Patents Assigned to Smith Abrasives, Inc.
  • Retractable abrasive sharpener and carrying case
    Patent number: 7553220
    Abstract: A hand held retractable abrasive sharpener having a rod formed with a tapered end portion and a partially cylindrical opposite end portion. A part of the partially cylindrical opposition end portion is flat. A slot is formed in the rod. Substantially all of the outer surfaces include layers of the rod have an abrasive material. The rod is carried in a carrying case for transport and storage in a locked relationship and being capable of being released and withdrawn for sharpening with carrying case serving as a holder.
    Type: Grant
    Filed: October 11, 2007
    Date of Patent: June 30, 2009
    Assignee: Smith Abrasives, Inc.
    Inventor: Richard S. Smith
  • 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
  • Blade sharpening apparatus
    Patent number: 6186874
    Abstract: A blade sharpening apparatus having a hollow housing with an internal drive motor for inducing back and forth movement on a pair of aligned elongated abrasive stones. The abrasive stones are retained by a stone holder and possess a cross section in the form of a equilateral triangle. A slidable guide is slidably mounted on the housing above the pair of abrasive stones. The abrasive stones have a portion of two faces extend through the slidable guide. The slidable guide includes a pair of flat guide surfaces for supporting a blade to be sharpened.
    Type: Grant
    Filed: March 23, 1999
    Date of Patent: February 13, 2001
    Assignee: Smith Abrasives, Inc.
    Inventor: Richard Smith
  • Knife and scissors sharpener
    Patent number: D526876
    Type: Grant
    Filed: March 14, 2005
    Date of Patent: August 22, 2006
    Assignee: Smith Abrasives, Inc.
    Inventor: Richard S. Smith
  • Oval knife sharpening rod
    Patent number: D529779
    Type: Grant
    Filed: July 12, 2004
    Date of Patent: October 10, 2006
    Assignee: Smith Abrasives, Inc.
    Inventor: Richard S. Smith
  • Abrasive stone
    Patent number: D486052
    Type: Grant
    Filed: September 3, 2002
    Date of Patent: February 3, 2004
    Assignee: Smith Abrasives, Inc.
    Inventor: Richard S. Smith
  • Electric sharpener
    Patent number: D575124
    Type: Grant
    Filed: March 15, 2008
    Date of Patent: August 19, 2008
    Assignee: Smith Abrasives Inc.
    Inventor: Richard S. Smith
  • Electric sharpener
    Patent number: D575125
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: August 19, 2008
    Assignee: Smith Abrasives, Inc.
    Inventor: Richard S. Smith
  • Pocket abrasive sharpener
    Patent number: D578581
    Type: Grant
    Filed: July 30, 2007
    Date of Patent: October 14, 2008
    Assignee: Smith Abrasives, Inc.
    Inventor: Richard Smith
  • Abrasive stone
    Patent number: D493684
    Type: Grant
    Filed: September 15, 2003
    Date of Patent: August 3, 2004
    Assignee: Smith Abrasives, Inc.
    Inventor: Richard S. Smith
  • Abrasive sharpener
    Patent number: D587088
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: February 24, 2009
    Assignee: Smith Abrasives, Inc.
    Inventor: Richard S. Smith
  • Knife and scissors sharpener
    Patent number: D587549
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: March 3, 2009
    Assignee: Smith Abrasives, Inc.
    Inventor: Richard S. Smith
  • Two step knife sharpener
    Patent number: D587550
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: March 3, 2009
    Assignee: Smith Abrasives, Inc.
    Inventor: Richard S. Smith
  • Diamond bench stone
    Patent number: D498654
    Type: Grant
    Filed: October 20, 2003
    Date of Patent: November 23, 2004
    Assignee: Smith Abrasives, Inc.
    Inventor: Richard S. Smith
  • Two step knife sharpener
    Patent number: D499004
    Type: Grant
    Filed: October 20, 2003
    Date of Patent: November 30, 2004
    Assignee: Smith Abrasives, Inc.
    Inventor: Richard S. Smith
  • Abrasive glass shaver
    Patent number: D499323
    Type: Grant
    Filed: October 6, 2003
    Date of Patent: December 7, 2004
    Assignee: Smith Abrasives, Inc.
    Inventor: Richard S. Smith
  • Knife sharpener
    Patent number: D365740
    Type: Grant
    Filed: September 6, 1994
    Date of Patent: January 2, 1996
    Assignee: Smith Abrasives, Inc.
    Inventor: Richard S. Smith