Abstract: Lightweight and strong components having any desired shape, form, or geometry may be manufactured using thermally expanding mandrels by the processes described herein. A thermally expanding mandrel may be formed from an expanding material composition including thermally expanding particles, e.g., micronized rubber particles, and water-soluble binder material, e.g., gypsum plaster. Component material may be applied to the mandrel, and the mandrel may be inserted into a molding tool. Upon application of heat to the mandrel, the mandrel may expand, and compress and cure the component material into a component within the molding tool. Following formation of the component, the mandrel may be washed out of the component, e.g., using pressurized water, and the expanding material composition may be recycled and/or reused.

Abstract: A lifting anchor assembly that is configured to be embedded in a tilt-up concrete structure includes an anchor member that has a central portion configured to engage a lift apparatus and a pair of legs that extend downward from the central portion. A lower portion of each of the pair of legs includes a curved section configured to engage within a concrete structure during its forming process. A spacer may be selected to attach at an end portion of each the pair of legs, where the spacers each extend downward from the anchor member and rest on a floor surface of a concrete form to support the anchor member at a desired spacing from the floor and upright within the concrete structure that is cast in the concrete form.

Abstract: A lifting anchor assembly that is configured to be embedded in a tilt-up concrete structure includes an anchor member that has a central portion configured to engage a lift apparatus and a pair of legs that extend downward from the central portion. A lower portion of each of the pair of legs includes a curved section configured to engage within a concrete structure during its forming process. A spacer may be selected to attach at an end portion of each the pair of legs, where the spacers each extend downward from the anchor member and rest on a floor surface of a concrete form to support the anchor member at a desired spacing from the floor and upright within the concrete structure that is cast in the concrete form.

Abstract: A disposable formwork for making ventilated loose stone foundations, in particular for floors, slabs, storage and/or collection tanks, dispersion tanks, alveolar concrete beds, cavities and/or similar building structures is described. The disposable formwork comprises a body having a first substantially convex surface intended to receive at least one binding material casting, optionally concrete, and a second surface, facing the opposite side of the first surface, substantially concave and suitable for delimiting, at least partly, a cavity; at least one support element, in particular four, having at least one contact portion arranged to engage a bottom surface of a cavity of a building structure under construction and arranged to support the body according to a position spaced from the bottom surface of the cavity. The disposable formwork has at least one portion made of polystyrene. Preferably, the entire structure of the disposable formwork is advantageously made of polystyrene.

Abstract: A coupling piece for an outer end of a multilayered conduit, includes a coupling pipe which is provided on the outer side with a radially upright wall, wherein the wall is widened in an axial direction at a radial distance from the outer side of the body. The outer side of the coupling pipe, the upright wall and the widened portion enclose an annular insertion space into which the outer end of the conduit can be directly inserted, wherein the inner wall of the coupling pipe is reinforced with an adjacent reinforcing layer which has a greater strength than the material of the coupling pipe. The reinforcing layer is provided with axial engaging elements, while the inner wall is provided with axial connecting elements which correspond with and connect to the engaging elements.

Abstract: Apparatus (1) for enabling a coating to be applied to an internal surface of a pipe elbow or bend C comprises a flexible body (2) adapted for location to extend within the pipe elbow or bend, and a bendable core (3) extending through the body. Bending of the core causes the flexible body to be bent in a similar manner. A method for applying the coating to the internal surface of the pipe elbow or bend (C) comprises the steps of shaping the flexible body (2) and locating it to extend within the pipe elbow or bend, and introducing a coating material so as to flow around and into a space defined between the flexible body and the internal surface of the elbow or bend.

Abstract: The baking pan disclosed herein creates a single, or double, bite sized baked product that has a crispy outer edge and a chewy interior. The ratio between the side of the interior insert of the pan and the exterior side of the pan is critical to form the desired product. The pan can range in size from about a 5 inch exterior diameter to a 16 inch exterior diameter with the interior insert increasing accordingly.

