Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
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.
Images(1)
Previous page
Next page
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
Classifications
U.S. Classification29/898.041, 384/907, 384/95
International ClassificationB23P15/00, F16C17/04, E21B4/00
Cooperative ClassificationF16C17/04, Y10S384/907, B23P15/003, E21B4/003
European ClassificationB23P15/00C, F16C17/04, E21B4/00B