Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7866938 | Vertical axis windmill with guiding devices The instant invention deals with the solution to technical flaws of existing vertical axis windmills in which the wind strikes simultaneously on inward and outward facing sides of rotor blades which reduce efficiency. Hence, this invention, i.e., the vertical axis w... | 01/11/2011 |
| 7510366 | Vertical axis type wind power station A vertical axis type wind power station and a blade manufacturing process, which can stabilize the turning motions of blades and can raise the power generation efficiency by lightening the blades to smoothen the turning motions of the blades; a structure and method ... | 03/31/2009 |
| 7436083 | Up-wind type windmill and operating method therefor A structure of an upwind type wind turbine and the operating method thereof capable of preventing the occurrence of damage of the blades by evading excessive irregular loads from acting on the blades in the slanting direction in the event of power failure when stron... | 10/14/2008 |
| 7368828 | Wind energy system A wind energy system comprising a queue of turbines housed in a horizontal air conduit. The inlet end of the conduit opens into a wind collector assembly, which preferably comprises in part downwardly extending earthen slope, such as a hillside or embankment. The wi... | 05/06/2008 |
| 7364406 | Segmented vertical axis air rotor and wind generator apparatus An apparatus is provided for generating electricity in response to a fluid flow. The apparatus includes a top rotor element coupled to a center axis with an arm extending substantially perpendicular to a center axis. The arm moves in response to the fluid flow to ro... | 04/29/2008 |
| 7364399 | Wind power plant of cyclone type and method of obtaining energy from such A wind power plant having a tower open at the top and provided with a side inlet for the wind for generating a cyclone in the tower and a substantially horizontal turbine that has inlets through the base and an outlet to the center of the cyclone in the tower and th... | 04/29/2008 |
| 7362004 | Wind turbine device A hybrid blade wind turbine device formed of at least a pair of straight outer airfoil blades, and a pair of inner helical wing blades, as supported for rotation within a safety protective cage structure, which wind turbine can be mounted in the vertical, horizontal... | 04/22/2008 |
| 7334994 | Automatic self-feathering and resetting sail restraint for migler's vertical axis wind turbine An improved sail restraint for Migler's vertical axis wind turbine in which excessive wind speed automatically causes the sails to be feathered, protecting them from wind damage, and, when the wind speed is reduced to an allowable level, the improved sail restraint ... | 02/26/2008 |
| 7331752 | Method of conversion of continuous medium flow energy and device for conversion of continuous medium flow energy A device and method for conversion of the energy of medium flows are provided. The proposed device and method ensure suppression of the vortex streams in the flow on the leg of its motion along the radially converging trajectories and concentration of the flow energ... | 02/19/2008 |
| 7329965 | Aerodynamic-hybrid vertical-axis wind turbine An aerodynamic-hybrid, vertical-axis wind turbine which includes a rotor airfoil and stator blade combination which maximizes energy production by increasing wind velocity and pressure while eliminating back pressure and improving the laminar flow of wind both aroun... | 02/12/2008 |
| 7329099 | Wind turbine and energy distribution system A new design of vertical axis wind turbine is disclosed based on a dome structure using dome struts as blades that work in concert to produce rotational motion. The stability and low cost of the new design allows the turbine to function in low wind speed regimes as ... | 02/12/2008 |
| 7323792 | Wind turbine A wind turbine including an open hub, foldable blades attached to the rim of the hub, and a mechanism for tilting the turbine is disclosed. ... | 01/29/2008 |
| 7319279 | Wind-driven electrical power generating apparatus A power generating apparatus comprises an electrical power generating device, a vane-carrying structure and a mounting flange. The electrical power generating device includes a body and a power input shaft extending from within the body. The body is generally cylind... | 01/15/2008 |
| 7314346 | Three bladed Savonius rotor A Savonius three bladed vertical axis wind turbine rotor has operational characteristics superior to those of conventional three bladed rotors. The blades have high curvature and a high skew factor, for example a curvature of greater than 7:1 (e.g. 2:1-5:1), and a s... | 01/01/2008 |
| 7303369 | Magnetic vertical axis wind turbine A lift and drag-based vertical axis wind turbine in which the vertical axis and foils mounted thereon are magnetically levitated above the turbine's base, thereby reducing friction within the system. The foils or vanes are three-dimensionally shaped about the vertic... | 12/04/2007 |
| 7288850 | System and apparatus for emergency backup power generation An emergency backup power generation system includes a housing comprising a main body portion, a top cap, and a bottom cap. Inner and outer surfaces and the main body portion, the top cap, and the bottom cap define a generally hollow interior volume within the inner... | 10/30/2007 |
| 7287954 | Omni directional baffled wind energy power converter apparatus and method A wind turbine apparatus, comprising an upright shaft defining an upright axis, at least two blades operatively connected to the shaft to rotate about the shaft axis as the blades are wind driven about the axis, the lowermost portion of each blade being offset, azim... | 10/30/2007 |
| 7258527 | Vertical axis wind engine The present invention is to provide a vertical axis wind engine comprising at least one arm each having its center rotatably coupled to a vertical axis mounted on a base on the ground, each pair of the upper and lower arms adapted to define an airfoil receiving spac... | 08/21/2007 |
| 7245039 | Apparatus and method for generating hydrogen gas through the use of wind power This invention teaches an apparatus, method, means, and computer readable media to address the problem of the inconsistent, unreliable nature of wind, and in particular low-wind speeds, through utilizing a blower and/or startup assist to aid in turning an electricit... | 07/17/2007 |