Abstract: A core assembly for a turbine engine blade includes a generally radially extending trunk interconnected to multiple generally axially extending tabs. The tabs are interconnected by a generally radially extending ligament. Multiple generally axially extending protrusions are interconnected to the ligament opposite the trunk. A mold is configured to define an exterior surface of an airfoil. The core is arranged within the mold and is configured such that the tabs and the ligament break through at the exterior surface.

Abstract: The wedging system for transmitting loads from a formwork to the comprises a supporting member (3), a threaded bar (2) for the transmission of vertical load, a nut (11), and a base (1) that in turn comprises a plate (9) with a perforation (10), wherein the bar (2) for transmitting vertical load is secured to the supporting member (3), the supporting member (3) being affixed to a side wall of the formwork and the loads generated in the formwork being transmitted to the land, thereby preventing relative movement between the base (1) and the supporting member (3), by means of the insertion of the bar (2) for transmitting vertical load into the perforation (10) in the plate (9) of the base (1) and screwing the nut (11) into the upper end of the bar (2) for transmitting vertical load.

Abstract: A device for blowing gas into a metallurgical vessel contains at least one gas flow channel fluidly connecting a gas inlet located at one end to a gas outlet located at the opposite end. The channel is in the shape of a slit. The gas channel contains a series of continuous concave bridges connecting the opposing surfaces defining the channel, with their concave side oriented towards the gas outlet. The concave bridges are disposed in a staggered arrangement, such that any shortest line running from the gas outlet to the gas inlet of the channel necessarily intercepts the concave side of at least one bridge. The device is resistant to clogging by infiltrated molten metal or slag.

Abstract: A refractory coating for producing mold coatings by application to inorganically or organically-bound molding materials in lost molds or to cores for iron and steel casting is disclosed. The refractory coating can have a proportion by weight of 0.001% or more and less than 1% of inorganic hollow bodies, which partially or fully consist of crystalline material and have a softening point of 1000° C. or higher.

Abstract: A refractory metal core for forming internal features in a turbine engine component has a core formed from a refractory metal material; and the core has at least one blended surface on at least one edge of the core.

Abstract: A ceramic casting core, including: a plurality of rows (162, 166, 168) of gaps (164), each gap (164) comprising an airfoil shape; interstitial core material (172) that defines and separates adjacent gaps (164) in each row (162, 166, 168); and connecting core material (178) that connects adjacent rows (170, 174, 176) of interstitial core material (172). Ends of interstitial core material (172) in one row (170, 174, 176) align with ends of interstitial core material (172) in an adjacent row (170, 174, 176) to form a plurality of continuous and serpentine shaped structures each comprising interstitial core material (172) from at least two adjacent rows (170, 174, 176) and connecting core material (178).

Abstract: An airfoil for a turbine engine includes a structure having a cooling passage that has a generally radially extending cooling passageway arranged interiorly relative to an exterior surface of the structure. The cooling passageway includes multiple cooling slots extending there from toward the exterior surface and interconnected by a radially extending trench. The trench breaks the exterior surface, and the exterior surface provides the lateral walls of the trench. The airfoil is manufactured by providing a core having multiple generally axially extending tabs and a generally radially extending ligament interconnecting the tabs. The structure is formed about the core to provide the airfoil with its exterior surface. The ligament breaks the exterior surface to form the radially extending trench in the exterior surface of the structure.

Abstract: In a method for manufacturing components from composite fiber materials, at least one placeholder is inserted into a recess in a molding tool, wherein the unfinished component is subsequently produced, the placeholder is removed, at least one lifting pad is inserted into the recess and the unfinished component is removed from the molding tool by inflating the lifting pad. In a system for manufacturing components from composite fiber materials, the component removal process is monitored and controlled by a computer unit in order to prevent predetermined maximum component loads from being exceeded. The gentle component removal process makes it possible to avoid consequential costs for repairing or reworking the components.

