Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 8122935 | Casting core for forming a cooling channel in a piston produced by casting The invention relates to a soluble and essentially annular casting core (2) for forming a cooling channel that transitions into two areas (14, 15) which are approximately parallel to the piston axis (16) and are facing away from the piston head ... | 02/28/2012 |
| 8122936 | Anti-veining agent for metal casting Additives to foundry sand cores are provided for reducing or eliminating surface defects in metal castings. The additives general comprise an iron oxide component and a glass component which is preferably free of lithium oxide. ... | 02/28/2012 |
| 8100165 | Investment casting cores and methods An investment casting core combination includes a metallic casting core and a ceramic feedcore. A first region of the metallic casting core is embedded in the ceramic feedcore. A mating edge portion of the metallic casting core includes a number of projections. The ... | 01/24/2012 |
| 8079403 | Casting core for forming a cooling channel A soluble casting core for forming a cooling channel in a piston has a formed-on part for forming an oil supply opening and a formed-on part for forming an oil drain opening. In order to improve the mechanical strength of the piston, the oil supply opening and the o... | 12/20/2011 |
| 7967055 | 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... | 06/28/2011 |
| 7866370 | Blades, casting cores, and methods An article includes a blade casting core combination. The combination includes a ceramic feedcore and a metallic core. The ceramic feedcore has: a root end; a tip end; a leading end; a trailing end; a first side; a second side; and a plurality of legs extending betw... | 01/11/2011 |
| 7802613 | Metallic coated cores to facilitate thin wall casting A core for investment casting processes includes a core having one or more ceramic materials; and an exterior layer of metal material not susceptible to oxidation under investment casting operating conditions. A method for casting a turbine engine component having a... | 09/28/2010 |
| 7798201 | Ceramic cores for casting superalloys and refractory metal composites, and related processes A rare earth-based core for use in the casting of a reactive metal is described. The core contains a ceramic composition which includes at least about 10% by weight of monoclinic rare earth aluminate (RE4Al2O9), wherein RE represents... | 09/21/2010 |
| 7686068 | Blade outer air seal cores and manufacture methods A blade outer air seal (BOAS) casting core has first and second end portions and a plurality of legs. Of these legs, first legs each have: a proximal end joining the first end portion; a main body portion; and a free distal portion. Second legs each have: a proximal... | 03/30/2010 |
| 7581581 | Non-oxidizable coating A substrate is coated by applying a first layer atop the substrate and including, in major weight part, a non-refractory first metal. A second layer is applied atop the first layer and includes, in major weight part, a carbide and/or nitride of a second metal. A thi... | 09/01/2009 |
| 7575039 | Refractory metal core coatings A refractory metal core for use in a casting system has a coating for providing oxidation resistance during shell fire and protection against reaction/dissolution during casting. In a first embodiment, the coating includes at least one oxide and a silicon containing... | 08/18/2009 |
| 7556083 | Process for manufacturing the blade of a turbomachine, and assembly of the cores for implementation of the process A plugged assembly of cores includes a first core having a first end portion, and a second core having a second end portion. The first end portion of the first core is connected to the second end portion of the second core by a mortise and tenon type connection to f... | 07/07/2009 |
| 7467655 | Perimeter-cooled stage 1 bucket core stabilizing device and related method A core for use in casting a gas turbine bucket includes a solid, curved upper body portion and a pair of co-planar legs extending downwardly from the solid, curved upper body portions. The pair of legs are separated by an elongated open slot extending from a lower e... | 12/23/2008 |
| 7441585 | 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... | 10/28/2008 |
| 7438117 | Cylinder block casting bulkhead window formation A cylinder block casting is disclosed having a bulkhead window formed therein, the bulkhead window is formed by a set core received in one of a chill assembly and an integral barrel crankcase core of a mold package. ... | 10/21/2008 |
| 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 |
| 7413403 | Turbine blade tip cooling A turbine engine blade has an attachment root, a platform outboard of the attachment root, and an airfoil extending from the platform. The airfoil has pressure and suction sides extending between leading and trailing edges. An internal cooling passageway network inc... | 08/19/2008 |
| 7401640 | Die-casting mold core An exemplary die-casting mold core includes a mold body, an intermediate layer and a diamond-like carbon film. The mold body is made of a steel alloy containing carbon, chromium, manganese, silicon, vanadium, and iron. A molar percentage of hydrogen in the diamond-l... | 07/22/2008 |
| 7351369 | Molded twist-on wire connector A wire connector wherein the wire engaging core and electrically insulated housing are molded with an exterior surface of a molded wire engaging core used as a mold surface as the electrically insulated housing is molded around the wire engaging core to provide a wi... | 04/01/2008 |
| 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 |
| 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 |
| 7299552 | Methods for creating channels Methods of creating an internal channel of a fluid-ejection device are provided. One method includes encapsulating a channel core in an element of the fluid-ejection device that corresponds to the internal channel and dissolving at least a portion of the channel cor... | 11/27/2007 |
| 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 |
| 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 |
| 7293598 | Cylinder liner improvements An engine block mold, including at least one barrel slab core (10), the or each barrel slab core (10) including a slab portion (12), and at least one barrel portion (14) adapted to receive a cylinder liner (1), wherein the barrel p... | 11/13/2007 |
| 7287572 | Method for die casting an aluminum base frame used in a transmission device A cast aluminum base frame of a movable guide for a timing chain in an internal combustion engine is produced by a die in which the parting lines are located so that the shoe-engaging surface of the base frame and the pivot shaft-receiving hole are each formed by a ... | 10/30/2007 |
| 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 |
| 7278826 | Airfoil cooling passage trailing edge flow restriction An internal metering structure permits the exit apertures of a cooled airfoil to be sized to provide for easy manufacturability. ... | 10/09/2007 |
| 7278463 | Investment casting cores and methods An investment casting pattern is formed by forming a metallic first core element including at least one recess. The first core element is engaged to at least a mating one of an element of the die and a second core element. The recess serves to retain the first core ... | 10/09/2007 |
| 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 |
| 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 |
| 7270173 | 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... | 09/18/2007 |
| 7258156 | Investment casting pattern manufacture At least one feed core 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 t... | 08/21/2007 |
| 7243700 | Method for casting core removal To destructively remove a refractory metal casting core from a cast part the part is exposed to a combination of nitric acid and sulfuric acid. ... | 07/17/2007 |
| 7240718 | Method for casting core removal A thermal-oxidative process is used to remove a casting core from a cast part. ... | 07/10/2007 |
| 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 |
| 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 |
| 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 |
