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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 8153004 | Grease trap with detachable residue interceptor An apparatus and method to separate grease and solids from wastewater before reaching the sewers using a grease trap, wherein said grease trap comprises a detachable residue trap reducing turbulence and including a mesh which efficiently trap solid particles from th... | 04/10/2012 |
| 7534344 | Upflow filtration and method apparatus for stormwater treatment An upflow stormwater filter has horizontally aligned filter media to provide a high throughput for treatment of contaminated water, longer life to filter media, and without material head drop. ... | 05/19/2009 |
| 7410569 | Filtration system for metalworking fluids A filtration system for metalworking fluids has panel filter elements arranged in cells in which the filter frames and panels are approximately parallel to one another. The filter frames are disposed such that the filter surfaces are oriented at an acute angle with ... | 08/12/2008 |
| 7331472 | Method and apparatus for separation of a mixture of non-miscible liquids A tank has an inlet opening mounted at an end wall at the beginning of an elongated horizontal path for supplying a mixture to be separated, and two outlet openings mounted at the end of the elongated horizontal path for separately draining the separated liquids. An... | 02/19/2008 |
| 7328809 | Solvent extraction method and apparatus A weir assembly for use with a mixer-settler for liquid-liquid extraction includes in one embodiment an organic weir having an inlet opening below the free surface of the organic phase liquid and a vertically-adjustable front wall allowing adjustments in the positio... | 02/12/2008 |
| 7303085 | Method and apparatus for purifying mixtures of oil and water An apparatus and method for separating oil and particulate contaminants from pump-driven aqueous fluid contaminated with emulsified oils, free oils, particulate matter, suspended solids, and other contaminants in which the contaminated fluids are introduced into a c... | 12/04/2007 |
| 7300590 | Method and apparatus for separating oil and debris from water run-off A drainage system for separating oil and debris from water run-off wherein a chamber in the path of flow of the run-off includes a downwardly inclined screen and a debris-collecting fence beneath the screen to maintain separation between the debris and water; and an... | 11/27/2007 |
| 7300588 | Wastewater separator and method of using same A method for pretreating a wastewater stream containing grease and food particles before the stream enters a sewer includes the steps of directing said wastewater stream to a separation area; directing said wastewater stream along a preferred flow path within said s... | 11/27/2007 |
| 7297266 | Apparatus for separating particulates from a fluid stream A screen apparatus for improved separation of particulates from a fluid stream. The screen is configured and arranged to filter relatively large particulates from the fluid stream as the fluid stream passes from a storage chamber of the tank to a tank outlet. The sc... | 11/20/2007 |
| 7297265 | Backwash strainer having a cyclonic flow mechanism A backwash strainer is equipped with a mechanism for enhancing performance of a backwash operation by imparting a cyclonic flow to liquid to be filtered. The backwash strainer includes a generally cylindrical filter element that defines an interior chamber having an... | 11/20/2007 |
| 7294256 | Storm water filter system A storm water filter system for filtering storm water being fed into an in-ground well includes a housing having an inlet and an outlet, with the outlet being connected to an in-ground recharge well. A plurality of open chambers are formed in the housing. An inlet f... | 11/13/2007 |
| 7285211 | Process and system for separating solids from combined sewer overflows A retention treatment basin system and method 10 that handles an influent of combined wastewater and sewer overflows. The influent includes floatable 12 and settlable solids 14. The basin includes a ceiling 16. The retention treatment bas... | 10/23/2007 |
| 7282143 | Septic tank A septic tank includes a chamber, an inlet through which waste water enters the chamber, an outlet, and an outlet pipe mounted to the outlet. At least one partitioning member is mounted in the chamber and separates the chamber into at least a first subchamber adjace... | 10/16/2007 |
