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| Number | Title | Issue Date |
| 8057665 | Cold water tank and water treatment apparatus having the same Disclosed are a cold water tank and a water treatment apparatus. The cold water tank includes a tank body, a water inlet pipe provided at the tank body to convey water into the tank body, a water outlet pipe provided at the tank body to convey the water out of the t... | 11/15/2011 |
| 7955501 | Floating filter holder A system and method are disclosed for filtering liquid using a filter platform that is not rigidly affixed to a container containing the liquid to be filtered. The platform may be buoyant so that as liquid flows from one side of the platform, through a filter, and t... | 06/07/2011 |
| 7695615 | Filtering device The invention relates to a filtering device for liquid filters, mainly for potable water jug-type filters. The filtering device consists of a body filled with a filtering material and is provided with at least one outlet in the base of thereof, a lid having a water ... | 04/13/2010 |
| 7655140 | Automatic water drain for suction fuel water separators A fuel water separator system includes a fuel tank for storing fuel and a fuel water separator fluidly coupled to the fuel tank for separating water from the fuel. A fuel pump has a suction side that is fluidly coupled to the fuel water separator for pumping fuel fr... | 02/02/2010 |
| 7585409 | Multi-stage water purification device A multi-stage water purification device includes an untreated water compartment having an untreated water inlet and a treated water compartment formed from a resilient material. The compartments are segregated from one another. An outlet is in flow communication wit... | 09/08/2009 |
| 7578931 | Pressure release protection device for automatic ground cleaning vehicles The present invention teaches a pressure release protection device for automatic ground cleaning vehicles, comprising an air suction pipe, an airtight cover, an air relief valve, a spring, a filter screen, a filter screen holder, a crown bar, a floating ball, and a ... | 08/25/2009 |
| 7442293 | Oil/water separation apparatus for oil-containing mixture Oil adsorbent layers 4 and packed layers 5 are alternately laminated inside a treatment vessel 2, the oil adsorbent layers 4 comprise ten laminated flat sheets 4a composed of polypropylene, and gelled aluminum hydroxide 1... | 10/28/2008 |
| 7419591 | Filter cartridge with check valve protection A filter assembly is provided that includes a hood, a drain manifold, a filter disposed between the hood and the drain manifold, a drainage space that is disposed between and in fluid communication with both the filter medium and the drain manifold, a check valve th... | 09/02/2008 |
| 7364609 | Method and kit for use with standard pipe couplings to construct a de-aerator A kit for constructing a de-aerator for a fluid distribution system includes a gas concentrator adapted to be received in chamber of a T-coupling provided with the kit. A cap is provided that closes a cap connector integrally formed with the T-coupling. The cap supp... | 04/29/2008 |
| 7351330 | Iron and hydrogen sulfide removal apparatus An automated system controls operation of a filtration system. The filtration system includes an aeration tank and a filtration tank. The system includes a pressure sensor, an air pump, a bleed passage, and a pressure control. The pressure sensor measures a pressure... | 04/01/2008 |
| 7351344 | Sterile system and method for filtering biological or medical liquids, especially blood or blood constituents The invention relates to a sterile system and a method for filtering biological or medical liquids, especially blood or blood constituents. According to the filtering system and method, the sterile air already in the system is collected before the beginning of the f... | 04/01/2008 |
| 7334557 | Engine lubrication system for supplemental oil filtering and controller based activation of a prelubrication pump An engine lubrication system comprising a pump for supplying oil to an engine, a filter for purifying the oil and at least one sensor for discerning parameters of the engine lubrication system and generating signals indicative thereof. The engine lubrication system ... | 02/26/2008 |
| 7311208 | Environmentally friendly filter cartridge A filter cartridge which is environmentally friendly in that it is made up of components which are all incinerateable. The ends of a filter element are sealed using potting compound and plastic endcaps. The upper endcap, which is closed, has a pressure relief apertu... | 12/25/2007 |
| 7303683 | Microorganism-removing filter medium having high isoelectric material and low melt index binder A filter medium capable of removing microorganisms from a fluid such as water. The filter medium includes particles of activated carbon, particles of a substantially insoluble inorganic material having an isoelectric point greater than the fluid being filtered. A lo... | 12/04/2007 |
| 7287301 | Utility vacuum A utility vacuum that may be configured to employ a disposable bag or removable and reusable container for the collection of dirt and debris that are drawn into the utility vacuum. The utility vacuum may employ one or more movable legs that are movable between an ex... | 10/30/2007 |
| 7276169 | Method for filtering water in an aquarium, a water cultivation tank and similar water bonds, and corresponding filtering system A method for filtering the water of an aquarium, a water cultivation tank or similar water bonds, by means of a filtering system comprising a closed vessel and defining a chamber, a filtering body housed in the chamber, a circulation pump having a suction duct, comm... | 10/02/2007 |
| 7270745 | Liquid filtration apparatus embodying super-buoyant filtration particles Presented is a liquid filtering apparatus and method that overcomes the disadvantages encountered with prior bed filtration systems by providing a filtering apparatus that incorporates a super-buoyant filter medium having a specific gravity very substantially lower ... | 09/18/2007 |
| 7270746 | Water treatment system for water animal feeding facility A water treatment system includes a waste collection arrangement and a waste disposal arrangement. The waste collection arrangement is disposed in a pond for swirling the water to form a funnel-shaped water vortex so as to collect a waste contained in the water of t... | 09/18/2007 |
| 7250109 | Back-wash filter In the backflush filter (10) according to the invention, in which the flushing back of the filter inserts (15) which are received in several filter chambers takes place by means of flushing filtrate loaded by compressed air, the flush valve (35)... | 07/31/2007 |
