Did You Know...
...that it was melting ice cream that inspired the invention of the outboard motor? It was a lovely August day and Ole Evinrude was rowing his boat to his favorite island picnic spot. As he rowed, he watched his ice cream melt and wished he had a faster way to get to the island. At that moment the idea for the outboard motor was born!
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| Number | Title | Issue Date |
| 8164210 | Vertical axis wind turbine with angled braces An improved wind turbine comprises: (i) a turbine rotor with a support platform; (ii) a rotatable vertical shaft extending from or through that platform; (iii) at least one bearing for the shaft; (iv) a plurality of horizontally disposed, box-shaped wind catchment v... | 04/24/2012 |
| 8026623 | Wind turbine generator, active damping method thereof, and windmill tower A wind turbine generator, an active damping method thereof, and a windmill tower in which vibrations of the wind turbine generator itself or the windmill tower can be reduced at low cost are provided. The acceleration due to vibrations of a nacelle is detected with ... | 09/27/2011 |
| 8018206 | Excitation device for an electric machine With an aim of minimizing excitation losses in electric machines having electrically excited and displaceable secondary parts, bi-directional inductive transmission of energy is carried out by a rotating inductive transmission device. An associated electronic system... | 09/13/2011 |
| 7989973 | Fluid-responsive oscillation power generation method and apparatus Power generation apparatus includes a wing-shaped blade having opposite sides, opposite ends and leading and trailing edges extending between those ends. A lift differential producing device in the blade produces a lift differential at the opposite sides of the blad... | 08/02/2011 |
| 7948100 | Braking and positioning system for a wind turbine rotor A method of positioning a wind turbine rotor comprises defining a predetermined angular position in a main rotation plane of the rotor and controlling a rate of deceleration of the rotor, such as to stop the rotor at the predetermined angular position. ... | 05/24/2011 |
| 7948218 | Voltage regulator for magnetogenerators with configurable connection of the phase windings The voltage regulator receives power in A.C. from a permanent magnet voltage generator, having phase windings with a configurable connection, to supply power in D.C. to a battery. The voltage regulator comprises a plurality of semi-bridge rectifiers connected betwee... | 05/24/2011 |
| 7948216 | Control apparatus for automotive alternator and automotive power generation system A control apparatus controls power generation of an electric generator and communicates with an external control apparatus. The control apparatus includes: a control circuit that controls the power generation of the electric generator according to a command signal t... | 05/24/2011 |
| 7948105 | Turboalternator with hydrodynamic bearings This invention provides a small, high efficiency, oil-free turbine-driven alternator (i.e. turboalternator) suitable for conversion of stored energy in a process gas to electrical power, facilitating recapture of energy during operation that would otherwise be waste... | 05/24/2011 |
| 7948102 | Method for operating a wind energy plant with a doubly-fed asynchronous machine and wind energy plant with a doubly-fed asynchronous machine Method for operating a wind energy plant having a doubly-fed asynchronous machine, a grid-sided converter and a generator-sided converter both being controlled by a control means, the method comprising the following steps: in a regular operating mode the converters ... | 05/24/2011 |
| 7948110 | Wind-driven electricity generation device with Savonius rotor A vertical wind-driven electricity generation device is described, which utilizes a unique segmented Savonius rotor and which is easily handled, transported, assembled and maintained, even by a single person. The blades of the rotor are segmented into a plurality of... | 05/24/2011 |
| 7948101 | Apparatus for production of hydrogen gas using wind and wave action A platform apparatus for producing hydrogen gas from water includes a buoyant base configured for floating in a body of water, such as on the ocean, a vertical support member extending upwardly from the base, a wind turbine rotatably coupled to the support member fo... | 05/24/2011 |
| 7944070 | Yaw system for a nacelle of a wind turbine and wind turbine A yaw system of a wind turbine includes a plurality of motors, each motor being coupled to the nacelle for applying torque to the nacelle; a plurality of controllers, one controller for each of the motors, each controller being configured to control the respective m... | 05/17/2011 |
