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A self defense weapon formed as a memo pad and which is easily held by a person's fingers, therefore making it possible to provide protection from a mugger and also to quickly and easily write a record or a message without failure of missing or forgetting significant information under a stressful situation.
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| Number | Title | Issue Date |
| 7311585 | Substrate holding apparatus and polishing apparatus The present invention relates to a substrate holding apparatus for holding a substrate such as a semiconductor wafer in a polishing apparatus for polishing the substrate to a flat finish. The substrate holding apparatus according to the present invention comprises a... | 12/25/2007 |
| 7175514 | Polishing fixture assembly for a fiber optic cable connector polishing apparatus An apparatus that mass polishes a variety of fiber optic cable connectors simultaneously. The apparatus includes a plurality of polishing plates, each capable of holding its own polishing film and pad, and having a varying height. The apparatus further includes a pl... | 02/13/2007 |
| 7033260 | Substrate holding device and polishing device The present invention relates to a substrate holding apparatus for holding a substrate such as a semiconductor wafer in a polishing apparatus for polishing the substrate to a flat finish. The substrate holding apparatus according to the present invention comprises a... | 04/25/2006 |
| 6905392 | Polishing system having a carrier head with substrate presence sensing A system for polishing a substrate has a controller, pressure source, a platen, and a carrier for handling the substrate. The carrier must be able to detect if a substrate is present. In either the case of a false detection of substrate presence or the failure to de... | 06/14/2005 |
| 6485362 | Concave optical fiber ferrule holding plate A concave optical fiber ferrule holding plate for polishing an end face of an optical fiber is disclosed. The holding plate may be used alone for hand polishing or be provided as a component of an optical fiber polishing machine. The circular holding plat... | 11/26/2002 |
| 6479386 | Process for reducing surface variations for polished wafer A process for forming a semiconductor wafer which is single side polished improves nanotopology and flatness of the polished wafer. The process reduces the effect of back side surface features, such as edge ring phenomena and back side laser marks, on nan... | 11/12/2002 |
| 6186876 | Apparatus for grinding welding electrodes, in particular wolfram electrodes The invention is a grinding apparatus for grinding tips of welding electrodes. An apparatus for grinding welding electrodes in accordance with the invention includes a drive motor for rotating a grinding disc and an electrode holder for fixing a welding e... | 02/13/2001 |
| 6126528 | Preformed ophthalmic lens base block with textured surface The present invention provides novel preformed base blocks that may be used with thermoplastic ophthalmic lens blocking compositions. The preformed base block has a rear portion that is sized and adapted to fit the chuck of a lens processing machine and a... | 10/03/2000 |
| 5899793 | Lapping apparatus including a lapping base having pads A lapping apparatus for uniformly laps work pieces. The lapping apparatus includes a rotary lapping plate, a lapping base including a plurality of pads contacting the lapping plate, an adapter including first and second surfaces for supporting the mountin... | 05/04/1999 |
| 5816896 | Method and device for polishing gemstones A method for polishing a gemstone includes providing a polishing surface (11), mounting the gemstone in a holder (6) of a clamp (1), and choosing a reference plane (33) so that it corresponds to the polishing surface. Then the facet polishing depth is set... | 10/06/1998 |
| 5810649 | Tool guide for sharpening woodcarving and tools A tool guide for sharpening woodcarving and lathe tools comprises a holder frame having an adjustable clamping member for clamping a portion of a tool against an inner surface thereof, and an adjustable foot member removably connected to the holder frame ... | 09/22/1998 |
| 5746645 | Working a natural or synthetic hard stone such as a gemstone For blocking or polishing a natural or synthetic stone having a Mohs hardness greater than about 5, a blocking head has a body, a mounting member which can move vertically with respect to the body, and a rotary spindle driven by a motor. The mounting memb... | 05/05/1998 |