Abstract: A receptacle for handling molten metal is provided. The receptacle has bottom and side walls and includes a refractory defining a cavity within which the molten metal is conveyed or contained. The receptacle has at least one channel extending within at least one of its walls. The channel has an inlet and an outlet. The inlet is connectable to a source for circulating a fluid within the channel. The outlet allows the fluid to be expelled from said channel. The channel allows, when the fluid is circulated in it, to regulate the temperature of the refractory and thereby of the metal conveyed or contained. A casting assembly and a method for casting the refractory are also provided.

Abstract: The present invention provides a floor through-passage molding apparatus adapted for a floor construction, which comprises a forming sleeve, a first covering plate assembly, a second covering plate assembly and a plurality of retaining assemblies. Said forming sleeve has a sleeve wall defining a hollow channel, a first opening and a second opening. Said first and second covering plate assemblies are respectively disposed on the first and second openings of said forming sleeve. Said plurality of retaining assemblies passes through the hollow channel of said forming sleeve, and are respectively retained with the first and second covering plate assemblies by a plurality of corresponding retaining holes formed on said first and second covering plate assemblies, wherein positions of the plurality of corresponding retaining holes distributed on said first covering plate assembly or said second covering plate assembly jointly define at least one plane.

Abstract: A mold and die metallic material, an air-permeable member for mold and die use, and a method for making the same are provided. The mold and die metallic material is made by forming a mixed material containing stainless steel fibers with an equivalent diameter of 30-300 ?m and a length of 0.4-5.0 mm, and stainless steel powder, heat sintering a green body of the mixed material, and heating the sintered body thus obtained in a nitrogen atmosphere and nitrided; wherein average open pore diameter thereof is 3-50 ?m.

Abstract: A mold core package for forming a molding tool with a removable insert includes a plurality of stacked particulate layers having a binding agent. The plurality of stacked particulate layers form molding pattern walls that generally define a base mold cavity and an insert mold cavity defining a mold surface. A sacrificial displacement line extends through the insert mold cavity closely following contours of the mold surface.

Abstract: A layup mandrel includes a shell having a tool surface on which plies may be laid up. The shape of the shell is changed by an actuator.

Abstract: A ball is provided forming an inside structure of the snow person, the ball having an inner and outer surface. The ball is a unitary work piece that is free and unconnected to other work pieces. An adhesion surface is disposed on the outer surface of the ball, the adhesion surface provided with nodules that extend away from the surface of the ball to adhere snow while the ball is rolled. Light units are integrated into the surface of the ball and having light emitting portions that extend away from the surface of the ball. A light output of the light units is selected to transmit light through a layer of snow. Connections between the light units situated within the ball connect the light units together.

Abstract: The disclosure provides a method for fabricating a heat pipe, and an instrument of the method. The method for fabricating a heat pipe includes providing a hollow tube, wherein the hollow tube has an open end and a closed end; disposing a mandril into the hollow tube from the open end, wherein the inside wall of the hollow tube is separated from the mandril by a space, and wherein the mandril comprises a first portion and a second portion and the first portion has a thermal expansion coefficient larger than that of the second portion; filling up the space between the mandril and the hollow tube with a powder; performing a sintering process to the hollow tube, forming a first agglomeration region and a second agglomeration region; removing the mandril; injecting a working fluid into the hollow tube; and sealing the open end of the hollow tube.

Abstract: A cylindrical core member for manufacturing a tubular member by curing a resin solution coated on an outer circumferential surface thereof, includes a substrate, a releasing layer that is formed on the outer circumferential surface including a central portion of the substrate in the axial direction, and plural low releasing portions having lower releasing properties than the releasing layer at both end portions of the substrate in the axial direction, the plural low releasing portions being intermittently disposed on the outer circumferential surface in the circumferential direction, and present in some places in the axial direction of the core member main body at the circumferential of the core member main body at both end portions of the substrate in the axial direction.

Abstract: The present disclosure is directed to a refractory metal core for use in forming varying thickness microcircuits in turbine engine components, a process for forming the refractory metal core, and a process for forming the turbine engine components. The refractory metal core is used in the casting of a turbine engine component. The core is formed by a sheet of refractory metal material having a curved trailing edge portion integrally formed with a leading edge portion.

