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 |
| 8021543 | Wastewater treatment system A wastewater treatment system for treating excess wastewater from a sewer system includes a container having first and second portions adapted to receive excess wastewater from the sewer system, and a generally horizontally oriented screen arrangement disposed in th... | 09/20/2011 |
| 8017004 | Storm drain and filter system A filter system for a storm drain having a bottom, side walls, and an outlet formed in the side wall. The filter system includes a main section having an array of openings formed therein for permitting water to flow through the filter. The main section is configured... | 09/13/2011 |
| 7985335 | Low profile catch basin filter A catch basin configured to filter water by way of a matrix filter and a filter pouch. If the matrix filter should become clogged, a bypass weir provides means of bypassing the matrix filter to prevent the catch basin from clogging. ... | 07/26/2011 |
| 7837868 | Flow control structure and related media filtration system A stormwater filtration system includes a stormwater containment structure including a bottom surface, an inlet that receives stormwater and an outlet through which filtered stormwater exits the stormwater containment structure. A flow structure is at the bottom sur... | 11/23/2010 |
| 7658841 | Oil-water separator An oil-water separator for use in a trench, which surrounds an oilfield. The separator is positioned in the ground such that an inlet conduit extends at about the same level as the bottom of the trench. The trench water is admitted into the housing, where it contact... | 02/09/2010 |
| 7547389 | Bottom seal A bottom seal, at the lower end of a step screen, is adapted to convey solid particles and other objects positioned in flowing water. The step screen has a grating including alternately fixed and movable lamellar rods with intermediate gaps to allow the water to pas... | 06/16/2009 |
| 7517450 | Pre-assembled flow control structured and related media filtration system A stormwater filtration system includes a stormwater containment structure including a concrete floor and a pre-assembled flow structure embedded in the concrete floor. The pre-assembled flow structure includes an inlet compartment housing, an outlet compartment hou... | 04/14/2009 |
| 7494585 | Large area catch basin filter The present invention relates to an apparatus for maximizing the blockage of fluid borne solid materials from passage through a catch basin into the downstream parts of a fluid flow channel, with minimum impact on the volume and rate of fluid passing through the cha... | 02/24/2009 |
| 7468129 | Oil-water separator An oil-water separator for use in a trench, which surrounds an oilfield. The separator is positioned in the ground such that an inlet conduit extends at about the same level as the bottom of the trench. The trench water is admitted into the housing, where it contact... | 12/23/2008 |
| 7416658 | Elliptical motion drive device for a step screen Disclosed herein is an elliptical motion drive device for use in a step screen. The elliptical motion drive device comprises first and second eccentric wheels coupled to a single drive shaft to be eccentrically positioned to each other. Upon rotation of the drive sh... | 08/26/2008 |
| 7364652 | Screening apparatus Screening apparatus (101,901) for use at an overflow weir (301, 902) in a sewerage system. The apparatus comprises a continuous moving screen band (201, 902) and a band cleaning mechanism (608). A first portion (801) of the screen ... | 04/29/2008 |
| 7326335 | Apparatus for removing solids from water in canal There is disclosed an apparatus for removing solids from water in a canal during or immediately after a rainstorm. The apparatus includes a plurality of filters and a carrier. The filters filter the solids from the water while moving in and taking impact from the wa... | 02/05/2008 |
| 7303687 | Gutter lining method and insert apparatus incorporating porous non-woven fiber matting An insert apparatus for placement in a rain gutter includes a porous insert body including a plurality of randomly arranged filaments attached to one another to form a mat. The insert apparatus is shaped to fit within an inside channel of a rain gutter. Optionally, ... | 12/04/2007 |
| 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 |
| 7282142 | Fluid strainer assembly A fluid strainer device is disclosed. The device includes a housing which defines an open chamber, the chamber having both at least one fluid input port and at least one fluid outlet port. A plurality of spaced strainer baskets are disposed within the chamber. Each ... | 10/16/2007 |
| 7270756 | Large area catch basin filter The present invention relates to an apparatus for maximizing the blockage of fluid borne solid materials from passage through a catch basin into the downstream parts of a fluid flow channel, with minimum impact on the volume and rate of fluid passing through the cha... | 09/18/2007 |
| 7270747 | Storm water drain system An in-line storm water drain system and a filter basket for a storm water drain system are provided in which the storm water drain system has a housing having an inlet and outlet thereinto and interior walls forming a plurality of chambers therein. The filter basket... | 09/18/2007 |
| 7183012 | Structure having pores, magnetic recording medium, and method of manufacturing same The invention provides a magnetic recording medium and a method of manufacturing the magnetic recording medium, in which a high density and good storage stability can be achieved by giving anisotropy in shape to a magnetic substance. A plan shape of the magnetic sub... | 02/27/2007 |
