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6485553 |
Filler material and wax composition for use in investment casting
A wax composition for use in investment casting having improved properties includes polyethylene terephthalate as a filler material. The amount of polyethylene terephthalate used in the wax...
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6467526 |
Method of making a jewelry ring in a vertical mold
A method of molding a jewelry ring having a beveled or rounded inner diameter and a hollow portion in a vertical mold comprises utilizing a multi-piece plug and a soluble insert in a mold to define...
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6460594 |
Method of forming a metal statuette of a three-dimensional object
A method of forming a gold statuette of a three-dimensional object, e.g. a man, is disclosed as including the steps of (1) scanning the man with scanning means to obtain data on his contour and...
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RE37854 |
Invisible setting method for jewelry
A rigid bar (or segment) on which stones will be at least partially supported is positioned in a rubber mold for creating a wax pattern of the jewelry, injecting wax to form a wax model of the...
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6446697 |
Rapidly making complex castings
Method of rapidly making casting, comprising: designing a computer graphic model of the casting; sectioning the graphic model into graphic members which are at least one of blocks and slabs;...
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6435256 |
Method for producing a cooled, lost-wax cast part
The invention relates to a method for producing a cooled cast part for a thermal turbo machine by using a known casting process. Between a wax model of the cast part and a ceramic core, a wax seal...
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6435255 |
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...
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6431253 |
Method of recovering and refining filler from a lost wax composition
When a waste wax composition containing a filler is treated so that the filler is recovered and thus reclaimed, almost all the impurities coming from the lost wax casting mold may be removed,...
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6427759 |
Investment cast stainless steel marine propeller
An investment cast stainless steel article, such as a marine propeller, is composed of a stainless steel alloy containing from 14.5 to 15.2% chromium, 5.35% to 6.05% nickel and 1.0% to 1.5%...
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6364001 |
Method of casting an article
An article, such as an airfoil, is cast by a lost wax investment casting process. The process includes providing a core having a configuration corresponding to the configuration of a space to be...
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6330904 |
Microwave-based process for dental casting
A microwave-based process for dental casting includes the use of microwave radiation to obtain burnout of a wax pattern from an investment mold. Phosphate-based, thermal investment materials have...
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6298904 |
Vent-forming apparatus for metal casting and method
A vent-forming apparatus for use in metal casting comprises a gas-permeable membrane with a lead-in tube attached to one surface and a breather tube attached to the opposite surface. The...
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6283194 |
Process for producing structural elements
A process for producing structural elements, preferably prototypes, in which a "lost" model, i.e., positive model, of the structural element is produced in a first step and the model is...
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6209621 |
Implantable prostheses with metallic porous bead preforms applied during casting and method of forming the same
An implantable prosthesis having porous textured surface regions and methods for making the same provide improved prostheses and prosthesis manufacturing methods. The implantable prostheses contain...
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6155330 |
Method of spray forming metal deposits using a metallic spray forming pattern
A spray forming pattern of a first metal having a melting point at a first temperature is formed. The spray forming pattern has a surface defining a cavity that has the shape of a master pattern....
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6129138 |
Method of making a ceramic shell mould and a method of casting
A wax pattern assembly (10) is removed from a ceramic shell mould (30) by removing a support member (20) from the wax pattern assembly (10). The ceramic shell mould (30) is then heated to melt the...
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6123141 |
Method of forming a wax replica
A process for fabricating a hollow or partially hollow article, such as a jewelry ring, comprises producing a first mold having an inner cavity shaped in accordance with the external shape of the...
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6119763 |
Method for preparing golf ball mold
A golf ball mold is prepared by inserting a dimpled hemispherical male die into a chamber in a frame, admitting hot liquid wax into the chamber, cooling and curing the wax to form a wax shape,...
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6119761 |
Method for making a hollow cast article by the lost wax method
A method to suppress displacement of the core during casting when making hollow blades by applying the lost wax method using a core. A wax pattern is made which comprises a core and a layer of wax...
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6109333 |
Method of manufacturing electric motor housing frame and foam pattern therefor
Housing frames for use in electromechanical machines may be advantageously produced using a novel pattern form in a lost foam casting process. The pattern form is made from a cast dissolvable...
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6050325 |
Method of casting a thin wall
An article has a thin wall portion with a thickness of 0.060 inches or less, a width of at least four inches, and a height of at least six inches. In order to cast the article, a pattern having a...
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6032719 |
Method for producing hollow jewelry ring
A process for fabricating a hollow or partially hollow article, such as a jewelry ring, comprises producing a first mold having an inner cavity shaped in accordance with the external shape of the...
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6019927 |
Method of casting a complex metal part
A flexible and resilient positive pattern is made for a desired high temperature metal or ceramic part such as a gas turbine impeller having a complex geometry with walls defining undercut spaces,...
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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...
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5950703 |
Molding method using wax-like substance
A wax-like substance mainly consisting of a saturated chain hydrocarbon, in which a weight ratio (C/H) of carbon and hydrogen is 5.839-6.018, a total weight % of the carbon and the hydrogen is...
