Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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| Number | Title | Issue Date |
| 7429818 | Plasma lamp with bulb and lamp chamber A dielectric waveguide integrated plasma lamp (DWIPL) with a body comprising at least one dielectric material having a dielectric constant greater than approximately 2, and having a shape and dimensions such that the body resonates in at least one resonant mode when... | 09/30/2008 |
| 6659110 | Method and apparatus for cleaning drums or belts A method of removing organic impurities from a surface of a substrate that is used for feeding or processing web material, wherein a jet of an atmospheric plasma is directed onto the surface of the substrate.... | 12/09/2003 |
| 6621199 | High intensity electromagnetic radiation apparatus and method A method and apparatus for producing high intensity electromagnetic radiation are disclosed. The apparatus includes a high intensity arc lamp having an inner envelope cooled by a first flow of liquid along an inside surface of the inner envelope. The arc ... | 09/16/2003 |
| 6452129 | Plasma torch preventing gas backflows into the torch A plasma arc torch is disclosed which has an elongated electrode with an open front and a nozzle with a plasma discharge opening that is coaxial with the electrode. A mounting arrangement includes a ceramic ring that engages the front end of the electrode... | 09/17/2002 |
| 6281622 | Closed electron drift plasma thruster adapted to high thermal loads The closed electron drift plasma thruster uses a magnetic circuit to create a magnetic field in a main annular channel for ionization and acceleration, said magnetic circuit comprises: an essentially radial first outer pole piece; a conical second outer p... | 08/28/2001 |
| 6278241 | Four-nozzle plasma generator for forming an activated jet A four-nozzle plasma generator comprising two anode electrode chambers and two cathode electrode chambers connected to DC power sources and generating four plasma jets of which the shape and the path are determined by an external magnetic field system. Th... | 08/21/2001 |
| 6225745 | Dual plasma source for plasma process chamber A dual plasma source (80) is provided for a plasma processing system (10), comprising a first plasma source (82) and a second plasma source (84). The first plasma source (82) has a first plasma passageway (86) for transporting a first plasma therethrough ... | 05/01/2001 |
| 6191380 | Plasma arc torch head A method of centering an electrode in the nozzle of a plasma arc torch head is disclosed. The method involves complementing the external wall of the swirl to the internal taper of the nozzle; complementing the internal wall of the swirl to the external ta... | 02/20/2001 |
| 6002096 | Plasma torch with a single electrode producing a transferred arc The plasma torch produces a transferred arc and has only one electrode integrated in the torch with the counter electrode being provided by the material being treated. The torch includes an outer housing (3), a single hollow electrode (5) arranged in the ... | 12/14/1999 |
| 5837958 | Methods and apparatus for treating the surface of a workpiece by plasma discharge A surface of a workpiece is treated by electric discharge. In particular, a concentrated plasma jet is generated through an arc discharge by a non-transferred electric arc while feeding--in a working gas. The surface of the workpiece to be treated is brus... | 11/17/1998 |
| 5747917 | Double-walled mircrowave plasma based applicator An improved plasma applicator uses a double-walled sapphire sleeve assembly to provide a high efficiency cooling mechanism that is adapted for use with high power applications and aggressive plasma chemistries in the generation of a plasma. Plasma contain... | 05/05/1998 |
| 5726414 | Plasma torch with swirling gas flow in a shielding gas passage A plasma torch of swirling plasma gas flow type is disclosed in which there are provided an electrode body having a forward end thereof and a nozzle that is arranged to enclose said forward end portion of the electrode and that is spaced therefrom across ... | 03/10/1998 |
| 5465030 | Trigger apparatus for spark gap dischargers An improved means for triggering high voltage spark gap devices for current injection and pulse power applications which utilizes the high voltage source itself to trigger the discharge. A switch initially directs current flow from the high voltage source... | 11/07/1995 |