| 7160440 | Storm water separator system A storm water separator system having side walls constructed from sheet piling to enable installation within a small footprint and in poor soil conditions. The separator system has an upper bypass chamber and a lower treatment chamber with a diffuser directing inflo... | 01/09/2007 |
| 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 |
| 7128832 | Filter pit A filter pit is disclosed. The pit has an inlet and an outlet adjacent a base of the pit. A primary, a secondary and a tertiary filter are located between the inlet and outlet and the tertiary filter is supported above the base and is able to dry out when the flow o... | 10/31/2006 |
| 7125486 | Device for removing small solids from water in canal There is disclosed a device for removing small solids from water. The device includes an axle and a plurality of rotational filtering units installed on the axle. While rushed and hence rotated by water and small solids, the rotational filtering units filter the sma... | 10/24/2006 |
| 7105086 | Storm drain capture and containment device A storm drain system (10) contained in the ground (36) contains a standpipe (12) having a bottom section (18) having perforations (20) where a porous pavement (22) surrounds the top portion of the standpipe (12), wher... | 09/12/2006 |
| 7096627 | Rain head A rain head is disclosed having three filters through which water entering an inlet to the rain head must pass before passing out through an outlet from the rain head. The filters remove successively smaller particles from the water. ... | 08/29/2006 |
| 7086405 | Screenings washer A screenings washer having a hopper, a grinder downstream of the hopper, and a washer downstream of the grinder. The washer includes an auger rotor that receives the screenings ground by the grinder, a spray wash system that sprays a wash fluid directly onto a porti... | 08/08/2006 |
| 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 |
| 7080650 | Screenings washer A screenings washer having a hopper, a grinder downstream of the hopper, and a washer downstream of the grinder. The washer includes an auger rotor that receives the screenings ground by the grinder, a spray wash system that sprays a wash fluid directly onto a porti... | 07/25/2006 |
| 7081171 | Screenings washer A screenings washer having a hopper, a grinder downstream of the hopper, and a washer downstream of the grinder. The washer includes an auger rotor that receives the screenings ground by the grinder, a spray wash system that sprays a wash fluid directly onto a porti... | 07/25/2006 |
| 7073433 | Auger dewatering system A system for transporting and dewatering solids in a fluid system. An auger is used to transport solids and provide first stage compaction. A dewatering plate having a restricted opening provides second stage compaction and dewatering. The auger maybe be shafted or ... | 07/11/2006 |
| 7048850 | Water screen A traveling water screen comprising an endless foraminous belt with flights. The foraminous belt forms a water screen extending from a lower end in a flowing stream to an upper end above the surface of the stream. The stream flows through openings in the foraminous ... | 05/23/2006 |
| 7040838 | High capacity catch basin filtration system with adjustable deflector ring A catch basin filtration system having a filter body dimension to fit within a drain inlet forming a trough or reservoir obstructing at least a portion of the inlet. The filter body is supported by a filter body support dimensioned to cooperatively engage with the i... | 05/09/2006 |
| 7025076 | Rainwater recovery system A system and method for restoring the natural water cycle by reducing stormwater runoff and addressing issues affecting groundwater supply. In one embodiment of the invention, the system comprises a roof washer component, cistern component, pump, and manufactured dr... | 04/11/2006 |
| 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 |
| 7001527 | Stormwater treatment apparatus and method A liquid purification and separation apparatus for separation of pollutants in stormwater runoff is disclosed. This apparatus utilizes gravitational separation and tortuosity, resulting from a plurality of baffles both perpendicular to and oblique to the primary wat... | 02/21/2006 |
| 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 |
| 6979148 | Golf course green storm water filter A method of making a golf course green drainage system and the system made from the process which includes forming a drainage system field in a golf course green and coupling a drain pipe to the drain field for channeling water collected from the drain field. The pr... | 12/27/2005 |
| 6979403 | Grease interceptor (trap) and servicing method A grease trap and management tank is disclosed herein. The trap has two compartments, a forward and rear compartment separated by two baffles so that grease and oils may rise and solids and sludge settle out and not be introduced into a sewer line. An ultra sonic mo... | 12/27/2005 |
| 6964135 | Rain gutter clean out device A rain gutter clean out device has a gutter section with a bottom wall opening and a slidable cover which in one position overlies the opening and in another position uncovers the opening to allow gutter debris to be removed there through. ... | 11/15/2005 |
| 6953529 | Apparatus and method of particulate removal from liquids A method and apparatus for particulate removal from liquids is disclosed and includes a Coanda tilted wire wedge wire screen in combination with a liquid-flow velocity control orifice mounted within a cylindrical air-tight vessel that can be operated under pressure.... | 10/11/2005 |
| 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 |
