U.S. patent number T102,901 [Application Number 06/298,271] was granted by the patent office on 1983-04-05 for method of fabricating a bearing. Invention is credited to Larry A. Offenbacher.

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United States Patent	T102,901
Offenbacher	April 5, 1983

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Method of fabricating a bearing

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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Inventors:	Offenbacher; Larry A. (Columbus, OH)
Family ID:	23149796
Appl. No.:	06/298,271
Filed:	August 31, 1981

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Current U.S. Class:	29/898.041; 384/907; 384/95
Current CPC Class:	B23P 15/003 (20130101); E21B 4/003 (20130101); F16C 17/04 (20130101); F16C 33/26 (20130101); Y10S 384/907 (20130101); F16C 2352/00 (20130101); Y10T 29/49645 (20150115)
Current International Class:	B23P 15/00 (20060101); E21B 4/00 (20060101); F16C 17/04 (20060101); B21D 053/10 ()

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