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| Number | Title | Issue Date |
| 5825094 | Turbine array A hydroelectric power generating module comprises an upper housing section and a lower base section connected to the upper housing. The upper housing has a plurality of generators situated therewithin, and the lower base has a plurality of water flow path... | 10/20/1998 |
| 5808368 | Ocean wave energy conversion device A float (3) is attached by verticle mooring lines, or cables (8), to a pivoting lever device (2) which is mounted on a submerged anchor (1). The lever device is oriented perpendicular to the shoreline, with one arm of the lever pointing shoreward and the ... | 09/15/1998 |
| 5801454 | Air tool An improved air tool includes an integrated air motor and electrical generator wherein the stator is positioned on a side of the rotor body opposite the working end of the tool to reduce vibrations transmitted to the stator. The stator is also positioned ... | 09/01/1998 |
| 5798572 | Under water hydro-turbine energy generator design Hydro-turbine driven electrical generating unit, contained in a water tight bulb housing and submerged in a water current, is comprised of a rigid frame supporting a rotating system, consisting of a combination of turbine runner, turbine shaft, turbine sh... | 08/25/1998 |
| 5789826 | Equipment to extract ocean wave power An improved system for harnessing the energy of ocean waves to produce useful energy like electricity is disclosed wherein a power generating apparatus is attached to a support structure located out of the water and on dry land. The support structure comp... | 08/04/1998 |
| 5770893 | Wave energy device A wave energy device comprising a tube assembly comprising a plurality of open pipes of different lengths and natural resonant frequencies each (FIG. 8) where each tube (13) floating upright in the water (FIG. 2), with the tower end of the tube open to th... | 06/23/1998 |
| 5753978 | Floater energy generator having a rotatable blade wheel Disclosed is a floater energy generator which includes a sealable water tank to create inside the water tank a water and an air pressure smaller than an external atmospheric pressure, such that water inside the tank will not overflow the tank from a lower... | 05/19/1998 |
| 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 |
| 5696419 | High-efficiency electric power generator An electrical generator has a plurality of C-shaped stator members which are made of magnetically permeable material. Each C-shaped stator member includes a respective stator winding, and the stator members are positioned such that the ends of the members... | 12/09/1997 |
| 5659205 | Hydraulic turbine power generator incorporating axial thrust equalization means A sealless turbine generator mounted on a single shaft compising a radial turbine having a unique thrust equalizing mechanism mounted thereto and operative with a portion of the applied hydraulic fluid to the turbine radial runner and a thrust bearing for... | 08/19/1997 |
| 5644170 | Vechicle mounted atmospheric/aqua turbine having speed responsive intake means The Atmospheric/Aqua Turbine is an apparatus for producing energy by allowing air or water to be metered by controls through an adjustable air or water scoop into twin turbines to produce electricity when the atmospheric/Aqua Turbine is installed on vehic... | 07/01/1997 |
| 5561358 | Variable speed pumping-up generator A variable speed pumping up generator includes a first speed control unit for outputting a rotating speed command signal for controlling a pump turbine in accordance with a power output command and outputting an excitation control signal to an AC excitati... | 10/01/1996 |
| 5525842 | Air tool with integrated generator and light ring assembly An improved air tool includes an integrated air motor and electrical generator wherein the stator is positioned on a side of the rotor body opposite the working end of the tool to reduce vibrations transmitted to the stator. The stator is also positioned ... | 06/11/1996 |
| 5510656 | Wave energy converter In a method and apparatus for anchoring a structure such as a wave collector, sediment is pumped from the sea bed into the base of the structure. Hydraulic tuning of a wave energy converter collector, an advantageous rotor structure and a means of smoothi... | 04/23/1996 |
| 5491366 | Leak prevention in underwater power generation A system for generating electric power using internal waves and currents of oceans and rivers against a bag structure mounted moveably on a tower fixed to the ocean or river bottom. The bag structure is filled with compressed water and surrounds the suppo... | 02/13/1996 |
| 5476293 | Electric energy storage and distribution system of differential distribution type An electric energy storage and distribution system for a fluid-driven propeller, the propeller being connected to drive an AC generator, includes a planetary gear system by means of which rotation of the propeller is transferred to the AC generator motor,... | 12/19/1995 |
| 5440176 | Ocean current power generator An hydroelectric power plant is disclosed which comprises several combination turbine/generators which are suspended into an ocean current from a submerged tension leg type platform. Each of the turbine/generators are independently positionable horizontal... | 08/08/1995 |
| 5436507 | Hydroelectric plant draft tube water level control A control system for synchronous condensing operation of a hydroelectric turbine-generator wherein the draft tube water level for the turbine is controlled through the use of that generator's power or current consumption. Either parameter may be used in t... | 07/25/1995 |
| 5430333 | Energy generating system and method A plurality of inflation devices are linked to one another to form a loop that is movably restrained so that a segment of the loop is disposed at a lower reference location at the given depth in a first body of water, another segment of the loop is dispos... | 07/04/1995 |
| 5430332 | Movable and adjustable dam A movable and adjustable dam including a waterwheel for generating power in rivers, creeks, streams and other flowing bodies of water in which the use of a permanent dam would be impractical or undesirable. The preferred dam includes floatable wall member... | 07/04/1995 |
