Class 451/274 - Work rotating

Subclass of Class 451 - Abrading
Definition: Abrading machine in which the work is rotated during reciprocation
No. of patents: 24
Last issue date: 03/20/2012

Number	Title	Issue Date
8137162	Semiconductor wafer polishing machine Embodiments of the invention comprise a machine adapted for polishing work pieces such as large silicon wafers. A wafer polishing machine in accord with the invention comprises a rotatable platen in a table base, above which is mounted a lid having a head moving ass...	03/20/2012
7413503	Elastic polishing tool and lens polishing method An elastic polishing tool that comes into contact with a surface to be polished of a lens and rotates to polish the surface, includes: an elastic polishing body which has a cylindrical shape and whose shape can be changed according to the surface to be polished; and...	08/19/2008
7097544	Chemical mechanical polishing system having multiple polishing stations and providing relative linear polishing motion An apparatus and associated methods for polishing semiconductor wafers and other workpieces that includes polishing surfaces located at multiple polishing stations. Multiple wafer heads, preferably at least one greater in number than the number of polishing stations...	08/29/2006
6575818	Apparatus and method for polishing multiple semiconductor wafers in parallel A chemical mechanical polishing (CMP) apparatus and method for polishing semiconductor wafers utilizes multiple wafer carriers to polish a corresponding number of semiconductor wafers on a single polishing pad in parallel. In one embodiment, the wafer car...	06/10/2003
6511368	Spherical drive assembly for chemical mechanical planarization The present invention provides an improved planarization or polishing apparatus for chemical mechanical planarization and other types of polishing such as metal polishing and optical polishing. In an exemplary embodiment, an apparatus for polishing an obj...	01/28/2003
6146250	Process for forming a semiconductor device Vibrating and oscillating rates can be dynamically changed during polishing to achieve an optimal polishing process. A semiconductor device substrate (34) has a first layer with a first film (12) and a second film (10) that overlies the first film (12), w...	11/14/2000
6139400	Polishing system and method with polishing pad pressure adjustment Disclosed is a polishing system used for polishing a surface to be polished of an object to be polished by a polishing pad, which is capable of improving uniformity of the surface to be polished of the object to be polished by positively, accurately adjus...	10/31/2000
6116987	Method of polishing hard disc and polishing apparatus therefor A method and apparatus for polishing hard discs uniformly while minimizing frictional electricity between the discs and polishing materials as well as preventing from frictionally heated deformation. A turntable for placing a disc thereon is freely rotata...	09/12/2000
6042459	Surface machining method and apparatus A wafer is rotated on its axis, which is biased with regard to an axis of a grinding wheel, and revolves around an axis which is biased with regard to the axis of the wafer and the axis of the grinding wheel. In this state, the grinding wheel is abutted a...	03/28/2000
5845630	Process and apparatus for fabricating a semiconductor wafer A process for fabricating a semiconductor wafer and an apparatus for chamfering a semiconductor ingot are provided to precisely perform the chamfering together and reduce significantly the cutting and chamfering time. The semiconductor ingot 2 is rotated ...	12/08/1998
5706568	Automated chamfering apparatus and method An apparatus for loading, chamfering and unloading a ceramic or ceramic/polymer substrate for electronic components. An automatic part loader moves substrates in a row as a unit, using a frangible pin to push the parts. The part loader separates the first...	01/13/1998
5364210	Machine tool A machine tool comprises a workpiece table that can rotate about a vertical axis. A first spray shielding panel is rigidly attached to the workpiece table substantially along one diameter thereof. It divides the workpiece table into a placement side and a...	11/15/1994
5035088	Machine tool A workpiece W to be machined by a rotating cutting tool 32 is carried by a rotary workhead 22 which is in turn mounted on a rotary table 16 for movement relative thereto both rotationally about a first axis perpendicular to the rotation axis of the table ...	07/30/1991
4916866	End mill sharpener An end mill resharpening device is provided which will resharpen the primary and secondary cutting edges of both the flutes and the end of the mill. All of the proper side and end angles, as well as an end "fish-tail" angle are produced automatically by t...	04/17/1990
4827994	Barrel shaver A wooden wine barrel has one end removed, and is supported by and rotated by power driven support wheels. A router type cutter head extends into the barrel on an inner end of an arm which is pivoted at its outer end so that the cutter head can follow the ...	05/09/1989
4638603	Device for sharpening single-flute countersinks A device for sharpening a single flute countersink in which a threaded shaft is mounted in an enlarged opening formed at the upper end portion of an upstanding post. One end of the threaded shaft mounts a countersink to-be-sharpened, while the other end h...	01/27/1987
4580367	Abrading apparatus Apparatus for grinding irregular surfaces of a workpiece includes a frame, a slide movable longitudinally on this frame, a shaft mounted for rotation on the slide and having a workholder mounted on it, a grinder adapted to contact the surface to be ground...	04/08/1986
4536993	Grinding machine A grinding machine comprising a tool mounting head which is movable vertically between a pair of guide columns on which guide surfaces are provided for guiding the head. A plurality of workpieces are mounted on corresponding holding jigs which are mounted...	08/27/1985
4535570	Machine for beveling An apparatus for machining the periphery of a work is provided with a grinding wheel, a holding mechanism for holding the work, and a moving mechanism for moving the holding mechanism toward or away from the wheel. A touch sensor for detecting the contact...	08/20/1985
4512109	Rolling gear apparatus for an involute tooth gear cutting machine A rolling gear apparatus for an involute tooth gear cutting machine that rests on an engine bed of the machine. A primary carriage is longitudinally movable in both directions on the engine bed and carries at its top a secondary carriage that is guided in...	04/23/1985
4481742	Machine tool elevating and guiding apparatus A machine tool elevating and guiding apparatus comprising a tool mounting head which is movable vertically between a pair of guide columns. Guide surfaces on the guide columns are positioned closely adjacent to guided surfaces on the tool mounting head an...	11/13/1984
4331452	Apparatus for crystal shaping In the present invention, a length of elongated single crystal ingot is mounted adjacent its ends and is ground while being rotated to provide a cylindrical shape. While still mounted, the crystal is rotated into a position to be x-rayed for the grinding ...	05/25/1982
4322917	Double-head automatic grinding machine A double-head automatic grinding machine which comprises a machine base, a work table supported on the base for movement in the longitudinal direction of the base and supporting a main shaft support block and an opposing tail stock for pinching a workpiec...	04/06/1982
4287687	Variable work holding device for grinding gemstones This invention is that of a variable work holding device to be used for the grinding of various gemstones and industrial diamonds. The design and structure of the device provides that the device may be set up to operate in five different modes and provide...	09/08/1981

PatentStorm

Celebrity Inventors

PatentStorm News

Class 451/274 - Work rotating