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Class Information
Number: 451/321
Name: Abrading > Machine > Stationary tool > Rigid > Reciprocating work holder > Blade sharpener
Description: Abrading machine especially adapted to sharpen the edge of a cutting member.










Sub-classes under this class:

Class Number Class Name Patents
451/322 Blade reversing 5


Patents under this class:

Patent Number Title Of Patent Date Issued
8661952 Cutting machine Mar. 4, 2014
8491361 Windshield wiper resurfacing tool Jul. 23, 2013
8348725 Grinding and honing fixture with clamping jaws Jan. 8, 2013
8323077 Blade sharpening assembly Dec. 4, 2012
8303381 Knife sharpener with anti-rocking blade-conforming clamping members Nov. 6, 2012
8262438 Knife sharpener Sep. 11, 2012
7854650 Knife sharpener Dec. 21, 2010
7803038 Knife maintenance apparatus Sep. 28, 2010
7722443 Knife blade dressing apparatus May. 25, 2010
7507149 Drill bit dresser Mar. 24, 2009
7494403 Knife sharpener with improved knife guides Feb. 24, 2009
7121935 Blade sharpener Oct. 17, 2006
7104876 Cutter-grinder Sep. 12, 2006
6899606 Rotary grinding machine May. 31, 2005
6848983 Drywall knife or blade refinisher tool Feb. 1, 2005
6846229 Handheld retractable pull-through knife sharpener Jan. 25, 2005
6824457 Angle measurement device Nov. 30, 2004
6814652 Method to sharpen the cutting knife of a knife ring chipper Nov. 9, 2004
6663475 Grinding apparatus Dec. 16, 2003
6595837 Sharpening stand for a cutlery device Jul. 22, 2003
6368196 Blade sharpener for curved and straight edge blades Apr. 9, 2002
6241595 Edger blade sharpener Jun. 5, 2001
6146257 Manually-operated sharpening apparatus Nov. 14, 2000
6116995 Drill bit sharpening apparatus Sep. 12, 2000
6074293 Apparatus for finishing surfaces Jun. 13, 2000
6030281 Sharpening apparatus Feb. 29, 2000
5944592 Sharpener apparatus Aug. 31, 1999
5704829 Hand-held skate blade edge deburring tool Jan. 6, 1998
5582535 Method and apparatus for knife and blade sharpening Dec. 10, 1996
5547419 Knives and scissors sharpener Aug. 20, 1996
5520574 Dental instrument sharpening device May. 28, 1996
5018315 Apparatus for holding and storing sharpening stones May. 28, 1991
4217735 Tool sharpening device Aug. 19, 1980











 
 
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