Abstract: A gasket and mandrel assembly, including a gasket having an annular main body portion with an anchor flange and a pipe sealing portion. The gasket is foldable between a folded position in which the pipe sealing portion is disposed substantially within the main body portion and an unfolded position in which the pipe sealing portion extends outwardly of the main body portion along its longitudinal axis. A pair of mandrels are respectively fitted on opposite sides of the folded gasket to enclose most of the gasket for casting the gasket within a wall in a concrete structure. At least one of the mandrels includes an annular outer surface aligned parallel or substantially parallel with the longitudinal axis of the gasket.

Abstract: There is disclosed a method of forming a fabric 1 on the surface of a mandrel 10, infiltrating the formed fabric with matrix, and leaving portions 12a, 12b of the mandrel as integral with the fabric and removing the mandrel before the fabric adheres to the mandrel by matrix infiltration. Subsequently, a remaining portion of the mandrel is used as a reference surface and machining is performed. Without possibility of adhesion to the mandrel and resulting breakage, machining bases (axial center and reference surface) during machining can accurately be provided, and this can largely enhance machining precision and yield of a final product.

Abstract: An improved core for creating wax patterns of golf club heads is disclosed herein. The core includes a center core piece and several outer core pieces removably coupled to the center core piece by magnets embedded in each of the core pieces. The core further includes a pneumatic release system, including a manifold, to easily separate the center core piece from the outer core pieces and expel the center core piece from a wax pattern, thereby eliminating the need to pry and pull pieces out with a tool, which could damage the wax pattern of the golf club head.

Abstract: There is disclosed a method of connecting a plurality of mandrels to one another to constitute an integral mandrel 10, forming a fabric 1 on the surface of the integral mandrel, and infiltrating the formed fabric with matrix. A plurality of products can simultaneously be manufactured, and this can remarkably reduce fiber loss and enhance productivity.

Abstract: An apparatus and method for molding three-dimensional articles having interstitials. The article has elongate elements and interstitials between the elongate elements. The interstitials may extend entirely through the article, or intercept only the periphery of the article. The article may be formed by injection molding, using two or more mold segments, each having elongate members. The mold segments are separated from each other in a separation direction. The separation direction is parallel to the elongate members of the mold segments and/or the elongate elements of the article. The method and apparatus according to the present invention is useful for making a static mixer, heat exchanger or similar article.

Abstract: A lost mold element for manufacturing reinforced concrete flat slabs, which is intended, when used together with other mold elements, for creating voids and for allowing the molding of beams. The mold element is made of a recycled plastic material, having a shape of a hollow box, substantially of a flat prismatic shape, and preferably rectangular or square, which is formed from two half boxes including an upper half box and a lower half box joined together removably. Each mold element has side or lateral walls with profiles that define together with other side or lateral walls of other mold elements an I-profiled channel or I-degenerated profiled channel for molding beams. Further, between the side or lateral walls are arranged steel rod attachments and distribution supports for securing the steel rods, and for reinforcement of the I-profiled or I-degenerated profiled beams. Such a mold element can be used in the building industry.

Abstract: An insert is provided for forming a void in precast concrete that includes a tube defined by a wall and having a plurality of formed, longitudinally spaced-apart ribs that project radially outwardly from an outer surface of the wall. A plurality of corresponding recesses are defined in an interior surface of the wall. A plurality of score lines are positioned between the ribs so that the tube may be adjusted in length to meet the particular requirements associated with a specific design of precast concrete. At least one removable cap is positioned in an open end of the tube so as to prevent concrete from entering the tube during casting. A method for forming a void within a precast concrete structure is also provided in which the tubular sleeve assembly is positioned within a form containing uncured concrete, and one or more of the score lines are cut so as to adjust the length of the tube.

Abstract: A shoe vamp having a pattern includes a pattern layer, and a thermoplastic layer. The pattern layer is permeable and expandable, and includes an outer side printed with a pattern. The thermoplastic layer includes an outer layer and an inner layer. The outer layer infiltrates into the outer side of the pattern layer to wholly and completely cover and encompass the outer side of the pattern layer. The inner layer covers the inner side of the pattern layer and combines with the outer layer. Thus, the surface of the shoe vamp is formed with a pattern which is changed and varied according to the pattern variations of the pattern layer, thereby enhancing the versatility of the shoe vamp, and thereby enhancing the aesthetic quality of the shoe vamp.

