And Removing Damaged Material Patents (Class 29/402.11)
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Patent number: 8333006Abstract: A method for removing a crack in an electromechanical rotor, including: forming a plurality of slots on a periphery of a core portion of an electromechanical rotor along an axial direction thereof; inserting coils into the slots, respectively; forming a plurality of wedges for maintaining the coils in the slots, respectively; and forming a cut hole at at least a part of the core portion from an outer surface of the core portion toward the side of a center axis thereof so as to contain a crack along a circumferential direction thereof.Type: GrantFiled: December 27, 2006Date of Patent: December 18, 2012Assignee: Kabushiki Kaisha ToshibaInventors: Koji Matsuyama, Hideki Chiba, Hiromichi Ito, Yomei Yoshioka, Kazuhiro Saito, Yasuo Kabata, Ryoji Nagano, Hiroaki Koinuma, Kaname Hirai, Toshio Kitajima
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Patent number: 8266800Abstract: A method of adding material to a nickel-based superalloy component, such as a gas turbine rotor disk, without damaging the underlying material and without creating an unacceptable level of cracking. The method is advantageously applied in the repair of Alloy 706 turbine rotors having experienced operating failures in the steeple region of the disk. Once the damaged material is removed, replacement nickel-based superalloy material is added using a welding process that protects both the underlying material and the replacement material. The replacement material may be added by welding, with the preheat temperature maintained no lower than 100° C. below the aging temperature of the deposited alloy and with the interpass temperature maintained below the solution annealing temperature of the alloy. Alternatively, the replacement material may be preformed and welded to the original material using a friction welding process.Type: GrantFiled: September 10, 2004Date of Patent: September 18, 2012Assignee: Siemens Energy, Inc.Inventors: David Scott Segletes, Brij B. Seth, Srikanth C. Kottilingam, Peter Jon Ditzel
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Publication number: 20120198676Abstract: A method for repairing or reconditioning a damaged component includes working the damaged component by removing a damaged region from the damaged component while creating a cutout corresponding to the damaged region so as to provide a worked component. The worked component is measured and a computer-aided design (CAD) model of a replacement piece based on the measuring and is configured to be inserted into the cutout of the worked component is created. The replacement piece is produced based on the CAD model.Type: ApplicationFiled: February 3, 2012Publication date: August 9, 2012Applicant: ALSTOM TECHNOLOGY LTDInventors: Lukas Emanuel Rickenbacher, Simone Hoevel, Adriaan Bernardus Spierings, Raphael Schmid, Stefan Buob
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Patent number: 8234766Abstract: A method and a device are provided for reworking or re-machining the surface and, in particular, the slide tracks of a slip ring while the slip ring is in a built-in state in an appliance or machine using the slip ring. The slip ring is rotated by a drive provided in the appliance for rotating the slip ring during normal operation, or by an auxiliary drive, while a surface-removing cutting tool or surface deforming tool held in a tool holder or carrier adapted to be attached to the appliance or machine is applied to the surface of the moving slip ring to re-machine or recondition the surface. The invention avoids the necessity of dismantling the appliance or machine for the purpose of removing the slip ring for repairs.Type: GrantFiled: November 5, 2008Date of Patent: August 7, 2012Assignee: Schleifring und Apparatebau GmbHInventors: Herbert Staffler, Ronald Suchanecki, Fabian Schuenke, Harry Schilling
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Patent number: 8230569Abstract: A method for repairing damaged bolt holes in a flange having a plurality of circumferentially spaced bolt holes therein, with each bolt hole defining a center axis and the flange defining an outer diameter edge. The method includes removing parent material of the flange in a first pattern, and metallurgically joining a replacement detail to the parent material of the flange a location where the parent material of the flange was removed in the first pattern. The first pattern is bounded by first, second, third and fourth points. The first point corresponds to the center axis of a first of the plurality of bolt holes, the second point corresponds to center axis of a second of the plurality of bolt holes, and the third and fourth points are defined at the outer diameter edge of the flange circumferentially spaced from each other.Type: GrantFiled: January 20, 2009Date of Patent: July 31, 2012Assignee: United Technologies CorporationInventors: Ganesh Anantharaman, Gerard Dame
