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Class Information
Number: 451/190
Name: Abrading > Machine > Rotary tool > Rotary cylinder > One-way work traverse > Opposed abrading tools
Description: Abrading machine in which a plurality of grinding tools are located on opposite or different sides of the workpiece and simultaneously or successively treat such opposite or different sides thereof.










Sub-classes under this class:

Class Number Class Name Patents
451/192 Blade sharpener 21
451/191 Razor blade 3


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8690640 Complex geographical edge polishing Apr. 8, 2014
8657651 Apparatus for grinding a continuously cast workpiece Feb. 25, 2014
8574031 Method of and apparatus for grinding cylindrical and curved surfaces Nov. 5, 2013
8414358 Corner bevelling assembly for bevelling corners of glass sheets Apr. 9, 2013
8408971 Grinding assembly for bevelling corners of glass sheets Apr. 2, 2013
8376811 Method for the double sided polishing of a semiconductor wafer Feb. 19, 2013
8100740 Corner saw Jan. 24, 2012
8075371 Centerless grinder with servo motor Dec. 13, 2011
7771249 Corner saw Aug. 10, 2010
7632171 Grinding machine Dec. 15, 2009
7628677 Automated insulation milling machine Dec. 8, 2009
7270592 Milling machine Sep. 18, 2007
7226338 Milling machine Jun. 5, 2007
7179155 Device for grinding liquid crystal display panel Feb. 20, 2007
7029366 Method and apparatus for abrasive circular machining Apr. 18, 2006
7021990 Method and apparatus for circular grinding Apr. 4, 2006
RE39018 High speed method of aligning cutting lines of a workplace using patterns Mar. 21, 2006
7001249 Methods and systems for finishing edges of glass sheets Feb. 21, 2006
6997783 Method of and apparatus for removing a film layer on a glass plate and glass-plate working apparatus having the apparatus Feb. 14, 2006
6988938 Method and apparatus for removing coatings applied to surfaces of a substrate Jan. 24, 2006
6971948 Method and apparatus for removing coatings applied to surfaces of a substrate Dec. 6, 2005
6916233 Polishing and cleaning compound device Jul. 12, 2005
6881133 Method of grinding for a vertical type of double disc surface grinding machine for a brake disc Apr. 19, 2005
6826986 Bi-directional singulation system and method Dec. 7, 2004
6814653 Device for peeling or shaping products Nov. 9, 2004
6811473 Process for machining a wafer-like workpiece Nov. 2, 2004
6796882 Applique film and paint treatment removal tool Sep. 28, 2004
6755724 Device for grinding liquid crystal display panel Jun. 29, 2004
6743083 Method of and apparatus for removing a film layer on a glass plate and glass-plate working apparatus having the apparatus Jun. 1, 2004
6729948 Method and apparatus for rectifying cylindrical articles, in particular nuclear fuel pellets May. 4, 2004
6666246 Automated planer machine Dec. 23, 2003
6544105 Control device to implement a grinding process for a knife shaft Apr. 8, 2003
6416382 Bilateral automatic machine for edge-machining plates of glass, stone-like materials and the like Jul. 9, 2002
6322428 Working device and working method for magnet member Nov. 27, 2001
6296029 Centering sectional shoe assembly Oct. 2, 2001
6277006 Coated media bearing surface for conveying abrasive media and the like Aug. 21, 2001
6277007 Coated media bearing surface for conveying abrasive media and the like Aug. 21, 2001
6231429 Process for edging of glass blanks through simultaneous machining of plural edges May. 15, 2001
6227953 Apparatus for removing burr by multiple-stage grinding machine May. 8, 2001
6206763 Deburring machine Mar. 27, 2001
6142138 High speed method of aligning cutting lines of a workpiece using patterns Nov. 7, 2000
5993301 Apparatus to clean golden plates Nov. 30, 1999
5888123 Automatic golf club grinder Mar. 30, 1999
5755615 Lapping apparatus May. 26, 1998
5716262 Marking apparatus for marking painted surface Feb. 10, 1998
5700179 Method of manufacturing semiconductor wafers and process of and apparatus for grinding used for the same method of manufacture Dec. 23, 1997
5613898 Device for producing inclined surfaces and grooves on friction pads Mar. 25, 1997
5558559 Polishing system for opposite edge faces of plated steel strip Sep. 24, 1996
5484327 Method and apparatus for simultaneously grinding a workpiece with first and second grinding wheels Jan. 16, 1996
5464363 Polishing stack for thermoplastic films or sheets Nov. 7, 1995

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