181 |
AGGREGATE-BASED MANDRELS FOR COMPOSITE PART PRODUCTION AND COMPOSITE PART PRODUCTION METHODS |
US13197635 |
2011-08-03 |
US20110304067A1 |
2011-12-15 |
Jens Rossfeldt; Matt Wallen |
A method for forming a composite structure, using a mandrel that is later removed from the composite structure, involves production of a mandrel by depositing a particulate mixture, including an aggregate and a binder, into a mold and removing the mandrel from the mold. The mandrel may be treated while still in the mold by heating, curing with an agent, microwave energy, or by some combination thereof. Once finished, the mandrel can be used in manufacturing polymer and/or composite components. The mandrel can also include materials that can be easily removed from the finished composite structure by water, shakeout, chemically dissolving, or by some combination thereof. |
182 |
CURABLE POLYMER MIXTURES |
US13057883 |
2009-08-19 |
US20110190420A1 |
2011-08-04 |
René Nagelsdiek; Bernd Göbelt; Wolfgang Pritschins; Dorothée Greefrath; Stephan Remme; Andrea Esser |
Curable polymer mixtures comprising at least one oligomeric addition product with hydrolyzable silane groups and additional functional groups as the mediator additive, and a curable polymer system having epoxy group-carrying polymers and curing agents, fillers and optionally addditives; polymer concrete mixtures and molded bodies produced therefrom |
183 |
CEMENT-BASED MATERIALS SYSTEM FOR PRODUCING FERROUS CASTINGS USING A THREE-DIMENSIONAL PRINTER |
US12688054 |
2010-01-15 |
US20110177188A1 |
2011-07-21 |
James F. Bredt; Michael J. Tarkanian; Mahati Chintapalli |
Mixture for use in a three-dimensional printer to make molds suitable for producing ferrous coatings. The mixture includes cement, sand and accelerator. Grain sizes of the cement, sand and accelerator are selected to assure that the three-dimensional printer generates coherent layers. |
184 |
Reinforced Resin-Derived Carbon Foam |
US12796526 |
2010-06-08 |
US20100308280A1 |
2010-12-09 |
Douglas J. Miller; Irwin C. Lewis; Richard L. Shao; Mehmet Suha Yazici |
A reinforced carbon foam material is formed from carbon fibers incorporated within a carbon foam's structure. First, carbon fiber bundles are combined with a liquid resol resin. The carbon fiber bundles separate into individual carbon fiber filaments and disperse throughout the liquid resol resin. Second, the carbon fiber resin mixture is foamed thus fixing the carbon fibers in a permanent spatial arrangement within the phenolic foam. The foam is then carbonized to create a carbon fiber reinforced foam with improved graphitic characteristics as well as increased strength. Optionally, various additives can be introduced simultaneously with the addition of the carbon fiber bundles into the liquid resol, which can improve the graphitic nature of the final carbon foam material and/or increase the foam's resistance to oxidation. |
185 |
Method of Fabricating Three Dimensional Printed Part |
US12793868 |
2010-06-04 |
US20100237531A1 |
2010-09-23 |
Brett I. Lyons; Jens Rossfeldt; Matt Wallen |
A method of fabricating a three-dimensional printed part includes injecting a powder layer with an aqueous solution and curing the powder layer by depositing an acid gas on the powder layer to form a rigid structure. |
186 |
Castable mass reduced machinable mold material |
US11974776 |
2007-10-16 |
US07767014B2 |
2010-08-03 |
Eric B. Strauss |
A mold material castable to provide a mass reduced work piece machinable to produced a mold and methods of utilizing such mold material to cast mass reduced work pieces machinable to produce a mold. |
187 |
Reinforced resin-derived carbon foam |
US11321739 |
2005-12-29 |
US07758779B2 |
2010-07-20 |
Douglas J. Miller; Irwin C. Lewis; Richard L. Shao; Mehmet Suha Yazici |
A reinforced carbon foam material is formed from carbon fibers incorporated within a carbon foam's structure. First, carbon fiber bundles are combined with a liquid resol resin. The carbon fiber bundles separate into individual carbon fiber filaments and disperse throughout the liquid resol resin. Second, the carbon fiber resin mixture is foamed thus fixing the carbon fibers in a permanent spatial arrangement within the phenolic foam. The foam is then carbonized to create a carbon fiber reinforced foam with improved graphitic characteristics as well as increased strength. Optionally, various additives can be introduced simultaneously with the addition of the carbon fiber bundles into the liquid resol, which can improve the graphitic nature of the final carbon foam material and/or increase the foam's resistance to oxidation. |