| 7237980 | System for infiltrating and irrigating water into soil A soil infiltration irrigation system includes a plurality of water-permeable containers and a water-feeding pipeline communicating with each of the containers. The containers are provided with connectors for connecting to the water-feeding pipeline and are also pro... | 07/03/2007 |
| 7232518 | Filter device A filter device includes at least one filter unit (10), connectable to a hydraulic circuit (14), with at least one supply line (16), one discharge line (18), and at least one cooling unit (22). The cooling unit is connected to a se... | 06/19/2007 |
| 7214311 | Filter cartridge with check valve protection A filter assembly is provided that includes a hood, a drain manifold, a filter disposed between the hood and the drain manifold, a drainage space that is disposed between and in fluid communication with both the filter medium and the drain manifold, a check valve th... | 05/08/2007 |
| 7204930 | Water purification system and method An oxidation filtration system for cleaning groundwater, the system having an aeration tower and a filtration tank. Within the filtration tank is an upper chamber and a lower chamber. Contained within the lower chamber is a plurality of Styrofoam™ filter media. Se... | 04/17/2007 |
| 7198715 | Device for separating fluid mixtures A device for separating fluid mixtures, in particular for separating water from oil, includes a vacuum container (10) with several sub-chambers (26, 44, 40). At least one liquid constituent of the fluid mixture can be transported from the vacuum contai... | 04/03/2007 |
| 7186338 | Twist and lock filter housing A filter housing having radial sealing means is disclosed herein. Upper bosses and lower bosses can be used to attach the head to the sump for easy opening and closing the filter housing when replacing the filter cartridge. The filter housing of the present inventio... | 03/06/2007 |
| 7183117 | Apparatus for measuring characteristics of chemical solution, chemical solution supply apparatus, and method for measuring concentration of chemical solution A supply apparatus for preparing a mixed chemical solution of a predetermined mixing ratio at a low cost and for supplying the mixed chemical solution stably. The supply apparatus includes a measuring apparatus located on an intermediate portion of a flow channel th... | 02/27/2007 |
| 7166210 | Oil filter cartridge The present invention relates to small vehicles such as lawn and garden tractors and more specifically to an oil filter cartridge or assembly usable with the transmissions of such vehicles. The cartridge is comprised of a filtering element, a strainer element and a ... | 01/23/2007 |
| 7159731 | Air purge valve and filter pump cover employing same A filter pump cover according to the invention comprises a filter cap, an air purge valve, and a filter cap retainer. An air purge valve according to the invention is comprised of a valve cap, a screw-threaded portion, and a valve stem having one or more outward-fac... | 01/09/2007 |
| 7157011 | Vent for leach field aeration Pressurized air is flowed from a wastewater leach field conduit into and through the surrounding soil, and then to atmosphere above the soil surface, to enhance biochemical treatment of the wastewater. A vent, such as a perforated pipe or a region of porous media, b... | 01/02/2007 |
| 7156239 | Filter unit for freezable liquids, particularly for a metering unit of an exhaust gas treatment device A filter unit for liquids undergoing freezing for a metering unit of an exhaust gas treatment unit has a housing having an outer member and a lid member. At least one filter insert is arranged in the housing. An elastically deformable casing part is provided that su... | 01/02/2007 |
| 7135108 | Water purifyer with extruded body having circumferentially arranged tubes A water purifying apparatus is constructed having a plurality of vertical, water-carrying tubes circumferentially arranged so as to form a hollow central region enclosed by the tubes. A top cap and bottom cap are configured so as to channel water through the tubes i... | 11/14/2006 |
| 7122116 | Water treatment system A water treatment system that includes a water storage tank fluidly connected to a water source through an inlet, a chlorination device fluidly connected to the water storage tank and the inlet, a media filter vessel at least partially contained within the water sto... | 10/17/2006 |
| 7090773 | Coaxial full-flow and bypass oil filter An improved combination full flow bypass oil filter is presented where the output of the bypass filter is obtained by non-venturi means and the extremely clean bypass filter output is measurable at all engine oil pressures. The bypass filter output is not blended wi... | 08/15/2006 |
| 7056432 | Tank mounted oil filter assembly The present invention relates to small vehicles such as lawn and garden tractors and more specifically to an oil filter assembly used with the transmissions of such vehicles. The filter assembly is housed within the transmission case to reduce mounting brackets outs... | 06/06/2006 |
| 7037432 | Buoyant media flotation A clarification system for fluids in which particles are separated from the fluid by flotation and in which the buoyant media inducing the flotation is recycled. Flotation can be assisted by a flotation assistance device, such as dissolved air flotation. ... | 05/02/2006 |
| 7022225 | Water ozonation mixing and degassing system An apparatus and system for mixing and separating ozonated water is provided. The apparatus is especially useful as a component of a system for cycling sanitizing ozonated water to a body of water such as a pool, spa or pond. The apparatus generally includes a separ... | 04/04/2006 |
| 6998056 | Process and device for aerating a liquid with gas Apparatus and process for aerating a liquid with gas, the apparatus comprising a pressure vessel including a lower section containing the liquid and an upper section containing a volume of the gas. A pressure connection in the upper section of the pressure vessel ad... | 02/14/2006 |
| 6977006 | Keyed system for connection of filter cartridge to filter holder Embodiments of a key system for filters and their connecting heads/holders are shown. The filter cartridge and its holder each have a keyed surface, one being a protruding “key” and one being a recessed “lock”. Cooperation of these keyed surfaces is required... | 12/20/2005 |
| 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 |
| 6957742 | Vented trap A swimming pool debris trap having an externally operable venting mechanism for reducing pressure or vacuum in the trap. ... | 10/25/2005 |
