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9011042 Floating body connection-type flap gate  
To prevent a door body from shaking significantly when it rises. A floating body flap gate is provided which is disposed on a roadway surface in an opening; and causes a door body to rise to block...
8695628 Opening/closing device  
An opening/closing device 1 according to the present invention includes a gate 10 that receives a flow of a sewage W in an upright state, and can fall toward a downstream side of the flow and a...
8591148 Multi-rate flow control system for a detention pond  
A flow control system includes a movable riser with multiple flow rate restrictors within a stationary riser that is interfaced to a drainage system. The movable riser is buoyed by float(s)...
8590560 Opening/closing device  
An opening/closing device includes a gate that receives a flow of a sewage, and can fall toward a downstream side of the flow, a fall prevention unit that prevents the gate from falling by...
8585321 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...
8578961 Low profile backwater valve  
A low profile backwater valve includes a hollow valve body having an inlet, an outlet, and a bottom. A pivoting valve member is pivotally movable between a normally open position along the bottom...
8511939 Self-actuating storm surge barrier  
The shore side of a shore line water barrier is protected from flooding caused by storm surge over-topping the barrier. Water overtopping the barrier, such as from wind waves crashing against the...
8499785 Overflow valve for prevention of water vapor loss  
A system and valve for regulating the level of a fluid. The valve having a floating head member that is connected via a rotatable member to a drain member, where fluid may drain from the valve....
8240951 Diverting storm surge-apparatus and method  
An aqueduct assembly is provided as having a front gate assembly and a rear gate assembly. The front gate assembly has a front gate which will open to let water into the aqueduct assembly. When...
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...
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...
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...
7942606 Groundwater control system with automatic water flow regulator  
An automatic water flow regulator apparatus and a system for controlling and regulating the level of groundwater in an agricultural field. An automatic flow regulator adapted for use in a buried...
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...
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...
7744310 Hydrostatically operated variable height bulkhead  
A self-adjusting barrier incorporates a series of float units restrained between a primary wall, such as a bulkhead, and a secondary wall, such as sheetpile. The secondary wall may be braced to...
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...
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...
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...
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,...
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...
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...
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...
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....
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...
6779947 Gate systems and methods for regulating tidal flows  
A tidal gate system for a regulating the flow of tidal waters between a first side and a second side of a main opening. The tidal gate system comprises a primary door member defining a regulated...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
4431340 Fish elevator and method of elevating fish  
A means and method for transporting fish from a lower body of water to a higher body of water. The means comprises a tubular lock with a gated entrance below the level of the lower body of water...
4324506 Self-regulating fluid control valves  
A self-regulating tide gate is installed on a conduit connecting an open body of water with a protected body of water. The tide gate comprises a mounting plate secured to the conduit at its end in...
4229119 Liftable and collapsible barrage  
An artificial dam or barrage which is adapted to be moved vertically from e bottom of the waterway in which it is installed is provided with a sheet of flexible material fixed to the bottom of the...
4225434 Storm overflow basin  
A storm overflow basin for use, e.g. in combined sewage systems has a storage tank leading to a storm overflow unit having a restricted sewage discharge and a storm overflow, the latter being...
4146937 Perimeter skimming gutter with fluid level-responsive weir closure for weir skimming flow control  
A perimeter skimming gutter for swimming pools is provided including a gutter conduit for disposition about the perimeter of a swimming pool and adapted to carry water at a level below a...
4146346 Apparatus and method for controlling tide waters  
The salinity intrusion of ocean tidewater into a communicating fresh water river is prevented by laterally restricting the out-flow cross-section of the river with a series of flotation weirs and...
4103497 Manoeuvrable weir  
Manoeuvrable weir comprising at least one flap hinged to a threshold shel laid on the bottom of a waterway to be dammed. The flap foresees openings on its surface from which lead out conduits...
4103496 Collapsible and expansible barrage  
A collapsible and expansible barrage comprising a threshold structure dised at the bottom of the waterway, a metallic flap, provided with an upturned-glass type of air-tank, hinged to said...
4091624 Self-regulating fluid control valve  
Self-regulating tide gates comprise a door pivotally mounted to the end of a conduit connecting two separated bodies of water. The door is held open to permit full reciprocal flow between a...
3952522 Irrigation systems automation  
An irrigation system innovating manual practices and method elevating channeled waters for a diversion to the land. A check means locating in the ditch cooperating with a metering valve means...

Matches 1 - 50 out of 67 1 2 >