Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 7810988 | Fluid mixer for mixing fluids at an accurate mixing ratio A fluid mixer is provided which can supply a fixed amount of fluid in each of supply lines to a mixing line all the time while maintaining a highly accurate mixing ratio even if a pressure on the downstream side of a back pressure valve of the mixing line is fluctua... | 10/12/2010 |
| 7341634 | Apparatus for and method of processing substrate A workpiece is processed uniformly, e.g., a uniform plated film is formed on a workpiece, by a processing liquid, e.g., a plating solution, which is maintained in an optimum state while minimizing the amount of the processing liquid to be used. An apparatus for proc... | 03/11/2008 |
| 7225946 | Constant pressure fluid-dispensing pumping system and method An improved microprocessor-controlled dual piston-pump viscous fluid dispensing system as for dispensing uniform sealing beads and the like (as well as other types of uniform deposits), wherein the pressure throughout the fluid path is maintained constant including ... | 06/05/2007 |
| 7147364 | Mixer and liquid analyzer provided with same The invention provides a mixer capable of mixing two kinds of liquids with each other while varying a mixing ratio in a wide range of the flow rates thereof by causing the two liquids in trace amounts to come into contact with each other, or a mixer capable of mixin... | 12/12/2006 |
| 7140405 | Mixing apparatus The present invention provides an apparatus adapted to dilute pre-measured raw chemical material. The apparatus includes a tank selectively fluidly connectable to a source of pressurized diluent by a passageway and a first pump selectively fluidly connectable to the... | 11/28/2006 |
| 7029164 | Automated system and process for the preparation of a high viscosity fluid formulation An automated fluid formulating system for use in small scale laboratory operations. The system utilizes a computer to provide precise control over the measurement of ingredients and the entire formulating process. The novel feature of this invention is that it can p... | 04/18/2006 |
| 6994464 | Control system and method for continuous mixing of slurry with removal of entrained bubbles The present invention comprises a control system and method for the continuous mixing of slurry while removing entrained bubbles. The control system for continuous mixing of slurry with removal of entrained bubbles comprises a power and fluid rate control, wherein t... | 02/07/2006 |
| 6921193 | Chemical concentration control device for semiconductor processing apparatus A chemical concentration control device for a semiconductor processing apparatus being capable of keeping processing chemicals at constant concentrations, and of maintaining the liquid level required for processing is provided. A semiconductor processing apparatus i... | 07/26/2005 |
| 6852473 | Anti-reflective coating conformality control A method for forming an anti-reflective coating on a semiconductor substrate, including providing a first vessel containing an anti-reflective coating component and a second vessel containing a solvent. The anti-reflective coating component from the first vessel and... | 02/08/2005 |
| 6767124 | Slurry mixing feeder and slurry mixing and feeding method A mixing feeder is disclosed for a slurry that contains liquids at a desired mixing ratio. The liquids include at least a dispersion of fine abrasive particles and a solution of an additive. The slurry mixing feeder has suction ports for sucking the liquids from a r... | 07/27/2004 |
| 6764212 | Chemical supply system A chemical supply system comprises, as principal elements, a chemical storage tank in which a liquid chemical for cleaning is stored in the state of its formulated concentrate, a chemical supply apparatus connected to the chemical storage tank for positively perform... | 07/20/2004 |
| 6749330 | Cement mixing system for oil well cementing A powder mixing system and mixer for mixing cement used in cementing oil wells or other similar dry powder mixtures. The mixer is provided with a central recirculation jet and with annularly located alternating recirculation and mix water jets that discharge into th... | 06/15/2004 |
| 6592246 | Method and installation for forming and maintaining a slurry A method and installation for forming and maintaining a slurry are disclosed. The method withdraws a slurry from a reservoir and directs it at a heap of solid material from which the slurry is drained into the reservoir, the slurry containing additional s... | 07/15/2003 |
