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| Number | Title | Issue Date |
| 7407145 | Core for molding hollow ceramic molded body and light emitting container A slurry for molding an article is provided wherein a source powder including at least one of a ceramic powder and a metal powder is dispersed, introduced into a forming mold, cured in the forming mold to form the molded article, and at least a part of the forming m... | 08/05/2008 |
| 7147198 | Wax pattern for making a golf club head A wax pattern for use in making a golf club head has a shell wall which defines a hollow region and which includes a front portion, a rear displacement portion and a dividing line extending between the front and rear displacement portions. The wax pattern has a prof... | 12/12/2006 |
| 7118085 | Retort system A method for producing dental restoration components includes filling a retort cylinder of a retort system with a forming mass, the retort cylinder being at least partially encircled by a charging body, and hardening the forming mass. After the hardening of the form... | 10/10/2006 |
| 6516866 | Method of simultaneously molding a meltable core and an overmold assembly A simplified lost-core molding system that combines otherwise redundant features such as platens and hydraulic cylinders ordinarily found in separate core molding stations and product molding stations. The preferred system locates the core mold and the pr... | 02/11/2003 |
| 6279867 | Multi-part form of a mold for forming a containment member for molten metal 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 ex... | 08/28/2001 |
| 6089307 | Assembly for casting The casting assembly includes a horseshoe shaped casting ring having a plurality of handling posts; a horseshoe shaped crucible former having a flange for retaining the casting ring and a top surface for supporting the casting ring; and a pair of tongs ha... | 07/18/2000 |
| 6036470 | Mandrel for producing composite tubular parts A mandrel is fitted with a molded sleeve of low-temperature alloy for forming a rigid bulge along the surface of the mandrel. The sleeve is shaped to define the. internal surface of the shell at the bulge. After the mandrel has been so modified with the l... | 03/14/2000 |
| 5893405 | Triangular spoke sprue A mold assembly and sprue configuration for dental investment casting includes a ring shaped casing, a base and a cover all made of resilient plastic material and fictionally engaged with each other. The base includes a raised neck having a top surface wi... | 04/13/1999 |
| 5839499 | One-shot multi-color gold casting apparatus and casting tree The apparatus includes a rubber base with two inlets, a two-chamber ceramic crucible with two identical outlets, and a model of the jewelry item with two sprues connected to two separate tree stems, with each sprue connected to a separate stem thus ensuri... | 11/24/1998 |
| 5816009 | Stress steering structure A load bearing structure having a set of uniform voids functions to resolve the forces imposed by developing compression in the material having the voids and minimizing the amount of tension developed in the material. The voids are deployed to encompass a... | 10/06/1998 |
| 5702628 | Method of fabricating article by using non-sand core and article produced thereby, and core structure A casting is produced using a non-sand plastic core. The plastic core is made of a thermoplastic resin and set in a casting mold so as to form a cavity in the casting mold. A molten metal such as aluminum is poured under pressure into the cavity to form t... | 12/30/1997 |
| 5688533 | Round ringless mold and triangular spoke sprue A mold assembly and sprue configuration for dental investment casting includes a ring shaped casing, a base and a cover all made of resilient plastic material and fictionally engaged with each other. The base includes a raised neck having a top surface wi... | 11/18/1997 |
| 5667191 | Method of fabricating article by using non-sand core and article produced thereby, and core structure A casting is produced using a non-sand plastic core. The plastic core is made of a thermoplastic resin and set in a casting mold so as to form a cavity in the casting mold. A molten metal such as aluminum is poured under pressure into the cavity to form t... | 09/16/1997 |
| 5655592 | Method and device for eliminating compression and distortion of wax patterns in lost-wax casting Compression and distortion on a wax pattern during curing are eliminated by employing a thermochromatic dye which changes color when investment material sets. By monitoring the dye, the set investment material can be removed from the assembly before curin... | 08/12/1997 |
| 5615528 | Stress steering structure A load bearing structure having a set of uniform voids functions to resolve the forces imposed by developing compression in the material having the voids and minimizing the amount of tension developed in the material. For the voids to have this function, ... | 04/01/1997 |
| 5591466 | Apparatus for making multi-segment plastic components 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 eleme... | 01/07/1997 |
| 5511762 | Consumable form with degradable lining A method of manufacturing an open top, walled member for containing a molten metal, including the steps of forming an inner wall of a mold with a metal sheet and an inner lining covering the sheet, wherein the inner wall defines an inside surface of the w... | 04/30/1996 |
| 5505893 | Method for manufacturing and repairing molten metal containment vessels A method of manufacturing an open top, walled member for containing a molten metal, especially a flowing molten metal or reconstructing a worn or damaged member. The method includes the step of forming the inner walls of a mold which define the inner surf... | 04/09/1996 |
| 5482248 | Mold for manufacturing metal containment vessels A mold for forming an open top, walled member having side walls and a bottom surface for containing a molten metal. The mold including an inner screen having a plurality of openings having inner side walls and a bottom surface. The mold further includes a... | 01/09/1996 |
| 5435960 | Method of making multi-segment plastic components 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 eleme... | 07/25/1995 |
