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Class Information
Number: 451/420
Name: Abrading > Attachment > To cutting machine to sharpen blade > Rotary abrading tool
Description: Machine knife sharpening attachment in which the knife is ground by a tool having only a rotary movement.










Sub-classes under this class:

Class Number Class Name Patents
451/421 Rotary reciprocating tool 38
451/422 Work actuated 13


Patents under this class:

Patent Number Title Of Patent Date Issued
8702477 Polishing pad sub plate Apr. 22, 2014
8690642 Agricultural implement mountable blade sharpening system Apr. 8, 2014
8535120 Blade sharpening system for agricultural implements Sep. 17, 2013
8220383 Food product slicer with timed sharpening operation Jul. 17, 2012
7854650 Knife sharpener Dec. 21, 2010
7815493 Apparatus and method for positioning a device near a workpiece during machining operations Oct. 19, 2010
7666067 Method and device for sharpening a cutting tool Feb. 23, 2010
7431637 Saw-setting machine for saw chain Oct. 7, 2008
7390243 Sharpener for blades of food slicers Jun. 24, 2008
7134937 Food product slicer with knife sharpener and associated knife guard Nov. 14, 2006
7125325 Portable sharpening system for a dual-knife cutting machine Oct. 24, 2006
6910959 Fixture for a grinding or polishing wheel Jun. 28, 2005
6709319 Sharpener assembly for a food slicer and related method Mar. 23, 2004
6585578 Girinding wheel machine bracket adjustable in angle Jul. 1, 2003
6503135 Grinding device Jan. 7, 2003
6110018 Apparatus and methods of sharpening cutting tools Aug. 29, 2000
5964648 Chipper knife grinding method and apparatus Oct. 12, 1999
5941148 Automatic slitter blade sharpener Aug. 24, 1999
5755825 Sharpener for slitting blade May. 26, 1998
5626065 Cutting device with automatic sharpener May. 6, 1997
5620363 Powered grinding tool Apr. 15, 1997
5618028 Power tool adapter Apr. 8, 1997
5609082 Lubrication aid for treating cutting blade and sharpener Mar. 11, 1997
5591072 Sharpening device for food slicer Jan. 7, 1997
5241886 Apparatus and methods for cutting rods into lengths for cigarette makers Sep. 7, 1993
5209025 Process for sharpening the knives of a rotating drum and adjusting the fixed counter-knife cooperating therewith and device for carrying out this process May. 11, 1993
5152105 Device for sharpening rotary blades Oct. 6, 1992
5142946 Sharpener for circular saws Sep. 1, 1992
4843767 Automatic forage harvester knife sharpening system Jul. 4, 1989
4821613 Method and apparatus for log saw blade sharpening Apr. 18, 1989
4762040 Blade sharpening and guide mechanism Aug. 9, 1988
4746330 Method and apparatus for lapping reel mowers May. 24, 1988
4732064 Apparatus and method for sharpening edges of reciprocating blade Mar. 22, 1988
4713950 Device adapted to move the sharpening grinding wheels in a leather splitting machine close to and away from a cutting blade Dec. 22, 1987
4643061 Rotary blade sheet material cutter with sharpener Feb. 17, 1987
4584917 Automatic blade diameter compensation for log saws Apr. 29, 1986
4503643 Sharpener assembly for the cutting cylinder of a crop harvester Mar. 12, 1985
4472990 Cutting device for continuous rods of smoking products Sep. 25, 1984
4442599 Sharpener construction for fabric cutting machine Apr. 17, 1984
4331011 Automatic roughing machine May. 25, 1982
4294047 Method of sharpening lateral edges and end edges of a blade during reciprocation thereof Oct. 13, 1981
4173160 Machine for cutting the lead ends of components mounted at printed-wiring boards Nov. 6, 1979
4065880 Sharpener for cut-off having a helical knife Jan. 3, 1978
4033214 Blade sharpener Jul. 5, 1977











 
 
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