Glass Or Silicic Fiber Or Filament With Metal Coating Patents (Class 428/388)
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Patent number: 5354615Abstract: The subject invention relates to a coated reinforcement material comprising a SiC-based reinforcement having a rare earth boride coating preferably of the general formula:R.sub.x B.sub.1-xwhereinR is selected from the group consisting of Y, Sc, Gd, Tb, Dy, Ho,Er and combinations thereof; andx is from about 0.05 to about 0.66.The invention further relates to a high strength, high temperature performance composite comprising a SiC-based reinforcement material having a coating comprising a rare earth boride, said coated reinforcement material disposed in a metal matrix material.Type: GrantFiled: June 27, 1990Date of Patent: October 11, 1994Assignee: The Carborundum CompanyInventors: Michael A. Tenhover, Dorothy B. Lukco
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Patent number: 5352517Abstract: Processes for coating substrates, in particular substrates including shielded surfaces, with iron oxide-containing coatings are disclosed. Such processes comprise contacting a substrate with an iron oxide precursor, preferably maintaining the precursor coated substrate at conditions to equilibrate the coating, and then oxidizing the precursor to form a substrate containing iron oxide. Also disclosed are substrates coated with iron oxide-containing coatings for use in various magnetic applications.Type: GrantFiled: January 18, 1994Date of Patent: October 4, 1994Assignee: Ensci, Inc.Inventors: Thomas J. Clough, Victor L. Grosvenor, Naum Pinsky
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Patent number: 5352519Abstract: An article comprising a non-conductive substrate having a sub-micron thickness of a sulfur-doped oxidizable metal coating thereon. Optionally, the sulfur-doped oxidizable metal-coated substrate may be further coated with (i) a promoter metal which is galvanically effective to promote the corrosion of the oxidizable metal, discontinuously coated on the oxidizable metal coating, and/or (ii) a salt, to accelerate the galvanic corrosion reaction by which the oxidizable metal coating is oxidized. When utilized in a form comprising fine diameter substrate elements such as glass or ceramic filaments, the resulting product may usefully be employed as an evanescent chaff. In the presence of atmospheric moisture, such evanescent chaff undergoes oxidation of the oxidizable metal coating so that the radar signature of the chaff transiently decays.Type: GrantFiled: November 27, 1992Date of Patent: October 4, 1994Assignee: Advanced Technology Materials, Inc.Inventors: Ward C. Stevens, Edward A. Sturm, Bruce C. Roman
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Patent number: 5298298Abstract: This invention offers a unique method to fabricate unique, straight, curved, or coiled tubes as small as 1 micron (0.000004 inches) in diameter with wall thicknesses starting at less than 0.01 microns. These tubes can be made from many of the materials that can be applied to a surface of carbon, glass, or other tube forming fibers and then made to withstand the environment used to remove the fiber. A monolithic piece can be formed where the tubes are channels or holes.Type: GrantFiled: January 30, 1991Date of Patent: March 29, 1994Assignee: The United States of America as represented by the Secretary of the Air ForceInventor: Wesley P. Hoffman
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Patent number: 5296311Abstract: The invention provides silicon carbide fiber-reinforced, reaction-bonded silicon carbide composites suitable for high temperature applications in which the silicon carbide fiber is coated with AlN, BN or TiB.sub.2. The composites offer superior fracture toughness which is ascribed to fiber pullout. The invention also includes a process for making the composites.Type: GrantFiled: March 17, 1992Date of Patent: March 22, 1994Assignee: The Carborundum CompanyInventors: Carl H. McMurtry, Sa-Kwing Lau, Gajawalli V. Srinivasan, Stephen Chwastiak
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Patent number: 5227249Abstract: The subject invention relates to a coated reinforcement material comprising a SiC reinforcement having an outer core coating of the general formula:Ti.sub.x M.sub.y B.sub.zwherein M is at least one of V, Nb, Ta, Cr, Mo, W, Zr, and Hf; x is between about 30 and 60 atomic percent; y is between about 5 and 30 atomic percent; z is between about 35 and 60 atomic percent; and x+y+z=100. The invention further relates to a high strength, high temperature performance composite comprising a ternary boride coated SiC reinforcement material and titanium alloy matrix material.Type: GrantFiled: October 3, 1991Date of Patent: July 13, 1993Assignee: Standard Oil CompanyInventors: D. Lukco, M. A. Tenhover
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Titanium nitride coated silicon carbide materials with an interlayer resistant to carbon-diffusivity
