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| Number | Title | Issue Date |
| 8043026 | Flow control system for a detention pond with tapered plunger An application for a flow control system includes a tapered plunger situated within an conduit. The conduit is open to a downstream drainage system. The tapered plunger is buoyant, assisted by one or more floats attached such that, when the water level around the fl... | 10/25/2011 |
| 8033753 | Automatic flooding protection for underground ventilation ducts Embodiments are described for preventing downward flow of substantial surface water into an underground ventilation duct communicating upwardly to a ground surface opening. The embodiments comprise a support having a top opening and an opening in a lower portion abo... | 10/11/2011 |
| 7985035 | Flow control system for a detention pond An application for a flow control system includes a movable plunger held within a stationary riser, the stationary riser being in fluid communication with a drainage system. The movable plunger is buoyant, assisted by one or more attached floats such that, when the ... | 07/26/2011 |
| 7922422 | Low profile buoyancy adjustment controller and valve system for diver's vest A buoyancy adjustment device utilizes an inflation valve connected between the diver's breathing gas supply and a compartment to admit gas into the compartment to increase the diver's buoyancy. An exhaust valve connects between the compartment and the outside of the... | 04/12/2011 |
| 7762741 | Flow control system for a detention pond An application for a flow control system includes a movable riser in fluid communication and slideably engaged with a stationary riser, the stationary riser being in fluid communication with a drainage system. The movable riser is made buoyant by one or more attache... | 07/27/2010 |
| 7658572 | Tide apparatus and tide structure It is an object to provide a tide apparatus comprising a storage tank connected to a underground pit for normally storing water of a constant amount, a connecting pipe for connecting between the underground pit and the storage tank, and a seismograph releasing appar... | 02/09/2010 |
| 7600944 | Flood vent The flood vent of the invention provides a frame configured for installation in a concrete block foundation wall in place of a single block. The frame includes an angularly oriented window. A gate is pivotally mounted at an upper end thereof within the frame to rest... | 10/13/2009 |
| 7497644 | Automatic liquid barrier system A liquid barrier system automatically deploys when a predetermined liquid level is attained, thereby preventing water or other liquid from entering a structure through an accessway, and automatically retracts when the liquid level recedes. The liquid barrier system ... | 03/03/2009 |
| 7429147 | Anti-flooding device for the exploitation of water energy An anti-flooding device with possible displacement of the waters for the exploitation of water energy includes a double closing system with an outer or inner cylindrical element with automatic, semi-automatic or manual operation, a pipe-line provided with an opening... | 09/30/2008 |
| 7364385 | Protective flood barrier A flood control system including panels made from plastic sheeting adhered to a frame and stacked one on top of the other. The panels are held in position by a series of columns, each of the columns having an H-shaped cross section that provides for and defines pane... | 04/29/2008 |
| 7360545 | Dishwasher A dishwasher having an improved valve assembly is disclosed. The dishwasher includes a housing, a tub provided in the housing, an injector assembly for injecting water onto tableware positioned in the tub, and an inlet valve assembly. The inlet valve assembly includ... | 04/22/2008 |
| 7299822 | Liquid level regulation apparatus Apparatus (10) is defined for regulating the level of liquid on a first side of a barrier (12) with respect to a moveable level of liquid on a second side of the barrier. The apparatus includes an inlet conduit (30) for positioning on the second... | 11/27/2007 |
| 7270498 | Flood vent The flood vent has an elongated box-shaped frame having a top end, a bottom end including a floor, and opposing sidewalls that define a fluid passageway. The frame has an open front and a track formed in the rear of the frame. A door is slidably mounted in the track... | 09/18/2007 |
| 7229234 | Method for preventing and discharging flood This invention discloses a simple and convenient method of floods control and with great discharge capacity. This invention is a method of speeding up the river floods water discharge ability into the sea by means of the natural tidal range. This is done by the foll... | 06/12/2007 |
| 7186058 | Stormwater detention system and method A stormwater runoff detention system includes a system including an inlet, a first surge chamber, a second surge chamber and one or more storage chambers. The first surge chamber is connected to receive stormwater from the inlet prior to the second surge chamber or ... | 03/06/2007 |
| 7125200 | Flow control system for a holding pond An apparatus for controlling the fluid flow rate from a drainage pond that is common in developed sites where the drainage pond is adapted to supply a degree of fluid capacitance so the runoff does not overflow downstream creek beds and the like. The method and appa... | 10/24/2006 |
| 7114404 | System and method for detecting flow in a mass flow controller Systems and methods are provided for detecting flow in a mass flow controller (MFC). The position of a gate in the MFC is sensed or otherwise determined to monitor flow through the MFC and to immediately or nearly immediately detect a flow failure. In one embodiment... | 10/03/2006 |
| 7083359 | Control gates A control gate is adapted to be installed across a channel for liquids. The Control gate has a barrier member capable of vertical or tilting movement and it is either slidingly or pivotally mounted to a frame of the control gate. In one instance, the control gate ha... | 08/01/2006 |
| 7052208 | Discharge control system for a reservoir A discharge control system for a reservoir having a pressure-communicating valve in a valve chamber with the inlet of the pressure-communicating valve connected the reservoir outlet aperture and the outlet of the pressure-communicating valve connected to a discharge... | 05/30/2006 |
| 7044165 | Outflow regulator for a gravity-fed liquid outlet An outflow regulator for a gravity-fed liquid outlet of a liquid reservoir comprising a restriction plate mountable within the liquid outlet for limiting a flow rate of an effluent. The restriction plate allows a lower passage for the effluent when a first level of ... | 05/16/2006 |
