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| Number | Title | Issue Date |
| 8171978 | Castings, casting cores, and methods The pattern has a pattern material and a casting core combination. The pattern material has an airfoil. The casting core combination is at least partially embedded in the pattern material. The casting core combination comprises a metallic casting core and at least o... | 05/08/2012 |
| 8096343 | Method for precision casting of metallic components with thin passage ducts In precision casting of metallic components with very thin passage ducts, in particular turbine blades, by the lost-wax process, the ceramic core pins provided for forming the passage ducts are covered and stabilized via a low-melting reinforcing coat prior to injec... | 01/17/2012 |
| 8082972 | System for assembly wax trees using flexible branch A process for creating a lost wax tree, including the steps of assembling a wax tree having a wax pattern and a wax runner, using automated equipment to flex either the wax tree or the wax pattern to bring disconnected sections into proximity, heating at least one o... | 12/27/2011 |
| 7946334 | Sprue formers A sprue former of the type used to produce a casting mold includes a generally hollow body or a body having hollow sections. The body includes an inlet forming member and at least one first interface member. The inlet forming member is configured to provide an inlet... | 05/24/2011 |
| 7942189 | Reusable wax tree sprue rod assembly for tree making in lost wax investment casting and method use The present invention is a novel sprue rod assembly for lost wax investment casting and its method of use. The sprue rod is reusable because it is made of material with a high melting point, such as metal, instead of wax. The sprue rod assembly also comprises a weig... | 05/17/2011 |
| 7900685 | Investment casting In an investment casting procedure using microwave energy as the heat source virgin wax models are attached to a spree of wax-type pattern material incorporating a susceptor, the spree having a pour cup also of a wax-type pattern material, the pour cup material havi... | 03/08/2011 |
| 7735542 | Support structure for a printed model in multi-component dental appliances Dental appliances including multiple components and a system and method for constructing the same are disclosed herein. The dental components are designed to fit together to form the dental appliance. The components of the dental appliance are electronically modeled... | 06/15/2010 |
| 7686065 | Investment casting core assembly In a method for manufacturing a combination investment casting core, a plurality of cores are each formed by cutting a metallic sheet to define a first portion and a number of separate second portions linked by the first portion. The second portions are bent out of ... | 03/30/2010 |
| 7669637 | Impeller for supercharger and method of manufacturing the same A lost-wax cast impeller for a supercharger having no parting line on a hub surface and a blade surface in each space demarcated by pairs of long blades adjacent to each other and having excellent aerodynamic performance. A method of manufacturing the impeller invol... | 03/02/2010 |
| 7594529 | Investment casting process A method for the production of a shell mould. The method comprises the sequential steps of: (i) dipping a preformed expendable pattern into a slurry of refractory particles and colloidal liquid binder whereby to form a coating laye... | 09/29/2009 |
| 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 |
| 7360578 | Method of joining wax patterns for fabricating golf club head In one aspect, the present invention relates to a method of joining wax patterns for fabricating a golf club head. In one embodiment, the method has the step of providing a prefabricated first wax pattern and a prefabricated second wax pattern, embedding a joining p... | 04/22/2008 |
| 7335022 | Dental bite impression wafer for identification purposes that also captures DNA-bearing materials A dental bite impression wafer that also captures the user's saliva and cheek cells. The wafer is made from a thermoplastic material that softens when warmed and that defines opposed posterior edges. The wafer carries one or more structures such as posts that are ad... | 02/26/2008 |
| 7325585 | Dental prosthetic forming system A system for forming a dental prosthetic using the lost wax method utilizes a unitary pattern assembly to create a unitary cavity in a mold incorporating a dental prosthetic pattern cavity portion, a reservoir cavity portion and at least one sprue. The volume of the... | 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 |
| 7314586 | Method for manufacturing a wax mold for a golf club head A method for manufacturing a wax mold of a golf club head includes steps of positioning a male die assembly in a first cavity of a first female die, injecting dissolvable wax into the first cavity to form a dissolvable wax mold, removing the first female die to take... | 01/01/2008 |
| 7302992 | Fugitive pattern for casting A fugitive pattern for making a shell mold for investment casting a metal or alloy comprises a substantially random interpolymer and a low molecular weight polymer in proportions to provide a fugitive pattern having a combination of properties suitable for use in ma... | 12/04/2007 |
| 7302991 | Fugitive pattern for casting A fugitive pattern for making a shell mold for investment casting a metal or alloy comprises a substantially random interpolymer and a low molecular weight polymer in proportions to provide a fugitive pattern having a combination of properties suitable for use in ma... | 12/04/2007 |
| 7290584 | System and method for welding wax patterns A wax pattern welding system and method for producing a pool of molten wax on an area of a surface of a wax component is provided. The wax pattern welding system includes a bar of heat conducting material and a heating element. The bar has a raised heating surface, ... | 11/06/2007 |