Patent number: 5167943Abstract: Finely divided silicon carbide materials, particularly powders, whiskers and short fibers, are provided with a titanium nitride surface coating by the process of (i) placing a low carbon diffusivity layer atop the silicon carbon, (ii) placing a titanium metal coating atop the low carbon diffusivity layer, and (iii) nitriding the titanium metal.Type: GrantFiled: December 17, 1990Date of Patent: December 1, 1992Assignee: Norton CompanyInventors: Shih-Yee Kuo, Hyun-Sam Cho, Jeffrey D. Bright -
Patent number: 5162159Abstract: Coated reinforcement material for metal matrix composites comprising a carbon or silicon-containing reinforcement having a coating of the general formula:A.sub.100-x M.sub.xwherein A is at least one of Y, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu; M is at least one of Mo, W or Re; and x is from about 10 to about 90.Type: GrantFiled: November 14, 1991Date of Patent: November 10, 1992Assignee: The Standard Oil CompanyInventors: Michael A. Tenhover, Dorothy Lukco
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Patent number: 5156912Abstract: The subject invention relates to a coated reinforcement material comprising a SiC reinforcement having a coating of at least three layers, wherein the layers are alternately A-material layers of the general formula:Al.sub.x O.sub.y N.sub.zwherein x is up to about 60 atomic % of the coating;y is from about 20 atomic % to about 55 atomic % of the coating; andz is from about 5 atomic % to about 45 atomic % of the coating, with the proviso that x+y+z=100, and B-material layers comprising a metal alloy, such that the first and last layers of the coating are A-material layers. The invention further relates to a high strength, high temperature performance composite containing the above-specified coated reinforcement.Type: GrantFiled: December 20, 1989Date of Patent: October 20, 1992Assignee: The Standard Oil CompanyInventors: D. Lukco, M. A. Tenhover
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Patent number: 5154975Abstract: A liquid composition for glass fiber impregnation, characterized in that (A) it comprises (1) a resorcinol-formaldehyde resin, (2) a butadiene/styrene/vinylpyridine terpolymer, and (3) chlorosulfonated polyethylene, and (B) based on the total solids of the components (1), (2) and (3), the proportion of component (1) is 2 to 15% by weight, the proportion of component (2) is 15 to 80% by weight, and the proportion of component (3) is 15 to 70% by weight; and a glass fiber cord having a solid coating derived from the liquid composition. The glass fiber cord is useful as a reinforcing material in products, such as timing belts, which undergo both heat and an external force during travelling.Type: GrantFiled: June 10, 1991Date of Patent: October 13, 1992Assignee: Nippon Glass Fiber Co., Ltd.Inventors: Masato Sekiguchi, Akinobu Okamura
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Patent number: 5087515Abstract: An article comprising a non-conductive substrate which is coated with a sub-micron thickness of an oxidizable metal and overcoated with a microporous layer of an inorganic electrically insulative material. Optionally, the oxidizable metal-coated substrate may be sulfurized and/or further coated with (i) a promoter metal which is galvanically effective to promote the corrosion of the oxidizable metal, discontinuously coated on the oxidizable metal coating, and/or (ii) a salt, to accelerate the galvanic corrosion reaction by which the oxidizable metal coating is oxidized, prior to overcoating with the microporous insulative layer. Also disclosed is a related method of forming such articles, comprising chemical vapor depositing the oxidizable metal coating on the substrate and contacting the metallized substrate with a sol gel dispersion of the inorganic electrically insulative material which then is dried under suitable conditions to form the microporous layer on the substrate.Type: GrantFiled: December 11, 1989Date of Patent: February 11, 1992Assignee: Advanced Technology Materials, Inc.Inventors: Ward C. Stevens, Edward A. Sturm, Bruce C. Roman
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Patent number: 5026604Abstract: A composite structure having a fibrous reinforcing body formed from fibers of a refractory material, a ceramic matrix surrounding the fibers of the reinforcing body and an intermediate layer of a refractory material having a laminar structure disposed between the fibers of the refractory material having a laminar structure disposed between the fibers of the refractory material and the ceramic matrix and adherent to both. The intermediate layer has a thickness sufficient to reduce the susceptibility of the structure to crack propagation and to increase impact strength but not exceeding 3.0 microns. The intermediate layer is also elastically deformable in shear and has an elongation at break greater than the matrix.Type: GrantFiled: April 6, 1988Date of Patent: June 25, 1991Assignee: Societe Europeenne de PropulsionInventor: Jacques Thebault
