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| Number | Title | Issue Date |
| 8186056 | Turbine vane restoration system A system and method for reconfiguring a turbine vane. In at least one embodiment, the system may be used to straighten an airfoil of a turbine vane segment to remove lean, twist, or racking, or any combination thereof. The airfoil may be straightened by fixing porti... | 05/29/2012 |
| 8156649 | Gas turbine hot gas component repair method A gas turbine engine hot gas component repair method for defects that do not extend through the thickness of the component is provided. First defects are removed by machining a cavity in the surface of a component. Coupons, fittable within the cavities are manufactu... | 04/17/2012 |
| 8146250 | Method of replacing a composite airfoil A method of replacing a portion of a composite airfoil in a turbine. The method comprises the steps of providing a turbine with a plurality of composite airfoils mounted on a wheel. At least one of the composite airfoils has a core made of a non-plastic material and... | 04/03/2012 |
| 8141249 | Heat treating apparatus and method of using same An apparatus and method for heat treating the welded area of a repaired gas turbine engine component uses first and second heating elements. The heating elements each include an insulating tube supported by a support rod and wrapped with a conducing wire. One of the... | 03/27/2012 |
| 8127442 | Compressor blade flow form technique for repair A method for repairing a turbine engine component is provided. The method broadly comprises the steps of providing a turbine engine component having an airfoil portion, applying a coating to the airfoil portion, and restoring a tip portion, a chord, and surfaces of ... | 03/06/2012 |
| 8122601 | Methods for correcting twist angle in a gas turbine engine blade A method of correcting a twist angle of a gas turbine engine blade includes measuring an existing twist angle of the blade, applying a first angular load to a first end of the blade; and measuring a repaired twist angle of the blade. The first angular load applied t... | 02/28/2012 |
| 8122600 | Fan and compressor blade dovetail restoration process A method for restoring blade dovetails to their original shape comprising the steps of removing damaged material from a blade dovetail at a damage site, physically depositing a metal at the damage site in an amount sufficient to replace the removed damaged material,... | 02/28/2012 |
| 8108997 | Methods and apparatus for replacing objects on horizontal shafts in elevated locations An apparatus for stabilizing a shaft in an essentially horizontal position while an anchoring object at one end of the shaft is replaced without removal of an object at the opposite end of the shaft that would otherwise tend to destabilize the shaft from its essenti... | 02/07/2012 |
| 8091228 | Method repair of turbine blade tip A method of repair of a turbine blade involves inspecting a turbine blade having an internal cavity and a cap. The cap is removed and replaced with a replacement cap. The replacement cap has an opening. The opening provides access to the internal cavity of the inter... | 01/10/2012 |
| 8091229 | Method of repairing a subsurface void or damage for a wind turbine blade A procedure for repairing subsurface defects in a shell member laminate of a wind turbine blade includes detecting the location and boundary of the subsurface defect and drilling a fill hole from an external surface of the laminate into the defect proximate to a bou... | 01/10/2012 |
| 8091227 | Method of repairing an airfoil surface This invention relates to the repair and removal of erosion or impact damage using hand sandable elastomeric coatings on a curved substrate, particularly such surfaces as the leading edge of the airfoil. Specialized applicators and methods of use are also disclosed.... | 01/10/2012 |
| 8020295 | Methods for dimensionally restoring a fastener for a gas turbine engine Gas turbine engines systems and related methods involving dimensionally restored fasteners are provided. In this regard, a representative method for dimensionally restoring a mechanical fastener for a gas turbine engine includes: providing a mechanical fastener; and... | 09/20/2011 |
| 8011097 | Method, system, and computer software code for repairing a transition section of an engine A method for restoring a crack formed within a turbo charger engine transition section, the method including preparing a crack in the transition section to receive a material within the crack, applying the material within the crack, and retaining structural integrit... | 09/06/2011 |
