Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 7797811 | Method for fastening sheet material The invention relates to a system of fastening sheet material cladding onto substrates with hammer driven fasteners. The fasteners are cylindrical and have a first diameter at a tip end which is larger than a second diameter at a head end. When the fastener is drive... | 09/21/2010 |
| 6254311 | Removal of ground contaminents Removal of Light, non-Aqueous Phase Liquids (LNAPLs) from contaminated soils is expedited by injecting gas into extraction wells. The extraction wells are operated with a vacuum assist which produces a mounding of groundwater around the well. Gas is injec... | 07/03/2001 |
| 6227486 | Propulsion system for earth to orbit vehicle A single-stage earth-to-orbit launch vehicle employs a combination of rocket engines and turbojet engines to propel a device into orbit. The vehicle is driven through a unique set of operating conditions of the engines to conserve oxidizer and optimize ac... | 05/08/2001 |
| 6202404 | Method and apparatus for reducing the temperature of air entering a compressor of a turbojet engine by variably injecting fluid into the incoming air A turbojet engine has a capability for propelling an air-borne vehicle over an extremely wide range of operating speeds. A vehicle can be propelled from take-off conditions through speeds in excess of Mach 5. The engine is equipped with a cooling fluid in... | 03/20/2001 |
| 6170668 | Apparatus for extraction of contaminants from a gas A method of treating industrial gases to remove contaminants is disclosed. Ions are generated in stream of injectable gas. These ions are propelled through the contaminated gas as it flows through a collection unit. An electric field is applied to the con... | 01/09/2001 |
| 6153158 | Method and apparatus for treating gaseous effluents from waste treatment systems Effluents from a waste treatment operation are incinerated and oxidized by passing the gases through an inductively coupled plasmas arc torch. The effluents are transformed into plasma within the torch. At extremely high plasma temperatures, the effluents... | 11/28/2000 |
| 6027616 | Extraction of contaminants from a gas A method of treating industrial gases to remove contaminants is disclosed. Ions are generated in stream of injectable gas. These ions are propelled through the contaminated gas as it flows through a collection unit. An electric field is applied to the con... | 02/22/2000 |
| 6015963 | Plasma arc furnace with improved replaceable electrodes A plasma arc waste treatment furnace is equipped with a plasma arc torch having an electrode formed from a conductive refractory material. The refractory electrode can be operated at very high temperatures and does not need to be water-cooled. This elimin... | 01/18/2000 |
| 5877394 | Method for treating waste containing stainless steel 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 the furnace. Based on the assessment, a predetermined amou... | 03/02/1999 |
| 5839647 | Welding clamp for pipe fittings Weldolets or threadolet type fittings are welded onto pipe while being clamped in position with a clamp assembly that includes a threaded bolt, a wing nut, a positioning star with tapered arms which can slide along the axis of the bolt, and a tapered swiv... | 11/24/1998 |
| 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 the furnace. Based on the assessment, a predetermined amou... | 03/24/1998 |
| 5529809 | Method and apparatus for spraying molten materials A metal spray apparatus is provided with a supersonic nozzle. Molten metal is injected into a gas stream flowing through the nozzle under pressure. By varying the pressure of the injected metal, the droplet can be made in various selected sizes with each ... | 06/25/1996 |
| 5494376 | Method and apparatus for controlling in situ waste remediation An in situ waste treatment system for contaminated soil employs a high temperature energy probe which is lowered into a borehole casing that has been inserted into the contaminated soil. The energy probe is activated and then melts surrounding region of t... | 02/27/1996 |
| 5484244 | Self-locking threaded fasteners A threaded fastener with a shape memory alloy (SMA) coatings on its threads is disclosed. The fastener has special usefulness in high temperature applications where high reliability is important. The SMA coated fastener is threaded into or onto a mating t... | 01/16/1996 |
| 5459811 | Metal spray apparatus with a U-shaped electric inlet gas heater and a one-piece electric heater surrounding a nozzle An electrically heated metal spray apparatus is provided with a supersonic nozzle. Molten metal is injected into a gas stream flowing through the nozzle under pressure. By varying the pressure of the injected metal, the droplet can be made in various sele... | 10/17/1995 |