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Patent number: 5024902Abstract: A fiber-reinforced metal comprising glass fibers and a matrix metal, said glass fibers having a nitrogen content of at least 8 atomic %. The fiber-reinforced metal has a high tensile strength and elasticity.Type: GrantFiled: June 15, 1990Date of Patent: June 18, 1991Assignee: Shimadzu CorporationInventors: Katsuaki Suganuma, Hiroyuki Fujii, Hiroyoshi Minakuchi, Katsuhiko Kada, Haruo Osafune, Kuniaki Kanamaru
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Patent number: 4970097Abstract: Fibrous glass substrates are coated with a substantially unhydrolyzed, hydrolyzable mixture of a silicon alkoxide and a titanium alkoxide and the coating is then hydrolyzed and cured. This provides the glass substrate with a long flex-life, abrasion resistant coating making the fibers of utility for use in forming filter bags.Type: GrantFiled: March 16, 1989Date of Patent: November 13, 1990Assignee: Owens-Corning Fiberglas CorporationInventor: Marie R. Kalinowski
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Patent number: 4948662Abstract: Oxide-based ceramic fibers are treated in a novel process to create a substantially uniform boron nitride barrier coating at their surface. The process involves heating the fibers in a nitriding atmosphere at between about 2200-2600.degree. F. to create a BN coating at the surface of the fiber from boron initially within the fiber.Type: GrantFiled: April 7, 1986Date of Patent: August 14, 1990Assignee: The Boeing CompanyInventors: Frederick H. Simpson, Juris Verzemnieks
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Patent number: 4935296Abstract: A metal-coated substrate, e.g., of glass, ceramic, or a hydroxy-functionalized material, wherein the improvement comprises a polysilicate, titania, or alumina interlayer between the substrate and the metal coating. The interlayer may have a porous microstructure, e.g., a polysilicate interlayer with an average pore size on the order of 50-150 Angstroms.Such articles, e.g., in the form of metal-coated fibers, may suitably be employed as reinforcing media in material composites having utility in structural applications, such as EMI shielding elements.Also disclosed is a corresponding method for forming a metal coating on a substrate by the provision of an interlayer of the above type. The interlayer may suitably be formed by applying to the substrate a sol gel dispersion of the polysilicate, titania, or alumina material, followed by drying of the applied dispersion.Type: GrantFiled: October 31, 1988Date of Patent: June 19, 1990Assignee: Advanced Technology Materials, Inc.Inventor: Ward C. Stevens
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Patent number: 4888311Abstract: A composite ceramic-ceramic material is disclosed having a fibrous reinforcing ceramic and a ceramic matrix made of a geopolymeric compound containing:(a) a poly(sialate) geopolymer M.sub.n (--Si--O--Al--O--).sub.n and/or poly(sialate-siloxo) M.sub.n (--Si--O--Al--O--Si--O--).sub.n, M representing at least one alkaline cation, and n the degree of polymerization;(b) ultrafine silicious and/or aluminous and/or silico-aluminous constituents, of size smaller than 5 microns, preferably lower than 2 microns,the said geopolymeric compound being obtained by polycondensation at a temperature between 20.degree. C. and 120.degree. C. of an alkaline alumino-silicate reaction mixture, the composition of the principal constituents of the said geopolymeric compound expressed in terms of mole ratios of the oxides being between or equal to following values:M.sub.2 O/SiO.sub.2 --0.10 TO 0.95,SiO.sub.2 /Al.sub.2 O.sub.3 --2.50 TO 6.00,M.sub.2 O/Al.sub.2 O.sub.3 --0.25 TO 5.70,M.sub.2 O representing either Na.sub.2 O and/or K.Type: GrantFiled: June 10, 1988Date of Patent: December 19, 1989Inventors: Nicolas Davidovits, Michel Davidovics, Joseph Davidovits
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Patent number: 4876148Abstract: Ceramic bodies having a balanced overall stress pattern in which are present individual stress zones of compressive and tensile stresses and the techniques for forming said bodies are disclosed. The bodies are formed by having slightly different compositional patterns from one zone to another whereby during cooling there is a differential volumetric expansion or contraction in one zone as compared to an adjacent zone. The volumetric expansion or contraction is caused by a material which undergoes a phase transformation during the cooling from the sintering temperatures utilized to sinter the ceramic body, whereby such phase transformation is accompanied by a volumetric change.Type: GrantFiled: June 30, 1987Date of Patent: October 24, 1989Assignee: Ceramatec, Inc.Inventor: Anil V. Virkar