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Publication number: 20120163535Abstract: In a second grid, X-ray absorbing portions and X-ray transparent portions extending in a Y direction are alternately arranged in an X direction. After the manufacture of the second grid, a defective portion is detected in the second grid. A rectangular area to be cut out is set along the X and Y directions so as to enclose this defective portion. By cutting out the rectangular area, a cutout is formed. A micro grid, which is smaller than the cutout, is fitted into the cutout such that two adjoining sides of the micro grid are in contact with two adjoining sides of the cutout. A gap left between an outline of the cutout and the micro grid is filled with Sn—Pb as an X-ray absorbing material.Type: ApplicationFiled: November 29, 2011Publication date: June 28, 2012Applicant: FUJIFILM CORPORATIONInventor: Yasuhisa KANEKO
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Patent number: 8205334Abstract: A method for repairing a component having first and second major surfaces, a thickness between the major surfaces, and an edge, is characterized by utilizing a template to determine if the component is suitable for repair, and forming a slot cut entirely through the thickness of the component. The slot extends inward from the edge of the component, has an open end at the edge of the component, a closed end within the component, a width, a radius at the closed end, and chamfered edges at the open end. Forming the slot includes forming an initial cut with a first cutting surface from the edge of the component at least to the defect, finishing the initial cut to the width and the radius with a second cutting surface, resulting in a finished cut, and chamfering the edge of the finished cut with a third cutting surface.Type: GrantFiled: November 14, 2005Date of Patent: June 26, 2012Assignee: United Technologies CorporationInventors: Peter E. Leibfried, John P. Arrigoni, Dale A. Simard, Philip J. Dunne, William G. Sorvillo, Sr.
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Publication number: 20120110811Abstract: A repair process for a composite material panel that forms part of a fuselage, wings, or stabilizers of an aircraft, with the panel having large dimensions and including irregular contours in some areas and edges prone to damages occurring from handling and assembly of the panel. The process a) locates the damage in the element of the composite material panel; b) sands the area that includes the damage in an area larger than the damage, makes a cut in the panel, having the cut of a same form as a piece that will serve to repair panel; c) places the piece in the cut, so that it is perfectly flush with the panel to be repaired; and d) attaches the piece to the composite material panel.Type: ApplicationFiled: May 27, 2010Publication date: May 10, 2012Applicant: Airbus Operations, S.L.Inventors: Francisco de Paula Burgos Gallego, Alberto Balsa Gonzalez
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Patent number: 8158903Abstract: In a method of repairing a structural component, especially a stator-side structural component such as a housing or a guide vane ring of a gas turbine, a damaged section is separated-out along a separating line and removed from the structural component, and a new section that replaces the removed damaged section is connected with the structural component by welding along the separating line to produce a weld seam. The damaged section is separated-out from the structural component so as to minimize the length of the separating line and thus the weld seam. Depending on the material thickness distribution of the component along the separating line, material is removed from the structural component to provide the most uniform possible material thickness along the weld seam. After connecting the new section with the structural component by welding, at least the removed material is renewed by laser powder deposit welding.Type: GrantFiled: July 16, 2005Date of Patent: April 17, 2012Assignee: MTU Aero Engines GmbHInventor: Reinhold Meier
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Patent number: 8141239Abstract: A system for changing sleeves that can be pushed onto ink transfer roller cores of a printing machine includes at least one magazine, at least one travel device, and a drive. The magazine includes at least one sleeve mounting device that is movable relative to a frame of the magazine. The travel device is connectable to the magazine so that the magazine is movable in the vertical and/or horizontal direction. The drive, which is a component of the travel device, provides a drive force or drive torque to move the sleeve mounting device relative to the frame of the magazine.Type: GrantFiled: October 5, 2007Date of Patent: March 27, 2012Assignee: Windmoeller & Hoelscher KGInventor: Guenter Rogge
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Patent number: 8127442Abstract: 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 the airfoil portion to original dimensions in a single operation. A system for repairing the turbine engine component is also described.Type: GrantFiled: December 15, 2005Date of Patent: March 6, 2012Assignee: United Technologies CorporationInventors: John F. Mullooly, William M. Rose, David R. Malley, Monika D. Kinstler
