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| Number | Title | Issue Date |
| 8151861 | One-piece core manufacturing method for swing bolster and sideframe of lorry A one-piece core-making technique used in producing railway truck bolsters and side frames, which includes the following steps: 1. After scraping the top of a core box, applying a shaped top mould (11), which is precisely located, from top to bottom. 2. Press... | 04/10/2012 |
| 8091608 | Method of forming a hollow sand core A method of forming a hollow sand core involves placing a preform into a cavity defined in a mold, where the preform has a predetermined configuration. A granular material is then introduced into the mold cavity and around the preform. The introduced granular materi... | 01/10/2012 |
| 8074701 | Method for producing a pattern for the precision-cast preparation of a component comprising at least one cavity A method for producing a pattern for the precision-cast representation of a component having a cavity is provided. In the method wherein the component is a turbine component having a cavity, the finished pattern comprises a core and an outer contour pattern, the out... | 12/13/2011 |
| 7942188 | Refractory metal core A cast metal article, such as a turbine engine component, is made by shaping a body of refractory metal particles to form a molded refractory metal article. The molded refractory metal article is sintered to form a refractory metal core. Both the refractory metal ar... | 05/17/2011 |
| 7757745 | Contoured metallic casting core A method for manufacturing an investment casting core uses a metallic blank having a thickness between parallel first and second faces less than a width and length transverse thereto. The blank is locally thinned from at least one of the first and second faces. The ... | 07/20/2010 |
| 7673669 | Investment casting cores and methods To manufacture a casting core, one or more recesses are formed in at least one face of metallic sheetstock. After the forming, a piece is cut from the metallic sheetstock. The piece is deformed to a non-flat configuration. ... | 03/09/2010 |
| 7610945 | Rare earth-based core constructions for casting refractory metal composites, and related processes A method of fabricating a core for a ceramic shell mold is disclosed. A porous core body is formed from at least about 50% by weight of at least one rare earth metal oxide. The core body is heated under heating conditions sufficient to provide the core with a densit... | 11/03/2009 |
| 7562691 | Core for turbomachine blades The present invention relates to a ceramic core used in the manufacture, by lost wax casting, of a turbomachine blade with cooling cavities and a squealer, comprising at least one main core, wherein the main core (10) comprises an element (10B) shaped ... | 07/21/2009 |
| 7533714 | Process for manufacturing ceramic cores for turbomachine blades A process for manufacturing a ceramic foundry core having at least one thin region with a thickness “e”, in particular in of a turbomachine blade trailing edge, including the forming in a mold of a mixture including a ceramic particle filler and an organic binde... | 05/19/2009 |
| 7487819 | Disposable thin wall core die, methods of manufacture thereof and articles manufactured therefrom Disclosed herein is a method comprising injecting into a thin wall disposable core die a slurry having a viscosity of about 1 to about 1,000 Pascal-seconds at room temperature when tested at a shear rate of up to 70 seconds−1 and a flow index of less th... | 02/10/2009 |
| 7458411 | Method for manufacturing cast ceramic cores for turbomachine blades A method of manufacturing a cast core with at least one recess, corresponding to a partition of a turbomachine blade, includes the steps of shaping, in a mold, a mixture containing a ceramic particles filler and an organic binder; forming a core rough casting withou... | 12/02/2008 |
| 7334625 | Manufacture of casting cores A method for forming an investment casting core comprises cutting a patterned core precursor from refractory metal-based sheet. The cutting forms recast along the cuts. An oxide is grown on non-recast areas. The recast is substantially chemically removed but substan... | 02/26/2008 |
| 7302990 | Method of forming concavities in the surface of a metal component, and related processes and articles A method of forming at least one concavity of a selected size and shape within a surface of an internal passageway of a metallic component comprises: depositing a ceramic-based material by a direct-write technique onto a ceramic core which is suitable for forming th... | 12/04/2007 |
| 7293597 | Non-oxidizable coating A substrate is coated by applying an essentially pure aluminum first layer to a surface of the substrate. At least a first portion of the first layer is oxidized so as to provide a protective coating of desired properties. The substrate may be a refractory metal-bas... | 11/13/2007 |
| 7284589 | Reinforced casting cores for metal casting, manufacture and use Sacrificial lost casting cores of green or fired ceramic, which include at least one tension spring as a metallic reinforcing element, wherein at least one end of this reinforcing element lies near one of the surfaces of the casting core or extends therethrough, and... | 10/23/2007 |
| 7278460 | Ceramic casting core and method A ceramic core for use in casting an article such as for example an airfoil, wherein the ceramic core has a pocket located at or near a region of the core that is otherwise associated with occurrence of a localized casting defect in the cast article. A covering is d... | 10/09/2007 |
| 7275585 | Process for the manufacture by lost wax moulding of parts that include at least one cavity A process for the manufacture of a part includes the steps of forming a core in a ceramic material, inserting the core into in a wax mold, placing an element on the core thereby forming a spacer between the core and an internal wall of the wax mold, forming a wax mo... | 10/02/2007 |
| 7258158 | Increasing stability of silica-bearing material Method and apparatus for prolonging the stability (working life) of a ceramic slurry and other aqueous mixture or dispersion containing a liquid silica-bearing or other component as well as the raw liquid silica-bearing component in ambient air over time by providin... | 08/21/2007 |
| 7246653 | Process for manufacturing the blade of turbomachine, and assembly of the cores for implementation of the process A process for manufacturing a blade of a turbomachine using the lost-wax moulding technique, where the blade includes a first central longitudinal cavity and at least one second longitudinal cavity together forming a cooling circuit and communicating with each other... | 07/24/2007 |
| 7244317 | Dispensible brazing paste A dispensable brazing paste useful in lamp manufacturing includes a brazing powder and a water soluble vehicle that has water, glycerin, a binder, and a dispersant that includes ammonium stearate and ammonium citrate. Preferably, the brazing powder is 84-87 wt % of ... | 07/17/2007 |