Abstract: An injection method for hollow products, a fusible core and the method for making the fusible core comprises putting a fusible Sn—Bi alloy core into a mold core, then both the product and the fusible core are taken out from the die. The fusible core is turned from solid to liquid state and is apart from the product. The inner wall of the core can be made using this method, and the plastic product can be with more shape in one-step molding to replace the metal in many fields. Complex core-pulling mechanism is not needed, thus the core structure is simplified, and the shape of die can be simplified. The fusible core is not needed to be maintenance for it will not be worn, because after each injection, the fusible core is recycled to make a new fusible core.

Abstract: The present invention relates to a refractory coating for producing mold coatings by application to inorganically or organically-bound molding materials in lost molds or to cores for iron and steel casting, wherein the ready-to-use refractory coating has proportion by weight of 0.001% or more and less than 1% of inorganic hollow bodies, which partially or fully consist of crystalline material and have a softening point of 1000° C. or higher.

Abstract: A method for producing an article (1) having a cavity (4), in which method a mould (2) provided with a core (3) is filled with article material, the article material is hardened around the core (3) to form the article (1), and the core (3) is removed from the solidified article (1). The core (3) is made of yttria tetragonal zirconia polycristal material (Y-TZP) or partially stabilized zirconium (PSZ), and after the hardening phase the core (3) is exposed to a steam atmosphere, after which the core (3) is removed from the article (1).

Abstract: A method for making a gas turbine component (100). A central core (20) is positioned to occupy a space that will define a central channel (42), and an outer channel core (30) is positioned spaced apart from the central core (20). A mold (35) is formed around the central core (20) and the outer channel core (30), so that an exterior wall (32) contacts the mold (35). A substrate material, such as a metal alloy (247) in liquid form, is added to the mold (35) to form an internal volume (41) of the component (100). The central core (20) and the outer channel core (30) are removed, and interconnect channels (44) are formed between the thus-formed central channel (42) and the inner portion (49) of the outer channel (62) thus far formed. A preform (55) is placed into the inner portion (49) and may have a desired outer surface (57) shape. An overlay material is applied to form an outer layer (60), thus defining the remainder of the outer channel (62), which is obtained upon removal of the preform (55).

Abstract: If a refractory metal core (RMC) is punched, the punching asymmetry may be reflected in an asymmetry of the cast article features cast by the punched features. The punched features may have a shear zone and a fracture zone. The shear zone of the RMC will cast a relatively narrow portion of the post near one end; whereas the fracture zone will cast a relatively broader portion near the other end. The broader portion will also have a relatively shallow transition to the adjacent face of the slot-like passageway cast by the RMC. Where there is a stress asymmetry in the cast article in-use, the punching direction may be chosen so that the relatively broad portions of the post fall along the relatively higher stress face of the passageway.

Abstract: A method for preparing a metal-based part, the method comprising applying a slurry to a surface of a temporary substrate to thereby form a slurry-coated temporary substrate, wherein the slurry comprises a Co-, Ni-, or Fe-based metal-based material, a binder, and a solvent; drying the slurry-coated temporary substrate to remove the solvent and to thereby form a coating layer having green strength; heating the coating layer to remove the binder; heating the coating layer to sinter the metal-based material into a continuous metal alloy layer; and separating the substrate from the coating layer. A powder metallurgy preform comprising a powder metallurgy green coating on a preform substrate.

Abstract: Aspects of the invention include methods for producing flowable compositions, e.g. pastes, that set into calcium phosphate containing products, where the products include autologous bone. Aspects of the invention further include compositions produced by the methods, as well as kits for preparing the same. The subject methods and compositions produced thereby find use in a variety of applications, including hard tissue repair applications.

Abstract: The invention relates to methods of making articles of semiconducting material and semiconducting material articles formed thereby, such as articles of semiconducting material that may be useful in making photovoltaic cells.

Abstract: A mandrel comprising a rigid inner core and an elastomeric outer layer that at least partially surrounds the rigid inner core, wherein the elastomeric outer layer is adapted to expand during a molding process to seal a cavity to prevent incursion of material injected during the molding process.

