| Patent Number |
Title Of Patent |
Date Issued |
| 7070635 |
Self sharpening polycrystalline diamond compact with high impact resistance |
July 4, 2006 |
| A polycrystalline diamond compact for use in cutting operations with a renewable sharp cutting edge, high abrasion resistance and high impact strength. The polycrystalline diamond is a composite composed of a matrix of coarse diamond interspersed with large agglomerated particles of ultr |
| 6852414 |
Self sharpening polycrystalline diamond compact with high impact resistance |
February 8, 2005 |
| A polycrystalline diamond compact for use in cutting operations with a renewable sharp cutting edge, high abrasion resistance and high impact strength. The polycrystalline diamond is a composite composed of a matrix of coarse diamond interspersed with large agglomerated particles of ultr |
| 6811610 |
Method of making enhanced CVD diamond |
November 2, 2004 |
| Single crystal CVD diamond is heated to temperatures of 1500.degree. C. to 2900.degree. C. under a pressure that prevents significant graphitization. The result is a CVD diamond with improved optical properties. |
| 6187068 |
Composite polycrystalline diamond compact with discrete particle size areas |
February 13, 2001 |
| A polycrystalline diamond compact for use in cutting operations that require improved impact strength and non-uniform edge wear. The compact includes a substrate, with multiple, laterally spaced, abrasive diamond particle areas segregated by different particle sizes bonded to the sub |
| 5754094 |
Sound generating apparatus |
May 19, 1998 |
| A sound generating apparatus for movable objects, particularly model trains, generates audible sounds from digital signal representations of actual train sounds prestored in a memory mounted on the object. In one embodiment, the stored digital sound representations are divided into s |
| 5645617 |
Composite polycrystalline diamond compact with improved impact and thermal stability |
July 8, 1997 |
| A compact blank for use in operations that require improved thermal stability, impact strength, and abrasion resistance is disclosed. The compact includes a substrate formed of tungsten carbide or other hard material with multiple abrasive diamond crystal layers bonded to the substra |
| 5564511 |
Composite polycrystalline compact with improved fracture and delamination resistance |
October 15, 1996 |
| A polycrystalline compact cutting element for use in operations that require high impact and abrasion resistance. The compact includes a substrate formed of tungsten carbide or other hard material with a diamond or cubic boron nitride layer bonded to a mounting surface on the substra |
| 5244368 |
High pressure/high temperature piston-cylinder apparatus |
September 14, 1993 |
| A high pressure/high temperature piston-cylinder-type apparatus has an electrically insulating diamond or cubic boron nitride coating disposed between one or both movable pistons and the surrounding core to electrically isolate the piston or pistons from the surrounding core. The ele |
| 5236674 |
High pressure reaction vessel |
August 17, 1993 |
| A high pressure reaction vessel includes an inner bushing surrounding a reaction charge. The inner bushing is formed of at least one material having a low shear strength that undergoes a polymorphic phase change to a more dense phase within the operating pressure range of the reaction |
| 5190734 |
Modified end assembly for high pressure, high temperature reaction vessels |
March 2, 1993 |
| An end cap apparatus for high pressure, high temperature reaction vessels having a reaction chamber containing a reaction charge includes a single member disposed in registry with the reaction charge in the reaction chamber which is formed of at least two or more materials, at least one |
| 5032147 |
High strength composite component and method of fabrication |
July 16, 1991 |
| A composite component suitable for high temperature applications which includes a composite compact that is thermally stable at temperatures up to 1200.degree. C., the composite compact including a thin layer of metal bonded directly to a polycrystalline table in a HP/HT press, and a |
| 5011515 |
Composite polycrystalline diamond compact with improved impact resistance |
April 30, 1991 |
| A compact blank for use in operations that require very high impact strength and abrasion resistance is disclosed. The compact comprises a substrate formed of tungsten carbide or other hard material with a diamond or cubic boron nitride layer bonded to the substrate. The interface be |
| 5011509 |
Composite compact with a more thermally stable cutting edge and method of manufacturing the same |
April 30, 1991 |
| A compact blank for use in operations that require very high abrasion resistance and a thermally stable cutting edge is disclosed. The compact comprises a substrate formed of tungsten carbide or other hard material with a polycrystalline diamond layer bonded to the substrate. The diamond |
| 4871377 |
Composite abrasive compact having high thermal stability and transverse rupture strength |
October 3, 1989 |
| A composite compact adapted for high-temperature uses, such as a cutter on a rotary drill bit, which includes a relatively thick table of diamond or boron nitride particles with a strong, chemically inert binder matrix and a thin metal layer bonded directly to the table in a HP/HT press. |
| 4828582 |
Polycrystalline abrasive grit |
May 9, 1989 |
| Diamond or CBN polycrystalline abrasive grit useful in tools for grinding or cutting is made by size reducing and leaching non-diamond or non-CBN material from a compact to provide polycrystalline abrasive grit having a selected and having a network of inter-connected, empty pores disper |
| 4776861 |
Polycrystalline abrasive grit |
October 11, 1988 |
| Diamond or CBN polycrystalline abrasive grit useful in tools for grinding or cutting is made by size reducing and leaching non-diamond or non-CBN material from a compact greater than 1,000 microns in diameter to provide polycrystalline abrasive grit having a size of from about 1 to about |
| 4661180 |
Method of making diamond tool |
April 28, 1987 |
| A polycrystalline diamond disk is bonded to a substrate by forming layers of powdered diamond material and then pressing and sintering the layers to bond the diamond material and to form disks thereof. A surface of one such disk is ground or lapped flat and then placed on a substrate wit |
