Including Nonplanar Working Surface Patents (Class 76/81.8)
  • Oval sharpening rod having interrupted diamond coated surface and process of manufacturing same
    Patent number: 7153201
    Abstract: An oval rod sharpener having an interrupted diamond abrasive surface having plurality of holes forming wells for collecting filings during sharpening. The abrasive surface is formed by multiple layers of micron sized diamonds, such as monocrystalline diamonds. A plastic pad is provided on the tip end of the oval abrasive rod to protect a support surface on which the sharpener rests during a sharpening operation.
    Type: Grant
    Filed: July 12, 2004
    Date of Patent: December 26, 2006
    Assignee: Smith Abrasives, Inc.
    Inventor: Richard S Smith