Jewelry ring and method of manufacturing same

  • US 6,928,734 B1
  • Filed: 04/28/2003
  • Issued: 08/16/2005
  • Est. Priority Date: 09/08/1997
  • Status: Active Grant
First Claim
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1. A method of providing a tungsten-carbide based annular jewelry article having a desired surface profile and including an annular band, which comprises:

  • providing a mixture of two or more powdered materials which comprises at least 50 weight percent to less than 85 weight percent tungsten carbide to form the annular band of the annular article into a pressure mold having a cavity of predetermined annular configuration and sized formed therein, the size of the mold being greater than the final size of the annular band;

    compressing the powdered material mixture at a pressure sufficient to form an annular blank; and

    sintering the annular blank at a temperature sufficient to form the tungsten-carbide based annular jewelry article so as to be long wearing and virtually indestructible during normal use thereof.

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