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An armor with rollers is provided that enables a user to move in all positions by rolling on a hard and smooth surface while constantly varying his bearing points on the ground.
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| Number | Title | Issue Date |
| 7415978 | Assembly and a method for cutting or forming an object A method and an apparatus 10 for cutting an object 64, such as a grinding wheel. Particularly, the object 64 is placed in a horizontal manner and concomitantly rotated with the cutter 14 during the entire cutting operation. The rotation o... | 08/26/2008 |
| 7335091 | 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... | 02/26/2008 |
| 7331845 | Double end face truing device, double end face truing tool, and double end face truing method First and second end surface truing sections are formed by protruding cylindrical first and second base bodies from opposite end surfaces of a disc-like base of an opposite end surface truing tool in the axial direction thereof and by providing on the external surfa... | 02/19/2008 |
| 7300043 | Rotating positioning vise A rotating positioning vise for use in hand working operations. The positioning mechanism utilizes a permanent magnet that is lifted off the surface of a turntable by the means of a lever. The user pushes on the lever, moves the vise in the position desired and then... | 11/27/2007 |
| 7189149 | Method of truing chamfering grindstone and chamfering device A truing method for a chamfering grindstone for performing chamfering work on a peripheral edge of a plate-shaped object, comprising the steps of: performing chamfering work on a truing grindstone with a master grindstone having a desired groove shape and forming a ... | 03/13/2007 |
| 7175510 | Method and apparatus for conditioning a polishing pad A method and apparatus for polishing a thin film on a semiconductor substrate is described. A polishing pad is rotated and a wafer to be polished is placed on the rotating polishing pad. The polishing pad has grooves that channels slurry between the wafer and polish... | 02/13/2007 |
| 7118459 | Dressing tool for profiling the tip area of a threaded grinding wheel A dressing tool for profiling the tip area of a threaded grinding wheel used for continuous generation grinding. Concave working faces (13) are arranged in a cylindrical surface of the dressing tool (7) and coated with an abrasive coating. The pitch (P... | 10/10/2006 |
| 7101264 | Dressing wheel system An apparatus for providing a flat to stepped convex facing for grinding wheels used for the finished machining of parts, the apparatus including dressing wheels located only at the outer diameter of the Cubic-Boron-Nitride wheels to be dressed. ... | 09/05/2006 |
| 7097542 | Method and apparatus for conditioning a polishing pad A method and apparatus for polishing a thin film on a semiconductor substrate is described. A polishing pad is rotated and a wafer to be polished is placed on the rotating polishing pad. The polishing pad has grooves that channels slurry between the wafer and polish... | 08/29/2006 |
| 7083500 | Method and device for grinding the outside and inside of a rotationally symmetric machine part comprising a longitudinal borehole A machine part with a conical effective surface, which is machined by means of a device comprising a machine bed, a longitudinally movable grinding bench, and a workpiece spindle head that clamps the machine part by means of clamping jaws via a chuck. The conical ef... | 08/01/2006 |
| 6981909 | Method for conditioning superabrasive tools A method for conditioning a superabrasive grinding tool having a cutting surface includes truing the grinding tool by moving the cutting surface against a truing device to shape the cutting surface into a preselected profile, and subsequently moving the cutting surf... | 01/03/2006 |
| 6921322 | Apparatus and methods for refinishing a surface in-situ The invention features a self-contained, portable apparatus for performing precision grinding operations on metal disks of up to, e.g., 54 inches in diameter. The apparatus can be attached to the surface of the disk to be refinished and is leveled using special prec... | 07/26/2005 |
| 6884151 | Method and apparatus for forming grooves on a workpiece and for dressing a grindstone used in the groove formation A grinding apparatus for grinding a spline ball groove on a workpiece comprises a rod-shaped grindstone, having a distal end portion with a curved surface corresponding to the groove to be ground, and a spindle mechanism for rotating the grindstone. The spindle mech... | 04/26/2005 |