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Patent number: 8117724Abstract: A method for joining fluid carrying steel pipes together including the following steps. Identifying a subject pipe section to be replaced and intercepting the fluid flow by fastening stoppers inside of pipe portions upstream and downstream from the subject pipe section. Removing the subject pipe section, leaving in place upstream and downstream pipe portions. Inserting along each of the first and second pipe portions a protective stopper and chamfering the edges of those pipe portions and then mounting first and second sliding sleeves with sealing rings thereover. Removing the protective stoppers from the pipe portions and positioning between those pipe portions a new connection piece. Displacing the first and second sliding sleeves onto the connection piece so that sealing rings are arranged on the connection piece and fixing the sliding sleeves to the pipe portions and to the connection piece.Type: GrantFiled: February 25, 2008Date of Patent: February 21, 2012Assignee: Hera S.p.A.Inventors: Franco Volta, Diego Gallerani
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Patent number: 8108979Abstract: A method of repairing a part, which has a first side, a second side opposite of the first side, and an aperture that makes the part susceptible to cracking, includes the steps of forming a slot in the first side of the part near the aperture, inserting a stiffener into the slot, and attaching at least one repair ply onto the first side of the part to cover the stiffener.Type: GrantFiled: April 24, 2007Date of Patent: February 7, 2012Assignee: United Technologies CorporationInventors: Daniel M. Stadtlander, William F. Bogue, Michael J. Madel, Jr., Brian K. Holland
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Patent number: 8104158Abstract: Detecting inconsistencies proximate a panel splice joint involves trimming a portion of a first panel overlapping a second panel to expose a previously overlapped region of the second panel. The previously overlapped region of the second panel may be inspected to detect any inconsistencies present thereon after trimming the portion.Type: GrantFiled: June 15, 2009Date of Patent: January 31, 2012Assignee: The Boeing CompanyInventors: Joseph F. Floyd, John R. Linn
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Patent number: 8091229Abstract: 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 boundary of the defect. A vent hole is drilled from the external surface of the laminate into the defect proximate to an opposite boundary from the fill hole. A flowable bonding material is injected into the fill hole until the bonding material flows from the vent hole. The repair zone is reinforced with at least one mechanical fastener defined through the laminate either within the boundary of the defect or outboard of the boundary of the defect.Type: GrantFiled: March 8, 2011Date of Patent: January 10, 2012Assignee: General Electric CompanyInventors: Stephen Michael Deak, Scott Gabell Riddell
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Patent number: 8083465Abstract: A method of repairing a turbine exhaust case strut heat shield vane includes removing a damaged portion of the vane, solution heat treating the vane, attaching a replacement section to the vane, and relieving local stresses in an attachment area between the replacement section and the vane.Type: GrantFiled: September 5, 2008Date of Patent: December 27, 2011Assignee: United Technologies CorporationInventors: Eric Herbst, Jeffrey D. Melman
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Patent number: 8056204Abstract: An extraction apparatus (40) for the removal of a riveted fastener (12) from a structure (10) includes a shaft (42) and a cutting element (62). The cutting element (62) is mechanically coupled to the shaft (42) and is configured to cut a portion of the riveted fastener (12). The shaft (42) and the cutting element (62) are configured for insertion through an inner channel (24) of the riveted fastener (12). A method of replacing the riveted fastener (12) from the structure (10) includes inserting the extraction apparatus (40) through the inner channel (24). The extraction apparatus (40) is rotated. A portion of the riveted fastener (12) that extends through the structure (10) is removed. A head (20) of the riveted fastener (12) is also removed from the structure.Type: GrantFiled: August 27, 2010Date of Patent: November 15, 2011Assignee: The Boeing CompanyInventors: John F. Suarez, Bradley G. Weiskittel
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Patent number: 8051544Abstract: A method of replacing an electrical insulator on a conductor-supporting tower includes the steps of providing an elongate beam spanning the tower between a work site and a helicopter accessible site, a trolley movable on the beam between the sites and an insulator cradle detachably supported by the trolley for supporting the insulator during transport between the sites and to and from the tower via helicopter. The cradle is a partially peripherally enclosed, open-topped structure having a floor, an upstanding rear wall, peripheral walls sloping downwardly from the rear wall to a front wall, an opening in the front wall, an elongate slot in the floor extending rearwardly from the opening, the slot having a width greater than the diameter of an insulator shank but less than the diameter of an insulator skirt, the dimensions of the floor allowing an insulator skirt to lie flat thereon.Type: GrantFiled: December 24, 2007Date of Patent: November 8, 2011Assignee: Haverfield International IncorporatedInventor: Larry Graham
