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| Number | Title | Issue Date |
| 7367773 | Apparatus for combining or separating disk pairs simultaneously Various methods and apparatus are provided for merging and demerging pairs of disks. In one embodiment, pairs of merged disks are first separated and then transferred to separate cassettes such that all of the disks in the separate cassettes are oriented in the same... | 05/06/2008 |
| 7322098 | Method of simultaneous two-disk processing of single-sided magnetic recording disks Various methods and apparatus for simultaneously processing two single-sided hard memory disks is provided. Disks are positioned in pairs, with one surface of one disk positioned adjacent one surface of the second disk, with the disk surfaces touching or with a slig... | 01/29/2008 |
| 7255809 | Polishing slurry for texturing Polishing slurry for texturing the surface of a magnetic hard disk substrate has abrading particles with diameters in the range of 1-10 nm dispersed in a dispersant such as water and a water-based aqueous solution. The abrading particles may be monocrystalline diamo... | 08/14/2007 |
| 7217173 | Apparatus micro lapping with abrasive for polishing precision screw and polishing method thereof The present invention is an apparatus for polishing a precision screw. The apparatus uses abrasive in a sealed container for polishing. Hence, the present invention can do precise polishing to obtain smooth surface of thread by removing tiny burrs with the abrasive.... | 05/15/2007 |
| 7180709 | Information-storage media with dissimilar outer diameter and/or inner diameter chamfer designs on two sides A single-sided magnetic hard disk 200 is provided that includes opposing first and second sides 300 and 308 having opposing first and second chamfers 408 and 412, respectively. The first chamfer 408 is dissimilar (or differe... | 02/20/2007 |
| 7168153 | Method for manufacturing single-sided hard memory disks Various apparatus and methods are provided for positioning and handling single-sided hard memory disks. A disk carrier is provided with ribs formed on the inside surface of opposing side walls. The ribs form disk receiving grooves or channels. The ribs further compr... | 01/30/2007 |
| 7165308 | Dual disk transport mechanism processing two disks tilted toward each other Various apparatus and methods are provided for handling and transporting pairs of gap merge disks. A transfer member is provided in one embodiment which engages the outer perimeter of a pair of disks at three locations. The transfer member is configured to induce an... | 01/23/2007 |
| 7083502 | Method for simultaneous two-disk texturing Various methods and apparatus for simultaneously texturing two single-sided hard memory disks is provided. The two disks are placed in a concentric contact merge orientation such that the outwardly facing surface of each disk may be simultaneously subjected to textu... | 08/01/2006 |
| 7083871 | Single-sided sputtered magnetic recording disks An information-storage media is provided that includes: (a) a substrate disk 312 having first and second opposing surfaces; (b) a first selected layer 304 on the first surface, the first selected sele... | 08/01/2006 |
| 7083376 | Automated merge nest for pairs of magnetic storage disks Various methods and apparatus for handling a plurality of disks and repositioning them into pairs is provided. In one embodiment, a nest is configured to hold a cassette and includes a nest. The nest includes a curved surface with ribs or teeth extending therefrom w... | 08/01/2006 |
| 7070481 | Polishing method, polishing device, glass substrate for magnetic recording medium, and magnetic recording medium There are disclosed a polishing method and a polishing device in which cleaning of a glass substrate surface can be achieved to a high level. A glass substrate (MD substrate 1) in the shape of a circular disc having a circular hole in a center portion is poli... | 07/04/2006 |
| 7052739 | Method of lubricating multiple magnetic storage disks in close proximity Various apparatus and methods are provided for lubricating hard memory disks. A mandrel is provided in one embodiment with three rows of teeth and provides a stable, three-point engagement with the inside edge of the disks at the center aperture. When removing disks... | 05/30/2006 |
| 7029377 | Buffing head and method for reconditioning an optical disc A buffing head (34) includes a rotary element (36) for retaining an optical disc (20) and causing the disc (20) to rotate at a first speed. A buffing element (38) contacts a work surface (30) of the optical disc (20),... | 04/18/2006 |
| 7027246 | Method for servo pattern application on single-side processed disks in a merged state Methods and apparatus are provided for creating servo-tracks on the R-side of single-sided hard memory disks. The method includes placing two single-sided disks in a concentric contact merge orientation with the R-side of each disk facing outwardly. Two independent ... | 04/11/2006 |
| 6884154 | Method for apparatus for polishing outer peripheral chamfered part of wafer In a process for polishing the chamfered peripheral part of a wafer using a polishing cloth while supplying a polishing slurry in order to improve productivity of the process by reducing a polishing time, at least two steps of polishing processes are performed in se... | 04/26/2005 |
| 6811465 | Workpiece grinding method which achieves a constant stock removal rate In a method of grinding a component such as a cam, a reduction in the finish grinding time is achieved by rotating the component through only a single revolution during a final grinding step and controlling the depth of cut and the component speed of rotation during... | 11/02/2004 |
| 6663471 | Method of grinding half toroidal CVT disk A half toroidal CVT disk having an inner surface portion, an outer surface portion and a toroidal surface having a given machining allowance is centered with said inner surface portion worked prior to the heat treatment of said half toroidal CVT disk as t... | 12/16/2003 |
| 6616516 | Method and apparatus for asymmetric processing of front side and back side of semiconductor substrates An asymmetric double-sided substrate scrubber is provided. The asymmetric double-sided substrate scrubber includes a first roller and a second roller. The first roller is constructed from a first material having a first density and the second roller is co... | 09/09/2003 |