| 5645473 | Polishing apparatus A polishing apparatus for polishing a workpiece such as a semiconductor wafer has a reduced height compared with conventional polishing apparatuses. The height reduction is achieved by disposing a drive motor for rotating a top ring below a turntable, and... | 07/08/1997 |
| 5558564 | Faceting machine A machine is disclosed for forming facets on the surfaces of a plurality of workpieces. The machine is characterized by the presence of a plurality of pin members for holding the workpieces to be faceted against an abrading surface of a lap or an abrading... | 09/24/1996 |
| 5454747 | Faceting machine A machine is disclosed for forming facets on the surfaces of a plurality of workpieces. The machine is characterized by the presence of a plurality of pin members for holding the workpieces to be faceted against an abrading surface of a lap or a grinding ... | 10/03/1995 |
| 5435774 | Apparatus for holding gemstones to be polished A dop, a tang, and the combination of the two structures. The dop has an arc of movement of at least 75 degrees and as much as 95 degrees. The dop has an arcuate surface having an arc of movement of at least 95 degrees and a gear having key ways. The arcu... | 07/25/1995 |
| 5367837 | Gemstone holding apparatus During polishing of a gemstone (30, 100, 200), a coolant is passed in heat exchange relationship with the gemstone to remove heat. This reduces the risk of temperature degradation of the gemstone. In practice, this can be achieved by passing a fluent cool... | 11/29/1994 |
| 5297362 | Faceting head apparatus for working colored stones A faceting device for holding precious stones during cutting and polishing the facets. It comprises a two-part indexed quill member having a mounting at one end for mounting and locking the stone position relative to a horizontally rotating abrasive lap w... | 03/29/1994 |
| 5111562 | Spindle apparatus for holding a workpiece A spindle apparatus for holding a workpiece for machining includes a stationary support structure and preferably multiple rotary spindle members for holding individual workpieces. Each rotary spindle member is mounted in a spindle carriage that is rotatab... | 05/12/1992 |
| 5085011 | Method and apparatus for mounting and faceting gemstones Apparatus for grinding or polishing flat facets of gemstones comprising a mirror lap wheel base adapted to be mounted to a rotary drive and a lap film adapted to be mounted flushly upon the mirror lap wheel base.... | 02/04/1992 |
| 5072549 | Method of cutting gemstones and product A method of cutting facets on a gemstone to form a pentagonal shaped gem product such that the cut facets produce a five-legged star to appear beneath the gem table. The gem product produced by this method comprises a pavilion having thirty facets and fif... | 12/17/1991 |
| 5058324 | Gem stone facet forming apparatus A gem stone facet cutting apparatus is provided to include a cutting wheel rotating in a horizontal plane and supported above a base portion containing a variable speed cutting wheel drive system. A work on which facets are to be cut is supported at the f... | 10/22/1991 |
| 5044123 | Concave-convex faceting method and apparatus An apparatus is described for producing concave or convex optically magnified facets about a gem, each facet being a curved surface that is a section of a cylinder. It utilizes a mandrel having an exterior and/or interior cylindrical abrasive surface. The... | 09/03/1991 |
| 4944120 | Dop for gemstone handling during manufacture A dop for handling a gemstone comprising an elongate shaft having shank and gripper portions located at respective ends thereof, a shaped portion about the shaft defining a plurality of externally sensible features for providing information uniquely ident... | 07/31/1990 |
| 4864778 | Method and apparatus for mounting and faceting gemstones Gemstones are positioned for adherence to a faceting machine dop with apparatus that includes a transparent, target bearing base and x-y centering bars. A mirror lap wheel is also disclosed to which a lap film is mounted after flush facet contact with the... | 09/12/1989 |
| 4748775 | Work holding device in work grinding and polishing machine A work holding apparatus is used in grinding and polishing very hard and brittle tools, such as monocrystalline or polycrystalline diamond tools, diamond indenters, diamond knives, etc. The work holding apparatus includes a support member to be mounted on the ... | 06/07/1988 |