| 7234506 | Ceramic casting core and method A ceramic core for use in casting an article such as for example an airfoil, wherein the ceramic core has a pocket located at or near a region of the core that is otherwise associated with occurrence of a localized casting defect in the cast article. A covering is d... | 06/26/2007 |
| 7207373 | Non-oxidizable coating A substrate is coated by applying an essentially pure aluminum first layer to a surface of the substrate. At least a first portion of the first layer is oxidized so as to provide a protective coating of desired properties. The substrate may be a refractory metal-bas... | 04/24/2007 |
| 7108045 | Composite core for use in precision investment casting A composite core for an investment casting process, the core including both a ceramic portion and a refractory metal portion, with the refractory metal portion being so disposed as to perform the function of a plurality of such refractory metal elements. In particul... | 09/19/2006 |
| 7104307 | Casting mold for engine block A casting mold for an engine block and method for manufacturing the casting mold. In one embodiment, the casting mold includes a mold seat with a double-curved surface, and a cast-in cylinder liner. The cylinder liner has an axis and an end surface. The end surface ... | 09/12/2006 |
| 7093645 | Ceramic casting core and method A ceramic core for use in casting an article such as for example an airfoil, wherein the ceramic core has a pocket located at or near a region of the core that is otherwise associated with occurrence of a localized casting defect in the cast article. A covering is d... | 08/22/2006 |
| 7093341 | Method of making an axial piston pump barrel with a cast high pressure collection cavity In an axial piston pump, a plurality of reciprocating pistons are at least partially positioned within a barrel. The barrel includes a ring shaped high pressure collection cavity that is positioned between the piston chambers and the outlet of the pump. In order to ... | 08/22/2006 |
| 7082984 | Article casting method The present invention is a method for casting a part having a complex shape or having a complex shape thereon. The method includes providing a pattern and securing at least one core to the pattern. A conformable material is located about the pattern and the core to ... | 08/01/2006 |
| 7073476 | Cylinder block In a cylinder block, at least one member disposed around a bore is made of a metal matrix composite including a ceramic compact having a three-dimensional mesh structure comprised of a plurality of spherical cells and a plurality of communicating pores for allowing ... | 07/11/2006 |
| 7055574 | Method of producing metal article having internal passage coated with a ceramic coating The present application relates to a method of producing a metal article having an internal passage coated with a ceramic coating. The method comprises: preparing a core for defining the internal passage; applying the ceramic coating on the core; assembling the core... | 06/06/2006 |
| 6920910 | Casting device, process for producing a casting device and method of using the casting device A casting device includes a wall which is formed in the manner of a sandwich structure from a front layer, a yielding intermediate layer and a supporting outer layer. In this way, the contraction-related internal stresses which occur during cooling are kept at a low... | 07/26/2005 |
| 6845807 | Metal casting core assembly for casting a crankshaft A core box assembly for casting a crankshaft. The core box assembly comprises axially aligned cores that define different axial portions of a cavity that receives molten metal to cast the crankshaft. Oil gallery cores are placed in the core box assembly to form as-c... | 01/25/2005 |
| 6598655 | Casting of engine blocks An engine block mold package includes a barrel crankcase core having a plurality of barrels on an integral crankcase region and one or more locator surfaces on the crankcase region. The barrels are formed by a barrel-forming tool element of a core box. Th... | 07/29/2003 |
| 6588484 | Ceramic casting cores with controlled surface texture A method of making a ceramic core is provided wherein the ceramic core is grit blasted using abrasive grit media particulates directed at the core through a preformed apertured mask or pattern to impart a controlled pattern of surface concavities to the c... | 07/08/2003 |
| 6478073 | Composite core for casting metallic objects A composite core structure is used for metal casting in order to form cavities of preselected sizes and shapes within the casting. The composite core has an insoluble support member that can be metallic and a soluble portion disposed around at least a par... | 11/12/2002 |
| 6374898 | Process for producing a casting core, for forming within a cavity intended for cooling purposes A process for producing a casting core which is used for forming within a casting a cavity intended for cooling purposes, through which a cooling medium can be conducted, the casting core having surface regions in which there is incorporated in a specific... | 04/23/2002 |
| 6371194 | Method for producing core preforms and recycling core sand for a foundry The invention relates to a method for the production of core preforms for foundry in which a) a mixture of inorganic, refractory foundry sand and a water glass-based inorganic binder is produced, b) the mixture is poured into a heated core box c) the wate... | 04/16/2002 |
| 6305458 | Lost foam and sand cores stage manufacturing technology A method of casting a workpiece having internal cavities uses a combination of sand core and lost foam techniques. A core of bonded granular material in the desired configuration of the voids of the workpiece is formed. The core has oppositely facing firs... | 10/23/2001 |
| 6298899 | Water jacket core A water jacket 10 which includes an outer core 12 and a plurality of pre-formed bridge cores 14. The water jacket 10 allows for the selective creation of cylinder bores 16 which have a substantially uniform and circular cross sectional area.... | 10/09/2001 |
| 6286582 | Process for the manufacture of thin ceramic cores for use in precision casting A process for the manufacture of a thin ceramic core involves casting a band of uniform thickness on a support from a solution of a ceramic material based on silica and zircon in a binder, drying the band, shaping the band in a mold and carrying out prehe... | 09/11/2001 |
| 6186217 | Multipiece core assembly A plurality of individual thin wall, arcuate (e.g. airfoil shaped) core elements are formed in respective master dies to have integral interlocking locating features, the individual core elements are prefired in respective ceramic setter supports to have ... | 02/13/2001 |