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Patent number: 8006380Abstract: 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 (12A) to leave a blade stub (16) projecting from the disc (14); depositing a collar (22) of metal around the blade stub (16) at a position physically separated from the disc (14); attaching a replacement blade (12B) to the stub (16) by linear friction welding; and removing the collar (22). A body (20) of a material may be deposited between the disc (14) and the collar (22) to protect the disc (14) from damage.Type: GrantFiled: May 12, 2005Date of Patent: August 30, 2011Assignee: Rolls-Royce plcInventors: Martin Rawson, Andrew T Webster
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Publication number: 20110173792Abstract: A mailbox door latch retrofitting kit that uses a magnet attached to the interior of the mailbox to magnetically engage the door of a mailbox, or to magnetically engage a metal disk attached to the door of a mailbox. The kit includes a magnet attached to a bracket which is secured to the inside of a mailbox in a manner to permit the magnet to contact the mailbox door. The magnet secures the door of a ferrous-containing mailbox closed. For non-ferrous containing mailboxes, an optional ferrous-containing disk or flat washer is secured to the inside of the mailbox door using double sided tape and aligned for engagement with the magnet.Type: ApplicationFiled: January 18, 2011Publication date: July 21, 2011Inventor: Andre Claude Polizzi
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Publication number: 20110176921Abstract: The invention relates to a method of repairing or of reworking a turbomachine disk comprising, on it's rim, at least one external radial tab with an axial bore to accept an axial pin comprising a head and a shank with a threaded portion, the pin being slipped into the bore in such a way that the head comes to press against one face of the tab through the tightening of a nut on to the shank with threaded portion against the opposite face of the tab, said pin forming a retaining means to keep a tab secured to a component attached to the rim. It is characterized in that a spot face (123B; 223B; 323B) is machined in the tab around the bore (123A; 223A; 323A) corresponding to the wearing zone, and a replacement pin (100) comprising a flange (111A) pressing against the surface of said spot face, of a diameter greater than that of the head (111) is fitted.Type: ApplicationFiled: July 16, 2009Publication date: July 21, 2011Applicant: SNECMAInventors: Herve Gignoux, Eric Gvozdenovic, Gael Loro, Alain Jacques, Michel Bassot
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Patent number: 7981519Abstract: A method and system of repairing an engine part having a cracked metal skin bonded to a honeycomb core includes removing a portion of the honeycomb that corresponds to a cracked portion of the metal skin. A crack in the metal skin originates from an edge of the engine part. A portion of the honeycomb is removed to form a slot in the honeycomb beginning at the edge of the part. A doubler is inserted into the slot in the honeycomb and is attached to an underside of the metal skin to form a lap joint between the doubler and the metal skin. In one embodiment, the portion of the metal skin that includes the crack remains. In an alternative embodiment, the cracked portion of the metal skin is removed and a metal patch is attached to the doubler such that the patch replaces the removed metal skin.Type: GrantFiled: April 11, 2008Date of Patent: July 19, 2011Assignee: United Technologies CorporationInventors: Brian K. Holland, William F. Bogue, Ron I. Prihar
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Patent number: 7966707Abstract: A method for forming or remanufacturing a component to have an internal space. A refractory metal blocking element is formed, in situ, with at least a portion to be within the internal space. A material is added by at least one of welding, laser cladding, and diffusion brazing, the blocking element at least partially blocking entry of the material to the internal space. The blocking element is removed.Type: GrantFiled: May 6, 2005Date of Patent: June 28, 2011Assignee: United Technologies CorporationInventors: Edward R. Szela, Norman Pietruska
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Patent number: 7934315Abstract: 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 radius is removed. A replacement notch fillet radius is formed with weld filler and the hardface nugget is welded to at least a portion of the replacement notch fillet radius.Type: GrantFiled: August 11, 2006Date of Patent: May 3, 2011Assignee: United Technologies CorporationInventor: Timothy A. Milleville
