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| Number | Title | Issue Date |
| 8177517 | Blade for a wind turbine rotor A blade (1) for a rotor of a wind turbine having a substantially horizontal′ rotor shaft, said rotor comprising a hub, from which the blade extends substantially radially from said rotor when mounted. The blade (1) has a chord plane (K) extending bet... | 05/15/2012 |
| 8100667 | Turbomachinery disc A turbomachinery disc, (e.g. a fan) has a primary axis of rotation and an axial flow direction X parallel to the primary axis of rotation. The disc has an annular diaphragm extending from proximate a blade land to a free inner radius. The diaphragm is asymmetrical a... | 01/24/2012 |
| 8075280 | Composite blade and method of manufacture A method of making a composite blade that is attachable to a rotating shaft using a conventional metal blade attachment. A blade is formed from a composite material with a blade root at one end thereof. A metallic member having an external shape conforming to a conv... | 12/13/2011 |
| 7938628 | Composite-steel hybrid mast for rotorcraft A composite-steel hybrid mast for a rotorcraft includes a tubular, steel portion having an internal surface defining a space therein and a composite portion disposed within the space defined by the internal surface of the steel portion and held in a fixed spatial re... | 05/10/2011 |
| 7850430 | Turbomachine rotor blade A turbomachine rotor blade comprising a root (14) mounted in a channel of the periphery of a disk and held by an annular flange (18) which presses on the root (14) of the blade (12), this root comprising a stop (44) engaging in a m... | 12/14/2010 |
| 7507075 | Mistake proof identification feature for turbine blades An identification feature is used to unmistakably identify internal features present in different generations of turbine blade designs. The identification feature is located on a root portion of the turbine blade and protrudes to provide a visually identifiable feat... | 03/24/2009 |
| 7442007 | Angled blade firtree retaining system A blade root retaining system for attachment of a turbine blade to a turbine disc of a gas turbine engine comprises a blade root having at least one projection on each of opposite sides thereof, the projection extending from a leading edge to a trailing edge of the ... | 10/28/2008 |
| 7438532 | Blade/disk dovetail backcut for blade/disk stress reduction (9FA+e, stage 2) Blade load path on a gas turbine disk can be diverted to provide a significant disk fatigue life benefit. A plurality of gas turbine blades are attachable to a gas turbine disk, where each of the gas turbine blades includes a blade dovetail engageable in a correspon... | 10/21/2008 |
| 7431565 | Method of repairing a threaded generator rotor blower assembly A method of repairing a generator blower hub assembly (12) and rotor blade (10) removed from the generator blower hub assembly (12) where the rotor blade (10) has fatigued material in threads of a threaded blade root (14). The meth... | 10/07/2008 |
| 7425118 | Mask for shielding impellers and blisks during automated welding A mask is provided for shielding a radially extending edge of an impeller vane during a weld repair process, where the impeller vane extends radially and axially outwardly from a shaft. The mask comprises a hub and a flange. The hub has an outer surface and an openi... | 09/16/2008 |
| 7419362 | Blade/disk dovetail backcut for blade/disk stress reduction (9FA+e, stage 1) Blade load path on a gas turbine disk can be diverted to provide a significant disk fatigue life benefit. A plurality of gas turbine blades are attachable to a gas turbine disk, where each of the gas turbine blades includes a blade dovetail engageable in a correspon... | 09/02/2008 |
| 7419361 | Blade/disk dovetail backcut for blade/disk stress reduction (7FA+e, stage 2) Blade load path on a gas turbine disk can be diverted to provide a significant disk fatigue life benefit. A plurality of gas turbine blades are attachable to a gas turbine disk, where each of the gas turbine blades includes a blade dovetail engageable in a correspon... | 09/02/2008 |
| 7351040 | Methods of making wind turbine rotor blades A method of manufacturing a root portion of a wind turbine blade includes, in an exemplary embodiment, providing an outer layer of reinforcing fibers including at least two woven mats of reinforcing fibers, providing an inner layer of reinforcing fibers including at... | 04/01/2008 |
