Abstract: A direct method for manufacturing a large model fractured core and maintaining original oil-water saturation, including the following steps: (1) determining the volume V, porosity ?, permeability K, oil saturation So, water saturation Sw and the like of a fractured core to be manufactured; (2) preparing simulated oil, and determining the used oil mass mo=Vo×?o; (3) under the circumstance of no consideration of oil saturation, acquiring the mass of the used water, cement and quartz sand; (4) while establishing oil saturation, acquiring the mass mw of water for manufacturing the core as mw=a?Vo×?w; (5) mixing oil, water and an emulsifier evenly to prepare an oil-in-water emulsion; (6) adding cement and quartz sand into the emulsion and stirring evenly to obtain cement slurry; (7) when a cement sample is in a semi-solidified state, cutting the cement sample with a steel wire; and (8) solidifying the cement sample to the end.

Abstract: A panel may be formed with mandrels inside of stiffening members. The panel may be coupled to a panel holding jig. A winch may be coupled to the mandrels. The winch may pull the mandrels out of the stiffening members and into curved tracks.

Abstract: The technical solution relates to the field of processing polymers and can be used in various branches of the national economy for manufacturing hollow articles of the bodies-of-revolution type (tubes), and in particular for manufacturing semifinished biodegradable polymeric stents which are usable in medicine for replacing hollow organs, for example blood vessels. The apparatus for manufacturing thin-walled bodies of revolution comprises a heatable expander which is mounted rotatably about a longitudinal axis, and a feeder for supplying moldable material, said feeder being mounted above the expander so as to be movable therealong, wherein the lower part of the feeder is heatable, the expander is hollow with a reflective internal surface, and the heater of the expander is in the form of a laser, the radiation of which is transported into the expander.

Abstract: A core form device including a circular plate and a plurality of bendable arms extending from the circular plate which when bent about the circular plate form the core form device.

Abstract: The invention provides a method of laying a foundation of a tower construction which comprises a base flange. The method comprises the steps of: providing a number of anchor rods, providing a ring-shaped formwork, arranging the anchor rods in a pit in the ground, arranging the formwork in engagement with the anchor rods so as to be supported thereby, casting a concrete element, casting a second casting layer in a groove in the concrete element, the groove being provided by the formwork, lowering the base flange onto the second casting layer, and fixing the base flange to the concrete element.

Abstract: An expandable molding insert apparatus and corresponding method are provided. The insert apparatus may be expandable between a first uncompressed position with a first diameter and a second compressed position with a second, larger diameter due to axial decompression and compression, respectively, of the insert apparatus. For example, the insert apparatus may include an inner rod, an outer jacket, and a compression member. The compression member may be configured to provide axial compression to the outer jacket, such that the outer jacket may be adjusted between a first uncompressed position with a first outer diameter and a second compressed position with a second, larger outer diameter. The insert apparatus of the present disclosure facilitates withdrawal of the insert apparatus from a molded component, requires a minimal number of mechanical components, and provides for ease of actuation when the insert apparatus is utilized during a molding process.

Abstract: A collapsible bladder has flexible outer walls and at least one strut inside the enclosure. The strut is connected to the outer walls and controls the shape into which the enclosure may be collapsed.

Abstract: A form for forming a void or an architectural feature of a predetermined configuration in a moldable forming composition is disclosed. Embodiments of the invention provide an adjustable form body having first and second sides, said form body configurable between a first substantially planar position and a second non-planar position. In some embodiments, the form comprises a surface coating. A form body according to example embodiments of the invention has a plurality of grooves.

Abstract: A method of making an endovascular prosthesis comprises the steps of applying a first layer of polymer to a portion of a deformable matrix, contacting a stent with the polymer to deform the matrix, applying a second layer of polymer over at least a portion of the stent and first layer, solidifying the layers of polymer to form the endovascular prosthesis, and removing the matrix.