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5950705 |
Method for casting and controlling wall thickness
A method for casting a turbine bucket with at least one surface cooling hole. The method comprises positioning at least one preformed spacer device on a core, where the preformed spacer device is...
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5927379 |
Infiltration method for producing shells useful for investment casting
Methods and compositions for forming shells for investment casting and methods for casting metal articles using the shells are described. One embodiment of the method comprises serially immersing a...
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5921309 |
Production process of wax pattern
A production process of a wax pattern having a core, which is used for casting a product having a complicated hollow portion, comprising the steps of: producing two or more wax shells each having a...
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5909765 |
Method of producing investment castings for stereolithography patterns
An investment casting shell is made by providing an investment casting pattern that defines a cavity and filling the cavity with a fluid. The fluid is sealed within the cavity and a ceramic...
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5896663 |
Process for making jewelry utilizing a soft photopolymer
The instant invention contemplates a process for manufacturing jewelry including the steps of: (a) creating a photographic negative from a computer-generated image; (b) exposing the back side of a...
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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...
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5893204 |
Production process for casting steel-bodied bits
Steel bit bodies are manufactured in a production process that employs polystyrene patterns in a lost foam casting process. The patterns are machined to permit the formation of complex shapes that...
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5881795 |
Method of casting metal around gems to form articles of jewelry
A method of manufacturing gem decorated articles, typically jewelry, includes the steps of: using a first mold which has a mold cavity with one or more gem portions for receiving one or more gems...
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5868192 |
Method of casting bangle parts
The investment casting method uses the lost wax method and involves using a model to form a wax piece in the desired shape such as the shape of the snap element or the shape of two hinge halves,...
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5853044 |
Method of casting an article
A wax article pattern having a cavity corresponding to a cavity in a metal article is provided. The cavity in the wax article pattern is filled with a slurry of ceramic core material. The slurry of...
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5791395 |
One shot multi-color metal casting method
Method of multi-color jewelry items production is based on a simultaneous casting of two metal alloys of different colors (yellow-red, white-yellow, etc.), as well as two different metals, with a...
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5762125 |
Custom bioimplantable article
A method of making a custom, bioimplantable article, such as a joint prosthesis component, is provided using computer aided design, rapid prototyping, and investment casting techniques. The method...
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5718278 |
Method for producing hollow ring having inner round radius design
A process for fabricating a hollow or partially hollow article, such as a jewelry ring, comprises producing a first mold having an inner cavity shaped in accordance with the external shape of the...
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5685356 |
Method of making dental wax pattern
A method of making a wax pattern by using a dental gypsum model is provided, which comprises the steps of applying a release agent on said gypsum model, coating on the thus applied surface a...
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5678624 |
Investment casting process
An investment casting process which includes: attaching a gate to a pattern made of a plastic to form a pattern assembly; forming a mold by applying a plaster slurry on an outer surface of the...
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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...
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5594989 |
Process for making jewelry utilizing a hard photopolymer
The instant invention contemplates a process for manufacturing jewelry including the steps of: (a) creating a photographic negative from a computer-generated image; (b) masking the negative over a...
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5551503 |
Process for the production of decorative articles in gold or other precious metals and the articles made by the process
The process consists of starting from a lace or embroidery in cotton or synthetic fibers, applying to the model wax, resins or varnishes capable of increasing the size, then coating the model with...
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5535810 |
Cast orthopaedic implant and method of making same
A method of forming a cast orthopaedic implant having a porous surface layer is disclosed. The method includes placing a porous layer on a wax replica of the implant such that a portion of the...
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5524697 |
Method and apparatus for single die composite production
A method for producing composite materials by forming one material in a die cavity such that another material can be forced into the same die cavity and infiltrate the spaces in the first material....
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5503218 |
Method of making a shell mould from a ceramic material for a disposable pattern casting process
A method of making a ceramic shell mould for casting includes making a pattern having an internal cavity in two parts from a disposable material, glueing the two parts together to complete the...
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5468170 |
Collector's model disintegrator pistol (CMDF)
In the present invention, a Collector's Model Disintegrator Pistol (CMDP) is formed from a pair of fight side and left side metal castings according to the investment or "lost wax" casting process....
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5460217 |
Apparatus and method for wax tree coating and product manufacturing method using the apparatus and method
An apparatus and a method for manufacturing cast parts by means of a lost wax process which is fully automated and unmanned. The wax tree coating processes, ranging from after a wax tree...
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5372177 |
Method and apparatus for removing wax from casting mold
A method and an apparatus are provided which allows the safe and inexpensive extinguishing and cooling of flaming wax emanating from an investment casting flash fire dewaxing furnace. Investment...
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5368086 |
Method for making a ceramic mold
A new method for producing a composite ceramic mold for production of metal castings is disclosed. The composite mold is comprised of a backing layer and a facing layer. The backing layer is formed...
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