Abstract: The present invention is directed to a mold. The present invention is also directed to a device for processing the same, and a replica made therefrom. A device for processing the mold comprises a cutting unit carving a surface of the mold; a housing accommodating the cutting unit and having an aperture through which a portion of the cutting unit protrudes; at least one piezoelectric element disposed between the cutting unit and the housing; and a signal generator applying an electrical signal to the piezoelectric element. The mold comprises a plurality of linear peaks and grooves that are formed on a surface of the mold, wherein both or one of the peaks and grooves have random or periodic meandering-shape. A replica manufactured by the mold comprises a plurality of linear crests and valleys that are formed on a surface of the replica, wherein both or one of the crests and valleys have random or periodic meandering-shape.

Abstract: A collapsible material is provided which maintains a predetermined strength and shape until it is heated and increased in temperature to a desired temperature and then can collapse, after a lapse of a predetermined time. The collapsible material of the present invention is characterized by comprising a base formed of a hydrate of a hydraulic material and unexpanded vermiculite particles dispersed in the base. In the collapsible material of the present invention, it is preferable that the hydraulic material is formed of at least one of cement and gypsum and the unexpanded vermiculite particles are contained in an amount of 0.5 to 15 wt %. Also, in the collapsible material of the present invention, it is preferable that ash balloon particles are contained in an amount of 0.5 to 20 wt %. Further, in the collapsible material of the present invention, it is preferable that a coating film formed of a hydrate of the hydraulic material and silica powder is formed on the surface of the base.

Abstract: A core for investment casting processes includes a core comprising 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 an internal passageway includes the steps of forming one or more mold sections each having internal surfaces and at least one of the aforementioned cores for forming one or more turbine engine components having at least one internal passageway; assembling the one or more mold sections; introducing a molten alloy into the one or more assembled mold sections; and consuming the metal of the at least one core during the process.

Abstract: The present disclosure is directed to a refractory metal core for use in forming varying thickness microcircuits in turbine engine components, a process for forming the refractory metal core, and a process for forming the turbine engine components. The refractory metal core is used in the casting of a turbine engine component. The core is formed by a sheet of refractory metal material having a curved trailing edge portion integrally formed with a leading edge portion.

Abstract: Method of casting, comprising the following steps: obtaining a casting substance, submersing of mould parts into said casting substance, filling the said mould with casting substance by joining said parts thereof, retrieving said mould filled with casting substance in joint state, cooling the mould and extracting the cast from the mould. All parts of the mould are fully submersed in a container with the casting substance. All parts of the mould are connected within the submersed position. Connected mould is retrieved from the container with the casting substance. Casting device, realizing said method, comprising container with casting substance, mould comprising of one or more parts, submersing means, parts joining means, retrieving means. Container with casting substance adapted for full submersion and retrieving parts of the mould in connected and disconnected states. Casting device may be realized as conveyor line.

Abstract: Systems and methods according to the present invention provide casting molds having improved separability from cured molding material. A first system and method employ an extraction rim which provides a clamping surface to be used in conjunction with an extraction bridge which straddles a mold. A second system and method employ a reusable, expandable molding mandrel that may be used to form voids in a casting. A third system and method employ both the extraction rim and the reusable, expandable molding mandrel.

Abstract: 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 (3), via a respective bending of the core (17, 18) in the shape of a quadrant, wherein the second area (14) transitions into a part of the casting core (2) that forms the feed opening (12) of the cooling channel, and the first area (15) transitions into a part of the casting core (2) that forms the discharge opening (13) of the cooling channel. The two areas (14, 15) of the casting core (2) are disposed at a distance from one another, which corresponds at a maximum to two times the cross-sectional diameter of one of the two areas (14, 15). As a result, the throughflow of the cooling oil traversing the cooling channel is accelerated and the cooling of the piston improved.