Abstract: A mold for manufacturing a composite drive shaft, most of which, except for opposite ends functioning as power transmission parts, has a tubular shape with a circular cross-section similar to that of a general shaft, and the shape of each end of which is changed so as to realize easy removal of the drive shaft from the mold after molding. Further, the present invention provides a composite drive shaft, which is manufactured using the mold and is configured such that, when a connection joint (metal yoke) is assembled with each end of the drive shaft, the drive shaft can be rotated in an integrated state realized by the connection joints. Thus, the composite drive shaft of the present invention can directly transmit power, instead of a mechanical fastening jointing technique or an adhesive bonding jointing technique, thus efficiently transmitting high torque.

Abstract: A flexible mold for a smoking device having a cup-shaped outer wall, a cup-shaped inner wall, and a third cup-shaped wall. The outer wall has a continuous sidewall connected to a bottom wall containing a central opening. The sidewall of the outer wall extends from the bottom wall of the outer wall to an open end and contains an opening in the sidewall spaced between the bottom end and the open end. The inner wall has a continuous sidewall, a cover closing one end. The sidewall of the inner wall is attached to the bottom wall of the outer wall surrounding the central opening. The third wall has a continuous sidewall and a closed end. The sidewall of the third wall is connected to the sidewall of the outer wall surrounding the opening in the outer wall. The closed end abuts a surface of the inner wall.

Abstract: A method for producing a cementitious slab including mixing together cement with other materials with the combined mixture of materials having physical particle sizes sufficiently small to allow the material to be cut with a vibrating cutting tool when the material is a semi-set state.

Abstract: A wall form tie retrieval system is disclosed that provides a wall form tie casing. The casing can be a channel sized to fit between two assembled concrete wall forms. A lid can be manufactured to fit on the channel to surround the wall form tie when assembled. The wall form tie secures the two concrete wall forms together and the channel can space the forms apart a predetermined distance. The channel can have an open side and a lid to engage the open side of the channel such that placement of the lid substantially encloses the wall tie. After concrete is poured and cured, the wall form tie can be removed from the casing and re-used. The plastic or reinforced paper wall tie casings can be manufactured for a fraction of the cost of the metal ties, thus saving money in the construction of concrete walls.

Abstract: Method for producing a fibre composite component, in particular for aerospace, having the following method steps: forming a moulding core that comprises a predetermined number of hollow bodies for defining an external geometry of the moulding core, the hollow bodies being designed such that they extend in the longitudinal direction of the moulding core and are expandable elastically at least in their lateral direction, and are fixed to one another, the formed moulding core having a flexible outer layer for smoothing the contour of its outer surfaces, and a core sleeve surrounding the moulding core, for sealing the moulding core from the fibre composite component to be produced; placing at least one fibre semi-finished product, at least in places, on the moulding core that has been formed, in order to shape at least one moulding section of the fibre composite component to be produced; and applying heat and/or pressure to the at least one moulding section in order to produce the fibre composite component.

Abstract: A manufacturing method of a color filter substrate includes forming a black matrix on a substrate, the black matrix including first, second, third and fourth openings, forming first, second and third color filter patterns in the first, second and third openings, forming an overcoat layer on the substrate, disposing a soft mold on the organic material layer, the soft mold including first depressed portions and a second depressed portion, the first depressed portions corresponding to the black matrix, and the second depressed portion corresponding to the fourth opening, wherein a first depth of the first depressed portions is larger than a second depth of the second depressed portion, applying pressure to the soft mold such that the first and second depressed portions are filled with the overcoat layer, first curing the overcoat layer, detaching the soft mold from the overcoat layer, and second curing the overcoat layer.

