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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 8164020 | Electrode and its use in a metal disintegrator A graphite electrode and a holder for the electrode for use in a metal disintegrator, the electrode having a hollow columnar body with a skirt wall open at one end, the skirt wall having a plurality of holes extending between one end and an opposite end, the holes b... | 04/24/2012 |
| 7262382 | Process of forming conical holes with an electrical discharge machining system An electrical discharge machine is configured to (i) machine at least a portion of a workpiece through electrical discharge between the workpiece and a first machining electrode aligned by the electrode guide; (ii) generate a dressed machining electrode by engaging ... | 08/28/2007 |
| 7241962 | Electrical discharge texturing machine A low cost electrical discharge texturing machine which can texture work rolls having a broad range of diameters and lengths either on a production or research and development basis. The machine is relatively portable, for example, it can be mounted on a palate, and... | 07/10/2007 |
| 7168935 | Solid freeform fabrication apparatus and methods An apparatus for formation of a three dimensional object comprising a sealed container; an electron beam subsystem capable of directing energy within said container; a positioning subsystem contained within said container; a wire feed subsystem contained within said... | 01/30/2007 |
| 7146850 | Roll contour measuring apparatus and method A non-contact apparatus and method for precision measurement of the surface characteristics of work rolls which are used in the manufacture of sheet steel and other sheet metal products. The apparatus and method can be used to accurately measure the parameters of cr... | 12/12/2006 |
| 7102096 | Method and apparatus for electric-discharge machining of a turbine blade A method and apparatus for electric-discharge machining a turbine blade are provided. The method includes the steps of: a) preparing a disc material divided into an first portion and a second portion on a basis of a symmetrical line, b) fixing the disc material, wit... | 09/05/2006 |
| 7024761 | Device for destroying sharp, pointed objects which is fitted with means for automatically unscrewing injecting needles and similar A sharp cutting object disposal device provided with means for automatic unscrewing of venopuncture needles and the like, consisting of a tube to which a pair of motors or a gear wheel are fixed, the wheel which, actuated by a geared part that upon sliding on the ge... | 04/11/2006 |
| 7013195 | Wire electric discharge machining apparatus In a wire electric discharge machining apparatus, data on the number of machining shapes and the machining frequency of each of the machining shapes are acquired by analyzing the machining program and acquiring data on the machining starting positions, and those dat... | 03/14/2006 |
| 7009133 | Wire-cut electric discharge machine A wire-cut electric discharge machine capable of taking out a cutoff piece smoothly upwardly of a workpiece even if the cutoff piece has a complicated shape, by holding the cutoff piece horizontally not to change an orientation thereof. The wire-cut electric dischar... | 03/07/2006 |
| 7005112 | Thermal decomposer for waste A thermal decomposition apparatus for wastes comprises: a heating chamber; an inlet port; at least one pair of electrodes provided within the heating chamber; a plurality of balls each taking the shape of a sphere whose primary ingredient is carbon, provided between... | 02/28/2006 |
| 6943314 | Method for producing a double-sided Rabies I.D. tag A method for making a double sided, metal Rabies I.D. tag with an electronic engraving machine capable of inscribing data on both sides such as one side of the I.D. tag has inscribed personal contact information along with the name of the pet, and the other side has... | 09/13/2005 |
| 6730873 | Oxy-carbon arc cutting electrode A consumable, oxy-carbon arc cutting electrode to be used in an oxygen exothermic torch for cutting both ferrous and non-ferrous metals. The cutting electrode includes a hollow, outer copper clad steel tube. A plurality of copper clad carbon fuel rods run through an... | 05/04/2004 |
| 6621034 | Method of manufacturing die The method includes the steps of preparing a die main body; performing batch supply hole machining with respect to one principal plane of the die main body to form batch supply holes; using a cutting apparatus to perform slit machining with respect to the... | 09/16/2003 |