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Patent number: 7934303Abstract: A hydraulic pump can be remanufactured to save the investment in its components that are not seriously worn or failed. Some of the worn components, such as the pump barrel and yoke, can be salvaged by replacing or rebuilding the worn features. In particular, a worn internal spline on the pump barrel can be replaced by a spline insert that is threaded to the pump barrel and includes a new internal spline. A worn actuation tab on a yoke for contacting an actuating piston can be replaced by adding a new tab wear button.Type: GrantFiled: June 9, 2005Date of Patent: May 3, 2011Assignee: Caterpillar Inc.Inventors: Usama Y. Awwad, Trent A. Simpson
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Patent number: 7921533Abstract: The refractory protected, replaceable insert for a gasifier includes a replaceable floor edge insert that is formed with a predetermined mating profile that is complementary to a finished mating profile of the gasifier floor. The geometry of the mating profiles of the replaceable floor edge insert and the gasifier floor permit removable engagement between the floor edge insert and the mating profile of the gasifier floor. The replaceable floor edge insert is protected by a ring-like arrangement of hanging refractory bricks that each include an appendage. Each brick appendage covers a portion of the inner radial edge of the replaceable floor edge insert and also covers an upper surface portion of an underlying quench ring, thus prolonging the life of the floor and the quench ring. A refractory ceramic fiber paper can be provided between the hanging brick and the floor edge and quench ring.Type: GrantFiled: October 4, 2006Date of Patent: April 12, 2011Assignee: GE Energy (USA) LLCInventors: John Corwyn Groen, John D. Winter
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Patent number: 7886422Abstract: A method is provided for reclaiming a suspension from a disk drive head gimbal assembly (HGA). An ultrasonic probe is applied to the HGA's read/write head slider on a side opposite that of its solder balls. Ultrasonic oscillations are transmitted through the ceramic slider to the side with the solder balls. The oscillations break the brittle intermetallic compound of the slider balls and free the slider. The ultrasonic energy also weakens the epoxy adhesive between the slider and suspension. The method can be used with heat to further weaken the solder balls and adhesive.Type: GrantFiled: August 5, 2008Date of Patent: February 15, 2011Assignee: Magnecomp CorporationInventors: Haiming Zhou, Haijun Gao, Fei He
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Publication number: 20100316458Abstract: A composite structure containing an out-of-tolerance area is restored using an automated material removal method. The location of an out-of-tolerance area within the structure is determined by non-destructive inspection and a volume of the structure to be removed is selected based on the location of the out-of-tolerance area. An automatic material removal tool is programmed and used to remove the selected volume of material. The volume of removed material may be is replaced by an integrated patch.Type: ApplicationFiled: June 16, 2009Publication date: December 16, 2010Inventors: Lawrence S. Lindgren, Scott W. Lea, Gary E. Georgeson
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Patent number: 7827689Abstract: A new, faster and more efficient process to replace heating walls and ceilings in coke oven batteries. Thus, when replaced, at least one heating wall is constructed of thermally stable non-expanding large size modular cast modules from end to end and the ceiling adjacent the heating wall is constructed of thermally stable non-expanding large modular cast blocks.Type: GrantFiled: January 16, 2007Date of Patent: November 9, 2010Assignee: Vanocur Refractories, L.L.C.Inventors: James D. Crane, Robert A. Bloom
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Patent number: 7810237Abstract: 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 generated for a replacement part that is to be produced. The replacement part is subsequently produced with the aid of a rapid manufacturing process. Subsequently, the replacement part produced is integrated into the component part that is to be repaired.Type: GrantFiled: April 1, 2004Date of Patent: October 12, 2010Assignee: MTU Aero Engines GmbHInventors: Anja Lange, Jens Lange, Uwe Schulze
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Publication number: 20100239698Abstract: Disclosed is a method and apparatus for the refurbishing of compaction tooling components, particularly the tips and heads of compaction punches.Type: ApplicationFiled: June 9, 2010Publication date: September 23, 2010Inventor: Luka Gakovic
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Patent number: 7793398Abstract: A method of removing aircraft mastic includes contacting a cutting head with a body of aircraft mastic within a fuel tank of an aircraft, and vibrating the cutting head with a pneumatic vibrator to cut away the mastic without scratching the metal components to which the mastic is adhered.Type: GrantFiled: May 11, 2009Date of Patent: September 14, 2010Assignee: AerowingInventors: Laurent Dumortier, Jacques Samenayre, Olivier Mantaux, David Lavigne