188 |
Use of new fast-setting mortars for preparing products by means of pouring in foundry earth moulds |
US10589156 |
2005-02-08 |
US07641732B2 |
2010-01-05 |
Umberto Costa; Roberto Cucitore |
Described herein is the use of new cementitious mortars with a high degree of fluidity and short consolidation times in the production of cementitious products by means of pouring in foundry moulds. The mortars used contain water, a fast-setting cement, fluidifiers and/or superfluidifiers, setting regulators, and aggregates having a specific granulometric distribution. The aggregates are made up of two fractions with different grain size such that the ratio between the characteristic grain diameters of the two fractions is comprised between 2.2 and 3.2. The new mortars thus obtained have values of fluidity 2-3 times higher than those of mortars produced with traditional aggregates. The mortars thus produced are particularly suitable for filling, in a homogeneous way and without any application of vibration, foundry earth moulds; solidification in the moulds takes place in a short time and leads to the formation of products, including ones of a complex shape, with precise outlines and having good mechanical characteristics. |
189 |
AGGREGATE-BASED MANDRELS FOR COMPOSITE PART PRODUCTION AND COMPOSITE PART PRODUCTION METHODS |
US12170297 |
2008-07-09 |
US20090014919A1 |
2009-01-15 |
Jens Rossfeldt; Matt Wallen |
A method for forming a composite structure, using a mandrel that is later removed from the composite structure, involves production of a mandrel by depositing a particulate mixture, including an aggregate and a binder, into a mold and removing the mandrel from the mold. The mandrel may be treated while still in the mold by heating, curing with an agent, microwave energy, or by some combination thereof. Once finished, the mandrel can be used in manufacturing polymer and/or composite components. The mandrel can also be include materials that can be easily removed from the finished composite structure by water, shakeout, chemically dissolving, or by some combination thereof. |
190 |
Luneberg Dielectric Lens and Method of Producing Same |
US11662262 |
2005-09-08 |
US20080191952A1 |
2008-08-14 |
Hisao Tokoro; Kazutoshi Sasaki; Mitsuru Shinohara; Masakazu Sakaguchi; Masatoshi Kuroda; Koichi Kimura; Yoshiyuki Ishibashi |
A hemispherical Luneberg dielectric lens including a hemispherical center layer having a hemispherical outer surface, and a plurality of hemispherical dome-shaped layers each having concentric hemispherical inner and outer surfaces, the outer surfaces of the center layer and dome-shaped layers having different diameters and the inner surfaces of said dome-shaped layers having different diameters. The center layer and dome-shaped layers are successively concentrically fitted into one another and integrated into a hemispherical shape. The center layer is a foam molding of ceramic-containing thermoplastic resin expanded beads, while each of said dome-shaped layers is a foam molding of thermoplastic resin expanded beads containing 0 to 80% by weight of a ceramic. The ceramic content per unit volume of the center and dome-shaped layers decreases from the center layer to the outermost dome-shaped layer, and the standard deviation of the apparent density of each of the center and dome-shaped layers is 0.07 g/cm3 or lower |
191 |
Method for producing composite objects using expanded graphite and vermiculite |
US10574803 |
2004-10-08 |
US20070015267A1 |
2007-01-18 |
Serge Da Silva; Pierre Gros; Cedric Leguen; Jacques Prosdocimi; Sylvain Puybouffat |
A method for producing a composite object includes at least two distinct parts having different properties and/or functions, which includes forming at least one layer (53) having more than 70 wt. % of an expanded material selected from expanded graphites, forming at least one other layer (52) and more than 70 wt. % of another expanded material selected from expanded vermiculites, and then compressing the layers so formed together so as to consolidate them, each consolidated layer corresponding to one of the parts of the object. The method permits especially the production of composite objects such as an electrochemical cell, a casting mold or a heliothermal converter. |
