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Publication numberUST102901 I4
Publication typeGrant
Application numberUS 06/298,271
Publication dateApr 5, 1983
Filing dateAug 31, 1981
Priority dateAug 31, 1981
Publication number06298271, 298271, US T102901 I4, US T102901I4, US-I4-T102901, UST102901 I4, UST102901I4
InventorsLarry A. Offenbacher
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Method of fabricating a bearing
US T102901 I4
Abstract
The mating halves 7 and 11 of a new type of thrust bearing for a down hole drilling motor 1 are fabricated by a technique which ensures that the composite diamond compact inserts 9 or 13 are coplanar with each other. Composite compacts are utilized having a chamfer on both the diamond table 18 and the substrate 19. These hard inserts are inserted into recesses 17 in steel bearing body rings 8 or 12, said recesses being the same depth as the substrate. The composite compacts are furnace brazed below the degradation temperature of the diamond. During brazing a weight is placed on the compacts to maintain their coplanar relationship. The space between the inserts 15 is maintained at less than half their diameter. This fabrication technique results in a smooth running, low friction thrust bearing for rotating equipment.
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Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5037212 *Nov 29, 1990Aug 6, 1991Smith International, Inc.Bearing structure for downhole motors
US5480233 *Oct 14, 1994Jan 2, 1996Cunningham; James K.Thrust bearing for use in downhole drilling systems
US6190050Jun 22, 1999Feb 20, 2001Camco International, Inc.System and method for preparing wear-resistant bearing surfaces
US8950519Sep 16, 2011Feb 10, 2015Us Synthetic CorporationPolycrystalline diamond compacts with partitioned substrate, polycrystalline diamond table, or both
US8961019May 10, 2011Feb 24, 2015Smith International, Inc.Flow control through thrust bearing assembly
US9062505Jun 22, 2011Jun 23, 2015Us Synthetic CorporationMethod for laser cutting polycrystalline diamond structures
US9080385 *May 22, 2013Jul 14, 2015Us Synthetic CorporationBearing assemblies including thick superhard tables and/or selected exposures, bearing apparatuses, and methods of use
US9297411 *Mar 28, 2012Mar 29, 2016Us Synthetic CorporationBearing assemblies, apparatuses, and motor assemblies using the same
US9334694Aug 5, 2014May 10, 2016Us Synthetic CorporationPolycrystalline diamond compacts with partitioned substrate, polycrystalline diamond table, or both
US9353791 *Jan 29, 2014May 31, 2016Us Synthetic CorporationBearing assemblies, apparatuses, and motor assemblies using the same
US20100264134 *Oct 21, 2010Us Synthetic CorporationApparatuses and methods for induction heating
US20130156357 *Mar 28, 2012Jun 20, 2013Us Synthetic CorporationBearing assemblies, apparatuses, and motor assemblies using the same
US20140348452 *May 22, 2013Nov 27, 2014Us Synthetic CorporationBearing assemblies including thick superhard tables and/or selected exposures, bearing apparatuses, and methods of use
Classifications
U.S. Classification29/898.041, 384/907, 384/95
International ClassificationB23P15/00, F16C17/04, E21B4/00
Cooperative ClassificationE21B4/003, F16C17/04, Y10T29/49645, B23P15/003, Y10S384/907
European ClassificationB23P15/00C, F16C17/04, E21B4/00B