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Publication number: 20100200304Abstract: Abrasive tip for abrasive tool and method for forming and replacing thereof are disclosed. The abrasive tip facilitates easy and quick attachment to an abrasive tool.Type: ApplicationFiled: February 10, 2010Publication date: August 12, 2010Applicants: SAINT-GOBAIN ABRASIVES, INC., SAINT-GOBAIN ABRASIFSInventors: Ignazio Gosamo, Sebastien Marcel Robert Douveneau
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Patent number: 7761989Abstract: 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 repaired; and repairing the other of the suction side and the pressure side of the component after the internal geometry of the component is repaired, wherein a backing material is utilized to preserve the internal geometry of the component when the other of the suction side and the pressure side of the component is being repaired.Type: GrantFiled: November 22, 2005Date of Patent: July 27, 2010Assignee: United Technologies CorporationInventors: Andrew J. Lutz, John Finn
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Patent number: 7752741Abstract: An assembly mechanism is provided to press an inner stator into a receiving space of an outer stator. The assembly mechanism includes a pressing unit and a first positioning plate. The pressing unit includes a supporting device to support the outer stator, and a pressing device movable relatively to the supporting device. The first positioning plate is attached to a top of the outer stator. The first positioning plate defines an opening forming a clearance fit with the inner stator. The opening receives the inner stator and guides the inner stator to move into the receiving space of the outer stator under a pressing action of the pressing device. An assembly method is also provided.Type: GrantFiled: June 5, 2009Date of Patent: July 13, 2010Assignee: Foxnum Technology Co., Ltd.Inventors: An-Zheng Yang, Yi-Cheng Su
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Patent number: 7739794Abstract: A method includes shrink fitting a ring member about a railroad wheel body and metallurically bonding the ring member to the railroad wheel body. A wheel assembly includes an inner portion obtained from a worn railroad wheel, a ring member disposed about the inner portion, and suitable electroplating material disposed on at least one of the faying surfaces. The wheel assembly may be heated under suitable conditions to provide diffusion bonding across interfacing faying surfaces to produce an integral wheel structure. Appropriate quenching, tempering, and finishing processes may be utilized to obtain desired properties. An article formed thereby includes an inner body portion obtained from a worn railroad wheel and a metallurically bonded outer circumferential portion. The outer portion may comprise a composition selected for desired wear characteristics.Type: GrantFiled: February 29, 2008Date of Patent: June 22, 2010Assignee: General Electric CompanyInventor: Thomas Edward Mantkowski
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Patent number: 7712216Abstract: A restoration process for restoring surface porosity defects resulting from the casting process in metal cast products. The areas of a cast product having surface porosity defects are identified and the areas not containing surface porosity defects are masked using an adhesive, reusable, rubberized mask. The masked surface is subsequently cleaned and a metal spray is applied to the surface porosity defects. The mask is removed and the restored surface porosity defects are hand finished to create a cast product having less than 0.05% surface porosity.Type: GrantFiled: December 13, 2006Date of Patent: May 11, 2010Assignee: Brunswick CorporationInventors: Douglas M. Woehlke, Raymond J. Donahue, Kevin R. Anderson
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Publication number: 20100102159Abstract: A method of rebuilding used cores comprising the steps of; cutting a used core substantially down the center at a midway cut thereby creating a left core and a right core. Further installing an extension unit in between the left core and right core, thereby forming a lengthened rebuilt core. Further, cutting the damaged ends off the rebuilt core to a selected finished length. The rebuilt core includes a left core obtained from a donor core; a right core obtained from a donor core; an extension unit sandwiched between the left core and the right core for rigidly joining together the left and right cores by connecting to one end of each of the cores.Type: ApplicationFiled: October 9, 2009Publication date: April 29, 2010Inventor: Daniel Kewin