| 6621031 | Syringe and needle destruction device A device that operates to reduce the hazard involved in the disposal of conventional hypodermic needles used throughout the medical world. When the needle is presented to the inventive device, while still attached to the syringe, it is vaporized an electr... | 09/16/2003 |
| 6503387 | Method and device for electro-chemical discharge processing with self-acting bubble layer The present invention relates to an electrochemical discharge method and device with self-acting bubble layers, wherein the device comprises an electrode, being the cathode, capable of supplying self-acting bubble layers, an auxiliary electrode, being the... | 01/07/2003 |
| 6384362 | Method and apparatus for destroying needles Biohazardous needles are destroyed by the application of an electrical arc that progressively destroys the needle and seals hollow needles. An elongate electrode that slopes up and away from the needle supports is used to strike an then progressively supp... | 05/07/2002 |
| 6284994 | Electrode system for perforating synthetic plastic films An apparatus for perforating a film has one or more electrodes in electrode holders to lightly contact the film, a return electrode to support the film, and a voltage coupler to produce a discharge between the electrodes to perforate the film. A water jet... | 09/04/2001 |
| 6281462 | Burr processing apparatus There is developed a burr processing apparatus in which a discharge electrode is moved along a peripheral edge of the processed material, the burr is processed in an entire uniform manner and concurrently the arc discharge is performed stably and a long l... | 08/28/2001 |
| 6118094 | Arc deburring of electrochemical cell electrodes Method and apparatus for deburring conductive articles such as electrochemical cell electrodes prior to their assembly into completed cells. An electrode substrate is passed in a continuous motion between two discharge elements between which a high voltag... | 09/12/2000 |
| 6011231 | Electrode wire recovery system for electric discharge machine The invention relates to an improved manner of recovering the used electrode wire discharged from an electric discharge machine (EDM). A more detailed object of this invention is to provide an efficient and effective system for electrode wire scrap collec... | 01/04/2000 |
| 5942133 | Holder for a carbon arc electrode An improved holder for a carbon arc electrode has a tubular handle that receives an electrical conductor and a hose for conducting air under pressure. An insulation block is affixed to the forward end of the tubular handle. A metal torch body extends from... | 08/24/1999 |
| 5935460 | Method of performing high-efficiency machining by high-density radical reaction using a rotating electrode, device for performing the method and the rotating electrode used therefor There are provided a method for performing high-efficiency machining by high-density radical reaction using a rotating electrode, in which a large amount of the reaction gas is supplied to a machining gas between a machining electrode and a workpiece unde... | 08/10/1999 |
| 5868709 | Portable modular apparatus and method for destroying medical needles A portable electronic (electro-mechanical) device for destroying sharp, contaminated hypodermic and other medical needles includes an upper electrode assembly, two fixed, and one moveable electrode situated between the two fixed electrodes. The moveable e... | 02/09/1999 |
| 5773780 | Method of severing bond wires and forming balls at their ends The efficacy of electrical discharges for severing bond wires and/or for forming balls at the ends of bond wires (including bond wires already severed by alternative mechanisms) is improved by performing the electrical discharges in the presence of ultrav... | 06/30/1998 |
| 5593603 | Method for producing hardened flutes in a kelly bar A method for processing a carbon steel body by electric arc gouging with a carbon electrode to create flutes with a hardened heat zone containing finely dispersed martensite beneath the bottom surface of each flute. This process can form a kelly bar havin... | 01/14/1997 |
| 5262608 | Underwater torch cutting and welding apparatus An apparatus for torch cutting and welding which is safe, easy to use, accurate, provides an exceptionally clean cut of any desired shape, and can be brought into a non-operating state by the operator underwater. The apparatus includes a body having at le... | 11/16/1993 |
| 5212362 | Method and apparatus for disposing of contaminated hypodermic needles A portable electrical apparatus for destroying contaminated sharp medical instruments. The sharp portion of an instrument is inserted into the apparatus and electrically grounded. An electrically activated electrode is pivotally advanced to approach or co... | 05/18/1993 |
