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| Number | Title | Issue Date |
| 7513296 | Clustered investment-casting shells for casting thin-walled golf club-heads of titanium alloy Investment-casting shells are disclosed that have at least one cluster of individual club-head casting molds for casting thin-walled, titanium alloy club-heads at high process yield and low material usage. The shells have respective combinations of cluster configura... | 04/07/2009 |
| 7475717 | Mold A mold having a shell and a porous layer formed on the surface of the cavity of the shell. The mold can be suitably used for manufacturing a porous body having a porous layer on the surface thereof. The method for manufacturing the mold, includes the steps of formin... | 01/13/2009 |
| 7438118 | Investment casting pattern manufacture At least one feedcore and at least one wall cooling core are assembled with a number of elements of a die for forming a cooled turbine engine element investment casting pattern. A sacrificial material is molded in the die. The sacrificial material is removed from th... | 10/21/2008 |
| 7413001 | Synthetic model casting A synthetic model of a component is created from a 3-D numerical model thereof. A core is then cast inside the synthetic model. The synthetic model may then be removed from the cast core, and then the cast core is used for casting an authentic component therearound.... | 08/19/2008 |
| 7370688 | Lost wax moulding method with contact layer A method of manufacture of a multilayer ceramic shell mould whereof at least one contact layer out of a wax master pattern or a part to be manufactured, or other similar material, includes a step of preparing a first slip containing ceramic particles and a binder; a... | 05/13/2008 |
| 7332123 | Method for manufacturing composite articles and the articles obtained therefrom A method of molding an article comprises inserting a mandrel into the cavity of the mold; placing a niobium based refractory metal intermetallic composite powder into a cavity of a mold; consolidating the niobium based refractory metal intermetallic composite around... | 02/19/2008 |
| 7325587 | Method for casting cooling holes A method for casting a cooled component includes molding a sacrificial pattern. A plurality of holes are formed through the pattern. A shell is formed over the pattern including filling the holes. The pattern is destructively removed from the shell. A metallic mater... | 02/05/2008 |
| 7318466 | Lost wax casting method A method of manufacture of a multilayer ceramic shell mould out of a master pattern includes the steps of dipping the master pattern in a first slip containing ceramic particles and a binder, depositing sand particles to form a contact layer, dipping the master patt... | 01/15/2008 |
| 7306026 | Cooled turbine airfoils and methods of manufacture An investment casting pattern is formed by installing a first core to a first element of a molding die to leave a first portion of the first core protruding from the first element. After the installing, the first element is assembled with a feed core and a second el... | 12/11/2007 |
| 7306024 | Refractory metal core wall thickness control In accordance with the present invention, a casting system is provided which broadly comprises a core and a wax die spaced from said core, a refractory metal core having a first end seated within a slot in the core and a second end contacting the wax die for positio... | 12/11/2007 |
| 7296615 | Method and apparatus for determining the location of core-generated features in an investment casting A secondary datum scheme is used for identifying the location of the core-produced internal geometry of hollow investment cast metal parts that are made using a free-floating core design for implementing complex internal structural features. A set of datum pads are ... | 11/20/2007 |
| 7237337 | Heat dissipating apparatus having micro-structure layer and method of fabricating the same The present invention relates to a heat dissipating apparatus having micro-structure layer and method for fabricating the same. The method provides two highly heat conductive members having structure patterns. A highly heat conductive material is coated on the struc... | 07/03/2007 |
| 7237595 | Casting mold According to the prior art, through-holes in components are often introduced after the production (casting) of the component. This entails additional outlay in terms of time and equipment. The time required can be considerably shortened if a casting mold is designed... | 07/03/2007 |
| 7231955 | Investment casting mold design and method for investment casting using the same A method for investment casting includes the steps of positioning a base plate relative to a die; molding a first material between the die and at least a first surface portion of the base plate; securing one or more patterns to the base plate, the one or more patter... | 06/19/2007 |
| 7216694 | Apparatus and method for reducing operating stress in a turbine blade and the like A core for casting a metal part having a body with solid portions spaced apart by hollow portions. The body includes at least one support element extending between adjacent solid portions. The support element provides stiffness and strength for the casting core duri... | 05/15/2007 |
| 7204296 | Method of removing a fugitive pattern from a mold A method is provided for removing a fugitive pattern, such as wax or other meltable pattern material, residing inside of a refractory mold by discharging condensable vapor such as steam inside the mold to contact and melt the pattern while an exterior of the mold is... | 04/17/2007 |
| 7174945 | Refractory metal core wall thickness control In accordance with the present invention, a casting system is provided which broadly comprises a core and a wax die spaced from said core, a refractory metal core having a first end seated within a slot in the core and a second end contacting the wax die for positio... | 02/13/2007 |
| 7152659 | Component casting A deflector element is provided, in order to improve temperature interface control with respect to directional solidification of a component casting. This deflector element is formed during the mould making process and is arranged to be positioned with respect to a ... | 12/26/2006 |
| 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 |