| 8006381 | Method of modifying an existing casting mold for a turbine moving blade A method of modifying an existing casting mold for a turbine moving blade having a shroud band segment with an initial coupling geometry for coupling with a further shroud band segment, the coupling geometry having an initial coupling angle of the shroud band segmen... | 08/30/2011 |
| 8006380 | Method of replacing damaged aerofoil A method of replacing a damaged blade (12A) of an integrally bladed rotor assembly (10) including a disc (14) and a plurality of blades (12) extending outwardly from the disc (14) includes the steps of; removing the damaged blade (... | 08/30/2011 |
| 7984547 | Method for manufacturing and/or repairing components for gas turbines A method is for manufacturing and/or repairing components, e.g., blades and blade segments, for gas turbines, e.g., for aircraft engines, by laser-powder build-up welding. Laser-powder build-up welding is performed using at least one substructure, the material build... | 07/26/2011 |
| 7934315 | Method of repairing shrouded turbine blades with cracks in the vicinity of the outer shroud notch A method of repairing a damaged notch fillet radius of a turbine blade shroud includes a replacement notch fillet radius and a hardface nugget. The damaged notch fillet radius is blended out and a hardface structure positioned proximate the damaged notch fillet radi... | 05/03/2011 |
| 7921556 | Fully bladed closure for tangential entry round skirt dovetails A fully bladed closure design for a turbine wheel with tangential entry. A set of the final three buckets including a bladed closure bucket are disposed about a wheel margin with two buckets adjacent to the bladed closure bucket secured to the wheel margin by the do... | 04/12/2011 |
| 7895744 | Method of replacing wind turbine equipment A method of replacing wind turbine equipment, which can reduce the cost for replacing large equipment disposed in a nacelle, is provided. The method is characterized by including a winch-hoisting step for winching up to a nacelle a reciprocating winch that is used f... | 03/01/2011 |
| 7854064 | Enhanced weldability for high strength cast and wrought nickel superalloys A method for repairing a turbine engine component comprises the steps of providing a turbine engine component formed from a nickel-based superalloy, removing any defects from the turbine engine component, the removing step comprising subjecting the turbine engine co... | 12/21/2010 |
| 7849595 | Method for repairing an impeller The present invention provides a method of weld repairing an impeller by use of a weld restraining fixture. The fixture is used to sandwich the impeller between a base plate and a top ring such that a plurality of tangs located on the top ring rest on the plurality ... | 12/14/2010 |
| 7845076 | Method for reducing stresses resulting from partial slot dovetail re-machining for generator rotor Re-machining a generator rotor tooth dovetail results in a transition zone at an end of the partial re-machined cut, between a newly cut load surface and an original load surface of the rotor tooth. The transition zone is susceptible to stresses that may adversely a... | 12/07/2010 |
| 7836594 | Method for restoring airfoil tip contour A blade is repaired by utilizing a super abrasive machining quill and/or wheel to form the contour and restore the height of the blade. By utilizing super abrasive machining, the contour and height can be quickly returned to desired dimensions by removing unwanted a... | 11/23/2010 |
| 7836595 | Method and system for disengaging a shrink coupling on a turbine generator A system and associated method for disengaging a shrink coupling that secures a shaft to a drive train component, such as a gearbox, includes a reaction plate erected around the shaft at a location displaced from the shrink coupling, with the reaction plate being an... | 11/23/2010 |
| 7836593 | Cold spray method for producing gas turbine blade tip A quantity of particles (28) may be cold-sprayed toward the distal surface (22) of a turbine blade (6) at a temperature below a melting point of the particles at a velocity sufficiently high to cause at least a portion of the particles to adhere... | 11/23/2010 |
| 7827686 | Method for the maintenance of gas turbines A method for the maintenance of gas turbines is provided. According to the method, a gas turbine is dismantled and modules, structural components, or component parts of the aeroplane mechanism are subsequently inspected and/or repaired. Then, an aeroplane mechanism ... | 11/09/2010 |
| 7810237 | Method for repairing and/or modifying component parts of a gas turbine A method is for repairing and/or modifying component parts of a gas turbine. First, at least one, particularly damaged section of the component part that is to be repaired is cut out of the component part. In addition, if it does not exist, a data record is generate... | 10/12/2010 |