| 5374802 | Vortex arc generator and method of controlling the length of the arc A DC plasma arc generator and method of operation to reduce erosion of the internal parts. The arc generator includes a generally cylindrical anode and a generally cylindrical interelectrode having critical dimensions and spacing to allow introduction of ... | 12/20/1994 |
| 5362938 | Plasma arc welding torch having means for "vortexing" plasma gas exiting the welding torch A plasma arc welding torch wherein a plasma gas is directed through the body of the welding torch and out of the body across the tip of the welding electrode disposed at the forward end of the body. The plasma gas is provided with a vortexing motion prior... | 11/08/1994 |
| 5076051 | Long life arcjet thruster having diffuse cathode arc attachment An arcjet thruster comprises a cathode body and anode body tandemly arranged and separated by an insulative propellant injection ring. The cathode body has a cathode cavity therein having a convergent and a divergent portion forming a throat therebetween.... | 12/31/1991 |
| 4995805 | Method and apparatus for increasing radiant heat production of hydrocarbon fuel combustion systems A method and apparatus for increasing radiant heat production of hydrocarbon fuel combustion systems are provided. In one aspect, the apparatus includes a pair of spaced electrodes through which a hydrocarbon fuel gas is flowed. An electrica arc is struck... | 02/26/1991 |
| 4968918 | Apparatus for plasma treatment An apparatus for plasma treatment of long continuous materials, typically sheet materials, which comprises a plasma treatment chamber, an electric power introducing member positioned in the central portion of the chamber, a plurality of antenna electrodes... | 11/06/1990 |
| 4967055 | Plasma torch A three-part front-end assembly for a plasma arc cutting torch utilizing a single inlet gas is disclosed. The front-end assembly includes (1) an electrode having an integral, hollow, elongated, interior cooling tube, (2) a tip element with integral swirl ... | 10/30/1990 |
| 4937490 | High intensity radiation apparatus and fluid recirculating system therefor An apparatus for producing high intensity radiation has electrodes positioned within an elongated cylindrical arc chamber across which an arc discharge can be established. Liquid is injected into the arc chamber to produce a vortex motion therein to form ... | 06/26/1990 |
| 4907407 | Lifetime arcjet thruster An arcjet thruster has an anode body forming a constrictor and a nozzle which define an arc chamber. The thruster also has a cathode in the form of a rod having a tip and being spaced upstream from the constrictor. The thruster employs several features wh... | 03/13/1990 |
| 4886993 | Spark gap switch with spiral gas flow A spark gap switch having a contaminate removal system using an injected gas. An annular plate concentric with an electrode of the switch defines flow paths for the injected gas which form a strong spiral flow of the gas in the housing which is effective ... | 12/12/1989 |
| 4780591 | Plasma gun with adjustable cathode A plasma generating system comprises a plasma gun including a hollow cylindrical anode member, a hollow cylindrical intermediate member electrically isolated from and juxtaposed coaxially with the anode member to form a plasma-forming gas passage through ... | 10/25/1988 |
| 4700102 | High intensity radiation apparatus having vortex restriction means A high intensity radiation source. A liquid vortex wall is formed on the inside surface of an arc chamber to restrict the diameter of an arc generated between electrodes. The liquid vortex wall is obtained by utilizing a vortex generating means which incl... | 10/13/1987 |
| 4683367 | Method and device for controlling the erosion of the electrodes of a plasma torch Method and device for controlling the erosion of the electrodes of a plasma torch, in which an electrical arc is produced when the electrodes are connected to an electrical supply. An axial magnetic field generated by a system of field coil causes the rot... | 07/28/1987 |
| 4649257 | Gas distribution ring for plasma gun A gas distribution ring for a plasma gun comprises a ring member with two sets of gas inlet orifices extending from the outer surface inwardly through the ring member. The outer surface has an undulated groove for an O-ring formed therein, and the orifice... | 03/10/1987 |
| 4644576 | Method and apparatus for producing x-ray pulses A plasma source (34, 150) for producing a pulse of soft x-rays includes a tubular cathode electrode (76) concentric within, and surrounded by a generally cylindrical anode electrode (44). A fast-acting gas valve (101, 152) discharges a plurality of inclin... | 02/17/1987 |