Abstract: A rubber track T has a plurality of guide lugs 50 arranged in two rows, one row being on each lateral edge. The guide lugs 50 of the first row are circumferentially offset from the guide lugs 50 of the second row. The track T is molded on an axially separating mold core D that is designed to form the radially inner guide lugs 50 without requiring a radially collapsible core.

Abstract: This invention is related to a mold for casting and manufacturing of concrete structural columns that includes a main cylindrical body and a plurality of mould components placed inside such main body. Likewise, this invention refers to the process to set the mold and the process to use such mold in casting and manufacturing of concrete structural columns.

Abstract: A collapsible corner assembly is used in a collapsible form assembly to form a hollow structure, such as a four or five sided hollow concrete structure. One embodiment of the form assembly includes two collapsible corner assemblies, two fixed corner assemblies, and intermediate panels coupled to the corner assemblies. Each collapsible corner assembly preferably includes collapsible side portions and retractable members forming outer corner forming surfaces. To collapse the collapsible corner assembly, the retractable members are retracted and the collapsible side portions are moved inwardly. Collapsing the collapsible corner assemblies allows the form assembly to be removed from the hollow structure.

Abstract: A system and associated method for forming a window opening in a poured concrete wall and installing a window therein includes a two-piece reusable window buck having a retainer temporarily coupled thereto. The retainer becomes partially embedded in the poured concrete wall and after the window buck is removed from the window opening formed in the wall, the window is easily and conveniently installed in the window opening and secured therein by the window retainer and cooperating spring clip on the window frame without the need for additional mechanical fasteners or tools.

Abstract: The invention relates to a device for casting a workpiece, especially a turbine blade with inner cooling, comprising a casting cavity (1) in which casting cores (2) which produce channels (3) that pass through the workpiece are provided. The aim of the invention is to improve a device of this type in such a way that there are no poorly cooled areas present in the workpiece. To this end, the casting cores (2) are placed in the casting cavity (1) in such a way that they rest against each other loosely.

Abstract: An improved molded plastic elbow and a related mold assembly and manufacturing method are provided, wherein the elbow defines an internal flow path having a smoothly radiused inside turn. The elbow is formed by injecting plastic material into a tubular mold cavity formed by closed mold members in cooperation with a pair of slidably retractable core units of circular cross section and having distal ends in mating, angularly set end-to-end contact to form the internal flow path having a turn formed along the length thereof. Each core unit comprises an outer core pin to form an outer portion of the flow path and including a ramped track for slide-fit mounting of an inner slide segment which forms an inner portion of the flow path and further includes a curved inside edge to form a portion of the smoothly radiused inside turn.

Abstract: A method of forming a curved hose and a mandrel for forming a curved hose is disclosed. A hose length is inserted onto a multi-legged mandrel to form a curved hose. The mandrel has at least two legs and the opposing ends of the hose are placed on the mandrel legs such that a portion of the hose is unsupported by an internal mandrel. The unsupported portion of the hose may be straight or may be looped to form a more complexly curved hose. The unsupported portion of the hose may also be held in position by an external mandrel.

Abstract: A method of forming a cannula by forming a cannula mandrel assembly having a nare mandrel, a main body mandrel and mouthpiece mandrel; heating the cannula mandrel assembly, applying a polymeric material to the cannula mandrel assembly to provide a desired material thickness on the mandrel assembly to form the cannula, curing the polymeric material of the formed cannula and extracting the mandrel assembly from the cannula by disassembly and removal of the mandrel assembly parts.

Abstract: A method of forming a cannula by forming a cannula mandrel assembly having a nare mandrel, a main body mandrel and mouthpiece mandrel; heating the cannula mandrel assembly, applying a polymeric material to the cannula mandrel assembly to provide a desired material thickness on the mandrel assembly to form the cannula, curing the polymeric material of the formed cannula and extracting the mandrel assembly from the cannula by disassembly and removal of the mandrel assembly parts.