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Patent number: 7690111Abstract: 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 opening, immediately adjacent the groove, is narrower than the groove. A guide block may be extended into a receiving slot separating a first protruding surface from a second protruding surface of the rotor such that a weld area slot of the guide block extends over at least a portion of the opening. The opening may be welded adjacent the guide block to close at least a portion of the opening.Type: GrantFiled: April 14, 2005Date of Patent: April 6, 2010Assignee: Mechanical Dynamics and Analysis, LLCInventors: James Harvey Coffey, Andrew Otto Ruehs
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Publication number: 20090307891Abstract: A tool is disclosed for remotely inspecting and/or treating welds, pipes, vessels and/or other components used in reactor coolant systems or other process applications to, among other things, mitigate stress corrosion cracking in the welds, pipes, vessels and/or other components. The tool is placed at the entrance to a pipe or vessel and walks into the pipe or vessel to a pre-selected weld, pipe or vessel location or other component. Upon reaching the pre-selected weld, pipe or vessel location or other component, the tool anchors itself, then advances an end effector to inspect and/or treat the pre-selected weld, pipe or vessel location or other component.Type: ApplicationFiled: June 17, 2008Publication date: December 17, 2009Applicant: GE-Hitachi Nuclear Energy Americas LLCInventors: Henry Offer, Hsueh-Wen Pao, William Dale Jones
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Patent number: 7621033Abstract: A specialized tool is provided for the removal of components in a microwave module in which a fixed tool having a channeled tip is positioned adjacent the component to be removed, with hot gas from the channeled tip melting the epoxy or solder and with the module forced against the fixed tool to remove it.Type: GrantFiled: September 2, 2004Date of Patent: November 24, 2009Assignee: BAE Systems Information and Electronic Systems Integration Inc.Inventors: Richard A. Rochford, Robert F. Madej
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Publication number: 20090252987Abstract: A method of repairing a metal component of a turbine engine includes removing the existing protective coating and cleaning the surface. The surface is then inspected for intergranular attack (IGA) and other damage by the nondestructive technique of thermal acoustic imaging (TAI). The surface containing IGA and other damage is repaired and then recoated with the protective coating and returned to service.Type: ApplicationFiled: April 2, 2008Publication date: October 8, 2009Applicant: United Technologies CorporationInventor: William H. Greene, JR.
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Patent number: 7591057Abstract: A method of repairing spline and seal teeth of a mated component is disclosed. The method includes a low energy input weld to deposit a repair material on the non-worn, non-pressure face of the splines while minimizing the HAZ grain size. The splined area of the component is then remachined to the original spline contour by removing original material from the worn, pressure face of the splines and excess repair material to produce a mated component with radially re-clocked splines that have original component material on the pressure face of the teeth.Type: GrantFiled: April 12, 2005Date of Patent: September 22, 2009Assignee: General Electric CompanyInventors: Troy Lance Finton, Thomas Joseph Kelly, Kenneth Eric Lutz
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Publication number: 20090232615Abstract: A clamp apparatus and method of using the apparatus that allows for successful restoration of the exhaust manifold attachment to the exhaust piping without damaging the exhaust manifold casting and avoiding the inherent need to remove the exhaust manifold from the motor to achieve the restoration, is described. In practicing exemplary embodiments of the method the existing damaged studs may be removed in whole or in part from the exhaust manifold. Some exemplary embodiments of the clamp may include a frame that includes an aperture that is adapted to be secured around a protrusion of an exhaust manifold. Additionally, the clamp may include a fastener secured to the frame that is adapted to join with an exhaust pipe flange having mating holes for receiving the fastener or each clamp. Two clamps are used in one exemplary embodiment.Type: ApplicationFiled: March 16, 2009Publication date: September 17, 2009Inventor: Curtis G. Mallory
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Patent number: 7587818Abstract: A damaged gas turbine blade which has previously been in service, and which is made of a base metal, is furnished. Any damaged material is removed from the damaged blade tip. The damaged blade tip is weld repaired with a nickel-base superalloy that is more resistant to oxidation resistance than is the base metal in the operating environment of the tip-repaired gas turbine blade. The method does not include any step of coating a lateral surface of the repaired blade tip with a non-ceramic coating after the step of weld repairing.Type: GrantFiled: December 23, 2004Date of Patent: September 15, 2009Assignee: General Electric CompanyInventors: Mark Daniel Gorman, Warren Davis Grossklaus, Jr.