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: A use of a core block for an impregnation process as well as a composite structure comprising such a core block is described. The core block has a first surface and a second surface, and a number of first grooves is formed in the first surface of the core. Furthermore, a number of second grooves is formed in the second surface of the core. The first grooves have a first height (h1) and a bottom, and the first grooves and the second grooves are part of a resin distribution network formed in the core block. The distance (t) between the bottom of the first grooves and the second surface of the core block is of such a size that the core block is flexible along the first grooves. Additionally, the sum of the first height and the second height is larger than the thickness of the core block, and at least one of the first grooves in the first surface of the core block crosses at least one of the second grooves in the second surface of the core block.

Abstract: A tool assembly including a male tool including an inner shape tool including a bag having a connection connectable to a depressurization source for providing a vacuum in the bag such that beads therein form a body of firm cohesion providing the inner shape tool rigid. The male tool further includes a flexible, hollow curing support arranged around the rigid inner shape tool, the inner shape tool is arranged to be removable from the flexible, hollow curing support by rupturing the vacuum.

Abstract: A molded article is disclosed. According to an embodiment, the molded article includes a blow-molded parison of material having an undercut formed in a surface of the parison of material. An apparatus for providing an undercut molding feature in a mold tool is also disclosed. According to an embodiment, the apparatus includes one or more undercut forming surfaces and an actuator pin that causes the one or more undercut forming surfaces to move to/from an undercut molding position or an undercut de-molding position. A method for providing an undercut molding feature in a mold tool is also disclosed. According to an embodiment, the method includes the step of moving an actuator to a position of engagement with one or more undercut forming surfaces to cause movement of the one or more undercut forming surfaces to/from an undercut molding position and an undercut de-molding position. A method for molding a molded article is also disclosed.

Abstract: Method for producing a fibre composite component, in particular for aerospace, having the following method steps: forming a moulding core from a core material with a predetermined narrow melting range in a moulding tool to establish an outer geometry of the moulding core at least partly laying at least one semifinished fibre product on the moulding core that is formed, for the shaping of at least one moulded portion of the fibre composite component to be produced; and multistage exposure of at least the moulded portion to heat and/or pressure to produce the fibre composite component; a corresponding moulding core for producing such a fibre composite component and a corresponding fibre composite component with at least one stringer.

Abstract: The present invention provides for an improved device for molding keyhole sipes larger in size, i.e. sipes having a wider passage, than currently being formed in treads that will avoid damaging the tread during formation and removal thereof from a mold. The device includes an elongated deformable body member having a blade extending in a direction away therefrom and substantially along the length thereof. The body member also includes a stiffening member securely fixed in position therein that extends substantially the length thereof. The stiffening member provides a desired rigidity to the deformable body member, thereby limiting flexion along its length under the stress of a rubber formulation when the mold is closed during the molding process. Also, the deformable body member provides low stress on the tread when a slit of the keyhole sipe is pulled around the body member during removal of the tread from a mold.

Abstract: According to embodiments of the present invention, there are provided a mold stack, a molding system incorporating same and a method of aligning the mold stack. For example, a mold stack is provided. The mold stack comprises a first molding cavity defining component, a second molding cavity defining component and a third molding cavity defining component, with the second molding cavity defining component being located, in use, in-between the first molding cavity defining component and the third molding cavity defining component. At least one of the first molding cavity defining component and the third molding cavity defining component is associated with a respective compensator, the respective compensator configured to allow the at least one of the first molding cavity defining component and the third molding cavity defining component to align itself relative to the second molding cavity defining component.

Abstract: Disclosed are a compensating core for use with a molding system and the molding system incorporating same. A core insert for use in a molding system is provided. The core insert comprises a core base for defining, in use, a portion of a molding cavity; a core support for supporting, in use, the core base relative to a core plate of the molding system; a compensator associated, at least partially, with the core support to permit at least a degree of axial movement to the core base.

Abstract: Disclosed are a compensating mold stack, a molding system incorporating same and a method of aligning the compensating mold stack. A mold stack for use in a molding system is provided. The mold stack comprises at least two compensating components.

