Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7758404 | Apparatus for cleaning edge of substrate and method for using the same An apparatus, system and method for cleaning a substrate edge include a composite applicator that cleans bevel polymers deposited on wafer edges using frictional contact in the presence of fluids. The composite applicator includes a support material and a plurality ... | 07/20/2010 |
| 7753762 | Optical disc destruction device A device for removing an information-bearing layer of an optical disc comprises a housing defining a first chamber and a second chamber, a mount to selectively mount an optical disc having an information-bearing layer adjacent the first chamber, a cutter within the ... | 07/13/2010 |
| 7402093 | Grinding apparatus for buttons on rock drill bit The present invention relates to grinding apparatus for grinding the hard metal inserts of rock drill bits, said grinding apparatus having a grinding machine carried on an support system that provides a feed pressure for said grinding machine during grinding, said g... | 07/22/2008 |
| 7303463 | Semiconductor wafer polishing apparatus, and method of polishing semiconductor wafer Aimed at thoroughly preventing abrasive and dusts from adhering onto the circuit-forming region of a wafer, improving yield ratio of semiconductor devices, and thereby improving operation rates of the individual manufacturing apparatuses in the succeeding stage, a s... | 12/04/2007 |
| 7275481 | Printer A printer of the present invention includes a timing belt passed over drive pulleys, each of which is mounted on a particular print drum, via phase adjusting means and deflection pulleys or rotary members. The deflection pulleys are rotatable in contact with the rea... | 10/02/2007 |
| 7247081 | Precision machining apparatus and precision machining method A precision machining apparatus and a precision machining method capable of carrying out grinding with accuracy by performing switching control, for example, on a device for rotating a grinding wheel according to grinding stages through the amount of movement and co... | 07/24/2007 |
| 7226340 | Grinding machine The grinding machine (10) according to the invention serves in particular for the machining or production of tools. It comprises a machine bed 11 and a workpiece spindle (14) arranged thereon, which receives the workpiece (13) to be machi... | 06/05/2007 |
| 7226344 | Method of processing antifriction bearing unit for wheel A method of processing an antifriction bearing unit for a wheel, the antifriction bearing unit including an outer race, an inner race, a plurality of rolling elements and a flange portion for directly or indirectly mounting a brake disk provided to one of the outer ... | 06/05/2007 |
| 7172494 | Crankshaft and camshaft grinder An apparatus for grinding a surface of a nonstraight elongated workpiece has a frame, drives on the frame for rotating the workpiece about a longitudinal workpiece axis, and a guide defining a pivot axis offset from the workpiece axis on the frame. A hanging arm has... | 02/06/2007 |
| 7125312 | Rotor-grinding machine comprising a rotary head with two grinding wheels The invention relates to a machine (1) for grinding the blades of a turbine rotor (2) or a compressor. The inventive machine consists of a rotary head (6) which is provided with two different grinding wheels (7, 7′) for grinding the rot... | 10/24/2006 |
| 7108589 | Polishing apparatus and method A polishing apparatus and method has a function of polishing a surface of a film formed on a substrate to a flat mirror finish and a function of polishing unnecessary metal film such as copper film deposited on an outer peripheral portion of the substrate to remove ... | 09/19/2006 |
| 7101269 | Cylindrical grinding machine Disclosed is a cylindrical grinding machine of the type that a workpiece support device composed of a work head and a foot stock is mounted on a forward upper portion of a bed while a wheel head unit composed of a slide base and a wheel head is mounted on a rear upp... | 09/05/2006 |
| 7052379 | Methods and apparatus for machining a coupling A method facilitates fabricating a coupling including a first annular coupling member and a second annular coupling member. The method comprises coupling the first coupling member to a machine assembly that includes a plurality of grinding wheels coupled to a tool s... | 05/30/2006 |
| 7008294 | Method and device for grinding a rotating roller using an elastic steady-rest support The invention relates to a device for grinding rollers, also for grinding hollow rollers. As the rollers tend to vibrate transversally as a result of the contact with the grinding disc, a cushioned body is applied to the opposite side of the roller from the grinding... | 03/07/2006 |
| 6979253 | Work drive for continuous generation gear grinding machine The gear train of a work drive system on a machine for the continuous grinding of gears, with which by means of non-integer transmission ratio between work spindle (3) and drive motor (4) as well as a high number of teeth on the cylindrical gear (6 | 12/27/2005 |
| 6926591 | Multi-purpose machine The invention concerns a method and an apparatus in which crankshafts and similar components can be machined at the relevant machining locations (big-end bearing locations, main bearing locations, side cheek side surfaces, end journal/end flange) on one machine and ... | 08/09/2005 |
| 6887140 | Machine for radiusing the corners of glass sheets A machine for radiusing the corners of glass sheets (K) by tools (A, B, C) operated by an electric motor (33), in which the electric motor (33) is supported vertically movable by a first support structure (34), which is supported rotatable about... | 05/03/2005 |
| 6869343 | Turning tool for grooving polishing pad, apparatus and method of producing polishing pad using the tool, and polishing pad produced by using the tool Disclosed is a turning tool for cutting circumferential grooves into a surface of a polishing pad formed of a resin material and utilized for polishing semiconductor devices. The turning tool comprising a cutting part arranged to have a tooth width within a range of... | 03/22/2005 |
| 6840722 | Machining apparatus and machining method A machining apparatus for machining a workpiece by rotating and revolving either the workpiece or a tool 1 to contact with each other. The machining apparatus comprises rotation/revolution ratio setting motors M1 and M3 for setting a ratio of a ... | 01/11/2005 |
| 6827631 | Center support grinding method, center support grinding machine, and centering method for the centers thereof To provide a grinding machine and a centering method for the centers thereof in which the requisite space for the center support rotating mechanism for a workpiece and the in-feed mechanism is reduced to facilitate miniaturization and in which it is easy to secure t... | 12/07/2004 |
