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Class Information
Number: 451/261
Name: Abrading > Machine > Rotary tool > Rotary disk > One-way work traverse > Opposed abrading tools
Description: Abrading machine having a plurality of abrading tools located on opposite or different sides of the workpiece which simultaneously or successively treat such opposite or different sides thereof.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8512103 Cutting tool sharpener Aug. 20, 2013
8267745 Methods of grinding semiconductor wafers having improved nanotopology Sep. 18, 2012
8221190 Polishing apparatus cofigured to simultaneously polish two surfaces of a work Jul. 17, 2012
8221198 Polishing apparatus for polishing a work having two surfaces Jul. 17, 2012
8145342 Methods and systems for adjusting operation of a wafer grinder using feedback from warp data Mar. 27, 2012
8113913 Method for the simultaneous grinding of a plurality of semiconductor wafers Feb. 14, 2012
8066553 Wafer clamping device for a double side grinder Nov. 29, 2011
8025554 Method of polishing work Sep. 27, 2011
7854650 Knife sharpener Dec. 21, 2010
7815489 Method for the simultaneous double-side grinding of a plurality of semiconductor wafers Oct. 19, 2010
7775858 Machine for dressing the edges and outer surfaces of flat workpieces Aug. 17, 2010
7722443 Knife blade dressing apparatus May. 25, 2010
7662023 Double side wafer grinder and methods for assessing workpiece nanotopology Feb. 16, 2010
7601049 Double side wafer grinder and methods for assessing workpiece nanotopology Oct. 13, 2009
7500905 Grinding apparatus and grinding system Mar. 10, 2009
7481698 Sintered rare earth magnetic alloy wafer surface grinding machine Jan. 27, 2009
7207870 Seal assembly manufacturing methods and seal assemblies manufactured thereby Apr. 24, 2007
7198558 Knife blade dressing apparatus Apr. 3, 2007
7179155 Device for grinding liquid crystal display panel Feb. 20, 2007
7172499 Tool for polishing the edge of a knife Feb. 6, 2007
7029366 Method and apparatus for abrasive circular machining Apr. 18, 2006
7021990 Method and apparatus for circular grinding Apr. 4, 2006
7001244 Polishing apparatus Feb. 21, 2006
6887127 Polishing apparatus May. 3, 2005
6881133 Method of grinding for a vertical type of double disc surface grinding machine for a brake disc Apr. 19, 2005
6875093 Sharpening device Apr. 5, 2005
6843704 Method and apparatus for automatically loading a double-sided polishing machine with wafer crystals Jan. 18, 2005
6783446 Chemical mechanical polishing apparatus and method of chemical mechanical polishing Aug. 31, 2004
6755724 Device for grinding liquid crystal display panel Jun. 29, 2004
6726525 Method and device for grinding double sides of thin disk work Apr. 27, 2004
6648735 Method of abrading both faces of work piece Nov. 18, 2003
6485357 Dual-feed single column double-disk grinding machine Nov. 26, 2002
6280304 Abrasive machine Aug. 28, 2001
6113478 Polishing apparatus with improved alignment of polishing plates Sep. 5, 2000
6113489 Ingot slicing method, an ingot manufacturing method and a sliced ingot grinding apparatus Sep. 5, 2000
5997390 Polishing apparatus with improved alignment of polishing plates Dec. 7, 1999
5934983 Double-side grinding method and double-side grinder Aug. 10, 1999
5772495 Method and apparatus for producing photo filmstrip Jun. 30, 1998
5645472 Polishing device Jul. 8, 1997
5613898 Device for producing inclined surfaces and grooves on friction pads Mar. 25, 1997
5115599 Apparatus for removal of workpiece elements, particularly bolt, rod or disk-shaped elements, from a cutting apparatus May. 26, 1992
4787112 Edge brush for electroplated strip Nov. 29, 1988
4753045 Adjustable double end grinding machine Jun. 28, 1988
4704823 Abrasive surfacing machine Nov. 10, 1987
4660327 Glass plate grinding apparatus Apr. 28, 1987
4635401 Duplex-head surface grinder Jan. 13, 1987
4604011 Method and apparatus for edge-planing sheet metal Aug. 5, 1986
4407095 Device for abrasive cleaning of blanks shaped as bodies of revolution Oct. 4, 1983
4277914 Apparatus for grinding articles with two rotating grinding discs Jul. 14, 1981
3986301 Apparatus for lapping the edges of a metal foil tape Oct. 19, 1976

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