Abstract: A molding device is provided that includes outer and inner rubber molds that define a space therebetween for forming a column. Inserted within the inner mold is an elongated rigid member. A multisectional housing surrounds the outer mold and includes a plurality of sections that in a molding mode are secured together by fasteners. Once the column has been molded between the outer and inner molds, the fasteners are released allowing the sections of the housing to be relaxed or removed from around the outer mold. This permits the outer mold to expand or move slightly outwardly and in response to that outward movement, the pressure or force on the molded column lying between the outer and inner molds is reduced. This facilitates the extraction of the column from between the outer and inner molds.

Abstract: A void former or dowel sleeve adapted to be encapsulated in a hardened mass of concrete, which is collapsible upon the application of a tensile force longitudinally thereof to remove the void former from the concrete and provide a void for a load transferring dowel.

Abstract: The invention provides a novel thermoplastic molding process useful in the manufacture of hollow, deformable thermoplastic articles such as hollow doll heads. In the process of the instant invention, a parison is formed at a first injection station and is transferred to a blow mold station. At the blow mold station, the parison is transformed into a hollow, deformable thermoplastic article through application of a vacuum and gas injection. Articles made by the process of the instant invention have a highly realistic appearance and texture.

Abstract: A method is provided for fabricating a concrete slab in a substantially horizontal slip casting process method, concrete mix is fed into a mold through a delimited cross section moving progressively in the casting process so as to form a concrete product of a desired shape. Onto the surface of the casting bed (1) is placed a core (3, 9, 10, 11) capable of delimiting the cross section of the concrete product (5, 5?) so as to provide an opening or a provision for an opening in the bottom surface of the slab. A core is provided for obtaining an opening or a provision for an opening. The structure and/or material of the core is/are such that the core is capable of yielding in vertical direction. A core may also be a multipart core, the outer part of which becomes detached from the inner part of the core in conjunction with lifting off the concrete slab from the casting bed.

Abstract: A method and apparatus for forming a member, such as a column. The invention comprises inner and outer molds that are spaced apart forming a cavity for receiving a viscous material for making the member. A core is inserted within the inner area of inner mold when the viscous material is initially disposed within the mold. Once the material attains a gelled state, an extraction member is inserted within the inner area. A vacuum is applied to the inner area that causes the flexible inner mold to separate from the material and conform to the extraction member allowing for removal.

Abstract: A device for producing an opening or cavity in the side of a ceramic product during product molding in a mould with a molding cavity delimited by a molding surface which has a window, comprising a deformable punch, joined on the window, designed to project into or retract from the molding cavity, with the ability to vary its rigidity. The device comprises punch shape variation differential constriction means and actuator means for punch deformation, which together produce a controlled anisotropic punch deformation, which makes the punch project into the molding cavity.

Abstract: An anchor positioning assembly for use in casting a concrete panel. The anchor positioning assembly includes a void former, a cooperating cover and an anchor. The assembly may further include an adaptor insert for receiving anchors of variable shapes and sizes. The void former includes a body having first and second portions pivotally connected by a pair of hinge webs. A peripheral lip extends outwardly from the periphery of the void former. A cover includes a top plate having a reentrant edge defining a locking groove for releasably engaging the peripheral lip of the void former, thereby providing a seal between the void former and the cover. The cover includes a plurality of mounting apertures to facilitate securing of the cover to concrete formwork.

Abstract: A closed end of a one piece flexible elastomeric seal is mounted in one end of a tubular liquid concrete tight frame that is mounted on a removable door of one wall of a concrete wall mold, the other open end of the flexible seal is in liquid concrete tight sealing contact with the other wall of the concrete wall mold.