| 7242108 | Wind-actuated electric power alternator A wind-actuated electric power alternator is disclosed. The wind-actuated electric power alternator includes an impeller enclosure having a generally triangular cross-sectional configuration. An impeller is rotatably mounted in the impeller enclosure. An alternator ... | 07/10/2007 |
| 7241105 | Watercraft with vertically collapsible vertical axis wind turbine and propeller flexible drive shaft A vertically collapsible vertical axis wind turbine may be used on land, or on a watercraft (e.g. a multihull such as a catamaran). The turbine may include a substantially vertical shaft; at least two vane supports mounted by the shaft; and at least two vertically c... | 07/10/2007 |
| 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 |
| 7230348 | Infuser augmented vertical wind turbine electrical generating system A wind turbine for generating electrical power having a vertical “Savonius rotor type” wind rotatable turbine with multiple fixed pitch blades and a rotatable wind inlet duct having an identical number of multiple infuser-shaped aerodynamic guides as the pitch b... | 06/12/2007 |
| 7189051 | Wind power plant A wind power plant includes four main elements: a foundation (29), at least one supporting structure (21), a carrying construction (23) having a vertical axis (25) and being rotatable around the vertical axis, and at least one rotor (4... | 03/13/2007 |
| 7156609 | Method of making complex twisted blades with hollow airfoil cross section and the turbines based on such A reactive turbine, each blade of which approximates a helical shape that is constructed with readily available conventional manufacturing techniques. The blades are constructed in discrete straight sections that, when joined, approximate a helix or any other effici... | 01/02/2007 |
| 7153090 | System and method for passive load attenuation in a wind turbine In accordance with certain embodiments, a wind turbine blade includes an outer skin and an internal support structure. The skin has a closed airfoil shape and includes an outer surface, an inner surface, and opposite sides along a length of the blade. The internal s... | 12/26/2006 |
| 7144214 | Rotor supporting structure of windmill for power generation A windmill 10 includes a frame 11 and a rotor 12 provided rotatively around the vertical shaft center. The rotor includes bosses 23, 24 located above and below, plural transversal blades 25 extending radially from the bosses, longi... | 12/05/2006 |
| 7132760 | Wind turbine device A hybrid blade wind turbine device formed of at least a pair of straight outer airfoil blades, and a pair of inner helical wing blades, as supported for rotation within a safety protective cage structure, which wind turbine can be mounted in the vertical, horizontal... | 11/07/2006 |
| 7118344 | Wind power plant for generating energy A wind power system (1) for generating power is proposed, comprising a rotor which is axially flowed through, is rotatably held on a shaft (2) and is provided with blades (3), as well as a guide device (5) which accelerates the air flow t... | 10/10/2006 |
| 7112893 | Power generating wind turbine A turbine system includes a rigid frame including a plurality of elongated rectilinear beams. The rigid frame spans across a top portion of a cooling tower and is axially registered with the passageway for receiving a unidirectional convection air stream upwardly th... | 09/26/2006 |
| 7109599 | Omni-directional wind turbine electric generation system An omni-directional wind turbine electric generation system including a wind rotor carrying wind responsive vanes which on one surface exert an aerodynamic lifting force and on the other a blocking force both of which exert a torque in the same rotational sense, and... | 09/19/2006 |
| 7098553 | Traffic-driven wind generator A wind-capturing electrical generator device comprising a plurality of generators is driven by wind created by traffic passing in close proximity at high speeds. The device preferably uses horizontally or vertically mounted Savonius-type or helical-turbine-type roto... | 08/29/2006 |
| 7098552 | Wind energy conversion system A wind energy conversion system includes upper and lower wind turbines having counter-rotating blade assemblies supported for rotation about a vertical rotation axis, with each blade assembly carrying a rotor for rotation past a stator to produce an electrical outpu... | 08/29/2006 |
| 7094017 | Vertical shaft driving device for vertical wind mills or the like and electric power generator using the same A vertical shaft driving device wherein a plurality of rotary blades (8a, 8b, 8c and 8d) each including a blade (10) supported on a planetary shaft are equally arranged circumferentially of a central sha... | 08/22/2006 |
| 7077628 | Wind machine with independent fabric A wind machine comprises a plurality of fabrics that are removeably installed on a rotatable carrier. The carrier axis of rotation may be either horizontal or vertical. The carrier has pairs of first and second arms that support opposite ends of a fabric net. Side s... | 07/18/2006 |
| 7040859 | Wind turbine A wind turbine operable as either a vertical axis wind turbine or a horizontal axis wind turbine is disclosed. ... | 05/09/2006 |
| 7011501 | Energy generating system A system (1) designed to generate energy with the aid of, primarily, sea currents, comprising a rotation body (4) having a front inlet side (2) and a rear outlet side (3), and at least one transfer member (6) connected between the ... | 03/14/2006 |
| 7008171 | Modified Savonius rotor A novel modification of a Savonius rotor used as a wind turbine provides an exhaust channel in each vane. The vane of the modified Savonius rotor is formed into an “S” shape. The air that enters a given end of the vane exits that end through the new exhaust chan... | 03/07/2006 |
| 6966747 | Wind turbine having airfoils for blocking and directing wind and rotors with or without a central gap A wind turbine device of increased efficiency is comprised of a set of fixed airfoils that direct wind into a rotor having a plurality of blades. The fixed airfoils may extend to the ground to increase the amount of wind directed into the rotor and may be manufactur... | 11/22/2005 |
| 6962478 | Vertical axis windmill A vertical axis windmill has an immovable, hollow circumferential frame having a plurality of peripheral openings, and rotatable turbine arranged inside the frame and connectable to a generator of electric energy, the turbine having a plurality of vanes each having ... | 11/08/2005 |
