a cylindrical grip and a protrusion extending from the grip. An ultra hard material layer is bonded on top of the protrusion. The inserts are mounted on a rock bit and contact the earth formations off center. The ultra hard material layer is thickest at a critical ...


8
Stewart Middlemiss, Ronald K Eyre: Ultra hard material cutter with shaped cutting surface. Smith International, Christie Parker & Hale, April 22, 2003: US06550556 (60 worldwide citation)

A cutting layer is provided having a radially extending depression formed on the exposed surface of the cutting element's cutting layer. A corresponding depression may be formed on the substrate end surface below the depression formed on the cutting layer. Furthermore, secondary shallower depre ...


9
Nathan R Anderson, Ronald K Eyre, Madapusi K Keshavan, Ghanshyam Rai: Method for forming a polycrystalline layer of ultra hard material. Smith International, Christie Parker & Hale, June 16, 1998: US05766394 (58 worldwide citation)

A polycrystalline diamond layer is bonded to a cemented metal carbide substrate by this process. A layer of dense high shear compaction material including diamond or cubic boron nitride particles is placed adjacent to a metal carbide substrate. The particles of diamond have become rounded instead of ...


10
Ghanshyam Rai, Ronald K Eyre, Nathan R Anderson: Non-planar interfaces for cutting elements. Smith International, Christie Parker & Hale, March 28, 2000: US06041875 (55 worldwide citation)

This invention is directed to cutting elements having an ultra hard cutting layer such as polycrystalline diamond or polycrystalline cubic boron nitride bonded on a cemented carbide substrate. The interface between the substrate and the cutting layer of each such cutting element is non-planar. The n ...