Did You Know...
...that in the early 1940s GE engineer James Wright was charged with a task of utmost importance to the war effort: develop a cheap substitute for rubber that could be used to produce tires, gas masks and a whole host of military gear. Wright tackled the task diligently -- and wound up inventing Silly Putty.
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| Number | Title | Issue Date |
| 7318468 | Glued lost foam casting pattern assembly Lost foam pattern assemblies formed by gluing together a plurality of EPS foam pattern segments with a polystyrene-like glue comprising an aromatic resin that has a molecular weight less than 10,000 and thermally degrades at temperatures no greater than said EPS. Th... | 01/15/2008 |
| 7270166 | Fugitive pattern assembly and method A fugitive pattern assembly is made by preforming one or more fugitive patterns of an article to be cast, placing the preformed patterns in an injection die, and injecting fluid gating material into the die to form gating connected to the patterns. The fugitive patt... | 09/18/2007 |
| 7252136 | Numbering device for molded or cast parts A numbering device is disclosed for marking molded cast parts, the device including a plurality of concentric cylinders having indicia disposed on an end thereof, the cylinders being rotatingly indexable to cause the indicia to move as desired to form the desired ma... | 08/07/2007 |
| 7244211 | Differential and method of assembly thereof A differential including axle pinions and pinion gears and a body having two parts between which the pinions are mounted. The two parts of the body are provided with complementary guiding surfaces for guiding the two parts in adjustment relative to one another along... | 07/17/2007 |
| 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 |
| 7025109 | Method and apparatus for controlling dispersion of molten metal in a mold cavity A method and apparatus for controlling the dispersion of molten metal in a mold cavity is disclosed, the control facilitated by a localized densification of foam in a lost foam casting operation for producing metal castings, wherein the filling of regions of the mol... | 04/11/2006 |
| 7001546 | Method for thermostatically controlling mold temperatures A method and apparatus for thermostatically controlling mold temperatures. The molding apparatus includes at least two die sections and a thermostatic control valve. At least one of the die sections has a cooling channel extending through portions of the die section... | 02/21/2006 |
| 6971437 | Lost foam casting pattern Pattern for the lost foam casting process including a pouring-basin-foming portion, a sprue-forming portion, a runner-forming portion, a gate-forming portion, and a riser-forming portion. The sprue-forming portion forms an inverted conical sprue having a blade-light... | 12/06/2005 |
| 6938966 | Cabinet connector A connector for interconnecting vertical panels of adjacent cabinets comprises male and female connector elements releasably mounted in opposed openings in the sidewalls of adjoining cabinet modules. Each connector element comprises a body that is shaped to fit into... | 09/06/2005 |
| 6929050 | Wax runners for casting A wax runner is provided having risers along the edge of the surface which is melted to attach the wax gates of wax patterns to the wax runner. The risers prevent the flow of molten wax over the edge of the wax runner. In addition to the risers or separately, at lea... | 08/16/2005 |
| 6883580 | Apparatus and improved method for lost foam casting of metal articles using external pressure An apparatus and method to delay the application of pressure on a molten metal front to equalize a pressure gradient present at the molten metal front during pressurized lost foam casting processes, or other pressurized casting processes. A pressure equalization mem... | 04/26/2005 |
| 6789604 | Fugitive patterns for investment casting A fugitive pattern of an article to be investment cast wherein the pattern includes a plurality of locator embossments disposed in an array to provide a datum reference system by which the pattern can be held and positioned by a manipulator, such as for example a gr... | 09/14/2004 |
| 6719036 | Fugitive patterns for investment casting A fugitive pattern of an article to be investment cast wherein the pattern includes a plurality of locator embossments disposed in an array to provide a datum reference system by which the pattern can be held and positioned by a manipulator, such as for example a gr... | 04/13/2004 |
| 6715536 | Full mold casting process and device for a differential case A full mold casting process in which a complete, positive model made of a thermally decomposable material is placed in a molding box and filled with sand; the sand is hardened by shaking. Casting metal is poured on the thermally decomposable model and the model is d... | 04/06/2004 |
| 6675868 | Apparatus for performing foundry work A machine for forming and fitting core support pins into wax (70) surrounding a core (68) prior to covering the wax (70) with a frit (76), includes one or more punch devices (30), (82) within its structure, so as to enable the forming of one or more inden... | 01/13/2004 |
| 6648056 | Fingerprint jewelry A fingerprint jewelry includes any jewelry with a person's fingerprints cast in relief onto its surface. It is made by pressing a finger on a sheet of pliable wax medium to imprint it with fingerprints in relief. In a first embodiment, the wax medium is c... | 11/18/2003 |
| 6481490 | Investment casting patterns and method Method of making a shell mold for casting molten metals or alloys involves forming a thermally collapsible, low density reaction injection molded (RIM) thermosetting polyurethane foam pattern having a shape corresponding to the casting to be made. The pat... | 11/19/2002 |
| 6467530 | Apparatus for forming a pour hole and main sprue in an investment mold for lost wax casting Apparatus for forming a pour hole and main sprue in an investment mold for lost wax casting. A sprue having a flared base, a base member adapted to receive the flared base of the sprue for vertically supporting the sprue, and a flask for containing invest... | 10/22/2002 |
| 6415847 | Crankshaft casting pattern and method A crankshaft casting pattern insert 10 which includes selectively adjustable portions 14, 16, which respectively correspond the front and rear main bearing journal portions of the crankshaft. Each adjustable portion 14, 16 includes a removable insert or m... | 07/09/2002 |
| 6382300 | Casting having an enhanced heat transfer, surface, and mold and pattern for forming same A casting includes a heat transfer surface having a plurality of cavities. The plurality of cavities include a density of at least about 25 cavities per square centimeter to about 1,100 cavities per square centimeter resulting in increased surface area an... | 05/07/2002 |
