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| Number | Title | Issue Date |
| 7837411 | Methods and apparatus for improved hydropower system Methods and apparatus for improved power generation through movement of water retrofitting existing hydroelectric dams with draft tube inserts and tailrace walls to increase water velocity for production of power using hydrokinetic turbines installed in the tailrace... | 11/23/2010 |
| 7785037 | Spillway hydroelectric turbine A hydroelectric system comprising a support member, a rotational torque converter, a drive member being disposed at one end of a support arm, a water driven mechanism in rotational communication with the drive member, wherein the support arm can be pivotally adjuste... | 08/31/2010 |
| 7478974 | Apparatus for hydroelectric power production expansion Normally hydroelectric dam powerhouses use river flow once before discharging it as turbulent tailwater, ineffective to spin turbines. The present invention uses tapered channels to confine and constrict turbulent tailwater into laminar flow that drives turbines bot... | 01/20/2009 |
| 7372172 | Device and method for the generation of electrical energy Arrangement for generating electrical power from a flowing medium, wherein the arrangement includes a plurality of turbine generator units. At least some of the plurality of generator units are arranged at least one of one above another and one beside another. At le... | 05/13/2008 |
| 7275891 | Apparatus for controlling underwater based equipment The apparatus may include a space frame on which is mounted at least one hydrofoil for generating positive or negative lift. The frame is attachable to underwater equipment such as a turbine. The hydrofoils are adapted to produce negative lift when a flow of liquid ... | 10/02/2007 |
| 7262517 | Hydro-electric power generating system A hydroelectric power plant for use in flowing bodies of water is described which includes a new spillway canal constructed to enhance the flow of water by increasing the water pressure. Because the canal has the angled feature on both ends, the water flow can be en... | 08/28/2007 |
| 7235893 | Reduced friction wind turbine apparatus and method The present invention is a wind power apparatus for driving an electric generator. The wind power apparatus comprises a frame, a vertical axle mounted on the frame and a buoyant hull. The buoyant hull is rotational disposed on the axle. The buoyant hull has a curvil... | 06/26/2007 |
| 7215036 | Current power generator A current power generator includes a vertical support member mounted to the seabed and horizontal support members mounted to the vertical support member. Generators are mounted between the horizontal support members. A rotatable shaft is operatively connected to eac... | 05/08/2007 |
| 7199483 | Tidal power generation A tidal power generator has a floating vessel hull that is subject to rising and falling water levels so that the hull moves vertically up and down. Linear-to-rotary converters are coupled between the vessel hull and a fixed object. The converters allow the hull to ... | 04/03/2007 |
| 7116005 | Tidal/wave flow electrical power generation system An integrated system for tidal/wave flow electrical power generation. This bi-directional system utilizes the wave flow on the shores and the flow of various rivers and estuaries to generate electrical power through a venturi box which has mounted in it and comprise... | 10/03/2006 |
| 7102249 | Generator for use in hydroelectric power station and method of using same One aspect of the present invention concerns a generator for a hydroelectric power station, having a stator and a rotatably mounted rotor, and first vanes which act on the rotor and which cause rotation of the rotor. In order for the generator to be of a smaller str... | 09/05/2006 |
| 7061135 | Device for generation of electrical power Device and process generating electrical power from flowing medium. Device includes turbine generator units connected to form module(s), and at least two fixed-position structures arranged to form a waterway. Module(s) are arranged between the fixed-position structu... | 06/13/2006 |
| 7012341 | Electric power generator equipment In order to obtain an electric power generator equipment capable of efficiently generating electric power and capable of reducing cost, without a water bath and constructive maximum height, the electric power generator equipment comprises a floating member for float... | 03/14/2006 |
| 6956300 | Gimbal-mounted hydroelectric turbine A power plant extracts energy from a free flowing motive fluid by means of a turbine mounted on a gimbal. The shroud element of the fluid intake has external rudders, in conjunction with the gimbal mounting, enabling the enclosed turbine to instantaneously respond t... | 10/18/2005 |
| 6954006 | Hydroelectric system A hydroelectric system for disposal in a continuous flowing water vein includes at least one generator and a housing configured to include a venturi flow restriction for accelerating flow to the generator. ... | 10/11/2005 |
| 6930407 | Method for producing a hydropower plant Method for producing a device for obtaining electrical energy from hydropower and a method for modifying a dam, in which, at a remote production site, at least two turbine-generating units, comprising a turbine and a generator connected to it, are produced, at a rem... | 08/16/2005 |
| 6641327 | Water turbine arrangement A water turbine arrangement employs a generator enclosed in a cylindrical casing. A turbine is arranged directly on the generator shaft outside the casing. The casing is arranged to a flow conduit by a support structure which has a tubular support shaft a... | 11/04/2003 |
| 6575662 | Water quality management system and method A water quality management system and method that controls the exchange of water between two bodies of water (e.g., estuary and ocean) separated by at least one land barrier. The system consists of a series of water exchange units that are disposed in the... | 06/10/2003 |
| 6554535 | System for protecting coastal land from rise of surface of the sea A system for protecting a coastal land from a rise of the surface of the sea, wherein offshore dams and caissons containing pump-turbines are provided in such a manner that the caissons and dams extend in parallel with the coastline of the land. Partition... | 04/29/2003 |
| 6283673 | Method of protecting coastal land from rise of surface of the sea A system for protecting a coastal land from a rise of the surface of the sea, wherein offshore dams and caissons containing pump-turbines are provided in such a manner that the caissons and dams extend in parallel with the coastline of the land. Partition... | 09/04/2001 |