| 5389821 | Drainwater/sewage treatment installation for producing electrical power and for regulating a hydraulic flow A drainwater/sewage treatment installation for producing electrical power and for regulating waterflow in a drainage network is provided. The installation comprises at least a first reservoir, at least a second reservoir below the first reservoir and cond... | 02/14/1995 |
| 5362987 | Fluidic generator A fluidic generator (38) employing a fluidic feedback oscillator (12) in combination with a magnetogenerator (41) is described. Oscillational changes in pressure produced within the feedback oscillator are transmitted to opposite sides of a pole cap (74) ... | 11/08/1994 |
| 5329497 | Device for generation of hydrodynamic power The device exploits the energy of waves (32) of an open water body (30). It comprises at least one fixed float (34), at least one extendable pumping element (10) and one pressure medium (24). The pumping element (10) attached to float (34) has at least on... | 07/12/1994 |
| 5313103 | Auger shaped fluid medium engaging member An auger shaped, fluid medium engaging member is disclosed which includes a helically or auger shaped outer region disposed about a longitudinal axis which passes through a central region of the member. The auger shaped outer region establishes at least o... | 05/17/1994 |
| 5311064 | Equipment to extract ocean wave power An apparatus for extracting ocean wave power includes slidable horizontal support means. A turbine unit is mounted on the slidable horizontal support means and is rotatably engaged with water flow. An extendable ram is coupled to the turbine unit at one e... | 05/10/1994 |
| 5281856 | Water current energy converter A water current energy converter designed for and capable of converting the flow energy of a moving body of water into electric power comprises at least one water driven flow machine, especially a water driven turbine, an electric power generator (19) and... | 01/25/1994 |
| 5266837 | Apparatus for artifical wind power generation An apparatus for artificial wind power generation comprises a container which is constructed of, or supported by, a membrane structure formed of a plurality of gastight cells. The container is provided with an air inlet disposed at a lower part of the con... | 11/30/1993 |
| 5248896 | Power generation from a multi-lobed drilling motor A power generation unit associated with a downhole drilling motor capable of producing sufficient rotational speeds to produce power for operating downhole devices associated with the drilling operation. The power generation unit takes advantage of the hi... | 09/28/1993 |
| 5167483 | Method for utilizing angular momentum in energy conversion devices and an apparatus therefore An energy conversion device which benefits from forces associated with angular momentum. A mass such as fluid is directed through a conduit from one elevation to a lower elevation with the conduit configured to conform to a decreasing cross-sectional area... | 12/01/1992 |
| 5149984 | Electric power supply for use downhole A downhole electrical power supply apparatus has a high fluid pressure source zone and a low fluid pressure discharge zone each defined at least partially within the apparatus. A fluid powered engine provides rotational mechanical output and is powered by... | 09/22/1992 |
| 5136174 | Multi-paddlewheel system for generating electricity from water canal A generator for electricity, utilizing one or two groups (29A and 29B) of separately placed water-driven paddlewheels (31) placed side by side in man-made canal. Each group is coupled together by a belt (41A and 41B) embracing a plurality of drive pulleys... | 08/04/1992 |
| 5105094 | Method and apparatus for converting wave motion into an alternative energy source An apparatus for converting the energy contained in the wave motion of a body of water to alternate forms of energy. The apparatus comprises a main water pipeline, a water inlet for directing water into the main water pipeline from a plurality of water in... | 04/14/1992 |
| 4965998 | Mini hydro electric plant A mini hydroelectric power plant is provided that utilizes a water driven turbine to drive an electric generator for producing electricity. Flowing water is collected from the turbine and pumped back to a reservoir to be used again for driving the turbine... | 10/30/1990 |
| 4955789 | Duplex turbine replacement unit and method A duplex turbine replacement unit to up-grade an obsolete or worn out quad turbine unit and thereby obtain enhanced power plant operational and output efficiencies, while at the same time providing a turbine profile and method of installation wherein the ... | 09/11/1990 |
| 4920277 | Control system for a variable speed hydro-power plant apparatus A variable speed hydro-power plant includes a pump turbine (2) having a S-shaped characteristics at the turbine operation. A current time turbine operating point is grasped on a turbine characteristics diagram of the pump turbine (2). A limit operation ch... | 04/24/1990 |
| 4857753 | Wind energy convertor In a vertical axis wind generator incorporating a circular turbine supported by an uppermost part of an upstanding support, a stator surrounding and coaxial with the turbine comprises an upper annular body positioned adjacent and or above the upper end of... | 08/15/1989 |
| 4849648 | Compressed gas system and method A system and method of selectively deployed and utilized compressed air energy storage satellite facilities within an electrical power grid network. The satellite facilities are independent of geological formations and provide means for increasing the loa... | 07/18/1989 |
| 4829196 | Energy-saving pressure reducer The pressure of fluid supplied by a high-pressure line is reduced to a lower pressure suitable for a low-pressure utilization device located in an environment having an electrical grid by interposing a fluid motor between the high-pressure line and the lo... | 05/09/1989 |
| 4823018 | Control system for variable speed water-wheel generator apparatus A control system for a variable speed water turbine generator apparatus includes a first function generator that is responsive to an output command signal. The first function generator produces a rotation number command signal. A speed adjuster produces a... | 04/18/1989 |
| 4818888 | Water-powered electricity generating apparatus Water-powered electricity generating apparatus, for use in rivers and other bodies of water having current flow therein, comprises a water wheel and an adjacent platform. The water wheel has a number of blades which are pivotally attached adjacent a first... | 04/04/1989 |