Abstract: A system and associated method for forming a window opening in a poured concrete wall and installing a window therein includes a two-piece reusable window buck having a retainer temporarily coupled thereto. The retainer becomes partially embedded in the poured concrete wall and after the window buck is removed from the window opening formed in the wall, the window is easily and conveniently installed in the window opening and secured therein by the window retainer and cooperating spring clip on the window frame without the need for additional mechanical fasteners or tools.

Abstract: A placement ring assembly has inside and outside mandrels releasably fastened together to secure and align a pipe connector gasket therebetween. A permanent magnet of a magnet assembly is inserted through co-aligned openings in the mandrels and is magnetically attracted to an inner-core of a casting assembly. When the cast member is set, a mechanical release is rotated to release the magnetic attraction between the permanent magnet and the mold core. One of the mandrels may be provided with shock absorbing knockout pads while the other mandrel has openings aligned with the knockout pads to enable the knockout pads to be struck with a hammer to separate the mandrels. Rubber cushioning members absorb the shock of the impacts, protecting the mandrel from permanent damage. One-piece hole formers may likewise be provided with a magnetic assembly having a mechanic release as well as knock-out pads.

Abstract: An injection molding tool for producing a cage for a linear bearing in which several rolling elements are positioned in the cage in the direction of its longitudinal extent in the assembled state includes two tool halves each provided with protrusions. The protrusions extend into the cavity of the tool during the injection molding process and form a portion of a receiver pocket for receiving a rolling element. To make the injection molding process simple and economical, the protrusions are fixedly connected with the tool halves, with the protrusions being are shaped in such a way that, when acting together, they form holding elements for retaining the rolling elements in the receiver pockets in the cage when the injection molding tool is closed. The holding elements are thus integrated into the basic geometry of the cage.

Abstract: The present invention is directed to a multi-part form, for use in forming an inner wall of a mold. The multi-part form includes a consumable exterior wall for contacting a casting compound. A collapsible intermediate wall contacts an inner side of the exterior wall and an interior wall is slidably engaged with the intermediate wall. The present invention is also directed to a method of forming a containment member for molten metal. A mold having an inner wall is provided. The inner wall includes a consumable exterior wall for contacting a casting compound, a collapsible intermediate wall that contacts an inner side of the exterior wall and an interior wall that is slidably engaged with the intermediate wall. Also provided is an outer wall that substantially surrounds the inner wall and defines a space between the outer wall and the inner wall. Casting compound is poured into the space and the casting compound is allowed to set.

Abstract: A method and tooling concept for fabricating complex composite parts is provided. The method and tooling concept use various tooling configurations in order to produce varying magnitudes of thermal expansion at different areas within the tooling concept. The varying magnitudes of thermal expansion allow the tool concept to account for varying magnitudes of tool movement needed to debulk and consolidate varying thickness areas of the composite workpiece being cured. The tooling concept is formed of different materials having different thicknesses that allow the tooling concept to produce varying magnitudes of thermal expansion. The exterior surface of the tooling concept is covered by a compliant covering. The compliant covering helps to equalize the consolidation pressures produced by the tooling concept during curing. A composite wing box structure fabricated using the method and tooling concept is also disclosed.

Abstract: A placement ring assembly has inside and outside mandrels releasably fastened together to secure and align a pipe connector gasket therebetween. A permanent magnet of a magnet assembly is inserted through co-aligned openings in the mandrels and is magnetically attracted to an inner-core of a casting assembly. When the cast member is set, a mechanical release is rotated to release the magnetic attraction between the permanent magnet and the mold core. One of the mandrels may be provided with shock absorbing knockout pads while the other mandrel has openings aligned with the knockout pads to enable the knockout pads to be struck with a hammer to separate the mandrels. Rubber cushioning members absorb the shock of the impacts, protecting the mandrel from permanent damage. One-piece hole formers may likewise be provided with a magnetic assembly having a mechanic release as well as knock-out pads.

Abstract: A system and associated method for forming a window opening in a poured concrete wall and installing a window therein includes a two-piece reusable window buck having a retainer temporarily coupled thereto. The retainer becomes partially embedded in the poured concrete wall and after the window buck is removed from the window opening formed in the wall, the window is easily and conveniently installed in the window opening and secured therein by the window retainer and cooperating spring clip on the window frame without the need for additional mechanical fasteners or tools.

