US Synthetic Corporation

Nicholas Christensen

Mark Pehrson Chapman

Damon Bart Crockett

Ronald W Ward

Kenneth Eugene Bertagnolli

Jair Jahaziel Gonzalez

Debkumar Mukhopadhyay

David Paul Miess

Mohammad N Sani

S Barrett Peterson

Benjamin Michael Spencer

Alexander Edward Black

Methods of laser cutting polycrystalline diamond tables and polycrystalline diamond compacts are disclosed. Laser cutting of the polycrystalline diamond table provides an alternative to electrical-discharge machining ('EDM'), grinding with a diamond wheel, or lapping with a diamond wheel. Grinding or lapping with a diamond wheel is relatively slow and expensive, as diamond is used to remove a diamond material. EDM cutting of the polycrystalline diamond table is sometimes impractical or even impossible, particularly when the cobalt or other infiltrant or catalyst concentration within the polycrystalline diamond table is very low (e.g., in the case of a leached polycrystalline diamond table). As such, laser cutting provides a valuable alternative machining method that may be employed in various processes such as laser scribing, laser ablation, and laser lapping.

Method for laser cutting polycrystalline diamond structures

Methods for laser cutting a polycrystalline diamond structure

Mirrors for a deflection unit in a scanning system, scanning systems using such mirrors, and methods of manufacturing such mirrors are disclosed. In an embodiment, a mirror for a deflection unit in a laser system includes a sintered polycrystalline diamond body including a plurality of randomly oriented diamond grains defining a plurality of interstitial regions. At least a portion of the interstitial regions includes a material disposed interstitially therein. The mirror includes a reflective surface formed at least partially from the sintered polycrystalline diamond body or provided thereon. The reflective surface exhibits a surface roughness of less than about 50 nm Rrms.

Mirror including polycrystalline diamond body for use with a motor, scanning systems including the same, and related methods

Methods for at least partially relieving stress within a polycrystalline diamond ('PCD') table of a polycrystalline diamond compact ('PDC') include partitioning the substrate of the PDC, the PCD table of the PDC, or both. Partitioning may be achieved through grinding, machining, laser cutting, electro-discharge machining, or combinations thereof. PDCs may include at least one stress relieving partition.

Polycrystalline diamond compacts with partitioned substrate, polycrystalline diamond table, or both

Bearing assemblies, apparatuses, and motor assemblies using the same are disclosed. In an embodiment, a bearing assembly may include a plurality of superhard bearing elements distributed circumferentially about an axis. Each of the superhard bearing elements may include a bearing surface. At least one of the plurality of superhard bearing elements may include at least one texture feature that may be formed in a lateral surface thereof. The bearing assembly may also include a support ring that carries the superhard bearing elements.

Bearing assemblies, apparatuses, and motor assemblies using the same

Methods for at least partially relieving stress within a polycrystalline diamond ('PCD') table of a polycrystalline diamond compact ('PDC') include partitioning the substrate of the PDC, the PCD table of the PDC, or both. Partitioning may be achieved through grinding, machining, laser cutting, electro-discharge machining, or combinations thereof. PDC embodiments may include at least one stress relieving partition.

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Spanish Fork, UT, United States of America

Nicholas Christensen