| 7944185 | Power control system and method A power control system comprises a prime mover and a generator driven by the prime mover. A control device is coupled with the prime mover and the generator wherein the control device ascertains a power level of the generator and varies an output power of the prime ... | 05/17/2011 |
| 7944077 | Generator, nacelle, and mounting method of a nacelle of a wind energy converter This invention provides a nacelle of a wind energy converter and a corresponding mounting method of a nacelle of a wind energy converter and a generator for a wind energy converter. The nacelle includes a main frame; a generator including a stator and a rotor; a gen... | 05/17/2011 |
| 7944184 | Static compensator apparatus for HVDC system A static compensator apparatus for a HVDC system may control harmonic wave compensation at high passive speed to meet operating characteristics of the HVDC system. A static compensator is turned-on in a normal mode and compensates for invalid power and removes a har... | 05/17/2011 |
| 7944186 | Power control system and method A power control system comprises a prime mover and a generator driven by the prime mover. A control device is coupled with the prime mover and the generator wherein the control device ascertains a power level of the generator and varies an output power of the prime ... | 05/17/2011 |
| 7944067 | System and method for reducing rotor loads in a wind turbine upon detection of blade-pitch failure and loss of counter-torque A system and method for reducing rotor loads in a wind turbine that includes a brake and one or more rotor blades coupled to a rotor. Upon detection of a loss of counter torque and a blade-pitch failure in at least one rotor blade, a processor reduces a generator ov... | 05/17/2011 |
| 7944183 | Output voltage controller for AC vehicle generator An output voltage controller for an AC vehicle generator is proposed. The output voltage controller can easily suppress variation in rectified output voltage due to a switching surge without using a slope generation circuit in a voltage adjustment circuit. An excita... | 05/17/2011 |
| 7944075 | Wind turbine based energy storage system and method using heavy weighted devices An energy storage system, and related method, comprises a plurality of wind turbines, each with a vertical shaft that passes through a support platform. One or more braces may be affixed to each vertical shaft at one end of this platform, at an angle of less than 60... | 05/17/2011 |
| 7915749 | Method for generating electrical power from municipal wastewater An electrical generating assembly 10 which may be selectively used in combination with and/or as part of a municipal wastewater treatment facility 12 and which allows the wastewater treatment facility 12 to generate electrical energy 48,62, 1... | 03/29/2011 |
| 7880320 | System, device, and method for controlling a wind turbine using seasonal parameters A method for controlling an operation of a wind turbine. A plurality of operating specifications, each of which corresponds to a season, is defined. A current season is determined. An operating specification corresponding to the current season is selected. An operat... | 02/01/2011 |
| 7875992 | System and method for generating electricity A system for generating electricity including a vertical oriented tower comprising an intake opening for receiving fluid flow, a scoop that is moveably mounted to a base for directing the fluid flow to the intake opening, a fluid-activated mechanism that is automati... | 01/25/2011 |
| 7872362 | Vehicle-use power supply control apparatus The vehicle-use power supply control apparatus includes a first battery supplying electric power to a load, an alternator driven by a vehicle engine, a second electric accumulator parallel-connected to the first battery, an electric power converter performing two-wa... | 01/18/2011 |
| 7863767 | Turbine driven electric power production system and a method for control thereof A turbine (2) driven electric power production system (1),—said turbine (2) arranged for being driven by a fluid (3) having a fluid speed (v) varying in time,—said turbine (2) connected to a hydrostatic displacement pump (6 | 01/04/2011 |
| 7851936 | Water current power generation system A water current power generation system is provided, including a plurality of flotation tubes joined by a body structure; a plurality of ballast chambers joined by a body structure; a plurality of induction type power generation units disposed within housings associ... | 12/14/2010 |
| 7851931 | Soundproof type engine generator A soundproof type engine generator has an outer shell made by attaching at least a bottom panel to a three-dimensional frame and four wheels in the lower part thereof for transport. The soundproof type engine generator also has handles provided coaxially with opposi... | 12/14/2010 |
