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Class Information
Number: 451/231
Name: Abrading > Machine > Rotary tool > Rotary cylinder > Stationary work holder
Description: Abrading machine in which the workpiece is supported by a member which does not move during the abrading.










Sub-classes under this class:

Class Number Class Name Patents
451/234 Blade sharpener 41
451/235 Harvester knife 1
451/232 Reversing, obverting, or pivoting 22
451/233 Spaced portions 8


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8597083 Blade sharpening system for multiple blade shapes Dec. 3, 2013
8550883 Abrasion apparatus Oct. 8, 2013
8517797 Grinding machine and grinding method Aug. 27, 2013
8360828 Cutting tool Jan. 29, 2013
7563154 Grinding apparatus having sludge-removing device and method of removing sludge Jul. 21, 2009
7559828 Double-grinding-wheel type drill bit grinding device with a single driving shaft and grinding method thereof Jul. 14, 2009
7488241 Precision control of sharpening angles Feb. 10, 2009
7473163 Cutter grinding device Jan. 6, 2009
7322876 Apparatus for preparing a tire surface for application of a patch Jan. 29, 2008
7273406 Glass treatment system and method Sep. 25, 2007
7252579 Apparatus and process for cylindrically grinding workpieces Aug. 7, 2007
7172498 Drill sharpener Feb. 6, 2007
7147546 Tool holder with moveable alignment finger Dec. 12, 2006
7121932 Portable drill sharpener Oct. 17, 2006
7052379 Methods and apparatus for machining a coupling May. 30, 2006
7044843 Sander device having vacuuming structure May. 16, 2006
6971949 Sharpening guide for dental tools Dec. 6, 2005
6827631 Center support grinding method, center support grinding machine, and centering method for the centers thereof Dec. 7, 2004
6796886 Apparatus for grinding rigid materials Sep. 28, 2004
6783444 Tool for machining surfaces in bores Aug. 31, 2004
6735805 Universal bolt cleaning attachment May. 18, 2004
6676494 Drill bit grinder structure Jan. 13, 2004
6652367 Drill bit grinding device Nov. 25, 2003
6520842 Method of forming tooth grooves Feb. 18, 2003
6443819 Device for dressing grinding wheels Sep. 3, 2002
6428402 Glass machining apparatus Aug. 6, 2002
6422931 Fixture apparatus and system Jul. 23, 2002
6390900 Finishing tool for CNC router machines May. 21, 2002
6273785 Non-contact support for cyclindrical machining Aug. 14, 2001
6241590 External abrasive machine Jun. 5, 2001
6200205 Lapping tool Mar. 13, 2001
6190242 Universal grinding machine Feb. 20, 2001
6068543 Miniature all-purpose tool May. 30, 2000
5951376 Procedure of and device for processing optical lenses Sep. 14, 1999
5873773 Glass-plate working apparatus Feb. 23, 1999
5674110 Machine and a process for sizing and squaring slabs of materials such as a glass, stone and marble, ceramic tile and the like Oct. 7, 1997
5628677 Apparatus for machining glass May. 13, 1997
5620363 Powered grinding tool Apr. 15, 1997
5618226 Apparatus for grinding a reciprocal trimming blade Apr. 8, 1997
5586929 Precision cut off machine Dec. 24, 1996
5361544 Apparatus and method for grinding, polishing and burnishing operations on a stationary workpiece to relieve internal stresses or preclude material flow in the workpiece during operations there Nov. 8, 1994
5318005 Apparatus for cutting plate-shaped workpieces and for edge processing thereof Jun. 7, 1994
5099617 Method and apparatus for bevelling interior angles of sheets of colored or non-colored plain glass, plate glass or flattened glass, and the product obtained Mar. 31, 1992
4984392 Chamfering the notch of a semiconductor wafer Jan. 15, 1991
4833831 Apparatus and method for sizing and finishing fixed jaw openings of open-ended wrenches May. 30, 1989
4648209 Small-sized drill grinding machine Mar. 10, 1987
4640007 Apparatus and method for replacing bearings in a walking beam in trucks and trailers having tandem axles Feb. 3, 1987
4551948 Glass shaping machine Nov. 12, 1985
4516357 Coolant supply apparatus for a grinding tool May. 14, 1985
4507895 Radially adjustable internal grinder Apr. 2, 1985

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