| 7276154 | Settling grid separator A settling grid separator apparatus and method of use which provides deep dehydration of high flow rate sludge in an environmentally friendly and energy efficient manner. The apparatus and method comprise and utilize an efficient mixing of the sludge with a floccula... | 10/02/2007 |
| 7223348 | Method and apparatus for separation of a mixture of non-miscible liquids The present invention provides a new and improved method and apparatus for separating a disperse mixture of two non-miscible liquids to increase the separation extent within less time required as per usual. The proposed method includes the steps of providing a tank ... | 05/29/2007 |
| 7169303 | Sorbent reactor for extracorporeal blood treatment systems, peritoneal dialysis systems, and other body fluid treatment systems Systems and methods for extracorporeal processing of blood or other body fluid for the treatment of conditions, such as sepsis, autoimmune disease, or toxemia related to kidney failure, liver failure, or drug overdose are provided. In an extracorporeal treatment sys... | 01/30/2007 |
| 7138048 | Apparatus and method for the removal of solids and floatables from a wastewater stream An apparatus for removing particulates from a wastewater stream includes a chamber having a wastewater inlet and wastewater outlet which promotes a generally horizontal wastewater flow. A grating is provided in the chamber between the wastewater inlet and the wastew... | 11/21/2006 |
| 7108139 | Plastic extruded center tube profile and method of manufacture A filter for a fluid system includes a housing having an interior cavity. A filter media is disposed in the housing and defines a central opening. A center tube is arranged within the central opening and includes a plurality of helical fins extending radially outwar... | 09/19/2006 |
| 7094337 | Overflow chamber An overflow chamber (2) is provided for use in a combined sewer overflow. An inlet (12) and an outlet (14) open into the chamber (2) below a screen (20), and an overflow outlet (15) opens into the chamber above the screen. B... | 08/22/2006 |
| 7083721 | Stormdrain curb-inlet multi-stage filtration-unit A hydraulic-permeation type environmental water-runoff filtration-system applicable to street curb-inlet type drainage-chambers, which generally cooperatively interconnect with street and parking-lot drains. The BLUEBAY-BMP™ pollution-trap provides advantage of co... | 08/01/2006 |
| 7052605 | Device for purifying liquids A device for cleaning liquids, in particular edible oils, by means of a filter in a filter housing, the filter being connected downstream of a pump, and a motor for driving the pump, which has a rotor having a rotor disc with vanes in an immersion housing being prov... | 05/30/2006 |
| 7048851 | Device for filtering diesel fuel that is intended to supply a diesel engine and a diesel fuel supply line comprising one such device A device for filtration of gas-oil intended to supply a diesel engine comprises an electric heating unit which includes a casing internally defining a chamber for heating the gas-oil to be filtered, a filtration unit which includes a casing internally defining a cha... | 05/23/2006 |
| 7033496 | Water clarification system with weir A casing surrounds a horizontal axis to define a cavity. The cavity has a top, a bottom, and axially front and rear ends. The casing is configured to conduct a mixture of a liquid and debris through the cavity from the front end to the rear end. Front and rear walls... | 04/25/2006 |
| 7022243 | Apparatus for treating storm water A separation tank having an inlet and an outlet and forming a low flow path and a high flow path, both conveying water from the inlet to the outlet. At normal, low flows, the water enters the inlet and passes through the low flow path having treatment chambers to re... | 04/04/2006 |
| 7018528 | Portable purifying system A portable purifying system for improved filtering and/or separating of cleaning solutions such as solvents, particularly those used in parts washers. The purifying system utilizes a removable reservoir to provide a smaller reservoir within a larger reservoir such a... | 03/28/2006 |
| 7011743 | Water pollution trap with water flow baffles A chamber having an inlet for receiving polluted storm-water runoff and an outlet for the storm water to flow out. Within the chamber are one or more baffles forming gaps and having apertures. The gaps define a longer water flow route through the chamber and the ape... | 03/14/2006 |
