Abstract: A method and device for extracting fluid from a body of fluid is has a bellows with a feed system interfaced to a first end of the bellows. A floating head is interfaced to a distal second end of the bellows and has one or more buoyancy elements. The buoyancy elements cause the floating head to float at a surface of the fluid. One or more inlets on a lower surface of the floating head are in fluid communication with the distal second end of the bellows, such that, fluid from a stratum beneath the surface of the fluid is drawn into the inlet(s), passes through the bellows, and into the feed system.

Abstract: A flow control system for a body of water includes a floating portion that is covered by a shroud and includes a buoyant member. The floating portion has an inlet portion within the shroud and the inlet portion is suspended distal from the floating portion forming a gap. A stationary portion is interfaced to a containment surface of the body of water and is in fluid communication with a drainage system. An extendable member is interfaced to the inlet portion, fluidly interfacing an orifice of the inlet portion to the stationary portion, and therefore to the drainage system. When in use, fluid from below a surface of the body of water flows through the gap, into the orifice, through the extendable member, and out through the drainage system. The flow rate of the fluid is constant through a range of depths of the body of water.

Abstract: A flow control system for a body of water includes a floating portion that is covered by a shroud and includes a buoyant member. The floating portion has an inlet portion within the shroud and the inlet portion is suspended distal from the floating portion forming a gap. A stationary portion is interfaced to a containment surface of the body of water and is in fluid communication with a drainage system. An extendable member is interfaced to the inlet portion, fluidly interfacing an orifice of the inlet portion to the stationary portion, and therefore to the drainage system. When in use, fluid from below a surface of the body of water flows through the gap, into the orifice, through the extendable member, and out through the drainage system. The flow rate of the fluid is constant through a range of depths of the body of water.

Abstract: A flow control system of the present invention includes a movable riser slideably engaged with a stationary riser and having a flange. The stationary riser is interfaced to a downstream drainage system. The movable riser is made buoyant by one or more floats such that, as the water level around the flow control system changes, the movable riser follows the changes based upon the buoyancy of the float(s), thereby maintaining the flange at a constant depth. The gap between an upper edge of the flange and the inner perimeter of the stationary riser coupled with an area of the gap defines a flow rate that is constant. Vents couple an inner cavity of the movable riser to air above the fluid, the inner cavity being in communication with the drainage system as well.

Abstract: A method and device for extracting fluid from a body of fluid is has a bellows with a feed system interfaced to a first end of the bellows. A floating head is interfaced to a distal second end of the bellows and has one or more buoyancy elements. The buoyancy elements cause the floating head to float at a surface of the fluid. One or more inlets on a lower surface of the floating head are in fluid communication with the distal second end of the bellows, such that, fluid from a stratum beneath the surface of the fluid is drawn into the inlet(s), passes through the bellows, and into the feed system.

Abstract: A flow control system of the present invention includes a movable riser slideably engaged with a stationary riser and having a flange. The stationary riser is interfaced to a downstream drainage system. The movable riser is made buoyant by one or more floats such that, as the water level around the flow control system changes, the movable riser follows the changes based upon the buoyancy of the float(s), thereby maintaining the flange at a constant depth. The gap between an upper edge of the flange and the inner perimeter of the stationary riser coupled with an area of the gap defines a flow rate that is constant. Vents couple an inner cavity of the movable riser to air above the fluid, the inner cavity being in communication with the drainage system as well.

Abstract: 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) attached to the movable riser. As the fluid level around the flow control system changes, the movable riser tracks the changes, thereby raising and lowering the flow rate restrictors. Since the flow rate restrictors have differing areas in the horizontal plane, an interstitial opening between the outer edge of each flow rate restrictor and the inner perimeter of the stationary riser differs. The flow rate is constant and proportional to the depth of the fluid over the interstitial opening with the least area. The flow rate remains constant until that flow rate restrictor creating the smallest interstitial opening lifts above the upper edge of the stationary riser at which time, the next flow rate restrictor determines the flow rate.

Abstract: 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 attached floats such that, when the liquid level around the flow control system increases to a pre-determined level, the movable riser lifts due to the buoyancy of the float(s), thereby maintaining the pre-determined displacement as the water level continues to rise, yielding either a constant flow rate or a variable, predictable flow rate through the drainage system.

Abstract: 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 flow control system increases to a pre-determined level above a top rim of the conduit, the tapered plunger lifts due to the buoyancy. In such, the flow rate is maintained substantially constant. At the emergency level, alternate drain systems provide increased drainage to reduce the potential of flooding.

Abstract: 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 liquid level around the flow control system increases to a pre-determined level, the movable plunger lifts due to the buoyancy, thereby maintaining the pre-determined distance between the surface level and a bottom surface of the movable plunger, keeping the flow rate at an approximately constant level independent of the water level.

Abstract: 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) attached to the movable riser. As the fluid level around the flow control system changes, the movable riser tracks the changes, thereby raising and lowering the flow rate restrictors. Since the flow rate restrictors have differing areas in the horizontal plane, an interstitial opening between the outer edge of each flow rate restrictor and the inner perimeter of the stationary riser differs. The flow rate is constant and proportional to the depth of the fluid over the interstitial opening with the least area. The flow rate remains constant until that flow rate restrictor creating the smallest interstitial opening lifts above the upper edge of the stationary riser at which time, the next flow rate restrictor determines the flow rate.

Abstract: 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 flow control system increases to a predetermined level above a top rim of the conduit, the tapered plunger lifts due to the buoyancy. In such, the flow rate is maintained substantially constant. At the emergency level, alternate drain systems provide increased drainage to reduce the potential of flooding.

Abstract: 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 liquid level around the flow control system increases to a pre-determined level, the movable plunger lifts due to the buoyancy, thereby maintaining the pre-determined distance between the surface level and a bottom surface of the movable plunger, keeping the flow rate at an approximately constant level independent of the water level.

Abstract: 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 attached floats such that, when the liquid level around the flow control system increases to a pre-determined level, the movable riser lifts due to the buoyancy of the float(s), thereby maintaining the pre-determined displacement as the water level continues to rise, yielding either a constant flow rate or a variable, predictable flow rate through the drainage system.

Abstract: 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 attached floats such that, when the liquid level around the flow control system increases to a pre-determined level above a top rim of the movable riser, the movable riser lifts due to the buoyancy of the float(s), thereby maintaining the pre-determined displacement as the water level continues to rise.