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Patent number: 4839449Abstract: A polysaccharide derivative having the structure Sacch--O--Z--Ar--CH.dbd.N--Y or ##STR1## where Sacch-O- represents a polysaccharide molecule; Z is --(CH.sub.2).sub.n -- or ##STR2## Ar is a divalent aromatic group; Y is (a) a monovalent group derived from a water-soluble substituted or unsubstituted aromatic compound containing only one free primary amine group, or (b) a monovalent group derived from a water-soluble substituted or unsubstituted aliphatic or cycloaliphatic compound containing only one primary amine group, or (c) a multivalent group derived from a water-soluble protein containing more than one primary amine group; n is one or greater; and m is zero or greater, is prepared by first modifying the polysaccharide with a reagent to introduce free aromatic aldehyde groups and then reacting with a suitable amine-containing reagent. The siloxane-containing starch derivatives are useful in glass forming size compositions.Type: GrantFiled: October 26, 1987Date of Patent: June 13, 1989Assignee: National Starch and Chemical CorporationInventors: Robert L. Billmers, David M. Del Giudice, Martin M. Tessler, Michael J. Hasuly
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Patent number: 4822679Abstract: A thermal insulation is formed by simultaneously spraying ceramic fibers and a binder at a surface to be covered. An aqueous binder is prepared prior to application to the fiber during the spraying operation. The binder includes an organic component which provides necessary wet and green adhesion to the substrate surface and wet and green cohesion to the newly formed lining prior to firing of the sprayed-on layer. The binder also includes an inorganic component which functions at and after exposure to a high temperature to secure the ceramic fibers to the substrate and to one another. Drying and firing of the layer develops strength in the inorganic binder. Known ceramic fibers such as alumina-silica amorphous fibers, alumina-silica-zirconia fibers, polycrystalline mullite fibers, alumina fibers, mineral fibers, or combinations thereof, and the like may be employed. The fiber may be precoated with the organic binder.Type: GrantFiled: January 13, 1987Date of Patent: April 18, 1989Assignee: Stemcor CorporationInventors: Juan M. Cerdan-Diaz, Michael J. Sanders, Mark E. Wellar
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Patent number: 4778722Abstract: A reinforcing inorganic fiber composed of an internal layer and a surface layer, whereinsaid internal layer is composed of an inorganic material containing silicon, either titanium or zirconium, carbon and oxygen which is(i) an amorphous material consisting substantially of Si, M, C and O, or(ii) an aggregate consisting substantially of ultrafine crystalline particles with a particle diameter of not more than 500 .ANG. of .beta.-SiC, MC, a solid solution of .beta.-SiC and MC and MC.sub.1-x, wherein M represents titanium or zirconium, and x is a number represented by 0<x<1, or(iii) a mixture of the amorphous material (i) and the aggregate (ii), andsaid surface layer is composed of an inorganic material consisting of silicon, either titanium or zirconium, and oxygen and optionally not more than 5% by weight of carbon which is(iv) an amorphous material consisting substantially of Si, M and O,(v) an aggregate composed of crystalline SiO.sub.2 and MO.sub.Type: GrantFiled: May 11, 1987Date of Patent: October 18, 1988Assignee: Ube Industries, Ltd.Inventors: Takemi Yamamura, Toshihiro Ishikawa, Masaki Shibuya
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Patent number: 4755313Abstract: Insulating device for high and low temperatures with at least one insulating material, characterized by the feature that the insulating material is formed at least in part of total reflecting fibers.Type: GrantFiled: August 8, 1985Date of Patent: July 5, 1988Assignee: Brown, Boveri & Cie AGInventors: Georg Wahl, Franz Schmaderer, Cord-Henrich Dustmann, Harald Reiss, Botho Ziegenbein
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Patent number: 4750806Abstract: Solid fibers or capillaries are coated with a metal, alloy or dielectric capable of withstanding temperatures in excess of 300.degree. C. and preferably 500.degree. C. The coating is deposited by a heterogeneous nucleation thermochemical deposition process occurring on the surface of the fiber.Type: GrantFiled: June 17, 1985Date of Patent: June 14, 1988Assignee: Alcatel USA CorporationInventor: Dipak R. Biswas
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Patent number: 4738896Abstract: A metal-coated substrate, e.g., of glass, ceramic, or a hydroxy-functionalized material, wherein the improvement comprises a polysilicate, titania, or alumina interlayer between the substrate and the metal coating. The interlayer may have a porous microstructure, e.g., a polysilicate interlayer with an average pore size on the order of 50-150 Angstroms.Such articles, e.g., in the form of metal-coated fibers, may suitably be employed as reinforcing media in material composites having utility in structural applications, such as EMI shielding elements.Also disclosed is a corresponding method for forming a metal coating on a substrate by the provision of an interlayer of the above type. The interlayer may suitably be formed by applying to the substrate a sol gel dispersion of the polysilicate, titania, or alumina material, followed by drying of the applied dispersion.Type: GrantFiled: September 26, 1986Date of Patent: April 19, 1988Assignee: Advanced Technology Materials, Inc.Inventor: Ward C. Stevens