| 6869342 | Dressing of grinding tools for gear grinding A dressing apparatus (20) attached to a dressing pedestal (25) of a tooth flank grinding machine is maneuverable by means of an advancer device (27) from a dust proof position of rest aside of the dressing position into an optimum dressing posit... | 03/22/2005 |
| 6827071 | Wheel dresser for grinding wheel A dresser wheel mounted on the column of a grinder is presented. The dresser has an x-axis adjustment for positioning the diamond tool along the x-axis and a y-axis adjustment mechanism attached to the x-axis adjustment mechanism for positioning the diamond tool alo... | 12/07/2004 |
| 6827072 | Dressing wheel and method of making same A dressing wheel has a disk-shaped base body centered on an axis and formed with an annular groove also centered on the axis and having an inner surface. A multiplicity of abrasive elements distributed along the groove are in direct contact with the groove inner sur... | 12/07/2004 |
| 6807960 | Tool for dressing pulpstones A burr is provided for dressing a grinding tool, such as the grinding surface of a pulpstone grinding tool used for mechanical preparation of wood pulp. The burr includes a cylindrical body portion, a plurality of teeth disposed on and protruding outward from the ou... | 10/26/2004 |
| 6783428 | Method for forming grooves on workpiece and for dressing a grindstone used in the groove formation A grinding apparatus for grinding a spline ball groove on a workpiece comprises a rod-shaped grindstone, having a distal end portion with a curved surface corresponding to the groove to be ground, and a spindle mechanism for rotating the grindstone. The spindle mech... | 08/31/2004 |
| 6699105 | Method and apparatus for cutting and grinding single crystal SiC The present invention comprises a metal bond grind stone having a flat plate portion 10a and a tapered portion 10b; an electrode 13 opposed to the metal bond grind stone with a gap therebetween; voltage applying means 12 for applying a direct-current puls... | 03/02/2004 |
| 6572442 | Method and apparatus for forming grooves on a workpiece and for dressing a grindstone used in the groove formation A grinding apparatus for grinding a spline ball groove on a workpiece comprises a rod-shaped grindstone, having a distal end portion with a curved surface corresponding to the groove to be ground, and a spindle mechanism for rotating the grindstone. The s... | 06/03/2003 |
| 6551177 | Forming device for bevelling A forming device (100) for bevelling includes a base (102), a rail (104), a workbench (106) and a bar (108). A pair of support arms (114) extends upwardly from the base. An axle (120) is received in pivot holes (118) defined in the support arms. One end o... | 04/22/2003 |
| 6537139 | Apparatus and method for ELID grinding a large-diameter workpiece to produce a mirror surface finish A flat workpiece 5 (silicon wafer) is driven so as to rotate in horizontal by a workpiece driving device 12. A cylindrical conducting grindstone 14 is provided, the outer periphery of which is in contact with the surface of the workpiece. A grindstone rot... | 03/25/2003 |
| 6361410 | Grinding apparatus for forming grooves on a workpiece and a method for dressing a grindstone used in the apparatus A grinding apparatus for grinding a spline ball groove on a workpiece comprises a rod-shaped grindstone, having a distal end portion with a curved surface corresponding to the groove to be ground, and a spindle mechanism for rotating the grindstone. The s... | 03/26/2002 |
| 6332833 | Method for fabricating silicon semiconductor discrete wafer A method of fabricating a silicon semiconductor discrete wafer while dressing the grinding wheel is disclosed that assures excellent finishing accuracy and productivity. The dressing of the grinding wheel includes mixing air and grinding water from a surf... | 12/25/2001 |
| 6176762 | Method of cutting a ceramic base plate A method for cutting a ceramic base plate with which the process efficiency is improved, a stable cutting resistance can be maintained during the cutting process, and excellent process precision can be achieved, a wherein supporting plate which is used fo... | 01/23/2001 |
| 6116989 | Apparatus for dressing a grinding disc A skate sharpening apparatus is disclosed having top surface (20) and a grinding disc (21) rotatable about a vertical axis above the surface. A bearing body (23, 28) having a free slide support (23) and a blocking section (28) is secured to the surface (2... | 09/12/2000 |