| 7341430 | Vane wheel for torque converter and manufacturing method A vane wheel for torque converter with a plurality of blades formed integrally with a shell in a casting process is disclosed. The blade tilts relative to an axial direction of the vane wheel and has an inner surface located on a positive pressure side thereof and a... | 03/11/2008 |
| 7334995 | Turbine blade assembly and method of manufacture Aspects of the invention are directed to a turbine blade assembly and an associated method of manufacture. The turbine blade assembly can include: (a) a unitary structure having an airfoil and a primary root portion; (b) a separately-formed platform; and (c) a secon... | 02/26/2008 |
| 7334999 | Turbomachine rotor including at least one disk reinforced by a composite ring A turbomachine rotor including at least one disk having a ring constituted, for example, by a winding of metal-coated silicon carbide or alumina yarn. According to the invention, the composite ring is received in a closed annular cavity, e.g. defining by machining a... | 02/26/2008 |
| 7331539 | Noise reduced food waste disposer A food waste disposer having devices to reduce noise is disclosed. The disposer has a food conveying section, a motor section, and a grinding section. To reduce the emitted noise that may result when food waste impacts the various components of the grinding section,... | 02/19/2008 |
| 7309215 | Axial locking device for turbine blades A turbine blade locking device for axial retention of a turbine blade (1) having a blade root (3) inserted in an axially extending profiled lobe slot (5) of a turbine disk (4), wherein, a sealing fin of a blade platform (10) includ... | 12/18/2007 |
| 7306434 | Reduction of co-efficient of friction to reduce stress ratio in bearings and gas turbine parts A rotor blade, a rotor disc (24) or load bearing assembly having at least one bearing surface (22) for contact with a corresponding bearing surface (28). At least one selected area of the bearing surface (30,32) which, in operation, is an... | 12/11/2007 |
| 7300255 | Laminated turbomachine airfoil with jacket and method of making the airfoil An improvement for a turbomachinery blade having an airfoil portion, a neck portion, and a root portion, the neck portion extending from the root portion, and the airfoil portion extending from the neck portion, and the root portion being tear-drop shaped, includes ... | 11/27/2007 |
| 7293963 | Removable tail rotor boot A boot provides for removable attachment to a tail rotor assembly to flexibly protect the interior of the tail rotor blade assemblies. The boot includes a first fastener strip mounted adjacent a first boot edge and a second fastener strip mounted adjacent a second b... | 11/13/2007 |
| 7252477 | Rotating blade body A rotating blade body is provided that can restrain vibrations of rotating blades effectively. The rotating blade body comprises a rotor disc, a plurality of rotating blades being assembled so as to extend from the outer circumference of the rotor disc in a radial p... | 08/07/2007 |
| 7252481 | Natural frequency tuning of gas turbine engine blades A tuning notch is defined preferably in the back of a blade root to tune the blade natural frequency in a gas turbine engine. ... | 08/07/2007 |
| 7247000 | Weld shielding device for automated welding of impellers and blisks The present invention provides an apparatus for use in automated welding repairs, particularly those repairs intended for impellers, blisks, and similar structures. There is provided a welding shield which is shaped to fit securely within valleys of an impeller. An ... | 07/24/2007 |
| 7244101 | Dust resistant platform blade A gas turbine engine rotor blade includes an airfoil, platform, shank, and dovetail integrally joined together. A dust escape hole extends through the platform adjacent a fillet bridging the platform and shank to bleed dust therefrom during operation. ... | 07/17/2007 |
| 7238008 | Turbine blade retainer seal An annular blade retention plate for axially retaining rotor blades within slots of a rotor disk. The plate includes an annular plate web extending radially outwardly from a radially inner plate hub to a plate rim and an annular radially outwardly open outer channel... | 07/03/2007 |
| 7220106 | Francis wheel and hydraulic machine comprising one such wheel A Francis runner that includes a crown, a band and blades which extend between the crown and the band. An angle (β24) between a linear speed (U, D224) of one of the blades and a median of the blade at the trailing edge, has a value between 20 ... | 05/22/2007 |
