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| Number | Title | Issue Date |
| 7329173 | Tool grinding machine A grinding machine, which includes a grinding wheel rotatable by a motor, a first slide movable in X-axis direction, a second slide supported on the first slide and movable in Y-direction, a bracket supported on the second slide and turnable about Y-axis, a tool hol... | 02/12/2008 |
| 7220170 | Blade sharpening machines The invention concerns a blade sharpening machine that can be driven either by manual or automatic control. The blade sharpening machine possess two rotating grinding wheels and a mechanism for supporting the blade to be sharpened so that said blade can be sharpened... | 05/22/2007 |
| 6991524 | Method and apparatus for reconditioning digital discs Apparatus and method for reconditioning the protective coating of a digital disc. The damaged digital disc is automatically moved between workstations by a suction member which grasps the disc at the first workstation and releases the disc at the second workstation.... | 01/31/2006 |
| 6945847 | Method of lapping medium-opposing surface in thin-film magnetic head A thin-film magnetic head is formed on a support and is provided with a reproducing head part, a recording head part, and a heater for generating heat upon energization. A medium-opposing surface S of the magnetic head is polished while energizing the heater or reco... | 09/20/2005 |
| 6872123 | Method of and apparatus for lapping magnetic head slider The apparatus for lapping a magnetic head slider includes a lapping plate to which a bar of the magnetic head slider makes a contact by a predetermined lapping pressure, a primary oscillating mechanism that makes a primary oscillating of the bar in a radial directio... | 03/29/2005 |
| 6758725 | Lapping method and lapping apparatus A lapping method includes a step of moving a substantially bar-shaped workpiece in a radial direction of a surface of a rotary lapping plate while simultaneously oscillating the workpiece pivotally about a central point in a longitudinal direction of the workpiece i... | 07/06/2004 |
| 6679760 | Lapping method of magnetic head slider and lapping method of bar A lapping method of a magnetic head slider provided with an element-forming surface, an ABS and an MR element formed on the element-forming surface, including a step of setting the magnetic head slider to be lapped on a lapping means, and a step of lappin... | 01/20/2004 |
| 6604989 | Manufacturing method and apparatus for magnetic head sliders Disclosed herein is a method including the steps of cutting a wafer to prepare a row block having a plurality of head elements arranged in a matrix, bonding a plate member to one side surface of the row block, bonding a row tool to another side surface of... | 08/12/2003 |
| 6375539 | Lapping machine, lapping method, and row tool A lapping machine for lapping a row bar includes a lap plate for providing a lapping surface, a row tool having a plurality of bend cells formed by defining a plurality of slits, a pressure mechanism for pressing the row tool toward the lapping surface of... | 04/23/2002 |
| 6068545 | Workpiece surface processing apparatus A workpiece surface processing apparatus capable of processing the surface of a workpiece without being limited as to the shape of the workpiece and further capable of measuring the state of polish of the workpiece with a high precision. The workpiece sur... | 05/30/2000 |
| 5908530 | Apparatus for chemical mechanical polishing An apparatus for polishing wafers, preferably by chemical mechanical polishing. The apparatus includes a table defining a planar polishing surface adapted to contain a polishing medium and a wafer carrier assembly adapted to hold a wafer against the polis... | 06/01/1999 |
| 5882156 | Method and apparatus for milling a segment of a spherical surface A method and apparatus for machining the surface of a spherical segment, the surface being either convex or concave, by a circular milling cutter mounted on a milling machine and rotatably driven about an axis of rotation. The segment is carried by a fixt... | 03/16/1999 |
| 5816899 | Micro precise polishing apparatus Apparatus and method for grinding semiconductor chips and other specimens prior to microscopic examination thereof by supporting a specimen on a specimen mount, fixing the specimen mount to a lower end of a lower arm, connecting an upper end of the lower ... | 10/06/1998 |
| 5749769 | Lapping process using micro-advancement for optimizing flatness of a magnetic head air bearing surface A lapping method and device for lapping magnetic heads to provide an air bearing surface with improved surface quality including increased smoothness, reduced rolloff, and reduced recession. The lapping machine includes a lapping plate having a grinding s... | 05/12/1998 |
| 5603156 | Lapping process for minimizing shorts and element recession at magnetic head air bearing surface A method of lapping the air bearing surface of a magnetoresistive head which minimizes the likelihood of interelement shorts at the air bearing surface is described. In a final, linear lapping phase, the air bearing surface is lapped back and forth parall... | 02/18/1997 |
| 5562530 | Pulsed-force chemical mechanical polishing A pulsed-force CMP scheme allows for the down force holding a wafer onto a pad to cycle periodically between minimum and maximum values. When the force is near its minimum value, slurry flows into the space between the wafer and the pad. When the force is... | 10/08/1996 |
| 5165205 | Device for vibrating materials to be ground A device for vibrating a workpiece to be processed, serves as a workpiece table to be used to processing the workpiece by means of a rotating tool having a grindstone. The device comprises a table for supporting the workpiece and a base to be detachably f... | 11/24/1992 |
| 5140782 | Tool and method for forming a lens Lens for eye glasses are formed by a method in which a lens is selected having a finished front face and a rear face to be finished to provide a required curvature. The rear face is firstly cut on a Generator machine and is then polished on a cylinder mac... | 08/25/1992 |
| 4885873 | Abrading apparatus for spherically shaping workpieces In this invention, the jig board fixing axis inserted in the eccentricity hole of the rotation axis rocks at rotation radius r without the rotation of the axis, the jig board set on the rocking jig board fixing axis is co-moved on through the spherical ax... | 12/12/1989 |
| 4881518 | Apparatus for manufacturing and handling thin wafers Apparatus for manufacturing thin wafers from bars, such as in the manufacture of wafers for use as semiconductor substrates, include an arrangement wherein a holder member is fastened to the bar, the bar is sliced to separate a disc-shaped wafer therefrom... | 11/21/1989 |
| 4246727 | Fixture for use in grinding and polishing table facets of gems A fixture is described for aiding the grinding and polishing of a facetted gem, the fixture to be pivotably mounted to a vertical stand at one side of a rotary-driven grinding and polishing disc. The fixture comprises upper and lower supporting arms to ov... | 01/27/1981 |
| 4010574 | Apparatus for contouring magnetic head surfaces and method therefor A spherical wasp-waist shaped contour is formed on the surface of a magnetic head by rotating a lap plate against a single contact point on the head surface at a time. An arc along the head's length is defined by a fixed longitudinal radius. For each incr... | 03/08/1977 |