| 6461224 | Off-diameter method for preparing semiconductor wafers Methods for preparing semiconductor wafers are disclosed. A method includes rotating a semiconductor wafer in a vertical orientation, and the wafer having first and second opposing surfaces. The method further includes contacting each of the first and sec... | 10/08/2002 |
| 6450865 | Non-contact support for cylindrical machining A support for supporting a work piece to be machined is provided. The support is for use in a machine adapted to receive fluid from a fluid source. The machine includes a tool for removing material from the work piece. The support includes a body defining... | 09/17/2002 |
| 6368192 | Wafer preparation apparatus including variable height wafer drive assembly An apparatus for preparing a semiconductor wafer is provided. The apparatus includes a wafer drive assembly having a pair of wafer drive rollers for rotating a semiconductor wafer in a vertical orientation. The wafer drive assembly is configured such that... | 04/09/2002 |
| 6261160 | Method and apparatus for specular-polishing of work edges A polishing apparatus comprises a rotating table intermittently rotating through 120°0 increments; three polishing drums and three work-holding means 12 provided on the rotating table; a handling means for unloading a processed work from the work-holding... | 07/17/2001 |
| 6220927 | Lens grinding apparatus An eyeglass lens grinding apparatus is used for processing an eyeglass lens based on processing data obtained from target lens configuration data indicative of an eyeglass frame shape. In the eyeglass lens grinding apparatus, a lens is rotated while being... | 04/24/2001 |
| 6193591 | Loading system and collect assembly for grinding a workpiece An assembly for holding a cylindrical workpiece for grinding, including a support frame having at least one support arm extending to initially hold the workpiece and operable to disengage from the workpiece during grinding, a tailstock slidably mounted on... | 02/27/2001 |
| 5607348 | Disc brake grinding apparatus and method An apparatus for grinding a disc brake disc having opposite surfaces, the apparatus comprising: a free-standing support; a pair of rotors, at least one of which is a grinding rotor, the rotors attached to the support to extend in spaced relation at opposi... | 03/04/1997 |
| 5486134 | System and method for texturing magnetic data storage disks In the texturing unit of this invention a data storage disk is gripped between a pair of opposed, counter-rotating cylindrical abrasive mandrels, which are covered with soft, porous pads. The frictional force between the disk and the pads raises the edge ... | 01/23/1996 |
| 5484327 | Method and apparatus for simultaneously grinding a workpiece with first and second grinding wheels A method and apparatus for grinding a workpiece which is supported for rotation about a first axis with a first grinding wheel supported for rotation about a second axis and a second grinding wheel supported for rotation about a third axis. The first grin... | 01/16/1996 |
| 4964242 | Apparatus for texturing rigid-disks used in digital magnetic recording systems An apparatus for texturing the front and back surfaces of a rigid-disk substrate used in magnetic recording systems is disclosed. The apparatus comprises first and second mechanical assemblies; each of the assemblies including an abrasive tape, a load-bea... | 10/23/1990 |
| 4862645 | Chamfering machine In a chamfering machine wherein a round bar material is longitudinally conveyed in the lengthwise direction thereof and is brought into contact with a grind stone for chamfering to chamfer an end surface of the round bar material and the round bar materia... | 09/05/1989 |
| 4827751 | Device for machining rolls in a rolling stand A device for machining a plurality of rolls (4) which are mounted ready for use in a rolling stand (3) and form a common sizing pass (6) has at least one tool (5) which is disposed outside the sizing pass (6) for machining the working surfaces of the roll... | 05/09/1989 |
| 4767438 | Apparatus for cleaning material transporting rollers The roller cleaning apparatus of the present invention includes a frame which has a pair of caster mounted wheels located at one of its ends. The casters are connected to one another through a tie-rod which causes them to turn as a unit between a right-ha... | 08/30/1988 |
| 4697387 | Device for grinding tooth profiles of a rotating toothed workpiece Two simultaneously driven worm shaped globoidal tools of identical shape are radially adjustable towards the workpiece having tooth profiles. Their tooth thicknesses are smaller than the tooth gap widths of the finished tooth gaps on the workpiece. The wo... | 10/06/1987 |
| 4386483 | Method and apparatus for grinding convergent conical surfaces Two grinding-wheel spindles bearing grinding wheels are mounted on a table which undergoes an angular displacement for simultaneously grinding convergent internal and external conical surfaces of a workpiece, on the one hand, and for truing the grinding w... | 06/07/1983 |
| 4254588 | Method of controlling infeed in the compound grinding A method of controlling infeed in simultaneously grinding the inner and outer diameters of an annular workpiece with a multiple infeed speed. The method comprises, while supervising the amounts of infeed of the internal and external grind infeeding heads,... | 03/10/1981 |
| 4112625 | Device for grinding elongated cylindrical workpieces Method of grinding elongated, cylindrical workpieces in continuous operat in a grinding machine wherein the workpieces are advanced while they are rotated about their longitudinal axes includes exerting an oscillating grinding pressure transversely to th... | 09/12/1978 |
| 4052822 | Method and apparatus for abrasively cutting objects A unique method and apparatus for making a score cut on a metal object with a previously used abrasive cutting wheel, worn down from a new, larger diameter wheel to allow use of worn cutting wheels and to improve the ratio of cross-sectional area of metal... | 10/11/1977 |
| 4024596 | Apparatus for cleaning slices of material Both sides of thin slices of material are cleaned simultaneously in the apparatus of this invention. A slice of material rotates about its axis as it passes between opposed rotatable cleaning surfaces. The apparatus includes a stop which maintains the sli... | 05/24/1977 |