| 7217099 | Coated forward stub shaft dovetail slot A compressor forward stub shaft comprising a plurality of axially spaced, annular rows of dovetail grooves, at least a first and a second of the plurality of rows having dovetail slots coated in part with an anti-wear coating. ... | 05/15/2007 |
| 7214034 | Control of leak zone under blade platform A system for controlling a leakage zone under platforms of blades of a turbomachine blade-wheel by liners having edges that flare radially inwards, and that are disposed in inter-blade cavities defined by the platforms, by upstream and downstream radial walls of the... | 05/08/2007 |
| 7210904 | Runner blade for low specific speed Francis turbine A runner for use as retrofit in existing Francis turbine water path includes a set of nine profiles covering crown (hub) to skirt (band) area is to produce power efficently at deteriorated head condition of site. Each of the nine profiles is made of two curves, name... | 05/01/2007 |
| 7207776 | Cooling arrangement A cooling arrangement comprises a support (20) for a plurality of blades (22). The support (20) comprises a plurality of blade mounting members (28) provided between adjacent blades (22). The blades (22) are mounted upon the... | 04/24/2007 |
| 7204677 | Countering laser shock peening induced blade twist A method for laser shock peening a gas turbine engine blade includes laser shock peening a thin airfoil of the blade, forming a laser shock induced twist in the airfoil, and altering a root of the blade to counter the laser shock induced twist in the airfoil. The al... | 04/17/2007 |
| 7195460 | Francis turbine A Francis runner and a hydraulic turbine equipped with such a runner, wherein the runner includes a ceiling, a belt, and blades which extend between the ceiling and the belt and which define liquid flow channels therebetween. A ratio (e/L) of a maximum thickness Ce)... | 03/27/2007 |
| 7189056 | Blade and disk radial pre-swirlers A deflector arrangement is provided for improving turbine efficiency by imparting added tangential velocity to a leakage flow entering the working fluid flowpath of a gas turbine engine. ... | 03/13/2007 |
| 7182572 | Impeller assembly An impeller assembly has a hollow body, multiple main blades and multiple booster blades. The main blades are mounted around the body to define multiple flow channels between the main blades. The boosting blades are mounted around the body at the bottom edge and eac... | 02/27/2007 |
| 7165944 | Compressor blade with dovetail slotted to reduce stress on the airfoil leading edge A blade of an axial compressor comprising: an airfoil is disclosed that has a leading edge and a root; a platform attached to the root of the airfoil; a dovetail attached to a side of the platform opposite to the airfoil; a neck of the dovetail adjacent the platform... | 01/23/2007 |
| 7163375 | Lightened interblade platform for a turbojet blade support disc An interblade platform for a blade support disc on a turbojet blower includes a deflecting part with a lower face provided with a first fixing lug provided with a first orifice for the passage of a first fixing stud and a second fixing lug provided with second and t... | 01/16/2007 |
| 7163378 | Embedding element to be embedded in the end part of a windmill blade, a method producing such an embedding element as well as embedding of such embedding elements in a windmill blade An embedding element (11) for embedment in the root of a wind turbine rotor blade (15) of a fibre composite material, said embedding element being elongated and having a first end portion (1) and a second end portion (2) and provided with... | 01/16/2007 |
| 7156621 | Blade fixing relief mismatch A blade fixing and blade mounting slot arrangement for a gas turbine engine has a mismatch fit along a portion of the length of the blade fixing and slot where contact stress would otherwise be maximal. ... | 01/02/2007 |
| 7153099 | Inter-vane platform with lateral deflection for a vane support of a turbine engine An inter-vane platform, for a vane support disk of a turbine engine fan, includes a central part of one piece with the support disk between two adjacent vanes, and two lateral parts, forming extensions to two lateral edges of the central part, and each designed in s... | 12/26/2006 |