Abstract: Apparatus for creating a sleeveless passage of controlled size and shape through a concrete wall poured in a form including two form plates mounted in fixed, spaced relation separated by a width W comprises a plurality of modular, one piece passage units, each unit including an annular main shell of external size and shape conforming to a segment of the sleeveless passage; each unit has end closure walls closing the ends of the main shell. Each modular unit has an axial length L1 that is smaller than W. Each modular unit also has interlock elements that interconnect with another like modular unit so that the main shells of the units can be aligned with each other in one integral assembly between the two form plates.

Abstract: A reinforced box-like structure for forming a void area in a concrete formation. The structure includes a bottom panel having a plurality of spaced apart, parallel base partitions and a top panel having a plurality of spaced apart, parallel top partitions. The base partitions extend across the bottom panel and in a direction normal to the bottom panel, and the top partitions extend across the top panel and in a direction normal to the top panel. Each of the base partitions and top partitions include a plurality of double-thickness walls with a plurality of slots therein and flat top edges between the slots. The structure is assembled by superimposing the top panel over the bottom panel such that the base partitions extend transversely relative to the top partitions.

Abstract: An attachment mechanism for a hole form that is used to secure the hole form to a form wall during a casting process. The attachment mechanism includes a hole form having an opening formed in the face thereof and a magnet assembly which is received in the opening of the hole form. The magnet assembly can include a flange portion which can be received in a corresponding stepped portion of the opening. The magnet assembly is removable and can be used in other hole forms.

Abstract: A wedge apparatus for use with molds and a mold utilizing at least one wedge apparatus. The wedge apparatus includes a pair of attachment portions, each having an attachment surface and a wedge surface, a wedge portion, and a shaft. The wedge portion is slidably attached to the attachment portions and has a center portion terminating in a pair of center edges disposed at opposite angles to the wedge edges such that the center surface and the wedge surfaces form a substantially continuous mold surface. The shaft is attached to the center portion and extends through an opening through a cross member to maintain the center edges of the wedge portion in alignment with the wedge edges of the attachment portions.

Abstract: The internally air cooled turbine cast blade is molded with a ceramic core for defining the interior cavity with coolant passages where the ceramic core is configured to fair radially inwardly at the attachment portion of the blade until they form a single wall, parallel to and centered in the blade attachment. The blade is cast in the mold by pouring molten metal into the mold, curing and the core is leached once the metal is cured and the mold removed. Another embodiment includes a metering plate attached to the root of the blade for metering coolant to provide a coolant to gas flow ratio at the film cooling holes.

Abstract: The invention relates to a set of parts for use in building, comprising a plurality of separate parts which are assemblable to provide a former for defining a desired configuration in a set settable material, characterised by at least two interengageable surface forming parts (2, 3), and by a thrust part (4) which maintains the surface forming parts (2, 3) in an assembled position, and by the thrust part (4) being removable to allow the surface forming parts (2, 3) to be moved from the set settable material whereby to leave the desired configuration (7) in that material (6).The invention also extends to a constructional method, and to a building or part thereof constructed using the set of parts described.

Abstract: The present invention permits reliable lifting and inverting of one or more casting core elements and positioning the one or more casting core elements in a mold flask. The invention generally includes an outer frame and an inner frame assembly, which are coupled such that they may move vertically relative to each other. The invention further includes apparatus which engage the casting core and invert the casting core, and further align the casting core to a mold to which the core is transferred. The present invention also allows for simultaneous engaging, inverting and aligning of a plurality of core elements. The present invention allows cores to be inventoried and located for automatic handling in a position that permits visual inspection and reliable handling and placement at high production rates therefor.

Abstract: This invention is a paper-based concrete form member and a method for using it. The forms may be made from layers of paper honeycomb material or corrugate. The forms may be structured to be hollow, if so desired. They are principally useful in forming recesses or voids in concrete structures although they may be used to form the edges of concrete products during construction of these products.