| 6281597 | Hydroelectric installation and method of constructing same A hydroelectric power installation including a pre-existing gated spillway with upstream bulkhead slots and bulkhead service crane and hydroelectric generating modules configured to fit the existing upstream bulkhead slots. Each module including a plurali... | 08/28/2001 |
| 6146096 | Bulb turbine system The invention concerns a system (1) of bulb turbines (2), in which each bulb turbine (2) comprises a generator located in an essentially cylindrical area (4) of a turbine housing and a turbine wheel coupled to the generator and mounted in such a way that ... | 11/14/2000 |
| 5882143 | Low head dam hydroelectric system A low head hydroelectric system for maximizing electrical power generation is disclosed. The hydroelectric system includes a support structure having a rail member adapted to be positioned above a flowing body of water adjacent a low head dam wall. An act... | 03/16/1999 |
| 5800077 | Method and apparatus for monitoring a hydroelectric facility trash rack A system is provided for monitoring fouling of a trash rack for a hydroelectric power generation facility. The trash rack monitoring system includes sensors for detecting head upstream and downstream of a trash rack as well as the flow through an inlet co... | 09/01/1998 |
| 5754446 | Method and apparatus for optimizing performance of a kaplan turbine A method and system for optimizing performance of a Kaplan turbine power generating unit are provided wherein an optimal "N-dimensional" virtual cam is populated with gate and blade positional settings producing maximum power output for a set of N operati... | 05/19/1998 |
| 4998846 | Concrete dam bottom discharge works Bottom discharge works of a concrete dam comprise a bottom water conduit provided within the dam body and a block attached thereto at the tail-water end. In the lower portion of the attached block, there are provided a turbine chamber with a hydroelectric... | 03/12/1991 |
| 4941771 | Hydroelectric plant A hydroelectric system is disclosed which is designed to run intermittently to compensate for a low flow source. A float system is employed to control the operating points of the turbine by opening an inlet valve at one predetermined pond level and closin... | 07/17/1990 |
| 4771699 | Device for cable transport A device for transport of a cable in vertical shafts, in which the cable is attached to a number of sliding means at regular intervals and arranged to slide or roll along a vertical guiding rail. The sliding means are also rigidly attached to a lifting wi... | 09/20/1988 |
| 4772157 | Liquid level control system and method of operating the same A control apparatus responsive to the difference between liquid levels, and a method of controlling a liquid flow regulator by use of the apparatus is disclosed. The control apparatus may comprise a transducer responsive to the back-pressure maintained in... | 09/20/1988 |
| 4746244 | Apparatus for the generation of hydroelectric power and method of manufacturing and installing same A hydroelectric power generating plant includes separate barges upstream and downstream of a dam, and a siphoning penstock attached to and spanning between the barges to enable fluid communication over the dam and to appropriate power generating equipment... | 05/24/1988 |
| 4573827 | Laterally movable powerhouse A hydraulic turbine installation is disclosed for a site comprising a dam having a floor and opposing sidewalls defining a spillway. The installation comprises a frame member which slideably engages the spillway floor on a downstream side of the dam. The ... | 03/04/1986 |
| 4569200 | Control apparatus for tidal turbine A tide-operated turbine is located in a holding tank having communication with a tide-fed reservoir so as to supply the turbine with operating water. To provide continuous, around-the-clock operation of the turbine by insuring a positive operating head th... | 02/11/1986 |
| 4540313 | Apparatus for the generation of hydroelectric power and method of manufacturing and installing same A hydroelectric power generating plant includes separate intake and power generating barges spanning a dam, and a penstock attached to and between the barges to enable fluid communication over the dam and between the barges. In constructing the power gene... | 09/10/1985 |
| 4488835 | Penstock fish diversion system A fish diversion system for a penstock housing a hydroelectric turbine employs large area screens to shunt fish to a bypass conduit above the turbine. The screens are disposed generally lengthwise of the penstock and the upstream screen is inclined upward... | 12/18/1984 |
| 4476396 | Low-head hydroelectric generation system The invention pertains to a hydroelectric generating system for use with low-head dam and spillway installations. A vessel in the form of a barge contains ballast tanks, pumps and associated structure permitting the vessel to selectively float or to be su... | 10/09/1984 |
| 4468153 | Symmetric tidal station A tidal station includes a plurality of turbine/generator sets removably insertable along the central axis of a caisson to provide a symmetrical installation. Fixedly disposed basin side and sea side diffusers include inlets alternately juxtaposed opposit... | 08/28/1984 |
| 4464080 | High volume tidal or current flow harnessing system Apparatus permitting the utilization of large volumes of water in the harnessing and extracting of a portion of the power generated by the rise and fall of ocean tides, ocean currents, or flowing rivers includes the provision of a dam, and a specialized s... | 08/07/1984 |
| 4437017 | Arrangement for hydroelectric power plants Hydroelectric power plant containing a flow tube for the water, an inlet tube leading to the flow tube and a discharge tube leading from the flow tube. In the flow tube a turbine is arranged to be driven by the flowing water and which via a drive shaft dr... | 03/13/1984 |
| 4364228 | Hydraulic turbine system with siphon action The hydraulic turbine system includes: an electric generator; rotary turbine blades; a hydraulic pump for operation by rotation of the turbine blades; a hydraulic motor for driving the generator; a hydraulic reservoir; and connections between the pump, the motor and the... | 12/21/1982 |
| 4352989 | Hydromotive set A hydromotive assembly for installation adjacent the water passage through a damming structure includes a main body component having an internal draft tube and provided with external guide and support elements allowing displacement of the assembly alterna... | 10/05/1982 |