| 7287571 | Lost foam casting pattern Pattern for the lost foam casting process including a pouring-basin-forming portion, a sprue-forming portion, a runner-forming portion, a gate-forming portion, and an inline-riser-forming portion. The runners formed by the pattern each have an inline riser through w... | 10/30/2007 |
| 7281566 | Method for manufacturing mold A method for manufacturing a mold (70), which comprises a step of forming a layer (31) of combustible powdery particles (32) around a wax mold (21), which is a lost pattern, a step of forming a film (51) of a ceramic precursor slur... | 10/16/2007 |
| 7278465 | Investment casting slurry composition and method of use An investment casting method involves producing a casting shell by applying a hardenable moist mixture to a sacrificial pattern. To hasten the hardening of the moist mixture to create the shell, a stucco coat is subsequently applied to the mixture. In some cases, th... | 10/09/2007 |
| 7278461 | Manufacturing method of titanium compressor wheel The present invention provides a manufacturing method of high precision titanium compressor wheel in which by removing pads attached on an entire surface entirely as a machining allowance in manufacturing process, dimensional accuracy at the time of manufacturing is... | 10/09/2007 |
| 7270170 | Investment casting core methods A sacrificial core is used for forming an interior space of a part and includes a ceramic core element and a first core element including a refractory metal element. The ceramic core element may be molded over the first core element or molded with assembly features ... | 09/18/2007 |
| 7270166 | Fugitive pattern assembly and method A fugitive pattern assembly is made by preforming one or more fugitive patterns of an article to be cast, placing the preformed patterns in an injection die, and injecting fluid gating material into the die to form gating connected to the patterns. The fugitive patt... | 09/18/2007 |
| 7264036 | Fugitive pattern for casting A fugitive pattern for making a shell mold for investment casting a metal or alloy comprises a substantially random interpolymer and a low molecular weight polymer in proportions to provide a fugitive pattern having a combination of properties suitable for use in ma... | 09/04/2007 |
| 7252507 | Thermoplastic wafer for a dental impression for identification purposes A method and article for providing identification means, comprising taking an impression of teeth with a thermoplastic wafer of special configuration such that the wafer receives an impression which gives the size, shape and anatomy of each tooth from the occlusal s... | 08/07/2007 |
| 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 |
| 7246652 | Ceramic core recovery method A method to recover wax from wax patterns used in investment casting using a lost wax technique without damaging incorporated ceramic cores is disclosed that includes subjecting the wax pattern to specific conditions. These conditions include chilling a casting tool... | 07/24/2007 |
| 7246649 | Diecast machine A diecast machine comprises: a sleeve extending in the vertical direction; a plunger moving upward in the vertical direction inside the sleeve; a mold disposed above an upper side of the sleeve; a case member constituted of a nonconductive member, which covers at le... | 07/24/2007 |
| 7237375 | Investment cast, stainless steel chain link and casting process therefor An investment cast, stainless steel chain link is provided for chains used in water and wastewater treatment. The chain link comprises a pair of spaced apart, elongated sidebars having forward ends and rearward ends. The forward ends are spread apart and are provide... | 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 |
| 7216691 | Mold-removal casting method and apparatus A process for the casting of metals includes the steps of providing a mold, delivering a molten metal into the mold, solidifying the molten metal, and removing at least a portion of the mold. The step of removing at least a portion of the mold begins before the step... | 05/15/2007 |
| 7207375 | Investment casting A wax or similar material may be molded to a base plate of an investment casting shelling fixture. The molding may provide for enhanced positioning of wax patterns or may provide a precise surface shape for the shell. ... | 04/24/2007 |
| 7207108 | Process for producing a turbine blade or vane In a process for producing a turbine blade or vane, providing a casting mold for casting the turbine blade or vane, the casting mold including a blade or vane platform and a main blade or vane part, and a position of the main blade or vane part relative to the blade... | 04/24/2007 |
| 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 |
| 7198091 | Method for securing gemstones in an effectively invisible setting The invention relates to a method for producing an effectively invisible gemstone setting by casting a wax model of the setting and inserting a flange or post between the stones and into the floor of the setting, or into a depression or aperture on the floor of the ... | 04/03/2007 |
| 7173079 | Casting material for producing casting molds for casting high-melting point materials The casting-mold material designed to manufacture casting molds used in casting high melting-point substances. The casting mold formed from a powder component containing magnesium oxide and aluminum oxide and a liquid component. The powder component additionally con... | 02/06/2007 |
| 7172011 | Method for the production of a lost-foam casting model for a light metal cylinder liner A light metal cylinder liner with a surface which facilitates the connection with the surrounding cast material may be produced. The cylinder liner is produced by a lost-foam method with a form for production of the cast foam model having a structured surface with h... | 02/06/2007 |
| 7152656 | Manufacturing method for a wax pattern for making a golf club head A manufacturing method for a hybrid one-piece design of a wax pattern of a golf club head includes the steps of: prefabricating a first wax pattern in a first molding assembly, the first wax pattern having a connecting portion; inserting the first wax pattern into a... | 12/26/2006 |
