Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 8186965 | Recovery tip turbine blade A turbine blade includes an airfoil having first and second tip ribs extending along the opposite pressure and suction sides thereof. A tip baffle bifurcates the airfoil tip into two pockets, with a first pocket being laterally open at its aft end to recover leakage... | 05/29/2012 |
| 8182232 | Wind generator blade with divergent trailing edge A wind turbine blade having an aerodynamic profile (5) with a leading edge (11), a trailing edge (13) and suction and pressure sides (17, 19) between the leading edge (11) and the trailing edge (13) which has, on at least on... | 05/22/2012 |
| 8167572 | Dynamically tuned turbine blade growth pocket A turbine blade growth pocket provides a feature to measure blade growth due to engine operation while maintaining dynamic characteristics of the turbine blade within acceptable limits by providing a variable radius fillet between the pocket and a side rail of the p... | 05/01/2012 |
| 8128376 | High performance outboard section for rotor blades Blades for rotorcraft are designed and/or implemented with rotor blades having a swept portion that occupies at least 20-40% of a length of the blade. Forward and aft sweeps are contemplated, with up to 20° or more of sweep. The swept portion preferably has a thick... | 03/06/2012 |
| 8100661 | Wind turbine rotor blade and wind turbine rotor A wind turbine rotor blade is provided which includes a root end and a tip end located opposite the root end. A leading edge extends from the root end to the tip end. A trailing edge extends from the root end to the tip end. A span direction is defined by a line ext... | 01/24/2012 |
| 8029241 | Wind turbine rotor blade with aerodynamic winglet A wind turbine includes a plurality of rotor blades, with each blade having a root portion connected to a rotor hub and an airfoil portion extending radially outward from the rotor hub. The airfoil portion further includes a main foil section and a winglet pivotally... | 10/04/2011 |
| 8007243 | Blower including blades attached to a boss A blower that can reduce noise and enhance efficiency by improving a blade structure of the blower used for, for example, an outdoor equipment of an air conditioner. An impeller includes plural blades attached to a peripheral surface of a boss at intervals in a peri... | 08/30/2011 |
| 7976283 | Noise reducer for rotor blade in wind turbine A rotor blade assembly for a wind turbine is disclosed. The rotor blade assembly includes a rotor blade having surfaces defining a pressure side, a suction side, a leading edge, and a trailing edge extending between a tip and a root. The rotor blade assembly further... | 07/12/2011 |
| 7972115 | Moving blade for a turbomachine A turbomachine moving blade without a top platform, the blade including a fastener root (110) surmounted by an airfoil (112) that presents an end face (114), a pressure-side face (116), and a suction-side face, said fastener root and said... | 07/05/2011 |
| 7931444 | Wind turbine with rotor blades equipped with winglets and blades for such rotor A wind turbine includes a rotor with wind turbine blades each having a root end connected to a hub of the wind turbine and a tip end, the tip end of each of which being equipped with a winglet extending a distance in a direction perpendicularly to a longitudinal dir... | 04/26/2011 |
| 7922455 | Steam-cooled gas turbine bucker for reduced tip leakage loss A bucket for a steam turbine includes an airfoil portion having a radially outer tip, the radially outer tip having a thermal barrier coating applied thereto, and wherein the thermal barrier coating is resurfaced to form at least one ridge along the radially outer t... | 04/12/2011 |
| 7918653 | Rotor blade trailing edge assemby and method of use A method of assembling a rotor blade for a turbine is provided that includes forming a rotor blade trailing edge by coupling a suction side terminus to a pressure side terminus and positioning a trailing edge assembly between the suction side terminus and the pressu... | 04/05/2011 |
| 7901188 | Wind turbine blade A wind turbine blade transversely subdivided into two or more separate modules (1-2) consisting of outer aerodynamic walls or hulls (4) and a longitudinal inner reinforcing structure (3). The modules include coupling means at the ends of ... | 03/08/2011 |