| 4715148 | Gem faceting machine A gem faceting machine has a main working spindle which can be pivoted in a vertical plane to obtain various inclinations of its axes, further being amenable to height adjustment and being capable of being rotated about its own axis, there being means for... | 12/29/1987 |
| 4667446 | Work holding device in work grinding and polishing machine A work holding apparatus is used in grinding and polishing very hand and brittle tools, such as monocrystalline or polycrystalline diamond tools, diamond indenters, diamond knives, etc. The work holding apparatus includes a support member to be mounted on the ... | 05/26/1987 |
| 4660330 | Bevel tool Described is a novel "bevel tool" and associated technique for holding prescribed magnetic head workpieces and placing them in prescribed constant angular relation with a rotary lapping means; this tool preferably including a workpiece-receiving pocket ad... | 04/28/1987 |
| 4643161 | Method of machining hard and brittle material An ultramicrotome diamond tool is provided with a diamond knife blade having first and second planar surfaces which intersect to define a cutting edge and a shank for holding the knife blade. In one embodiment of the ultramicrotome diamond tool the cuttin... | 02/17/1987 |
| 4616447 | Method and apparatus for machining a workpiece ultrasonically In uninterrupted and neat machining of a workpiece or material, particularly extremely hard material, with an ultrosonic tool is obtained by keeping constant or substantially constant the contact pressure between the tool and the worked surface. This is d... | 10/14/1986 |
| 4603512 | Apparatus for lapping a facet on a tip of a workpiece An apparatus for lapping a facet at the tip of a stylus by softly setting the tip down adjacent a rotating scaife comprises a moveable carriage supported on a platform. The carriage is moved vertically along a second axis substantially orthogonal to the f... | 08/05/1986 |
| 4561215 | Stylus lapping control The lapping of a facet into a conical diamond tip brazed to a metallic (titanium) shank is controlled by sensing an electrical pulse generated when the diamond facet is enlarged in the vicinity of the titanium shank. A pulse detecting circuit responding t... | 12/31/1985 |
| 4517770 | Gemstone polishing machine In a gemstone blocking or polishing machine, a stone holder is supported in a gimbal so that it can pivot about two perpendicular axes, the holder also being capable of rotation about its own axis. The outer ring of the gimbal is in the form of a gear rin... | 05/21/1985 |
| 4459780 | Cabochon copy grinding apparatus A cabochon copy grinding apparatus comprises a flexible template of a variable curvature, a template supporting ring the template head head of an adjustable holding distance, a grinding wheel, a master cabochon attaching shaft, a workpiece attaching shaft... | 07/17/1984 |
| 4419848 | Method and apparatus for rotating a stylus during lapping A stylus is attached to one end of a stylus holder which is mounted on a trunnion and adapted to rotate about a first axis. Attached to the trunnion is means for pivoting the trunnion about a second axis transverse to the first axis, in order to position ... | 12/13/1983 |
| 4418500 | Grinding apparatus An apparatus for grinding two flats of substantially the same dimensions in portions of a conical tip of an element. The apparatus comprises, in combination, a rotatably mounted holding member for holding the element; a rotatably mounted abrasive surface ... | 12/06/1983 |
| 4417423 | Stylus manufacturing method A method for forming a face on a crystalline dielectric material having anisotropic crystallographic hardness. The method includes the steps of contacting the dielectric material with an abrasive surface having a loosely bound charge of abrasive particles... | 11/29/1983 |
| 4365447 | Apparatus and method for sharpening a cutting stylus Apparatus for orienting a cutting stylus having a mounting face and a cutting face includes a base member having a flat, nonadhesive surface and a stylus holding fixture. The stylus holding fixture includes a mounting block having a surface vertical to th... | 12/28/1982 |
| 4335544 | Stone-positioning apparatus and method A technique for positioning a stone utilizes a pencil comprising a shaft having at one end a handle and at the opposite end supporting means adapted to hold a stone upon the application of a closing force thereto. The shaft has apparatus for adjusting the... | 06/22/1982 |