| 6349758 | Apparatus for forming a pour hole and main sprue in an investment mold for lost wax casting Apparatus for forming a pour hole and main sprue in an investment mold for lost wax casting. A sprue having a flared base, a base member adapted to receive the flared base of the sprue for vertically supporting the sprue, and a flask for containing invest... | 02/26/2002 |
| 6189598 | Lost foam casting without fold defects Fold defects are reduced or eliminated in lost foam castings by contacting a destructible polymeric pattern surface proximate to which deleterious fold defects comprising unbonded seams are prone to form in the solidifying molten metal with a material tha... | 02/20/2001 |
| 6006818 | Expanded or expansible plastic material for the fabrication of sunk foundry models and sunk models comprised of such material The models comprise an expanded or expansible polymer or copolymer generally used for the fabrication of such models. The polymer or copolymer contains an oxidizing agent comprising a nitroaliphatic compound that accepts expansion without substantial alte... | 12/28/1999 |
| 5983982 | Investment casting with improved as-cast surface finish The pattern material with substantially spherical filler particulates is used to produce investment cast components with improved surface quality, reduced finishing costs, and reduced core breakage. The pattern material comprises substantially spherical p... | 11/16/1999 |
| 5979537 | Wax replica and soluble core insert used for producing hollow jewelry ring A soluble wax core insert to be used in making a wax replica of a hollow metal jewelry ring has an inner round radius design and an arcuate portion having an arcuate extent of at least 140°. The soluble wax core insert is formed by molding in a metal mol... | 11/09/1999 |
| 5960851 | Method of lost foam casting of aluminum-silicon alloys An improved method of lost foam casting of aluminum silicon alloys utilizing a pattern formed of an expandable polymeric foam having a decomposition temperature less than 300° C., and a heat of decomposition less than 600 Joules per gram. The foam patter... | 10/05/1999 |
| 5884686 | Cast nodes and patterns for their production A pattern from which cast nodes can be produced, the pattern including a central ring or disc against which one or more stubs abut at selected stations to enable nodes of differing annular geometries and/or stub diameter to be produced from the same patte... | 03/23/1999 |
| 5857512 | Jewelry models and an improved jewelry model produced therefrom A nail polish or nail polish/enamel composition is applied to imperfections, errors, distortions or porosities in the model. The composition is thus used to correct the model's shape. The composition can be added at room temperature, and avoids the need t... | 01/12/1999 |
| 5749411 | Spruing assembly A spruing assembly for receiving investment material in the production of an investment mold for castings by the "lost wax" process which includes a hollow chamber to receive the investment material. Included within the chamber is one or more sprue for su... | 05/12/1998 |
| 5651408 | Investment casting gating for metal wood golf club heads A wax pattern for use in connection with investment casting of a metal wood golf club head, in which the golf club head is a positive duplicate of the wax pattern. The wax pattern includes a body having a hollow interior accessible through an orifice and ... | 07/29/1997 |
| 5595235 | Outboard motor exhaust housing and lost foam pattern therefor Disclosed herein is a one piece drive shaft housing comprising a casting including an outer surface having an upper end surface, a lower end surface, and an endless side surface extending between the upper and lower end surfaces, an internal cavity extend... | 01/21/1997 |
| 5404930 | Method and apparatus for casting an airfoil An improved mold for use in casting a metal airfoil has an airfoil mold cavity and a starter chamber. A lower end of the starter chamber is formed by a chill plate. A filter is disposed in the starter chamber between the airfoil mold cavity and the chill ... | 04/11/1995 |
| 5350002 | Assembly and method for making a pattern of a hollow component An assembly for making a wax pattern of a hollow component includes a pattern die and a noncircular core which is located within the pattern die. The pattern die is a split die and includes two halves which have shaped internal surfaces to define the exte... | 09/27/1994 |
| 5143143 | Multipiece foam pattern for making hollow casting having an integral hose connection A cast tubular structure including an integral hose connection element formed thereon is produced by lost foam casting wherein a circular socket seat is formed on a pattern for a body portion of the cast tubular structure and a cylindrical pattern for the... | 09/01/1992 |
| 5121787 | Evaporable foam pattern for casting a thermostat housing for a V-type marine engine The pattern, composed of a polymeric material, is formed of three sections joined together by an adhesive along a pair of parallel parting lines. One parting line lies in a plane extending through the axis of an outlet to the engine block and through the ... | 06/16/1992 |
| 5111869 | Evaporable foam pattern for casting a cylinder block of a two-cycle engine An evaporable foam pattern for casting the engine block of a two-cycle engine. The pattern has a crankcase end and a head end and a plurality of cylinders extend from the crankcase end toward the head end. A plurality of transfer passages are disposed lon... | 05/12/1992 |
| 5070929 | Pattern for castings and the castings produced therefrom The present invention relates to a pattern for castings and the castings produced from the pattern. The pattern comprises a pattern plate including a parting plane, at least one multistage draft and at least one substantial draft extending from the partin... | 12/10/1991 |
| 4987945 | Evaporable foam pattern assembly for casting a centrifugal pump housing An evaporable foam pattern assembly for casting a centrifugal pump housing for an internal combustion engine. The assembly comprises three pattern sections having abutting surfaces joined by adhesives along a pair of parting lines. The parting lines are p... | 01/29/1991 |
| 4977945 | Full mold comprised of a plastic foam material A full mold for casting contains a plastic foam material lost pattern. The plastic foam material is substantially sulfur-free and can advantageously be used to provide iron alloy-based full-mold cast pieces of high quality.... | 12/18/1990 |