Abstract: The internally air cooled turbine cast blade is molded with a ceramic core for defining the interior cavity with coolant passages where the ceramic core is configured to fair radially inwardly at the attachment portion of the blade until they form a single wall, parallel to and centered in the blade attachment. The blade is cast in the mold by pouring molten metal into the mold, curing and the core is leached once the metal is cured and the mold removed. Another embodiment includes a metering plate attached to the root of the blade for metering coolant to provide a coolant to gas flow ratio at the film cooling holes.

Abstract: A hole former for use in forming a concrete wall section having a hole extending therethrough. The concrete wall section is fabricated in a cavity that is defined by a first and a second form. The hole former comprises a plug and a preferably detachable suction cup. The suction cup retains the plug in a selected position between the first and second forms while concrete is being poured into the cavity.

Abstract: The invention relates to concrete form panel sheeting comprising a resinous polymer core defining a concrete-form face and an opposite face, and a concrete-facing surface layer attached to the concrete-form face, the concrete-facing surface layer being adapted to be contacted by fresh concrete and to release from the concrete after curing thereof, to facilitate reuse of the concrete form panel sheeting. The invention further relates to concrete forms and form networks having the inventive concrete form panel sheeting as a component therein. The invention also relates to applications using the sheeting and forms to pour concrete.

Abstract: A molding die assembly includes an outer molding die which forms an outer peripheral surface of a cylindrical mold, and, an inner molding die which forms an inner peripheral surface of the cylindrical mold, wherein the outer molding die is comprised of a plurality of split die elements which are split at an oblique separating surface inclined with respect to the circumferential and axial directions of the cylindrical mold.

Abstract: A collapsible core for concrete pipe making machines that are used in the dry cast process when lined pipe are to be produced. The collapsible core of the invention has a moveable front panel joined to two moveable side panels, all of the panels being connected to hydraulically powered linkage arrangements that will pull the panels straight back from the liner. The collapsible core is constructed so that when moveable panels of the core are retracted to collapse the core, the core panels are guided along radial lines of the core to pull the panels directly away from the pipe liner, thus practically eliminating the friction that causes bulging or pull out of the liner from the concrete pipe.

Abstract: A model for a casting mold, particularly for the casting of blade wheels for turbo-engines, includes multiple cores which can be fitted into one another. The cores have exterior rings, portions of blade duct cores and connector plates. The portions of the blade duct cores supplement one another.

Abstract: A core ring assembly for use in production of a plastic injection-molded component is formed by injecting molten metal alloy into core dies to produce two intricately shaped ring type elements--one male, one female. Removing the male and female ring elements from the core dies and combining the two elements in an assembly machine to form a uniform, geometrically symmetrical, integral core ring assembly. The core ring assembly is transported to a plastic molding machine for overmolding the core ring assembly with either thermosetting or thermoplastic material. Then, the core assembly is melted out from the plastic component in a hot oil bath or induction melt-out, and the molten alloy recovered thereby is returned to a molten metal alloy tank for reuse.

Abstract: A molding device for a register of synthetic resin adapted for use in adjustment of air flow, wherein a pair of outer frame members, a plurality of spaced adjustment blades and a link member of the register are separately formed and assembled during a molding process without. manual work required heretofore for connecting the link member with the adjustment blades for interconnection thereof.

Abstract: A golf club head wax pattern molding process, employing a mold having a first cavity and cores in the mold cavity, including closing the mold with the cores positioned in the mold cavity, certain of the cores slidably interfitting endwise; injecting flowing heated wax into the mold to flow about the cores; allowing the injected wax to cool and solidify to form the wax pattern; removing the cores from the solidified wax pattern, while the mold holds the pattern in position in the mold, by endwise removing the cores in sequence; and opening the mold and removing the unencumbered wax pattern from the mold.

Abstract: A plastic liner for protecting concrete manhole interior surfaces from corrosion wherein the liner includes provisions for creating a strong mechanical lock between the liner and the interior surfaces. A side of the liner which includes the provisions has a plurality of raised hollow projections with spaced sections. The mechanical lock is created when concrete is poured against the side of the liner with the projections. The concrete at least partially enters the hollow portions and fills spaces between the projection sections. The projections also intersect to enhance the mechanical lock by preventing bulging. Liner sections cover essentially all of the manhole interior surfaces. Forming a liner section by rotationally molding the plastic and cutting gaps into the projections is also disclosed.

