Matches 201 - 250 out of 448 < 1 2 3 4 5 6 7 8 9 >
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5767472 Method of repairing a spent electrode for plasma arc torch  
A method of repairing a spent electrode for a plasma arc torch. The method includes removing an end piece of the spent electrode thereby leaving an electrode base. A blind bore is drilled into the...
5762730 Method for machining steel edges for skis and the like  
Method for machining steel edges for skis or the like, the steel edge being at least partly rapidly heated, then rapidly cooled again and consequently hardened with the aid of a plasma jet. In...
5763852 Punch press with auxillary high-energy thermal cutting device and improved slag collection system  
A punch press having a high-energy, thermal melting device and an improved slag recovery system. The punch press is a bridge-type machine in which the workhead which carries the ram of the punch...
5760363 Apparatus and method for starting and stopping a plasma arc torch used for mechanized cutting and marking applications  
A plasma arc torch apparatus and method for cutting or marking a workpiece includes a torch having an electrode and a nozzle coupled to a power supply, and a plasma gas source coupled to a fluid...
5756960 Detecting non-symmetrical nozzle wear in a plasma arc torch  
A method and apparatus for detecting non-axisymmetric wear (i.e. grooving 22) of the orifice (12) of the nozzle (13) of a plasma arc torch (1) involves placement of a probe adjacent a plasma jet...
5750955 High efficiency, variable position plasma welding process  
In a plasma welding process, a voltage is applied between an electrode and an object for welding with injecting a plasma gas to generate a plasma, and welding is performed with taking the plasma as...
5731564 Method of operating a centrifugal plasma arc furnace  
A centrifugal plasma arc furnace is used to vitrify contaminated soils and other waste materials. An assessment of the characteristics of the waste is performed prior to introducing the waste into...
5719369 Stress corrosion crack repair by plasma arc welding underwater welding  
Stress corrosion cracking damage to stainless steels and nickel base superalloys is repaired by underwater plasma transferred arc welding which under conditions which reduce residual tensile...
5717187 Plasma torch condition monitoring  
A method and apparatus for monitoring the condition of a plasma arc torch determines whether the nozzle (13) of the torch and an electrode (11) of the torch have suffered any erosion and...
5717186 Method and device for controlling the electric current density across a workpiece during heat treatment in a plasma  
In a method for controlling the electric current density across a workpiece in a furnace during heat treatment in a plasma an auxiliary electrode with a known surface area is introduced into the...
5702621 Method for the treatment of comminuted matter by electrical discharge  
A method for the treatment of matter by plasma action to produce a glassy product. A plurality of electrode structures are positioned to define a reaction zone associated with the inter-electrode...
5695662 Plasma arc cutting process and apparatus using an oxygen-rich gas shield  
A plasma arc torch has a secondary gas flow that is extremely large during piercing of a workpiece to keep splattered molten metal away from the torch and thereby prevent "double arcing". The...
5695663 Plasma cutting method and NC plasma cutting apparatus  
The present invention relates to a plasma cutting method and an NC plasma cutting apparatus in which an improvement can be made in the quality of a bore-cut product obtained by using a transferred...
5685997 Plasma oscillator water heater/steam boiler  
A plasma oscillator photonic energy water heater/steam boiler, establishes, amplifies and stores photonic energy in a plasma wherein resonance and temporary energy storage is maintained until...
5670065 Apparatus for plasma treatment of fine grained materials  
"An apparatus for plasma treating fine-grained materials, having a receptacle that can be evacuated and that accepts and agitates the materials to be treated, and having an electromagnetic device...
5667705 Discharge chamber and method of manufacturing the same  
A discharge chamber wherein incomplete discharge arising from a discharge electrode surface condition is suppressed and a manufacturing method for the discharge chamber are disclosed. The discharge...
5626249 Plasmalysis treatment method for waste matter  
A method for the treatment of waste matter by plasma action. A plurality of electrode structures are positioned to define a reaction zone associated with the inter-electrode space. The...
5614110 Varying protective gas composition between piercing and cutting with plasma torch  
The present invention comprises a plasma cutting method and a cutting apparatus in which switching can be effected between suitable flow rates of a protective gas at the time of piercing and at the...
5614111 Method for making metallized capacitor having increased dielectric breakdown voltage  
A metallized film capacitor in which the metallization is made as thin as possible in order to increase the dielectric strength of the film. In the industry, typical metallization thicknesses range...
5611947 Induction steam plasma torch for generating a steam plasma for treating a feed slurry  
Steam plasma reactor incorporating an induction steam plasma torch where superheated steam is generated and passed through an induction coil or coils to generate high temperature steam plasma for...
5599469 Plasma welding process  
In a plasma welding process, a voltage is applied between an electrode and an object to be welded so as to generate a plasma arc with a plasma gas directed through a torch to surround the...
5597497 Switch mechanism for operating a plasma arc torch, other tools or weapons  
A switch mechanism with a safety member for operating a tool or a weapon which reduces the probability of inadvertent operation. The switch mechanism comprises a trigger and a safety member...
5595669 Method of forming coupling diopters at the ends of optical fibers  
To enable surface tension forces to confer upon an optical fiber end (P1), a shape procuring good optical coupling the end is partially melted in an electric arc (ZC). To improve the...
5562841 Methods and apparatus for treating a work surface  
A work surface, e.g. an integrated circuit, is treated with a plasma jet. The work surface is shielded from an ambient medium by a shielding gas jet directed to create a shielded zone around the...
5560844 Liquid film stabilized induction plasma torch  
A liquid film stabilized induction plasma torch comprises a cylindrical torch body made of cast ceramic or polymer-matrix composite, a coaxial cylindrical plasma confinement tube mounted inside the...