| 6773334 | Dust collection and removal system A dust collection and removal system for use in conjunction with a tire uniformity machine includes a grinding wheel shroud having a vacuum aperture therein. The vacuum aperture is connected to a vacuum source. An air nozzle is centrally mounted in the vacuum apertu... | 08/10/2004 |
| 6722964 | Polishing apparatus and method A polishing apparatus and method has a function of polishing a surface of a film formed on a substrate to a flat mirror finish and a function of polishing unnecessary metal film such as copper film deposited on an outer peripheral portion of the substrate to remove ... | 04/20/2004 |
| 6702649 | Method of determining current position data of a machining tool and apparatus therefor The current positioning data of a machining tool with regard to a reference surface of a workpiece or of a body connected to the workpiece, is determined. The tool and the workpiece to be machined are relatively moveable toward and away from one another, ... | 03/09/2004 |
| 6648727 | CNC dual workhead chucker grinder A grinding machine has an abrasive wheel mounted on a spindle carried by a wheelhead which provides for movement in a direction perpendicular to the spindle. A pair of workheads are separately mounted on workslides and cross slides so that the workheads m... | 11/18/2003 |
| 6419562 | Method and apparatus for sharpening drill bits This invention results from the realization that a drill bit can be positioned for sharpening without using the flawed tip as a reference point allowing the drill bit to be sharpened with an insignificant level of human judgment and with consistently less... | 07/16/2002 |
| 6358123 | Apparatus and method for reducing disc surface asperities to sub-microinch height A honing head for microburnishing surface of a recording/reproducing disc to a smoothness at which asperities are limited to submicron heights including a hardened contact bearing surface having an array of depressions with abrupt trailing edges interconn... | 03/19/2002 |
| 6319100 | Disk edge polishing machine and disk edge polishing system The disk edge polishing machine is capable of polishing an inner edge of a center hole of a disk and an outer edge thereof. In the disk edge polishing machine, a sucking member has a cylindrical end section. The sucking member sucks the disk by the cylind... | 11/20/2001 |
| 6287176 | Grinding disk with peripheral groove A grinding disk (20) has a a peripheral groove for grinding the edges of glass panes (11), whereby a cooling liquid is fed to the point of grinding (18). When the disk (20) is in a mounted position, a lateral stop surface (8) fits closely against the oppo... | 09/11/2001 |
| 6200200 | Method and device for non-circular grinding of cam shapes with concave flanks A method and an apparatus are proposed for grinding cams having concave flanks on a camshaft, using a grinding wheel of relatively small diameter, which is used at least for finish-grinding. The axis of the grinding wheel runs at an angle to the camshaft ... | 03/13/2001 |
| 6196902 | Apparatus for finishing the edge of a sheet of glass An apparatus for finishing the edge of a sheet of glass, which includes a supporting structure with a support base, a stationary vertical structure coupled on the support base, and, an upper supporting arm located in a horizontal position on the vertical ... | 03/06/2001 |
| 6190242 | Universal grinding machine A universal grinding machine having a plurality of workpiece holders, each of which can be moved independently of each other or jointly, by a separate slide, in the longitudinal direction of the workpiece on a slide guide disposed on the machine bed, or w... | 02/20/2001 |
| 6142854 | Deburring system and method for using same A deburring head is mounted on a frame for movement toward and away from a workpiece also mounted on the frame. The deburring head includes a plurality of deburring brushes which are rotated and which are adapted to engage the workpiece and remove burrs f... | 11/07/2000 |
| 6126522 | Method for manufacturing golf ball A method for manufacturing a golf ball, wherein a grinding tool and a ball to be ground are rotated so that their adjacent points move toward opposite directions. A grinding face of the grinding tool is arranged to be Japanese Industrial Standard grain si... | 10/03/2000 |
| 6120355 | Method and apparatus for lapping gears A machine for lapping or testing gears comprising a single machine column having a first side oriented perpendicular to a second side with the first side having a first workpiece spindle rotatable about a first axis and the second spindle having a second ... | 09/19/2000 |
| 6110022 | Device for obtaining safety stamps applicable to paper or other laminar elements Device for obtaining safety stamps applicable to paper or other laminar elements. Said device comprises a supporting cylinder (a) for paper (3) fitted with reliefs (5) separated from an abrasive periphery (2') wheel (b) along a distance that is shorter th... | 08/29/2000 |
| 6106373 | Multi-task grinding wheel machine This application relates to a grinding machine which is capable of performing two controlled grinding operations simultaneously on a rotating workpiece.... | 08/22/2000 |
| 6039636 | Precision grinding of a part-spherical recess An apparatus for precision machining a part-spherical recess of a workpiece has a workpiece holder adapted to hold the workpiece which is rotated thereby about a symmetry axis of the recess and a honing tool which is rotated about a tool axis inclined to ... | 03/21/2000 |
| 6015336 | Grinding apparatus A grinding apparatus according to the present invention grinds a work having a plurality of non-circular work faces to be worked with a grindstone driven by a motor. The work faces are disposed at intervals. Distances between a grindstone unit, bearings a... | 01/18/2000 |
| 6001001 | Apparatus and method for chemical mechanical polishing of a wafer In a polishing configuration wherein a polishing material or slurry is applied to a surface of a rotating polishing pad and a product material mounted on a rotating carrier is moved into contact with the polishing material or slurry, the flow of the polis... | 12/14/1999 |
| 5971836 | Grinding machine A grinding machine comprises a grinding member having a thickness greater than 10 mm and an outer contact surface extending in a thickness direction of the grinding member for contacting a surface of a workpiece. The grinding member is supported by a firs... | 10/26/1999 |