Abstract: The invention relates to a pipetting aid for exerting suction on liquids. The usual previous "Peleusball" has disadvantages when handling and with regard to washing out. The object of the invention is to create a pipetting aid through constructive change, which is functionally safe and easy to handle and which at the same time allows uncomplicated cleaning of the inside.

Abstract: A core ring assembly for use in production of a plastic injection-molded component is formed by injecting molten metal alloy into core dies to produce two intricately shaped ring type elements--one male, one female. Removing the male and female ring elements from the core dies and combining the two elements in an assembly machine to form a uniform, geometrically symmetrical, integral core ring assembly. The core ring assembly is transported to a plastic molding machine for overmolding the core ring assembly with either thermosetting or thermoplastic material. Then, the core assembly is melted out from the plastic component in a hot oil bath or induction melt-out, and the molten alloy recovered thereby is returned to a molten metal alloy tank for reuse.

Abstract: A wax pattern molding process, employing a mold having a cavity and a core structure in the mold cavity that include closing the mold with the core structure positioned in the mold cavity; injecting flowing heated wax into the mold to flow about the core; allowing the injected wax to cool and solidify to form the wax pattern; removing the core structure from the solidified wax pattern, while the mold holds the pattern in position in the mold; and opening the mold and removing the unencumbered wax pattern from the mold.

Abstract: A sleeve assembly for forming a lined opening in molded structures made from concrete or the like. The sleeve provides the lining. During formation of the structure, the sleeve is held in place by a pair of generally hemispherical end cups having tapering and/or curving surfaces for supporting sleeves of a variety of sizes. The end cups are preferably held in place by a retainer which passes through the sleeve and is connected to the end cups by loose fitting clips which are mounted in the end cups. The sleeve assembly is adapted to be secured between a pair of generally parallel panels between which a molded structure such as a wall is formed.

Abstract: Reusable core apparatus for a casting mold is disclosed. The apparatus includes a first core mechanism for being disposed in a casting cavity of the mold to define a first internal casting surface within the cavity, a second core mechanism for being disposed in the casting cavity to define a second internal casting surface in the casting cavity, and a securing mechanism for securing the first and second core mechanisms together in a predetermined engaging relationship within the casting cavity. The securing mechanism is adapted to maintain the first and second core mechanisms in the predetermined engaging relationship while an article is being cast in the mold and to release the first an second core mechanisms from the predetermined engaging relationship after the casting process so that the first and second core mechanisms may be directly and easily disengaged with each other and from a cast part so that the first and second core mechanisms may be reused in casting additional parts.

Abstract: The mold that belongs to a cardboard box forming machine is comprised of four forming corners, equal to each other, assembled in such a way that they can be moved longitudinally and transversally in order to carry out the adjustment of length as well as width of the boxes to be formed. The adjustment of length is achieved as a result of the corners being assembled on bushings threaded on spindles, each one of the latter having two sections threaded in a different direction so that the rotation of the former involves contrary movement of each pair of forming corners assembled on each spindle. The adjustment of width is achieved on the grounds of movement of said forming corners along linear guides upon which corresponding bridges slide. Forming corners are also completed with means retaining the box during its formation and pressing means for gluing of the corresponding laps.

Abstract: An apparatus for molding a tamper evident closure having a top, an annular skirt depending from the top, and a breakaway band secured to an underside of the skirt by a plurality of bridges includes a mold frame, a cavity portion releasably secured to the frame and configured for forming an outer surface of the closure, a core portion nestable into the cavity portion and mounted on the frame for reciprocal axial movement relative to the cavity portion, a slide portion mounted to the frame for reciprocal movement transverse to the axial movement of the core portion between a closed position and an open position, and a stripper device located on the frame for disengaging molded closures retained on the slide portion as the slide portion moves from the closed position to the open position.

Abstract: A mandrel for making a rigid tubular article that has integrally-formed straight and arcuate portions. The mandrel has a plurality of shape-providing elements slidably disposed on interconnected straight and arcuate rods. After a rigid tubular article has been formed about the mandrel, the shape-providing elements can be slid off the straight and arcuate rods so that the mandrel can be removed from the rigid tubular article's interior. This provides for easy separation of the mandrel from the tubular article.