| 4639570 | Apparatus for stabilization of low-temperature plasma of an arc burner Method of and apparatus for stabilizing a plasma stream by the use of two different stabilization liquids. The plasma arc is stabilized in the discharge chamber by a whirl of a first stabilization liquid containing at least one element chosen from the gro... | 01/27/1987 |
| 4620080 | Plasma jet generating apparatus with plasma confining vortex generator A plasma jet generating apparatus including a torch center electrode, a torch nozzle, a first DC source, and a vortex flow/discharge unit. The unit includes a second DC power source, a gas diverter nozzle, and a vortex flow chamber. The second DC power so... | 10/28/1986 |
| 4572942 | Gas-metal-arc welding process In a gas-metal-arc welding process, a stable plasma formation is produced by a shielding gas mixture whose flow is focused to steadily maintain the plasma formation in central alignment with the arc. Thus, the plasma energy and arc energy are combined and... | 02/25/1986 |
| 4558201 | Plasma-arc torch with gas cooled blow-out electrode A plasma arc cutting torch housing defines a chamber which has an outlet at the end of the housing. The torch also includes an electrode in the chamber near the outlet and means in the chamber for separating the gas flowing towards the outlet of the housi... | 12/10/1985 |
| 4536640 | High pressure, non-logical thermal equilibrium arc plasma generating apparatus for deposition of coatings upon substrates An apparatus for deposition of coatings upon substrates generates a non-local thermal equilibrium arc plasma at the relatively high pressure of at least approximately 1 atmosphere. A closed chamber (25) is defined by a cylindrical anode (11) and annular h... | 08/20/1985 |
| 4517495 | Multi-electrode plasma source A multi-electrode plasma source for maintaining a plasma loop for heating a stream of sample material traveling along a predetermined path through the loop. Included is at least one set of at least three spaced-apart electrodes having tips circumferential... | 05/14/1985 |
| 4506136 | Plasma spray gun having a gas vortex producing nozzle A plasma flame spray gun suitable for being constructed physically smaller than comparable power prior art plasma flame spray guns. The gun includes a nozzle having a tapering portion on the inlet side thereof. A cathode with a flat tip is positioned to a... | 03/19/1985 |
| 4426597 | Ionized gas generator at very high temperature and very high pressure The present invention relates to an ionized gas generator with supersonic homogeneous flow. This generator comprises unitary modules comprising: two coaxial electrodes of cylindrical form, the downstream electrode being open and having the flow passing thereth... | 01/17/1984 |
| 4355262 | Electric arc apparatus Apparatus for treating a flow of material by an electric arc generates free radicals and/or atoms, and charged species, in ground or excited states. A cathode (13) and an anode (14) are arranged for striking an arc across a preferably annular gap and prov... | 10/19/1982 |
| 4341941 | Method of operating a plasma generating apparatus Disclosed is a method of operating a plasma generating apparatus including at least one multi-bushed torch unit. The ratio of inside gas flow rate-to-outside gas flow rate in the channels of the torch unit are experimentally determined so as to assure the... | 07/27/1982 |
| 4338509 | Process of and apparatus for producing a homogeneous radially confined plasma stream Process of radial stabilization and homogenization of a plasma stream and a liquid stabilized plasma burner for the realization of such process. The arc is stabilized by its passage through several orifice plates, stabilized by a whirl or eddy of cooling ... | 07/06/1982 |
| 4088966 | Non-equilibrium plasma glow jet A high power density continuous wave (c. w.) gas dynamic laser system is described which includes a non-equilibrium plasma jet for generating excited gaseous species having high vibrational temperature and low gas temperature. Gas flow through the plasma ... | 05/09/1978 |
| 4042850 | Microwave generated radiation apparatus An apparatus for efficiently coupling microwave energy to a highly dissipative load such as a plasma lamp tube. A longitudinally extending lamp tube is enclosed in a longitudinally extending non-resonant microwave chamber having a pair of coupling slots t... | 08/16/1977 |