5539176 Method and apparatus of synthesizing diamond in vapor phase  
A DC plasma jet method enables us to synthesize diamond at a high speed by spraying an activated carbon-containing gas as a plasma jet to a substrate. Despite the high speed deposition, the method...
5532449 Using plasma ARC and thermite to demolish concrete  
A plasma arc can be employed to demolish a concrete structure at a high efficiency, while preventing a secondary problem due to noise, flying dust and chips, and the like. The concrete structure...
5532447 Method of cleaning an aluminum surface by plasma treatment  
A method of cleaning an aluminum surface includes treating the surface by cold plasma process employing a mixture of about 30 to 70 percent oxygen by volume and about 30 to 70 percent freon by...
5528012 Apparatus and method for starting a plasma arc treatment system  
An ignitable material is positioned in contact with a slag contained within a plasma arc treatment system having an electrode and an electrical ground. The slag is initially at a temperature below...
5521351 Method and apparatus for plasma surface treatment of the interior of hollow forms  
A plasma is generated within the interior of a hollow form held within a vacuum chamber enclosure by utilizing a radio frequency coil mounted within the vacuum chamber and defining a working volume...
5503725 Method and device for treatment of products in gas-discharge plasma  
A method for treatment of products in gas-discharge plasma consists in that a two-step vacuum-arc discharge is initiated between an anode (3) and an integrally cold cathode (2), featuring a...
5493117 Apparatus and method for glow discharge treatment of a moving web using electrodes fitted into a single common socket and having end portions covered by electrically conductive shields  
Apparatus and method for glow discharge treatment of opposite surfaces of a moving web such as a plastic film or metallic sheet. The web moves in a vacuum housing between two rows of elongated...
5493094 Preparation of fullerenes and apparatus therefor  
Fullerene-containing soot, is prepared by evaporating an electrically conductive carbon rod in an electric arc plasma sustained in a tubular evaporator between coaxially aligned carbon rods in a...
5486675 Plasma production of ultra-fine ceramic carbides  
An apparatus and method for the synthesis of ultra-free (submicron) ceramic carbides in a thermal plasma torch reactor using primarily silica, boron oxide, titanium dioxide or other oxides as metal...
5484978 Destruction of hydrocarbon materials  
In the method of destroying hydrocarbons disclosed herein, a high temperature plasma is generated from an electrical discharge in a flow of hydrogen gas devoid of oxygen. The hydrocarbon to be...
5471031 Chamber free plasma welding root side purging method and apparatus  
A method and apparati are presented for non-chamber root side purging in fusion welding of oxygen reactive metals which require that the molten weld zone and local solid areas of the weld seam...
5466905 Low electric D.C., low time rate polarity reversing arc welding method  
Direct electric current arc welding between an electrode and a workpiece surface is accomplished in the electric current range of about 0.5-45 amps while reversing the polarities between the...
5466906 Process for coating automotive engine cylinders  
A method for coating the internal cylinder bores of a cast aluminum engine block comprising the steps of casting an engine block of aluminum alloy, thermally spraying a wear-resistant coating onto...
5466907 Process for coating the internal surfaces of hollow bodies  
A process of coating the internal surface of a hollow body by depositing a coating on a substrate having an external surface similar to the internal surface of the hollow body; inserting the coated...
5453305 Plasma reactor for processing substrates  
A plasma reactor and method for forming a dense plasma from a gas is described incorporating a housing, a gas inlet to the housing, a pump for evacuating the housing, a magnetic coil to generate a...
5451740 Convertible plasma arc torch and method of use  
A plasma arc torch is provided which is convertible in the field as to be able to operate in either a transfer arc mode or non-transfer arc mode. The plasma arc torch comprises a torch body having...
5442153 High velocity electric-arc spray apparatus and method of forming materials  
A high velocity arc spray apparatus includes a transferred-arc-plasma torch assembly which forms a transferred-arc column. A metal feedstock is fed into the transferred-arc column at an angle such...
5436423 Method and apparatus for continuously cutting parts from a coil of sheet metal  
A method and apparatus for automatically and continuously producing multiple blanks from a coil of sheet material with a minimum of scrap. The apparatus utilizes pinch rolls to advance and retract...
5436425 Method and apparatus for plasma cable cutting  
A method and apparatus area disclosed for utilizing a plasma cutting torch to severe the free ends of a post-tensioned cable embedded in a concrete body. The method and apparatus utilize a...
5420390 Image heating apparatus using a microwave discharge plasma lamp  
An improved image heating apparatus using a plasma lamp is disclosed. The apparatus comprises at least one rotary elliptical mirror having a reflection surface of a rotary elliptical body at the...
5414236 Process for high quality plasma arc cutting of stainless steel and aluminum  
A plasma arc torch uses a mix of reactive and reducing gas flows to cut sheets of stainless steel, aluminum and other non-ferrous metals. The reducing gas flow to the cut is varied as a percentage...
5399833 Method for vitrification of fine particulate matter and products produced thereby  
The present invention provides a method for the melting and subsequent solidification of fine particulate material by use of a plasma torch. The fine particulate material is introduced into a...
5399832 Process and apparatus for using atmospheric-pressure plasma reactions  
A grounded electrode and a high-voltage applying electrode, each obtained by covering a metal electrode with a dielectric are housed at least within a reactor apparatus. A rare gas can be...
5399829 Material treatment method and apparatus  
A method of treating waste material which involves creating a substantially continuous curtain of plasma and directing the material to be treated through that curtain. An electric arc is generated...
5383980 Process for hardening workpieces in a pulsed plasma discharge  
Workpieces of steel are hardened by carburizing the surface and then quenching. The carburizing is performed by means of a plasma discharge in a vacuum, in the presence of gaseous hydrocarbons at...
Matches 201 - 250 out of 448 < 1 2 3 4 5 6 7 8 9 >