| 7854595 | Wind turbine blade tip shapes A blade for a wind turbine includes a chord of length “c” positioned with a leading edge tip chord angle and trailing edge tip chord angle of between approximately 45 and 75 degrees; a tip having a shear web plane radii distribution in the ranges of | 12/21/2010 |
| 7841836 | Rotor blade for a wind power plant The present invention concerns a rotor blade for a wind power plant having an aerodynamic profile. A rotor blade for the wind power plant has an aerodynamic profile having a pressure side and a suction side. A wind power plant rotor blade tip is curved in a directio... | 11/30/2010 |
| 7802968 | Methods and apparatus for reducing load in a rotor blade A blade includes a plurality of first fibers, wherein each of the plurality of first fibers is angled between about 5° and about 35° with respect to a pitch axis of the blade, and a plurality of second fibers, wherein each of the plurality of second fibers is angl... | 09/28/2010 |
| 7789631 | Compressor of a gas turbine and gas turbine A compressor, particularly a high-pressure compressor, of a gas turbine, particularly of an aircraft engine, includes at least one rotor and a number of blades (11, 12), which are assigned to the or to each rotor and which rotate together with the respective ... | 09/07/2010 |
| 7607893 | Counter tip baffle airfoil A turbine blade includes an airfoil having first and second tip ribs extending along the opposite pressure and suction sides thereof. The tip ribs are spaced apart between the leading and trailing edges of the airfoil to include a tip baffle. The baffle extends chor... | 10/27/2009 |
| 7547193 | Rotor blade assembly with high pitching moment airfoil section for a rotary wing aircraft A main rotor blade assembly with a high negative pitching moment airfoil section having a pitching moment coefficient beyond (more negative than) −0.035 at Mach Numbers below 0.80 and a blade taper of 1:5 or greater.. The main rotor blade preferably limits blade t... | 06/16/2009 |
| 7540716 | Rotor blade for a wind power plant The present invention concerns a rotor blade for a wind power plant having an aerodynamic profile comprising a rotor blade leading edge and a rotor blade trailing edge. The invention also concerns a rotor blade tip for a rotor blade having an aerodynamic profile wit... | 06/02/2009 |
| 7513750 | Rotor blade tip planform A main rotor blade incorporating a rotor blade tip region having a tip chord and a tip taper such that the ratio of the main rotor blade chord to the tip chord is approximately 0.30. The tip taper ratio preferably providing an approximately 28% area of reduction in ... | 04/07/2009 |
| 7484937 | Compressor blade with reduced aerodynamic blade excitation The compressor blades of an aircraft engine are, in at least one natural-vibration critical area, designed such that at the blade leading edge (6), the leading edge shock wave (14) attaches to the leading edge (6), as a result of which a laminar... | 02/03/2009 |
| 7438522 | Fan A fan has an air conveying conduit (16) and a fan wheel (22) arranged therein, which wheel is rotatable about a central axis (25) and is formed with a central hub (20; 120) having an outer periphery (27) on which fan blades (26 | 10/21/2008 |
| 7435048 | Drain pump, and air conditioner provided therewith A drain pump is provided that reduces the operating noise when the head is low. The drain pump has a pump casing, and an impeller. The pump casing has a drain inlet for sucking in drain water at a lower end part and a drain outlet for discharging drain water at a si... | 10/14/2008 |
| 7425113 | Pressure and current reducing impeller A secondary air system providing a regeneration air pump wherein the vanes of the impeller are tapered from a point along the length of the vane to the root of the vane inside the air pump. The tapered vanes create desirable flow characteristics. The tapered vanes c... | 09/16/2008 |
| 7416386 | Heat dissipation apparatus A heat dissipation apparatus. A fan frame includes an air inlet, an air outlet, a passage, and a curved expansion portion. The air inlet is opposite the air outlet. The passage is between the air inlet and the air outlet, guiding airflow from the air inlet to the ai... | 08/26/2008 |
