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| Number | Title | Issue Date |
| 8157532 | Wind turbine blade with anti-noise devices A wind turbine comprising at least a blade (11) having an aerodynamic profile with a leading edge (13), a trailing edge (15) and suction and pressure sides between the leading edge (13) and the trailing edge (15) that includes an a... | 04/17/2012 |
| 8133032 | Rotor blades A rotor blade has a tip with an outer face including at least two channels which each extend to an outlet in the vicinity of the trailing edge. Accordingly, gas leakage around the tip must cross at least three walls, at least in the vicinity of the uncovered turning... | 03/13/2012 |
| 8052394 | Rotor blade of a wind energy unit The invention relates to a rotor blade (60) of a wind energy plant with a top side (suction side) and a bottom side (pressure side) wherein profiles (21, 22, 23, 24, 25) with a front edge and a back edge (62) in cross-section are designed along ... | 11/08/2011 |
| 8047801 | Wind turbine blades with aerodynamic vortex elements A wind turbine blade had a suction side surface and a pressure side surface. A plurality of vortex elements are formed on at least one of the suction side or the pressure side surfaces. The vortex elements have an upwardly inclined wind face and a downwardly incline... | 11/01/2011 |
| 8016568 | Wind turbine blade Disclosed is a blade including a blade body including a leading edge and a trailing edge, and at least one trailing edge cavity defined by a blade area disposed in at least partial alignment with the trailing edge, the at least one cavity extending a desired depth i... | 09/13/2011 |
| 7927078 | Wind turbine blade tip vortex breakers A wind turbine includes a tower supporting a drive train with a rotor, at least one blade extending radially from the rotor; and a plurality of substantially flat flaps extending substantially perpendicular from a suction surface of the blade and along different cho... | 04/19/2011 |
| 7641446 | Turbine blade A turbine blade 29 for a gas turbine engine 10 having an axis 20, the turbine blade 29 comprising: an aerofoil 30 including a high pressure surface 36, a low pressure surface 34, a root portion 38 and a tip sur... | 01/05/2010 |
| 7604461 | Rotor blade for a wind turbine having aerodynamic feature elements A rotor blade for a wind turbine includes a surface having a plurality of aerodynamics feature elements formed therein. The elements for influencing an airflow at the surface during operation of the wind turbine and arrayed in a two dimensional pattern. ... | 10/20/2009 |
| 7566203 | Rotor blade The invention relates to a rotor blade, preferably for use in a wind turbine, comprising a rotor wing. In accordance with the invention, at least one shaped member projecting beyond the surface of the rotor wing is arranged close to the free end of the rotor wing. | 07/28/2009 |
| 7384242 | Impeller blade and fan An impeller blade includes an elongate impeller blade body having opposing proximal and distal ends, opposing first and second edges extending from the proximal end to the distal end, and opposing upper and lower sides. The lower side includes a major generally conc... | 06/10/2008 |
| 7351039 | Compressor rotor blade A compressor rotor blade (1) includes a rotor blade (2), a platform (3) that adjoins the rotor blade (2) and blade footing (4) that adjoins the platform (3). The rotor blade (4) is embodied so as to be massive, withou... | 04/01/2008 |
| 7347672 | Rotor disk balancing device, disk fitted with such a device and rotor with such a disk A rotor disc includes a rim and a balancing device, which includes housings formed in the rim, and balancing masses housed in at least some of the housings. ... | 03/25/2008 |
| 7323791 | Louvered horizontal wind turbine A wind turbine, including: a rotatable frame; a plurality of airfoils extending in a direction parallel to an axis of rotation of the rotatable frame; and an enclosure surrounding the rotatable frame, wherein the enclosure comprises a plurality of moveable members c... | 01/29/2008 |
| 7275914 | Pelton bucket Pelton bucket, Pelton wheel and a method of making and using the Pelton bucket. The Pelton bucket includes at least one exit edge. The at least one exit edge includes one of at least one partially concavely curved portion and at least one straight portion. The metho... | 10/02/2007 |
| 7270519 | Methods and apparatus for reducing flow across compressor airfoil tips An airfoil for a gas turbine engine includes a leading edge, a trailing edge, a tip, a first side wall that extends in radial span between an airfoil root and the tip, wherein the first side wall defines a first side of said airfoil, and a second side wall connected... | 09/18/2007 |
| 7251592 | Boundary layer transition model A method for analyzing performance of an airfoil includes determining: an estimated laminar separation location; a freestream turbulence intensity; a momentum thickness; and a turbulence length scale. Based upon the freestream turbulence intensity, momentum thicknes... | 07/31/2007 |
| 7217102 | Countering laser shock peening induced airfoil twist using shot peening A gas turbine engine blade is laser shock peened by laser shock peening a thin airfoil of the blade, forming a laser shock induced twist in the airfoil, and shot peening a portion of the airfoil to counter the laser shock induced twist in the airfoil. The shot peeni... | 05/15/2007 |
| 7210910 | Enhancements to high efficiency ceiling fan Twisted ceiling fan blades for low, medium and high speed operation of less than approximately 250 rpm. The novel blades twisted blades can be configured for 60″ and 64″ diameter fans, and have less blades (3 for example) than conventional flat type bladed fans ... | 05/01/2007 |
| 7207772 | Compressor for an aircraft engine On a compressor with compressor blades, a flow transition fixation mechanism (4) is provided on the suction side (2), approximately parallel to the leading edge (3) and upstream of the compression shocks acting upon the blade, which prevents the... | 04/24/2007 |
| 7160084 | Blade of a turbine The invention relates to a turbine blade (31) having a root region (33), a tip region (37) and a blade airfoil (35), a rounded portion (73) being formed between the root region (33) and the blade airfoil (35), and rel... | 01/09/2007 |