| 7851932 | Backpack based system for human electricity generation and use when off the electric grid An electricity-generating backpack that is substantially lighter in weight, has the multiple springs replaced with one large spring whose spring constant can be adjusted in the field in seconds, and replaces a DC generator with a brushless AC generator that permits ... | 12/14/2010 |
| 7851934 | Method for controlling a wind turbine connected to the utility grid, wind turbine and wind park The invention relates to a method for controlling a wind turbine connected to the utility grid comprising steps of detecting a fault of the utility grid, and controlling one or more rotor blades in a fault mode wherein said one or more rotor blades are pitched in or... | 12/14/2010 |
| 7851935 | Solar and wind energy converter An integrated hybrid energy generating system capable of converting wind and solar energy for use with an electrical generator. During the daytime, the system concurrently derives energy from both wind and solar energy sources. During the nighttime, it continuously ... | 12/14/2010 |
| 7847421 | System for generating electrical energy from ambient motion A system for generating electrical energy from ambient motion that comprises two stages, a resonating electrical generator and a kinetic energy conversion system. The different stages have differing resonant frequencies to enable harvesting energy from low frequency... | 12/07/2010 |
| 7843076 | Hydraulic energy accumulator Example energy storage systems (20, 20′, 20″) comprises a fluid circuit (22, 22′, 22″) and an electrical unit (24, 24′, 24″) configured to operate as a motor in a first phase of operation and to operate as a generator in a second pha... | 11/30/2010 |
| 7834471 | Spring powered electric energy storage system A self-sustaining electrical power generating system includes a spring system that stores stored energy, the spring system having an input for recharging the stored energy and an output for releasing the stored energy, wherein the spring system generates a monitor s... | 11/16/2010 |
| 7830033 | Wind turbine electricity generating system System for producing electricity from wind energy includes a shaft, at least two turbines rotatably mounted to the shaft and arranged to rotate independent of one another and in opposite directions when subjected to the same wind, and one or more generators that con... | 11/09/2010 |
| 7830032 | Generating power from natural waves in a body of water Apparatus and method are provided for generating electrical power from an installation site in a body of water wherein waves occur naturally over an area of the body of water to move the water about a mean water level beneath an ambient atmosphere to effect an alter... | 11/09/2010 |
| 7825532 | Electrical generator for wind turbine A wind turbine or other rotary device has its outer perimeter constructed with coils that form a rotor (26) of an electrical generator. A stator assembly (52) is positioned at the lower perimeter of the path of the rotor and includes stator halves that... | 11/02/2010 |
| 7821151 | Hybrid solar thermal chimney A solar power arrangement for converting solar energy into electricity comprising; a solar chimney, the chimney having a flared base spaced from the ground the chimney including a transparent surface to allow solar energy to heat air within the solar chimney. A firs... | 10/26/2010 |
| 7821153 | System and method for generating electricity A system for generating electricity including a vertical oriented tower comprising an intake opening for receiving fluid flow, a scoop that is moveably mounted to a base for directing the fluid flow to the intake opening, a fluid-activated mechanism that is automati... | 10/26/2010 |
| 7816802 | Electricity generating assembly A electricity generating assembly includes a plurality of rotatable fan blades. A generator is connected to the plurality of fan blades to convert rotation of the fan blades into electricity. A plurality of shutters surround the plurality of fan blades. The pluralit... | 10/19/2010 |
| 7816798 | Power train for a wind power plant A power train for a wind power plant includes a rotor (1) for driving a gear (4), wherein the rotor blades (2) of the rotor are pivotally arranged around the longitudinal axis thereof on the hub of the rotor (1). A three-phase generator (... | 10/19/2010 |
| 7816797 | Method and device for harvesting energy from ocean waves A method and device for generating electricity from ocean waves. The device includes at least one magnetostrictive element and one or more electrically conductive coils or circuits. When the magnetostrictive element is deployed in a body of water, the motion of the ... | 10/19/2010 |