| 5415373 | Hollow melt core having an opening and cover which seals the opening A melt core constructed of a low temperature melting point alloy for producing a cavity in a structural part manufactured by injection molding, the melt core being formed as a hollow body. Depending upon the production process employed, the hollow body is... | 05/16/1995 |
| 5248552 | Molding core A method of removing a core from a molded product in which the core is formed of a particulate inert material, such as sand, bound together by a cured binder of a water soluble carbohydrate alone or mixed with a silicate is disclosed. The silicate is pref... | 09/28/1993 |
| 5176866 | Process for producing a resin product having a bent hollow portion and a core usable for the same process A core for producing a molded resin product having a bent hollow portion, including two-forked and multi-forked products used as parts for automobiles, and a process for producing the aforesaid resin product having a bent hollow portion by using said core... | 01/05/1993 |
| 5173237 | Method of making a metallic core assembly A multiple metallic core assembly for use in production of a plastic injection-molded component is formed by injecting molten metal alloy into a core die at a fill stage of an indexing system, indexing the core die through a cooling stage to an unloading ... | 12/22/1992 |
| 5085569 | Device for recovering, by melting, the metal constituting a fusible core The device which is used for recovering a fusible core employed for moulding a hollow plastic article includes a bath of a liquid heated to a temperature at least equal to the melting temperature of the metal constituting the fusible core, a handling mech... | 02/04/1992 |
| 5061162 | Flux control for induction heating of melt-out cores An induction heating system for melting metal cores contained within articles or components made of plastic uses induction heating and redirects flux lines for efficient melting. The system includes a high permeability magnetic core, an induction heating ... | 10/29/1991 |
| 5035847 | Mold for slip casting A mold for slip casting comprising a compact formed out of a mixture having an organic matter and powders, the organic matter being capable of being extracted by supercritical fluid and the powders being incapable of being extracted by the supercritical f... | 07/30/1991 |
| 5004037 | Long span sprue tube for investment casting The tube is at least two inches long and has successive sections of progressively smaller diameters to produce a correspondingly shaped sprue passage communicating with a pattern cavity in a casting investment, so that fluid casting material passes with i... | 04/02/1991 |
| 4962909 | Mold for dentistry A casting mold for the production of muffles which serve for the conversion of wax models to metal, with the casting mold having a funnel shaper (1) which consists of a disk-shaped base plate (4), at the circumference of which a side wall (5) which stands... | 10/16/1990 |
| 4881713 | Preformed pattern for producing occlusal splints A preformed pattern for forming an occlusal splint comprises a U-shaped member composed of material that is form-stable at room temperature and sufficiently pliable at an elevated temperature to be conformed to the bits of a person's jaw or to a model of ... | 11/21/1989 |
| 4844144 | Investment casting utilizing patterns produced by stereolithography A method of investment casting utilizes a pattern produced by stereolithography in which a three-dimensional specimen is provided by light cure of ethylenically unsaturated liquid material. The stereolithography composition is constituted by the ethylenic... | 07/04/1989 |
| 4842243 | Method and apparatus for molding golf club heads Apparatus for molding hollow metalwood golf club heads of wax or other material with variations in the lie angle of the neck or hosel relative to the body of the club head, in which two molds with communicating mold cavities are supported for turning of o... | 06/27/1989 |
| 4825934 | Cushioning sheet for use in denture casting A cushioning sheet made of a flammable material for use, e.g. in denture casting. It is inserted into a casting frame and adapted to burn out when heated to leave a space between a casting frame and a casting mold in the frame. The space serves to absorb ... | 05/02/1989 |
| 4777996 | Self-sealing plastic base and a cylindrical flask for lost wax process A plastic base for use with a cylindrical flask for the elimination of wax patterns prepared for making metal castings by the lost wax process is identified. The base is made of a plastic material which is used in place of conventionally found rubber base... | 10/18/1988 |
| 4741378 | Sprue pin for producing castings An improved sprue pin for producing castings by the lost wax method wherein the sprue pin gradually decreases in external circumference toward the tip of the sprue. The length and gauge of the sprue is such that it provides acceptable flow rates and solid... | 05/03/1988 |
| 4726561 | Concrete insert apparatus A concrete insert apparatus comprising an insert adapted to be embedded in concrete and having therein an internally threaded bore, a nail including a head end received in the bore and a pointed end extending outwardly of the bore, and wax surrounding the... | 02/23/1988 |
| 4695343 | Method of reinforcing a structural member Method and apparatus is provided for reinforcing a structural member of a vehicle body by the use of adhesively bonded together glass macrospheres of 3 to 9 mm. in diameter. The adhesive is not more than about 40% by weight of the mixture so that voids re... | 09/22/1987 |
| 4687178 | Wax ring tube with graduations A wax ring tube used in manufacture of a ring-like ornament by casting it using a lost-wax process. Plotting graduations are formed on inner peripheral wall surface of a hole bored along the lengthwise direction of a wax ring tube body.... | 08/18/1987 |
| 4682644 | Mold for use in dental precision casting In casting metals for dental prosthetic use, superior dental castings free from shrinkage cavities can be obtained by delaying the cooling and solidification of molten metal in mold members such as a sprue, runner and gate and, if necessary, a molten meta... | 07/28/1987 |
| 4681724 | Removable irreversibly shrinking male mandrel A shrinkable foam mandrel that can be easily removed and composite resin transfer molding process that uses the foam mandrel. The foam is dimensionally stable at a first temperature that typically corresponds to the cure temperature of the composite resin... | 07/21/1987 |
