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Class Information
Number: 451/24
Name: Abrading > Precision device or process - or with condition responsive control > With feeding of tool or work holder > Hydraulically driven
Description: Subject matter actuated by fluid pressure means.

Sub-classes under this class:

Class Number Class Name Patents
451/26 Control means near and parallel to the abrader 78
451/25 Sizing gauge controlled 43

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
7125477 Contacts for electrochemical processing Oct. 24, 2006
7074111 Surface preparation device and method Jul. 11, 2006
6976906 Apparatus for reducing compressed dry air usage during chemical mechanical planarization Dec. 20, 2005
6974362 System and method for automatically compensating for unbalanced resistance forces Dec. 13, 2005
6964599 Method and apparatus for holding or mounting an object Nov. 15, 2005
6949009 Rotating kiln tire refinishing machine Sep. 27, 2005
6926589 Chemical mechanical polishing apparatus and methods using a flexible pad and variable fluid flow for variable polishing Aug. 9, 2005
6905394 Apparatus and method for polishing row bars Jun. 14, 2005
6852002 Apparatus and methods for Z-axis control and collision detection and recovery for waterjet cutting systems Feb. 8, 2005
6712670 Method and apparatus for applying downward force on wafer during CMP Mar. 30, 2004
6709315 Auto feed system for compressed propellant tools and pressure compensating valve therefore Mar. 23, 2004
6685536 Method for grinding convex running faces and outside diameters on shaft-like workpieces in one set-up and grinding machine for carrying out the method Feb. 3, 2004
6669533 Rail profile grinding machine Dec. 30, 2003
6656024 Method and apparatus for reducing compressed dry air usage during chemical mechanical planarization Dec. 2, 2003
6648731 Polishing pad conditioning apparatus in chemical mechanical polishing apparatus Nov. 18, 2003
6638138 Arrangement of grinding modules with grinding tools in track grinders Oct. 28, 2003
6612904 Field controlled polishing apparatus Sep. 2, 2003
6607426 Polishing apparatus Aug. 19, 2003
6572446 Chemical mechanical polishing pad conditioning element with discrete points and compliant membrane Jun. 3, 2003
6540586 Apparatus and methods for collision detection and recovery for waterjet cutting systems Apr. 1, 2003
6533640 Ultra high pressure abrasive waterjet cutting apparatus Mar. 18, 2003
6390888 Grinder pressing device May. 21, 2002
6379214 Apparatus and methods for z-axis control and collision detection and recovery for waterjet cutting systems Apr. 30, 2002
6375542 Hydrostatic spindle unit with automatic self centering of the workpiece Apr. 23, 2002
RE37622 Wafer polishing method and apparatus Apr. 2, 2002
6358114 Method and apparatus for optical polishing Mar. 19, 2002
6358118 Field controlled polishing apparatus and method Mar. 19, 2002
6287170 Multipoint bending apparatus for lapping heads of a data storage device Sep. 11, 2001
6264534 Method and tooling for automated wet or dry sanding of a vehicle surface Jul. 24, 2001
6241578 Carrier device in polishing apparatus and method for controlling carrier device Jun. 5, 2001
6220931 Feeding a grinding wheel in grinding method Apr. 24, 2001
6217411 Polishing apparatus Apr. 17, 2001
6213850 Method and apparatus for producing a raw edge belt Apr. 10, 2001
6203401 Device for superfinishing treated surfaces Mar. 20, 2001
6196897 Automatic lapping method and a lapping apparatus using the same Mar. 6, 2001
6159071 Semiconductor wafer grinding apparatus Dec. 12, 2000
6152804 Grinding method and grinding apparatus Nov. 28, 2000
6146241 Apparatus for uniform chemical mechanical polishing by intermittent lifting and reversible rotation Nov. 14, 2000
6086452 Method of high speed centrifugal run-out grinding of a pneumatic tire Jul. 11, 2000
5961379 Tool grinding machine Oct. 5, 1999
5916009 Apparatus for applying an urging force to a wafer Jun. 29, 1999
5906535 Ball polishing method and apparatus, and annular groove forming method May. 25, 1999
5803794 Combined grinding machine for providing an internal spline Sep. 8, 1998
5782678 Dual column abrading machine Jul. 21, 1998
5679054 Apparatus for grinding the screen panel of a cathode ray tube Oct. 21, 1997
5558560 Tool grinding machine Sep. 24, 1996
5558558 Apparatus for retracting a tool slide of an ultrasonic cutting machine Sep. 24, 1996
5556322 Pneumatic mechanism for the application of uniform pressure to a mechanically adjustable spindle Sep. 17, 1996
5540613 Cutter apparatus Jul. 30, 1996
5525092 Device for preventing idle rotation in cylindrical ingot grinder Jun. 11, 1996

1 2 3

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