| 6588929 | Portable mixing and dispensing apparatus and method A portable mixing and dispensing apparatus, especially useful for spraying, including a fluid conducting, mixing and supporting framework for the hydraulic unit in the apparatus. The framework includes spaced end plates and a conduit assembly. Each end pl... | 07/08/2003 |
| 6533449 | Apparatus and process for the continuous preparation of a fluid, utilizing a fluid recycling means including a buffer An apparatus and process for the continuous preparation of a mixture of two or more fluids, such as paints, enamels and dyes, to produce a resulting fluid having desired pre-defined physical properties, such as a particular color, opacity, hue, saturation... | 03/18/2003 |
| 6353053 | Method and device for producing polyurethanes containing filling materials The present invention is directed to a process and corresponding device for incorporating expanded graphite in a gentle manner into a polyurethane reactive mixture and, on the other hand, processes and corresponding means for reducing or preventing sedime... | 03/05/2002 |
| 6290384 | Apparatus for producing liquid mixture having predetermined concentration of a specific component A method and apparatus for producing a liquid mixture in which mixture components are mixed to produce a product stream having a predetermined connection of a specified component. This mixing occurs within a fluidic network designed such that the componen... | 09/18/2001 |
| 6261486 | Process and device for the production of polyurethane moldings by the shot process For the production of polyurethane moldings by the shot process from isocyanate and polyol components, the production is improved in that, in addition to the conditioning already known for the line system, at least one of the commercially available but mo... | 07/17/2001 |
| 6254269 | Dosing device for mixing in a continuous process a flowing primary liquid with one or more added secondary liquids The present invention relates to a dosing device, or mixing device for mixing, in a continuous process, a flowing primary liquid with one or more added secondary liquids of a smaller quantity for obtaining a flowing liquid mixture at a permanent uniform m... | 07/03/2001 |
| 6247838 | Method for producing a liquid mixture having a predetermined concentration of a specified component A method and apparatus for producing a liquid mixture in which mixture components are mixed to produce a product stream having a predetermined concentration of a specified component. This mixing occurs within a fluidic network designed such that the compo... | 06/19/2001 |
| 6059880 | Coating apparatus A coating apparatus according to the invention comprises a spin chuck for holding a substrate, resist solution tanks which contain a primary resist solution, a thinner tank which contains thinner, a confluence valve communicating with the thinner tank and... | 05/09/2000 |
| 6048089 | Mixing apparatus for maintaining a pressure differential over varying feed rates The invention relates to a mixing apparatus for maintaining a pressure differential over varying feed rates by mixing a flow of sludge with a flocculant. The mixing apparatus includes a monitor for monitoring the pressure differential across the apparatus... | 04/11/2000 |
| 6007235 | Sampling and diluting system for particle size distribution measurement A system is disclosed for the extraction of a representative sample of a processed medium, flowing in a process stream under a first pressure force, and the delivery of the extracted representative sample to a mixing chamber along with a diluent medium. T... | 12/28/1999 |
| 5993054 | System and method for continuously and simultaneously injecting two or more additives into a main stream of oleaginous liquid Additives are blended with a stream of liquid, for example of diesel fuel, by injecting at least two different additive compositions into the stream, and adjusting the rates of injection and the relative proportions of the injected additive compositions. ... | 11/30/1999 |
| 5980836 | Apparatus for preparing low-concentration polyaluminosilicate microgels An improved method and apparatus for preparing low-concentration polyaluminosilicate microgels from a water soluble silicate and a strong acid in which the silicate and acid are mixed at a rate to produce a Reynolds number of at least 4000, the mixture is... | 11/09/1999 |
| 5968268 | Coating apparatus and coating method Disclosed is a coating apparatus, comprising: a first stream-combining valve communicating with each of a first solvent tank and a resist solution tank, a first pump for supplying an initial resist solution from the resist solution tank toward said first ... | 10/19/1999 |