| 7413408 | Vibration-reducing and noise-reducing spoiler for helicopter rotors, aircraft wings, propellers, and turbine blades A spoiler attached to helicopter main rotor blades, tail rotor blades, propellers, aircraft wings, and machined into turbine blades, that reduces vibration and silences their operation. Also, when added to a substantial part of the trailing edges of its rotor blades... | 08/19/2008 |
| 7393182 | Composite tip shroud ring A gas turbine engine includes a tip shroud ring rotatably supported on a last stage blade assembly in a turbine. The tip shroud ring is formed entirely of a fiber reinforced ceramic matrix composite material to provide a very light weight tip shroud ring, but also a... | 07/01/2008 |
| 7381027 | Fan motor A fan motor having a small thickness and its impeller's blades formed to have a longer length in the diametrical direction than a width in the axial direction. Since the blade of the fan motor has a tooth structure or chamfers at its edge end in the diametrical dire... | 06/03/2008 |
| 7377751 | Cooling fan and shroud with modified profiles A cooling system includes a cooling fan with an outlet and an inlet and a shroud surrounding at least a portion of the cooling fan. The cooling fan includes a plurality of fan blades, and each fan blade includes an inlet portion and an outlet portion that define an ... | 05/27/2008 |
| 7374403 | Low solidity turbofan A turbofan includes a row of fan blades extending from a supporting disk inside an annular casing. Each blade includes an airfoil having opposite pressure and suction sides extending radially in span between a root and tip and axially in chord between leading and tr... | 05/20/2008 |
| 7360995 | Vertical axis windmill A vertical axis windmill in which a support frame is provided as a wind power dam to form a plurality of shaft-installation sections, and in which a plurality of vertically long blades each of which has a tilted part at the upper and lower ends respectively are disp... | 04/22/2008 |
| 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 |
| 7338011 | Method making it possible to prevent vibration of a rudder of an aircraft and aircraft using this method A method for preventing vibration of a rudder of an aircraft may have, on a lateral aerodynamic surface of the aircraft's rudder, a protruding aerodynamic element capable of generating an aerodynamic effect tending to rotate the rudder about its articulation axis. A... | 03/04/2008 |
| 7331758 | Blower A blower includes: an impeller on which there are arranged axial flow blades 40 mounted at circumferential intervals to an outer peripheral surface of a boss; a case surrounding the impeller; and a bell mouth cylindrically constricted to guide gas into the ca... | 02/19/2008 |
| 7331765 | Two-sweep rotary wing blade with limited taper ratio A rotary wing blade of limited taper ratio, comprising in succession along a reference radius: an inner zone; a forward-swept zone; and a back-swept zone. In addition, the beginning of the forward-swept zone lies in the range 0.47 to 0.65 times the reference radius ... | 02/19/2008 |
| 7316502 | Mixing blade, blending apparatus, and method of mixing A blade for mixing a material includes a disk comprising a plastic or composite material. The disk may have one or more circumferentially-spaced openings extending through the disk from a substantially flat top surface to a substantially flat bottom surface. The ope... | 01/08/2008 |
| 7290986 | Turbine airfoil with curved squealer tip An airfoil for a gas turbine engine includes a root, a tip, a leading edge, a trailing edge, and opposed pressure and suction sidewalls extending generally along a radial axis. The airfoil includes a tip cap extending between the pressure and suction sidewalls; and ... | 11/06/2007 |
| 7281900 | Cascade rotor blade for low noise Low-noise airfoils and methods of reducing noise. One embodiment provides an aerodynamic member that includes two body portions coupled to each other. The second body portion includes a plurality of airfoil members in a fixed relationship with each other. Optionally... | 10/16/2007 |
| 7281894 | Turbine airfoil curved squealer tip with tip shelf An airfoil for a gas turbine engine includes a root, a tip, a leading edge, a trailing edge, and opposed pressure and suction sidewalls extending generally along a radial axis. The airfoil includes a tip cap extending between the pressure and suction sidewalls; and ... | 10/16/2007 |