192 |
Mechanism to mold glass lenses using an implanted precision glass molding tool |
US11048558 |
2005-02-01 |
US20050126226A1 |
2005-06-16 |
Mary Winters; Carlos Alonzo; Paul McLaughlin; John Pulver; Anna Hrycin; Donald Stephenson |
A method for fabricating a molding tool for mold glass optical elements therewith is taught. The method comprises the steps of figuring the molding tool to have a predetermined mold surface; applying an attenuating coating to the predetermined mold surface; implanting metal ions through the attenuating coating and into the predetermined mold surface; and removing the attenuating coating leaving the predetermined mold surface with metal ions implanted therein. The method of fabrication allows for the molding tool made therewith to be used for molding optical elements from eco-glasses such as titania at high temperatures without generating adverse surface chemistry effects in the molded element. |
193 |
Mechanism to mold glass lenses using an implanted precision glass molding tool |
US10230908 |
2002-08-29 |
US20040050108A1 |
2004-03-18 |
Mary
K.
Winters; Carlos
F.
Alonzo; Paul
O.
McLaughlin; John
C.
Pulver; Anna
L.
Hrycin; Donald
A.
Stephenson |
A method for fabricating a molding tool for mold glass optical elements therewith is taught. The method comprises the steps of figuring the molding tool to have a predetermined mold surface; applying an attenuating coating to the predetermined mold surface; implanting metal ions through the attenuating coating and into the predetermined mold surface; and removing the attenuating coating leaving the predetermined mold surface with metal ions implanted therein. The method of fabrication allows for the molding tool made therewith to be used for molding optical elements from eco-glasses such as titania at high temperatures without generating adverse surface chemistry effects in the molded element |
194 |
Dental mold and method of producing a dental mold |
US10437428 |
2003-05-14 |
US20040041073A1 |
2004-03-04 |
Akihiro
Kuroiwa |
A dental mold is formed using, as a material, a mold material that formed a first mold having a first mold surface, and has a second mold surface different from the first mold surface. Alternatively, the material of the mold material contains powder after use obtained by grinding the first mold, and new powder added to the powder after use. The mold material is a quick heating type gypsum bonded mold material, and contains 1% of at least a gypsum. Alternatively, the mold material uses a gypsum at 25 to 45% and at least one of quartz and cristobalite at 55 to 75%. Further, the mold material contains one of chloride and alum as an additive. |
195 |
Binder compositions for bonding particulate material |
US09645037 |
2000-08-24 |
US06416572B1 |
2002-07-09 |
Emad Eldemallawy; Christopher C. Nail; Gregory J. Connor |
A bonded particulate material and a method for forming an bonded particulate material are defined. The material includes a particulate metal oxide that is capable of forming a metalate in the presence of an alkali. The metal oxide particles are typically dissolved in a solution of the alkali and then dried, such that an undissolved metal oxide core remains, surrounded by a metalate which is in turn bonded to metalate of adjacent particle and/or to a fill material. |
196 |
Core compositions and articles with improved performance for use in castings for gas turbine applications |
US09617013 |
2000-07-14 |
US06345663B1 |
2002-02-12 |
Frederic Joseph Klug; Robert Arthur Giddings |