| 5935332 | Plant for preparing and feeding a coating composition to a coating head for paper or the like A plant for preparing and feeding a coating composition to a coating head for paper or the like includes a plurality of hoppers, each hopper being intended to receive and deliver one ingredient of the composition. The plant further includes a premixer tan... | 08/10/1999 |
| 5924794 | Chemical blending system with titrator control A chemical blending system for blending two or more constituent chemicals to a desired concentration. One embodiment of the system includes a mix tank, a recirculation line having an inlet and an outlet in the tank, and a pump in the recirculation line fo... | 07/20/1999 |
| 5868327 | Mixing and dispensing apparatus and method The apparatus produces batches of mixture in first and second mixing chambers containing liquid, each chamber having a liquid port and a mixer. A valve, communicating with the liquid ports, controls liquid flow relative to each chamber, and a main pump an... | 02/09/1999 |
| 5823669 | Method for blending diverse blowing agents An apparatus and method for continuously and accurately blending a plurality of diverse, normally gaseous or volatile liquid components, preferably two or three, at low pressures. In a preferred embodiment, and apparatus blends a first stream of volatile ... | 10/20/1998 |
| 5599100 | Multi-phase fluids for a hydraulic system A hydraulic system employing multi-phase hydraulic fluids in which a first phase hydraulic fluid has its properties modified by the addition of a second phase hydraulic fluid is described. Effective hydraulic actuation is achieved in a single system under... | 02/04/1997 |
| 5522660 | Apparatus for blending and controlling the concentration of a liquid chemical in a diluent liquid Apparatus blending a diluent liquid, i.e., DI water, with a chemical concentrate, a flow duct and mixing tank forming a closed loop for mixing; a pair of flow duct portions each having a conductivity sensor inductively sensing chemical concentration in th... | 06/04/1996 |
| 5505539 | Method and apparatus for proportioning and mixing non-compressible and compressible fluids The present invention is directed to methods and apparatus for effectively proportioning a mixture of compressible and non-compressible fluids, wherein the resulting mixture has an almost constant density. The present invention is particularly useful for ... | 04/09/1996 |
| 5502685 | Continuous batch mix sprayer The invention provides a chemical mixture device that avoids the mixing of large batches of chemicals and provides a continuous and precisely mixed mixture. For mixing water and a chemical, a large water tank and a chemical tank supply water and chemicals... | 03/26/1996 |
| 5462352 | Apparatus and method for homogeneous mixing of fluid components to form a mixed product having a more accurately set mixture ratio The apparatus for homogeneous mixing of fluid components includes a feed tank (B1) for a liquid component having an overflow weir dividing the feed tank (B1) into a first chamber and a second chamber; another feed tank (B2) for another fluid component; a ... | 10/31/1995 |
| 5403089 | Method and apparatus for metering and mixing non-compressible and compressible fluids The present invention is directed to methods and apparatus for effectively proportionating a mixture of compressible and non-compressible fluids and in particular, the present invention is directed to apparatus and methods for forming a coating compositio... | 04/04/1995 |
| 5372789 | Device for the production of a reaction mixture In devices for the production of a reaction mixture, which forms a foamed plastic, from at least two reaction components and a foaming agent, it is possible to determine the content of foaming agent in a reaction component mixed therewith in that an inter... | 12/13/1994 |
| 5372421 | Method of inverting, mixing, and activating polymers The inventive method inverts and activates polymer, and delivers it to an output at a relatively high concentration of polymer in an electrolyte fluid, such as water. The inversion and activation results from four steps: (1) premixing polymer and a diluen... | 12/13/1994 |
| 5340211 | Programmable apparatus and method for delivering microingredient feed additives by weight A method and apparatus whereby livestock and poultry are administered feed additives in their feed ration. The apparatus stores additive concentrates separately until just prior to use, then on demand dispenses the additive concentrates into one or more w... | 08/23/1994 |
| 5340210 | Apparatus for blending chemicals with a reversible multi-speed pump An apparatus for mixing or blending chemicals includes a dedicated pump for each type of chemical to be blended, such as one pump for water-based chemicals and another pump for oil-based chemicals. Each pump preferably operates in a fast speed when delive... | 08/23/1994 |