| 7037031 | Automatic barricade for low water crossings An automatic barricade includes a trench across a road that is covered by a grate allowing vehicular traffic during normal dry weather. Inside the trench is a series of barricade elements, each of which includes a float. When rising water fills the trench to a prede... | 05/02/2006 |
| 6997644 | Passive method for obtaining controlled drainage from a vessel Passive control of fluid flow from a vessel is provided by a floating weir assembly. The assembly includes a float and a weir opening that is in fluid communication with an outlet from the vessel. The weir opening and the fluid path connecting the weir opening and t... | 02/14/2006 |
| 6988853 | Muted tidal regulator A muted tidal regulator adapted to be interposed between a tidal body of water and an inland area at least partially isolated from the tidal body of water by a physical barrier. The assembly includes a tide gate that is made up of a conduit connecting said tidal bod... | 01/24/2006 |
| 6929241 | Hydraulic valve and a liquid flow system This invention relates to a hydraulic valve (10) and an interconnected hydraulic valve system, (10, 12). Two coaxially disposed pipes (14, 20) are positioned vertically to form an annular space (11) there between. A flange (22) pro... | 08/16/2005 |
| 6692187 | Flood gate for door A flood gate is provided that includes a frame defining a fluid passageway, a door pivotally mounted in the frame for movement between a plurality of open positions to permit flow of fluid therethrough, and at least one latching mechanism for holding the ... | 02/17/2004 |
| 6485231 | Foundation flood gate with ventilation A flood gate is provided which includes a frame defining a fluid passageway therethrough, a door pivotally mounted in the frame for movement between a plurality of open positions to permit flow of fluid therethrough, and at least one latching mechanism fo... | 11/26/2002 |
| 6478954 | Debris collecting apparatus A floating debris removal system has a bypass or overflow grate that is hinged at the top and positioned to swing downstream under certain conditions. The grate is fastened with a shear ring that will break when sufficient force is generated against the g... | 11/12/2002 |
| 6474361 | Floating weir assembly and fluid flow management system comprising same A floating weir assembly for controlling the discharge of fluid from a fluid reservoir. The weir assembly includes a buoyant body preferably comprising a sidewall surrounding a central bottom opening. A weir is provided on the inside surface of the sidewa... | 11/05/2002 |
| 6453483 | Spa weir system A spa weir includes a support member forming an opening between a spa body interior and a filter housing interior. Two or more spa doors are located at the opening to control the flow of water through the opening, the spa doors being pivotally connected t... | 09/24/2002 |
| 6425707 | Flood protection device for closing opening in wall against floodwater An automatically self-erecting barrier which prevents ingress of flood water into a building. A float is provided which when inactive may serve as a doorstep, and which when active rises with the flood water to extend a barrier across a lower part of a do... | 07/30/2002 |
| 6318404 | Backflow valve A backflow valve which includes a closure gate pivotally mounted along a substantially vertical pivot axis to one of the opposed sides of the valve body. A closure gate engaging profile positioned in a bottom of the valve body locks the closure gate in th... | 11/20/2001 |
| 6305411 | Normally-open backwater valve A backwater valve (for preventing the flow of liquid in a reverse direction when water backs up in the valve) has a gate which sealingly engages the input opening to the valve chamber so as to prevent the flow of water out of or into the input opening. Th... | 10/23/2001 |
| 5725326 | Movable dam The invention relates to a movable dam for a water-course. This dam comprises a chamber which, for example, is formed in a dike or alike and wherein a buoyant body is housed supporting a vertical retaining wall. At its top the chamber communicates with th... | 03/10/1998 |
| 5642534 | Spa weir gate The weir gate includes a pair of spaced juxtaposed guides that are disposed vertically on either side of an opening between the interior of a spa and a filtration cavity. A lower gate is fixed to and spans the guides in a generally vertical plane. A float... | 07/01/1997 |
| 5462075 | Method and device for controlling a flow of fluid The method relates to a method and a device for controlling the flow of a liquid. In a well (10) having at least one inlet (11) and one outlet (12) the areas of said inlet (11) is adjusted in dependence on the liquid level in said well (10) by a floating ... | 10/31/1995 |
| 5460462 | Liquid and flood water barrier wall forming-apparatus A liquid barrier system includes a structure forming a below ground level float-receiving chamber. An inlet passageway for round water or other liquid directs the liquid into the bottom of said chamber to fill the chamber when it is desired that a barrier... | 10/24/1995 |
| 5125766 | Mechanical automatic tilting weir with selfadjusting lowering of the weir-level during larger discharges The invention concerns a weir with an on a horizontal axis tilting gate (1). The control is automatic and completely mechanical and operates without an external source of energy. The control uses a float/counterweight (4) placed in an enclosure (5) which ... | 06/30/1992 |
| 5020567 | Drainage valve having a flexible flap with an edge taper A valve is installed into an underground conduit to control drainage of water through that conduit. The drainage control valve includes a perforated plate across the conduit. The latter plate is formed with a peripheral groove rectangular in cross section... | 06/04/1991 |
| 4478534 | Flood control system A system for controlling and preventing flooding of areas adjacent a waterway includes a multiplicity of interconnected flood gates located in the banks of the waterway. The system includes water level sensors and devices for moving the floodgates in resp... | 10/23/1984 |
| 4449851 | Energy-efficient automatic sluice gate for sustaining a fluid level An energy-efficient automatic sluice gate for sustaining a fluid level, separating an upstream pool from a downstream pool in an irrigation system and enabling the level of water in one of the pools to be kept constant at a settable value. A sluice gate s... | 05/22/1984 |