A method for fabricating a fired ceramic article, a green product, and a fired ceramic article, all for use as a core in the investment casting of directionally solidified eutectic and superalloy material. A ceramic slurry is prepared of alumina, aluminum and a solution of a polymerizable binder in a liquid. The slurry is extruded under low pressure into a closed cavity to form a gelled green product which is subsequently heated in an oxygen-containing atmosphere, wherein the oxygen reacts with the aluminum in the green product to form alumina which advantageously causes an increase in volume of the green product which counters the shrinkage effects of heating. The polymerizable binder is of a type which cross-links with the alumina and upon heating the liquid component of such binder vaporizes and the remaining polymer component subsequently gasifies on further heating to leave desired interstitial pores within the green product, which assist in allowing the oxygen to permeate the green product, which assists in oxidation of the aluminum through the green product. The green product is thereafter sintered to form a substantially dimensionally precise ceramic article suitable for precision-casting of superalloy materials. |
197 |
Core compositions and articles with improved performance for use in
castings for gas turbine applications |
US224164 |
1998-12-31 |
US6152211A |
2000-11-28 |
Frederic Joseph Klug; Robert Arthur Giddings |
A method for fabricating a fired ceramic article, a green product, and a fired ceramic article, all for use as a core in the investment casting of directionally solidified eutectic and superalloy material. A ceramic slurry is prepared of alumina, aluminum and a solution of a polymerizable binder in a liquid. The slurry is extruded under low pressure into a closed cavity to form a gelled green product which is subsequently heated in an oxygen-containing atmosphere, wherein the oxygen reacts with the aluminum in the green product to form alumina which advantageously causes an increase in volume of the green product which counters the shrinkage effects of heating. The polymerizable binder is of a type which cross-links with the alumina and upon heating the liquid component of such binder vaporizes and the remaining polymer component subsequently gasifies on further heating to leave desired interstitial pores within the green product, which assist in allowing the oxygen to permeate the green product, which assists in oxidation of the aluminum through the green product. The green product is thereafter sintered to form a substantially dimensionally precise ceramic article suitable for precision-casting of superalloy materials. |
198 |
Binders for cores and molds |
US609111 |
1996-02-29 |
US6139619A |
2000-10-31 |
Leonid Zaretskiy; Robert L. Manning; Kwok-tuen Tse |
An inorganic binder system for foundry compositions includes a silicate and added phosphate. The composition produces a binder having the advantageous strength properties of a silicate binder system with the dispersibility properties of a phosphate binder system. Methods of making and using the binder systems and the resulting products are of particular interest to the foundry art. |
199 |
Molded bodies of cement type admixed and kneaded material having
excellent bending strength and compression strength and a method of
manufacturing the same |
US525612 |
1995-12-08 |
US6024791A |
2000-02-15 |
Hiroki Sonoda; Kikuo Kaga; Tatsuo Nitta; Masakazu Toyama; Seihachi Osawa; Kazumi Kato |
An admixed and kneaded material of a mixture of a hydraulic powder, a potentially hydraulic powder, water, and fine and coarse aggregates, if necessary is molded and hardened. Then the hardened body is heat cured to form silicic acid anions of at least a trimer. This molded and hardened body has a compression strength at least 1000 kgf/cm.sup.2 and a bending strength of at least 150 kgf/cm.sup.2 so that hardened cement body having a high mechanical strength can be obtained without using a special reinforcing member or fiber. The hardened concrete product of this invention has a high bending strength, compression strength and modulus of elasticity. A glaze can be applied and fired to obtain beautiful concrete products. |
200 |
Investment of powders and method for rapid preparation of investment
molds |
US712552 |
1996-09-13 |
US06013125A |
2000-01-11 |
Mashallah M. Quraishi; Anselmo J. Gutierrez |
The present invention relates to improved investment powders for use in making improved investment molds for casting metals, and the use of such molds with vacuum and/or either conventional, convection conduction or microwave heating apparatus, to rapidly eliminate water, wax and residual carbon from the mold cavities at temperatures lower than the casting temperature range of the mold at the time of casting. |