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Publication number: 20090194247Abstract: A method for repairing a metallic hollow body including at least one damaged portion to be repaired in a wall enclosing at least one cavity of the hollow body, the wall being a metallic material, is provided. The method includes the steps of filling a settable filling compound into at least one partial area of the at least one cavity; setting the filling compound; removing a predefined partial surface of the wall in an area of the at least one damaged portion; sealing the wall in an area of the removed partial surface by producing a covering element by welding, soldering, or casting-on; and removing the filling compound.Type: ApplicationFiled: February 3, 2009Publication date: August 6, 2009Applicant: MTU Aero Engines GmbHInventor: Bernd Kriegl
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Patent number: 7568271Abstract: A knife holder is provided which can be readily disassembled and maintained while remaining in a knife bank. Fasteners keep the cylinder housing and blade housing securely connected and are aligned parallel to the longitudinal axis of the knife holder for easy access while in the knife bank. The fasteners can be removed using a manual driver without the necessity of removing the knife holder bank from the web equipment.Type: GrantFiled: March 15, 2005Date of Patent: August 4, 2009Assignee: Burris Machine Company, Inc.Inventors: Jerry B. Sellers, James A. Willis, Patsy H. Smith
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Patent number: 7565727Abstract: The invention is related to an improved method of removing tubes from tubes sheets. The improved method softens and elongates a tube circumferentially surround by tube sheet, wherein the softening and elongating steps allow for quick and easy removal of the tube from the tube sheet without damaging the tube sheet or tube seats.Type: GrantFiled: June 13, 2007Date of Patent: July 28, 2009Assignee: Babcock & Wilcox Canada Ltd.Inventors: Wade Paul Blaser, Owen Burkle
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Publication number: 20090151142Abstract: Methods for repairing composite containment casings involving providing a composite containment casing having an integrated abradable system, the abradable system having at least one damaged portion, and including a sandwich structure, and at least one abradable layer, removing the damaged portion of the abradable system to leave a hole, shaping a sandwich structure segment to produce a shaped sandwich structure, placing the shaped sandwich structure into the hole in the abradable system, infusing a resin into the shaped sandwich structure, and curing the containment casing having the shaped sandwich structure, and applying at least one abradable layer to the shaped sandwich structure to produce the containment casing having a repaired integrated abradable system.Type: ApplicationFiled: December 12, 2007Publication date: June 18, 2009Inventors: MING XIE, Donald George Lachapelle
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Publication number: 20090129555Abstract: A method and a device for reworking or re-machining the surface and, in particular, the slide tracks of a slip ring while the slip ring is in a built-in state in an appliance or machine using the slip ring. The slip ring is rotated by means of a drive provided in the appliance for rotating the slip ring during normal operation, or by means of an auxiliary drive, while a surface-removing cutting tool or surface deforming tool held in a tool holder or carrier adapted to be attached to the appliance or machine is applied to the surface of the moving slip ring to re-machine or recondition the surface. The invention avoids the necessity of dismantling the appliance or machine for the purpose of removing the slip ring for repairs.Type: ApplicationFiled: November 5, 2008Publication date: May 21, 2009Applicant: SCHLEIFRING UND APPARATEBAU GMBHInventors: Hebert Staffler, Ronald Suchanecki, Fabian Schuenke, Harry Schilling