| 7147433 | Profiled blades for turbocharger turbines, compressors, and the like A rotor and an apparatus including a rotor are provided. For example, the apparatus can be a turbine or compressor having a housing in which the rotor rotates while gas is circulated therethrough. The rotor has a plurality of radially extending blades, and each blad... | 12/12/2006 |
| 7118329 | Tip sealing for a turbine rotor blade An unshrouded rotor blade 24 comprising an aerofoil 28, said aerofoil 28 having a leading edge 34, a trailing edge 36, a pressure surface 30 and a suction surface 32, there being provided at a radially outer extremity... | 10/10/2006 |
| 7112043 | Compressor impeller thickness profile with localized thick spot An air foil includes a leading edge, a trailing edge, a hub contour, and a tip contour, whereby the hub contour and tip contour extend between the leading and trailing edges to define a blade surface therebetween. A localized thick spot is disposed between the leadi... | 09/26/2006 |
| 7063510 | Centrifugal fan Slim-profile centrifugal fan made up of a housing, a motor component, and a airflow-generating component. A disk portion, a cylindrical portion, a plurality of posts, and a plurality of blades compose the airflow-generating component. The plurality of posts project ... | 06/20/2006 |
| 7044712 | Axial-flow fan This present invention relates to an axial-flow fan including a central hub connected with a driving shaft of a motor, and a plurality of blades extending radially along the circumference of the hub for blowing air toward an axial direction, the plurality of blades ... | 05/16/2006 |
| 7033131 | Fan blade for a gas-turbine engine For material reduction, a fan blade made of solid material for a gas-turbine engine is provided in the area of the blade tip with at least one cavity (5) extending from the face of the blade tip. Thus, apart from the aspect of weight saving, the vibration amp... | 04/25/2006 |
| 7025642 | Boat propeller A boat propeller includes a hub having a front, back, and an axis of revolution extending therebetween. A plurality of blades provide and extend from the hub between the front and back. Each blade includes a surface adjacent of the hub disposed at an oblique angle t... | 04/11/2006 |
| 6994523 | Air blower apparatus having blades with outer peripheral bends An air blower apparatus is provided including a hub which is a center of rotation, and a plurality of blades disposed along an outer peripheral surface of the hub and having leading and trailing edges and where both an outer peripheral end of the leading edge and an... | 02/07/2006 |
| 6984100 | Component and turbine assembly with film cooling A component includes a wall with a cold and a hot surface. At least one film-cooling hole extends through the wall for flowing a coolant from the cold to the hot surface. The film-cooling hole defines an exit site in the hot surface. At least one flow modifier is fo... | 01/10/2006 |
| 6948910 | Spiral-based axial flow devices Axial flow devices using rigid spiral band profiled blade catenaries attached variably along and around an axially elongated profiled hub, of axially oriented profile section sequences 75 mapped relative to truncated cones-of-generation. Upon rotation and lub... | 09/27/2005 |
| 6939108 | Cooling fan with reinforced blade A circulatory device comprising a large diameter fan having reinforced fan blades with a tapered airfoil shape is disclosed. The fan blades may be formed using an extrusion method of fabrication, wherein each fan blade may comprise a reinforced trailing edge with a ... | 09/06/2005 |
| 6905312 | Method of manufacturing an integral rotor blade disk and corresponding disk A method of manufacturing a blisk comprises the steps of cutting a disk to a rough shape comprising a hub with a plurality of blade blanks projecting radially therefrom, machining each blade blank by tangential milling using a tool with a rotation spindle perpendicu... | 06/14/2005 |
| 6884029 | Heat-tolerated vortex-disrupting fluid guide component A vortex-reducing fluid guide component is disclosed. The fluid guide component includes a base portion and an upstanding body portion. An internally-cooled blending element extends between the base portion and a leading edge of the body portion. The blending elemen... | 04/26/2005 |
| 6877959 | Surface aeration impellers The invention is an improved surface aeration impeller for use in a liquid filled tank which particularly increases the surface turbulence and the entrainment of gas into the liquid surface. The impeller is an axial flow impeller and may be either a pitched blade tu... | 04/12/2005 |
| 6872048 | Fan with reduced noise generation Axial flow fan propellers are provided with a roughened portion along the trailing edge of the fan blades on the pressure side of the blade to minimize tonal acoustic emissions generated by laminar boundary layer vortex shedding. The roughened portion may be provide... | 03/29/2005 |
| 6830436 | Wind turbine provided with nacelle The blade structure of a wind turbine which has enough strength for sporadic large load and increased durability. The blade can be formed into a thinner blade profile, with which blade performance is improved, increased efficiency of the wind turbine is attainable, ... | 12/14/2004 |
| 6796771 | Axial-flow fan An axial-flow fan having a high fan efficiency and high performance is provided by improving a fluid flow on the rear edge side of a blade tip without deteriorating the fluid flow on the front side of the blade tip, and reducing loss of horsepower without causing a ... | 09/28/2004 |
| 6769883 | Fan with motor ventilation system A fan (10) is disclosed having a downrod (11), a motor (12), a motor housing (13) substantially encasing the motor (12), and blades (14) mounted to the motor housing (13). Each blade (14) has an air intake scoo... | 08/03/2004 |
| 6742989 | Structures of turbine scroll and blades The improvements are made in the turbine scroll and the turbine blades. The scroll structure for the radial turbines is characterized by the foregoing scroll having a scroll width ratio between the width in the radial direction (ΔR) and the width in the direction o... | 06/01/2004 |
| 6712582 | Centrifugal fan A centrifugal fan mounted in a laptop computer is assembled to include a casing having an intake opening and a horn-shaped outlet opening for increasing the air outflow, an impeller rotatably mounted in the casing with a reduced diameter and bared inner space for in... | 03/30/2004 |