| 7784180 | Method and blade repair element for blisk repair or new blisk manufacture In the repair of a blisk or blisk drum, the damaged airfoils are completely cut off a low-stress nodal line of the respective blade, except for a blade stump (2), and are each replaced by a new blade repair element (3) of a same shape and size which is... | 08/31/2010 |
| 7770292 | Engine core stand arrangement and method of removal and transportation of an engine core Transportation of larger diameter gas turbine engines can be problematic. In such circumstances it is known to separate the fan assembly (30) from the engine core (1) and other parts to facilitate transportation. Separation of the fan assembly (30 | 08/10/2010 |
| 7761990 | Method of repairing a stationary airfoil array directing three-dimensional flow A method of replacing an individual damaged compressor stator airfoil includes machining an oversized slot through the stator casing, removing the damaged airfoil, and joining a sleeve to the replacement airfoil and stator casing. The oversized slot creates sufficie... | 07/27/2010 |
| 7761989 | Methods for repairing gas turbine engine components A method for repairing a gas turbine engine component includes the steps of repairing one of a suction side or a pressure side of the component; repairing internal geometry of the component after one of the suction side or the pressure side of the component is repai... | 07/27/2010 |
| 7735222 | Apparatus to remove material from a turbine wheel in-situ A tool capable of removing material is applied to a turbine wheel cooling slot. Material is removed from a selected portion of the cooling slot with the tool. And, stress concentrations are reduced within the slot through the removal of material. ... | 06/15/2010 |
| 7726021 | Labyrinth seal repair A method for repairing damaged fins in a labyrinth seal without the use of welding or metallurgical bonding by removing a section of the shaft containing the damaged fins, and providing a sleeve with replacement fins. ... | 06/01/2010 |
| 7690111 | Method and apparatus for repairing turbine rotor A method for repairing a rotor of a turbine includes providing a rotor having a groove portion defined by a circumferential portion of the rotor. The circumferential portion of the rotor is removed to create an opening to provide access to the groove such that the o... | 04/06/2010 |
| 7685711 | Microwave fabrication of airfoil tips A method of producing a metallic component includes: providing a body made of a first alloy; providing a preform comprising a metallic powder made of a second alloy and formed in the shape of an extension of the body; and heating the preform with microwave energy to... | 03/30/2010 |
| 7669326 | Workpiece with a recess which is closed from the exterior by means of a solder film and method for closing a recess by means of a solder film It is known from the prior art that holes in a workpiece are filled completely with a solder powder, which leads especially in the case of large holes to the formation of cracks within the solder due to the large volume filled in once the solder cools off after sold... | 03/02/2010 |
| 7653996 | Method of repairing a crack in a turbine component A method of repairing a crack in a component comprising a base material, in particular in a gas turbine blade, a suspension, which comprises a carrier liquid and at least one solid in the form of nanoparticles of the same material as the base material, being applied... | 02/02/2010 |
| 7653995 | Weld repair of superalloy materials A method of weld repairing a superalloy material at ambient temperature without causing cracking of the base material. A superalloy material such as CM-247 LC, as is commonly used in gas turbine blade applications, is subjected to an overage pre-weld heat treatment ... | 02/02/2010 |
| 7653994 | Repair of HPT shrouds with sintered preforms A method for repairing a gas turbine stationary flowpath shroud. The method comprises providing a superalloy gas turbine stationary flowpath shroud that has previously been in service. The method further comprises preparing a restoration coating for application to t... | 02/02/2010 |
| 7644498 | Method of modifying the coupling geometry in shroud band segments of turbine moving blades A method of modifying a coupling geometry in a shroud band segment of a turbine moving blade includes the following steps: calculation of a modified coupling geometry; removal of shroud band material situated outside the modified coupling geometry; and/or applicatio... | 01/12/2010 |