| 6994783 | Water pollution trap with inlet basket A chamber having an inlet for receiving polluted storm-water runoff and an outlet for the storm water to flow out. Within the chamber is a screen that is elevated for separating and suspending miscellaneous debris such as vegetative matter, paper, and plastic, and t... | 02/07/2006 |
| 6974537 | Diesel fuel purifier The diesel purifier produces a fuel of high purity that meets the full ignition requirements at the combustion chamber of the engine. The purifier comprises a purification chamber encapsulated by an external body of the unit wherein, the purification chamber has a b... | 12/13/2005 |
| 6960295 | Water kettle, and particle catcher/filter assembly for said kettle A water kettle having a receptacle (1) with an inner space (2) for receiving water (3) therein and with a pouring spout (4) for pouring water from the inner space (2). The water kettle is further provided with a particle catcher ( | 11/01/2005 |
| 6953527 | Fuel tank with water trap A fuel tank for use with small internal combustion engines, the fuel tank having an inlet and an outlet and storing a quantity of fuel therein. A hydrophobic barrier is positioned within the fuel tank in flow communication with the outlet, and permits the passage of... | 10/11/2005 |
| 6951607 | Mobile pollution trap and method A mobile chamber has an inlet for receiving polluted water and an outlet for pollution-free water to flow out. A mobile trap operating system includes an output pump, an input pump, a pollution tank, and a liquid tank, all operably connected to the chamber. Within t... | 10/04/2005 |
| 6942796 | Filter device for filtering a liquid A filter unit is disclosed suitable for use in a filter housing. The filter unit comprises superposed and spaced-apart inclined lamellar structures, preferably in the form of hollow truncated cones, each having a lower end side opposite an upper end side and a passa... | 09/13/2005 |
| 6939464 | Fuel-water separator unit with parallel flow A filter assembly includes a housing and an inner post with a fluid inlet passage extending in the housing. An outer post surrounds the inner post to define a fluid outlet passage. A filter cartridge is received around the inner post and the outer post. The filter c... | 09/06/2005 |
| 6939461 | Water pollution trap with oil segregator/collector A chamber has an inlet for receiving polluted storm-water runoff and an outlet for the storm water to flow out. Within the chamber is a collection reservoir having an adjustable weir with a skimming edge for skimming off floating matter such as motor oil, other hydr... | 09/06/2005 |
| 6936163 | Water pollution trap with clay collector A chamber having an inlet for receiving polluted storm-water runoff and an outlet for the storm water to flow out. Within the chamber is a pivotal filter that catches clay during typical storm flows and pivots out of the way during higher flows. In alternative embod... | 08/30/2005 |
| 6902669 | Filter cartridge with floating seal A filter cartridge includes a filter element that is adapted to filter fluid. The filter element defines a center post cavity constructed and arranged to receive a center post. The filter element has a first end and a second end. A first end plate is attached to the... | 06/07/2005 |
| 6899808 | System for processing polluted water A system for processing polluted water utilizing a first container having an inlet for receiving polluted water and a third container having an outlet for treated water. A second container is also employed and lies between the first container and a third container. ... | 05/31/2005 |
| 6878270 | Low cost grease removal system A low cost oil, grease removal assembly includes a rotomolded plastic container having an inlet and an outlet; a rotomolded plastic basket support located at the inlet inside the container; a rotomolded plastic outlet baffle located in the container at the outlet; a... | 04/12/2005 |
| 6866778 | Tank for draining a granular material/liquid mixture A drainage tank for granular material/liquid mixture includes a low part and a high part provided with a lid. A device for separating the liquid and the granular material is arranged in the low part. A device for evacuating excess liquid is arranged in the high part... | 03/15/2005 |
| 6849176 | Grease separator for kitchen sinks and other applications An oil/grease separator separates a lighter liquid from a mixture of the heavier liquid and a lighter liquid. A housing has an inner volume, an inlet to receive influent flow, an outlet to discharge the heavier liquid, which defines a static liquid level, and an out... | 02/01/2005 |