| 7056095 | Impeller and method using solid free form fabrication The present invention relates to the use of solid freeform fabrication (SFF) technology in the manufacture of impeller blades. The impeller blades may be metal plated and further incorporated onto a rigid skeletal frame to allow for more desirable wear resistance an... | 06/06/2006 |
| 7048034 | Investment casting mold and method of manufacture The invention relates to a investment casting shell molds and their method of manufacture. The method entails mixing fiber and refractory filler to form a dry blend; mixing the dry blend with a binder sol to form a refractory slurry, and employing the refractory slu... | 05/23/2006 |
| 7036556 | Investment casting pins A pin used in investment casting, or the lost wax process, to support the ceramic core of a mold includes a core formed of a metal which provides suitable strength to maintain the position of the ceramic core during pouring of molten metal into the mold but which is... | 05/02/2006 |
| 7032647 | Pressure casting using a supported shell mold A method of casting including forming a shell mold around a pattern fabricated from an expendable material and then removing the expendable material from the shell mold. The shell mold is located within a housing such that an inlet port of the shell mold communicate... | 04/25/2006 |
| 7032643 | Investment moulding process and apparatus An investment mould process for forming a cast member is described. The process comprises forming a precursor casting (12) from a master mould (10). The master mould (10) has an internal surface (16) defining a space (14) in which ... | 04/25/2006 |
| 7032642 | Investment moulding process and apparatus An investment mould process for forming a cast member is described. The process comprises forming a precursor casting (12) from a master mould (10). The master mould (10) has an internal surface (16) defining a space (14) in which ... | 04/25/2006 |
| 7032648 | Investment moulding process and apparatus An investment mould process for forming a cast member is described. The process comprises forming a precursor casting (12) from a master mould (10). The master mould (10) has an internal surface (16) defining a space (14) in which ... | 04/25/2006 |
| 7011141 | Apparatus and method for producing single crystal metallic objects A mold is provided for enabling casting of single crystal metallic articles including a part-defining cavity, a sorter passage positioned vertically beneath and in fluid communication with the part-defining cavity, and a seed cavity positioned vertically beneath and... | 03/14/2006 |
| 7004230 | Investment casting shells and compositions including rice hull ash Incorporation of rice hull ash into investment casting shell molds improves the permeability, shell build thickness, and/or shell build uniformity of the molds. A method to make the molds entails mixing refractory filler, rice hull ash, and preferably a fiber to for... | 02/28/2006 |
| 6991022 | Investment casting mold and method of manufacture The invention relates to investment casting shell molds and their method of manufacture. The method entails mixing fiber such as ceramic refractory fiber and organic fiber with ceramic filler to form a dry blend. The dry blend is mixed with a binder sol such as coll... | 01/31/2006 |
| 6920913 | Method for processing casting materials to increase slurry lifetime Embodiments of a method for increasing the lifetime of a casting slurry are described. One feature of the disclosed embodiments comprises processing refractory materials that are used to form casting slurries to provide a substantial increase in slurry lifetime for ... | 07/26/2005 |
| 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 |
| 6896036 | Method of making turbine blades having cooling channels To prevent movement of a ceramic core in a ceramic shell for the investment casting of a turbine blade, the free end of the core has one or more pins embedded therein so that the pins project into both the core and the ceramic shell which is applied over a wax layer... | 05/24/2005 |
| 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 |
| 6845811 | Reinforced shell mold and method A method of making a ceramic shell mold comprises repeatedly coating a fugitive pattern of an article to be cast with a ceramic slurry layer and applying on the ceramic slurry layer a refractory stucco to form a plurality of ceramic slurry layers and stucco layers o... | 01/25/2005 |
| 6814131 | Investment casting mold and method of manufacture The invention relates to a investment casting molds and their method of manufacture. The method entails mixing refractory fiber, glass fiber, and refractory filler to form a dry blend; mixing the dry blend with an aqueous colloidal silica sol to form a refractory pr... | 11/09/2004 |
| 6776214 | Centrifugal casting of titanium alloys with improved surface quality, structural integrity and mechanical properties in isotropic graphite molds under vacuum Methods for making various titanium base alloys and titanium aluminides into engineering components such as rings, tubes and pipes by melting of the alloys in a vacuum or under a low partial pressure of inert gas and subsequent centrifugal casting of the melt in the... | 08/17/2004 |
| 6766850 | Pressure casting using a supported shell mold A method of casting including forming a shell mold around a pattern fabricated from an expendable material and then removing the expendable material from the shell mold. The shell mold is located within a housing such that an inlet port of the shell mold communicate... | 07/27/2004 |
| 6749006 | Method of making investment casting molds A method of forming a ceramic investment shell mold about a fugitive wax pattern of an article comprises coating the pattern with ceramic slurry, applying a ceramic particulate material heated above ambient temperature to the slurry layer, drying the ceramic slurry ... | 06/15/2004 |
| 6739381 | Method of producing a turbine blade In a method of producing a turbine blade in hollow section, an especially low defect or scrap rate is to be ensured. To this end, a first core element is connected via a number of approximately cylindrical spacers to a further core element and/or to a casting mold, ... | 05/25/2004 |
| 6648060 | Reinforced shell mold and method A method of making a ceramic shell mold comprises repeatedly coating a fugitive pattern of an article to be cast with a ceramic slurry layer and applying on the ceramic slurry layer a refractory stucco to form a plurality of ceramic slurry layers and stuc... | 11/18/2003 |