| 6066562 | Method for fabricating silicon semiconductor discrete wafer A method of fabricating a silicon semiconductor discrete wafer is disclosed that assures excellent finishing accuracy and productivity. The method for fabricating a discrete wafer having a double-layer structure including an impurity diffused layer at one... | 05/23/2000 |
| 5954568 | Method, tool and device for the profiling of grinding worms for continuous gear grinding The profiling tool (10) has a segment (12) of a worm thread. Its active zone (13) is coated with grains of hard material (16) and is crowned in cylinder sections coaxial to the tool axis (26). During profiling, the grinding spindle (2) and the tool (10) r... | 09/21/1999 |
| 5660579 | Method and apparatus for forming a grinding wheel The metal bond wheel forming apparatus includes rotation speed control means 11 for controlling the rotation speed of a grinding wheel 6; energy control means 9 for controlling discharge energy that is supplied to the gap between a wire electrode 1 and th... | 08/26/1997 |
| 5622526 | Apparatus for trueing CBN abrasive belts and grinding wheels A trueing wheel for trueing an abrasive belt or wheel having cubic boron nitride abrasive particles. The trueing wheel has a radially outer peripheral surface which slopes at an acute angle with respect to its axis of rotation. Diamond particles, preferab... | 04/22/1997 |
| 5578222 | Reclamation of abrasive grain The invention provides a process for recovering abrasive grains from vitreous bonded materials by boiling the material in an aqueous solution of an alkali metal base.... | 11/26/1996 |
| 5535732 | Diamond-studded tool for dressing grinders, with a cone-shaped rolling means, on an oblique axis Tool (10) with diamonds (35) (35') (36) for dressing grinders (90) having a roller (11) rotating on a supporting shank (20) round an axis that intersects the axis of the shank (20) at an angle of 45°, with operative areas (30) (31) having one or more dia... | 07/16/1996 |
| 5497759 | Driving apparatus for a diamond toolholder The single-motored apparatus includes a motor which rotatingly drives a main shaft and a correction shaft, the main shaft in turn rotatingly driving the diamond toolholder, a clutch for coupling and uncoupling the shafts, and a cam/feeler assembly for tra... | 03/12/1996 |
| 5441449 | Integratable grinding wheel dresser A grinding wheel dresser, integratable with a grinding apparatus and useable to repeatedly dress the face of a grinding wheel to a selected contour in alternation with use of the grinding wheel, the dresser having a dressing mechanism, a dressing control ... | 08/15/1995 |
| 5411431 | Method for crown gear grinding by generation Crown wheels (21) are ground on a grinding machine with the aid of a hobbing grinding disc (11) of ceramic material which is formed on the same grinding machine with the aid of a dressing crown wheel (13) with one or more teeth (14) provided with a dressi... | 05/02/1995 |
| 5373666 | Grinding wheels for the machine working of marble and granite A shaped diamond wheel, at certain height, determined by both the type of grinding wheel which is being used and the working stage, is provided with a rotating feeling pin, consisting of a metal element a few millimeters high which projects for few hundre... | 12/20/1994 |
| 5363598 | Machine tool capable of grinding a workpiece with a truing apparatus A machine tool having a grinding wheel for grinding a workpiece mounted on a table. The machine tool is provided with a truing apparatus for truing the grinding wheel and a measuring device for measuring the diameter of the grinding wheel after every trui... | 11/15/1994 |
| 5235959 | Arrangement and method for regenerating rotating precision grinding tools The invention is directed to an arrangement for regenerating rotating precision grinding tools with a dressing tool and with a loose abrading medium suspended in a liquid and introduced into a gap between the dressing tool and the grinding tool. The dress... | 08/17/1993 |
| 5177901 | Predictive high wheel speed grinding system This invention is a new high wheel speed grinding process that uses only one very hard grade resin bonded grinding wheel of the desired abrasive grit size for the surface finish required, where simultaneously with the grinding of a workpiece the wheel fac... | 01/12/1993 |
| 5168671 | Dressing method and apparatus for super abrasive grinding wheel A method and apparatus for removing clogging material from between abrasive grains of a grinding wheel. A pressurized blasting fluid is supplied to a blasting gun, which in turn sucks an abrasive particle-liquid slurry into the gun. The slurry is entraini... | 12/08/1992 |