Abstract: The invention concerns a method for fabricating a concrete slab in a substantially horizontal slip casting process, in which method concrete mix is fed into a mold through a delimited cross section moving progressively in the casting process so as to form a concrete product of a desired shape, characterized in that onto the surface of the casting bed (1) is placed a core (3, 9, 10, 11) capable of delimiting the cross section of the concrete product (5, 5′) so as to provide an opening or a provision for an opening in the bottom surface of the slab. The invention also concerns a core for obtaining an opening or a provision for an opening characterized in that the structure and/or material of the core is/are such that the core is capable of yielding in vertical direction. A core according to the invention may also be a multipart core, the outer part of which becomes detached from the inner part of the core in conjunction with lifting off the concrete slab from the casting bed.

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 method of forming a molded article and a molded article itself having a passage therein which has a cross-sectional dimension adjacent an end which is less than at a location which is spaced from the end are disclosed. In the method an elongate, rigid mandrel is covered over a substantial portion of its length with a flexible mandrel. The flexible mandrel, when covering the rigid mandrel, has an exterior surface which has a cross-sectional dimension which is less adjacent an end thereof than at a location which is spaced from that end. The flexible mandrel is then covered with a material which is to form the molded article with the rigid and flexible mandrels defining the mold about which the article is formed by the material. The material is then set to form the molded article about the mandrels with the mandrels defining the passage in the molded article.

Abstract: An anchor positioning assembly for use in casting a concrete panel. The anchor positioning assembly includes a void former, a cooperating cover and an anchor. The assembly may further include an adaptor insert for receiving anchors of variable shapes and sizes. The void former includes a body having first and second portions pivotally connected by a pair of hinge webs. A peripheral lip extends outwardly from the periphery of the void former. A cover includes a top plate having a reentrant edge defining a locking groove for releasably engaging the peripheral lip of the void former, thereby providing a seal between the void former and the cover. The cover includes a plurality of mounting apertures to facilitate securing of the cover to concrete formwork.

Abstract: An apparatus for supporting a lift member in a concrete mold, comprising a resilient member having a void forming portion and a lift member receptacle for releasably holding a lift member and a mounting plate having a front surface and a rear surface and adapted for receiving said resilient member from said rear surface with said void forming portion extending from said front surface, said mounting plate having mounting structure on said rear surface for mounting to a concrete mold.

Abstract: An insert device for forming voids in concrete for various types of purposes, such as anchoring heavy machinery to a concrete foundation, is disclosed. A method for the use of the insert device is also disclosed.

Abstract: A stop-end pipe is used for formation of joining surfaces between adjacent wall elements made from a concrete casting, of the type consisting of a substantially trapezium-shaped profiled section divided up into at least two wings these wings are resiliently approachable to one another and also have a double internal reinforcing partition able to prevent collapsing as a result of compression. Preferably, the double partition is partially widened out so as to form a guide channel in which a guiding pawl for a working tool is able to slide.

Abstract: A removable anchor positioning insert for forming a recess in a face of a concrete structure and for the simultaneous positioning of an anchor within the recess. The insert includes a resilient body having an upper surface connected to an arcuate lower surface by front and rear surfaces. An anchor placement channel extends within the body intermediate the upper face and the lower surface and includes a channel apex connecting first and second receiving bores. The first and second receiving bores extend in a downward direction from the channel apex toward the lower surface and include front and rear outlets opening adjacent the front and rear surfaces. A slot extends downwardly from the placement channel to the lower surface. The first and second receiving bores include engagement surfaces for engaging outer surfaces of first and second legs of the anchor. The first and second legs of the anchor extend downwardly from an anchor apex.

Abstract: A mandrel of a high frequency heating type, comprising a conductive layer comprising a metal member having an aspect ratio of at least 100, in a proportion of at least 60% by volume, and a surface layer formed thereon which is made from an organic polymer, and a method for producing a rubber hose using the mandrel. Inasmuch as the inventive mandrel enables heating the curable rubber extruded on the mandrel, from the inner surface side thereof, the curing time of the rubber can be drastically reduced. Moreover, since the surface layer of the mandrel is composed of an organic polymer, the mandrel can be easily pulled out from the cured rubber layer. The production method of the present invention is free of the difficulty in heating the inside of the rubber layer. The concurrent application of external heating has accomplished continuous production of rubber hose.