Abstract: It is a technical common knowledge that a chaplet used in casting of a hollow casting is fusion-bonded with the melt and is incorporated into the casting. However, the adhesion between the chaplet and the casting body is not necessarily satisfactory, thereby incurring the strength reduction of a thin-wall hollow casting. A core for a thin-wall hollow casting according to the present invention is provided with a chaplet mounted thereon. The chaplet has arcuate portion 2 with a gap 5 and a plurality of projections 4 from an outer peripheral of the arcuate portion and is in contact with an inner wall 7 of a mold. The entire arcuate portion of the chaplet is included in a groove 6 formed around an outer peripheral portion of the core body. Only the projections 4 of the chaplet protrude from the core body, when the chaplet is inserted in the groove.

Abstract: The invention provides molds and mold inserts useful in the production of contact lenses. In particular, the invention provides high optical quality molds and inserts useful for manufacturing silicone hydrogel contact lenses.

Abstract: In certain exemplary embodiments of the present invention, three-dimensional micro-mechanical devices and/or micro-structures can be made using a production casting process. As part of this process, an intermediate mold can be made from or derived from a precision stack lamination and used to fabricate the devices and/or structures. Further, the micro-devices and/or micro-structures can be fabricated on planar or nonplanar surfaces through use of a series of production casting processes and intermediate molds. The use of precision stack lamination can allow the fabrication of high aspect ratio structures. Moreover, via certain molding and/or casting materials, molds having cavities with protruding undercuts also can be fabricated. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure.

Abstract: This invention relates to a system and a method of use for large ceramic member support and manipulation at elevated temperatures in non-oxidizing atmospheres, such as using carbon-carbon composite materials for producing high purity silicon in the manufacture of solar modules. The high temperature apparatus of this invention includes one or more support ribs, one or more cross braces in combination with the one or more support ribs, and a shaped support liner positionable upon the one or more support ribs and the one or more cross braces.

Abstract: In a process for the cultivation of living cells, in which the cells are cultivated on a support structure (14), the support structure (14) comprises cellulose. A process for the production of a support structure (14) of cellulose for the cultivation of living cells comprises the steps: preparation of a hollow mould; cultivation of cellulose-forming organisms in an interior space formed by the hollow mould, in order to allow the support structure (14) to grow in the interior space; demoulding of the hollow mould. In the step of demoulding the hollow mould, at least part (2, 3, 4) of the hollow mould is irreversibly deformed.

Abstract: Ocular implant devices (10, 20, 121) for the delivery of a therapeutic agent to an eye (101, 301) in a controlled and sustained manner. Dual mode and single mode drug delivery devices (10, 20, 121) are illustrated and described. Implants (10, 20) suitable for subconjunctival placement are described. Implants (121, 10, 20) suitable for intravitreal placement also are described. The invention also includes fabrication and implementation techniques associated with the unique ocular implant devices (10, 20, 121) that are presented herein.

Abstract: Disclosed is a moulding core for producing a fibre composite component, in particular a stringer on a base component in aerospace, of a spiral construction, wherein the moulding core is a hollow profile with an outer geometry adapted to the moulding core and with a slit provided in the wall of the hollow profile and extending spirally around its periphery; and wherein the slit hollow profile is provided with positional fixing, wherein the slit extending spirally around the periphery penetrates the wall of the hollow profile with the exception of at least three locations arranged such that they are distributed around the circumference of the wall of the hollow profile. A method for producing a fibre composite component, such as a fibre composite component for aerospace, is also disclosed.

Abstract: A turbine engine airfoil includes an airfoil structure having an exterior surface and an end portion. A cooling passage extends a length radially within the structure in a direction toward the end portion. The cooling passage provides a convection surface along the length adjacent to the exterior surface. The convection surface includes a generally uniform width along the length. The cooling passage has generally decreasing cross-sectional areas along the length in the direction.

Abstract: A device including an annular undercut having a curved cross-sectional shape made by electrical discharge machining (EDM) is disclosed. An exemplary device with an EDM-formed annular undercut is a tool used for injection-molding of plastic parts having a crab's claw seal.

Abstract: A mold core includes a substrate, rounded deposition islands distributed on the substrate, and molding layer portions formed on the deposition islands. Each of the molding layer portions encloses a corresponding deposition island.