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Match Document Document Title
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...
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...
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...
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...
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,...
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...
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...
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...
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...
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...
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,...
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...
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...
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....
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...
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...
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...
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...
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....
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...
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...
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...
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...
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...
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...
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...
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...
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...
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....
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...
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...
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...
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...
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...
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...
4287687 Variable work holding device for grinding gemstones  
This invention is that of a variable work holding device to be used for the grinding of various gemstones and industrial diamonds. The design and structure of the device provides that the device...
4286414 Work holder  
A work holder includes an elongated, hollow, cylindrical handle and a head secured within one end of the handle. A fixed jaw is secured to the head and projects longitudinally from the end of the...
4267670 Combined duplicator and preformer for lapidary use  
A lapidary machine is provided with a grinding wheel and a removable hinged adjustable fixture arranged to swing toward and away from a grinding surface on the wheel and having an adjustable slide...
4265057 Collet chuck aligning assembly for gem faceting machines  
Apparatus as described for centering a collet chuck relative to the longitudinal axis of a dop arm for a gem faceting machine. The apparatus includes a socket mounted to the dop arm and a plug...
4263753 Interchangeable faceting apparatus with reversible dual indexing mechanism  
Interchangeable faceting apparatus comprises a reversible dual indexing mechanism consisting of a primary indexing gear with a small number of notches and an auxiliary indexing gear controlling the...
4254587 Pivotal work holding device for grinding gemstones  
This invention is a work holding device that holds a stone in contact with an abrading surface for grinding of the stone. The stone is continuously moved across the face of the abrading surface in...
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....
4221082 Device for holding precious stones during cutting and polishing the facets thereof  
A device for holding precious stones during cutting and polishing the facets thereof comprises a rod having a mounting tip at one end for mounting the stone, a positioning collar loosely received...
RE30357 Device for grinding a cabachon  
A dop stick with an oval cabachon adhesively mounted thereon for application to a grinding stone has two axes of rotation, one axis to determine the longitudinal curvature of the face of the...
4202138 Bezel grinding attachment for a dop stick holder  
A removable bezel grinding attachment for a dop stick holder features a bezel table for support of a cabochon, the table replacing the dop stick of the holder, and means for adjusting the...
4201018 Cabbing device for gemstones  
A machine device for generating a convex surface, especially for the formation of the front surface of a cabochon, inherently symmetrical without irregularities and in a range of sizes both...
4174592 Lapidary device  
A power driven lapidary device for use in automatically grinding a sheet rock blank that has a generally elliptical shape to that of a cabichon, with the ground cabichon conforming in configuration...
4167085 Mounting assembly for gem blanks  
A mounting assembly for mounting precious stones such as gem blanks in a cutting and/or polishing machine comprising a self-clamping type chuck in an adjustable threaded engagement with a first...
4110937 Holding means for gem stones  
Apparatus for holding gem stones during machining, grinding and the like employing a chucking device utilizing a combination of vacuum and adhesive means to provide a firm holding means for the gem.
4106240 Apparatus for precisely indexing the orientation of a portion of a device with respect to a support structure of the device  
An apparatus for precisely indexing the orientation of a portion of a device with respect to a rigid support structure of the device by locking the portion of the device, at a digitally set angle...
Matches 1 - 50 out of 85 1 2 >