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 method of fabricating a wax casting of a golf club iron head including the steps of providing a wax injection tool having a rear cavity projection; providing a collapsible insert that is shaped to provide a desired undercut peripheral region in the rear cavity of the wax casting; installing the collapsible insert on the periphery of the rear cavity projection of the tool; injecting hot wax into the tool and allowing the wax to harden; then removing the hardened wax and insert from the injection tool; and finally removing the insert as a unitary member from the hardened wax, without requiring any form of breakage of the wax casting or the insert such as by distorting its shape.

Abstract: A removable insert for forming a recess in wet concrete which locates a pulling iron or anchor in wet concrete, and when the concrete hardens the insert is removed, and the anchor may be engaged by a hook and cable to move the resultant concrete structure. The insert, which may be placed at any desired location in the concrete structure, is of a resilient, molded elastomeric material with a central opening to engage the pulling iron or anchor, with a slot therein, which is closed or shaped and which may have a V-shaped removable wedge in the slot. The insert is molded with a flat top with sloping sides, extending downwardly therefrom to a semicircular bottom surface, with threaded inserts in the top which have bolts inserted therein for fastening the insert to a plate and for squeezing to open the slot to permit withdrawal of the insert from the pulling iron or anchor, and which provides a recess, which contains the anchor.

Abstract: The invention provides apparatus for use in connection with the casting of bodies, e.g. of concrete panels, which are to contain within them one or more anchor members which extend towards the surface of the body and are accessible within recesses formed in said surface.

Abstract: A method and mold for making a wheel of a roller skate including a plurality of circumferentially spaced apart generally axially extending curvilinear paths. A speed skater, traveling a predominately circular course with such wheels properly aligned on such skates, is able to use air moving past the skater to increase skating speed. As air enters the curvilinear paths of the wheel the direction of air flow changes. In this manner, momentum is transferred from the moving air to the spinning wheels, thus increasing the number of revolutions of the wheel and the speed of the skater. The mold may be formed of polyurethane and use flexible fingers to form the curvilinear paths of the wheel.

Abstract: A selectively-flexible, selectively-rigid, reusable, one-piece mold is used to fabricate a composite part having a complex shape on an outer surface of the mold. Disposed within the interior of the shell is a grid-type support truss structure having a plurality of individual support members attached at one end to headers that are attached by clips to the inside surface of the shell at predetermined locations. The support members are locked in place relative to each other by the use of pins placed in holes formed at various locations in the support members. When locked in place in this manner, the shell is stiffened, thereby facilitating the fabrication of the composite part on the mold. When the pins are removed, the shell is allowed to flex, thereby facilitating the removal of the cured composite part from the outer surface of 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: Inflatable formwork mould for supporting one or more applications of hardening building materials, applied while still in a plastic state. The formwork mould is characterized in that at least two of its sides (20) consist of elongate, cross-shaped, modular base element (10), each having a longitudinal axis parallel to the one adjacent thereto; each base element (10) is made to conform to the shape of a U-shaped groove (12), and is produced from an airtight, flexible material impermeable to water and assembled by welding, stitching, bonding and the like. A link system (26) joins a number of base elements constituting one side to a corresponding number of base elements opposite forming the opposite side (20). The links (26) of a predefined length, preserve the entire geometrical relationship between the two opposing sides (20) of the inflatable formwork mould. An external envelope optionally made from an extensible material produces a smooth, plane or curved moulding surface.

Abstract: A compressible band and end retainer assembly which secures opposite ends of a band to an intermediate spacer. The band mounts between facing concrete sidewall forms to define a hole, upon pouring and curing a slurry of surrounding concrete. Various band geometries permit hole formation in planar or curvilinear poured walls.