| 5077456 | Portable device for cutting the inside wall of a tube by a continous arc A spark disintegrator tube cutter comprises a housing having a shaft with armature rotatably mounted in the housing. A conductive base which is electrically connected to a post accessible from outside the housing, carries a carbon brush against which the ... | 12/31/1991 |
| 5003146 | Universal fitting for metal disintegration electrodes A universal fitting for electrodes for use with electric arc metal disintegrator apparatus. The fitting accommodates all sizes of electrodes used with metal disintegrator apparatus and enables electrodes as short as one inch to be used. The universal fitt... | 03/26/1991 |
| 4985610 | Cutting torch A cutting device which includes an external tube, an internal tube disposed within the external tube, and a number of steel rods or wires housed within the internal tube. A squib, with or without additional fuel, is disposed within the external tube and a... | 01/15/1991 |
| 4950863 | Apparatus for air arc gouging An air arc gouger. A central power supply (10) and a welding station (11) are used for welding operations, such as welding two metal plates (30A, 30B) together. If a weld (30C) is required to be removed, an adapter circuit (12), in conjunction with the ce... | 08/21/1990 |
| 4918278 | Joinable arc gouging electrodes with indicator for indicating, during use, when arc is a predetermined distance from end of electrode; and method of using same Method and Apparatus for using successively joined carbon electrodes (that are not coated with a metal) shaped with a projection at one end and a socket at the other end. In order for the user to know the existing length of the electrode performing the go... | 04/17/1990 |
| 4914271 | Arc working torch and machine, and cartridge for said torch Arc torch for plasma arc cutting or welding comprising an interchangeable cartridge comprising an electrode and a nozzle, and connecting elements between the cartridge and the body of the arc torch to axially insert and remove the cartridge by a purely re... | 04/03/1990 |
| 4891485 | Device for fastening an EDM tool in plural orientations A device permits fastening a tool (preferably an EDM tool) to a machining head in at least two different orientations. The tool is mounted on a tool holder, and a pair of portions alternately fix the holder to the head in two different orientations, for e... | 01/02/1990 |
| 4876429 | Device for retaining tools or workpieces having a cylindrical shaft A coupling device for coupling, for example a shaft of a tool, to a coupling member anchored to a machine tool, comprises a take-up bushing formed with a conical recess receiving a substantially conical tapered sleeve which receives the shaft and is forme... | 10/24/1989 |
| 4853512 | Spark erosion machining apparatus A spark erosion machining apparatus with an electrode changing mechanism having electrode support members and a frame that are connected to the interior front wall of the tub that can be opened like a door Two pairs of levers are pivotally mounted on the ... | 08/01/1989 |
| 4825029 | Spark erosion system for reducing the height of a honeycomb seal An apparatus for machining metal substrates such as honeycomb seals is provided. The apparatus includes a spindle unit including a motor and shaft. The motor is used for rotating the spindle shaft about its longitudinal axis. The spindle shaft is connecte... | 04/25/1989 |
| 4777340 | Wire electrical discharge machining apparatus A wire electrical discharge machining apparatus which cuts to a desired shape a workpiece placed on a workpiece table, using a discharge phenomenon occurring between the workpiece and a wire electrode opposite to the workpiece with a machining fluid in a ... | 10/11/1988 |
| 4777338 | Perforation of synthetic plastic films Spark perforation of synthetic plastic film is carried out by applying electrodes to opposite ends of a portion of the film submerged in a water bath that is at a temperature above the onset temperature of glass transition of the film,and applying short f... | 10/11/1988 |
| 4771157 | Electrical discharge machining apparatus for forming minute holes in a workpiece An electrical discharge machining apparatus for forming minute holes in a workpiece has a machining electrode supported in V-shaped grooves for forming a minute hole through an electrical discharge between the machining electrode and the workpiece. The ma... | 09/13/1988 |