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Patent number: 4735857Abstract: A fiber glass is provided for filling in a defect or hollow portion of bone. The fiber glass comprises calcium phosphate as a main ingredient and has a negative zeta potential. The calcium phosphate has a molar ratio of Ca/P of not less than 0.2 and less than 0.6 and the total content of CaO plus P.sub.2 O.sub.5 less than 80 wt %. The fiber glass is of long filament form or staple fiber form. The fiber glass of long filament form may be woven to form a woven filler.Type: GrantFiled: July 8, 1986Date of Patent: April 5, 1988Assignee: Mitsubishi Mining & Cement Co., Ltd.Inventors: Hideo Tagai, Masahiro Kobayashi, Shigeo Niwa, Hiroyasu Takeuchi, Mikiya Ono
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Patent number: 4732879Abstract: A method for applying porous, preferably catalytically active metal oxide coatings to relatively non-porous substrates in a fibrous form, and the catalyst materials thereby obtained. A solution is formed of one or more hydrolyzable precursors of metal oxides, in an anhydrous, organic solvent. The substrate to be coated, having active surface hydroxyl groups and preferably being glass or ceramic, is dipped into the solution and thereafter removed, drained and dried in an atmosphere containing water vapor so as to form a uniform, and at least partially hydrolyzed metal hydroxide/alkoxide coating on the substrate. The thus coated substrate is cured by heating in one or more stages at temperatures in the range of between about 250.degree. and 500.degree. C. to form an adherent, highly porous coating of the corresponding metal oxide.Type: GrantFiled: November 8, 1985Date of Patent: March 22, 1988Assignee: Owens-Corning Fiberglas CorporationInventors: Marie R. Kalinowski, Gary M. Nishioka
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Patent number: 4699849Abstract: A metal matrix composite is produced by plastically deforming a metal powder, either before or after blending the powder with ceramic fibers, and compacting the mixture at elevated temperatures to achieve substantially full density. Imparting strain energy to the metal allows reduction of the compaction temperature to eliminate reaction between the fibers and the metal or degradation of the fibers. Silicon nitride fibers are thermodynamically superior for use in aluminum or titanium metal matrix composites, since silicon nitride fibers are more stable at the temperatures required for full compaction. Secondary phase reactions are avoided.Type: GrantFiled: July 17, 1985Date of Patent: October 13, 1987Assignee: The Boeing CompanyInventor: K. Bhagwan Das
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Patent number: 4677009Abstract: Ceramic bodies having a balanced overall stress pattern in which are present individual stress zones of compressive and tensile stresses and the techniques for forming said bodies are disclosed. The bodies are formed by having slightly different compositional patterns from one zone to another whereby during cooling there is a differential volumetric expansion or contraction in one zone as compared to an adjacent zone. The volumetric expansion or contraction is caused by a material which undergoes a phase transformation during the cooling from the sintering temperatures utilized to sinter the ceramic body, whereby such phase transformation is accompanied by a volumetric change.Type: GrantFiled: October 29, 1985Date of Patent: June 30, 1987Assignees: Ceramatec, Inc., The Dow Chemical CompanyInventor: Anil V. Virkar
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Patent number: 4656071Abstract: Ceramic bodies having a balanced overall stress pattern in which are present individual stress zones of compressive and tensile stresses and the techniques for forming said bodies are disclosed. The bodies are formed by having slightly different compositional patterns from one zone to another whereby during cooling there is a differential volumetric expansion or contraction in one zone as compared to an adjacent zone. The volumetric expansion or contraction is caused by a material which undergoes a phase transformation during the cooling from the sintering temperatures utilized to sinter the ceramic body, whereby such phase transformation is accompanied by a volumetric change.Type: GrantFiled: October 29, 1984Date of Patent: April 7, 1987Assignees: Ceramatec, Inc., The Dow Chemical Co.Inventor: Anil V. Virkar
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Patent number: 4642271Abstract: A ceramic fiber composite material comprised of boron nitride coated cera fibers embedded in a ceramic matrix. The boron nitride coating limits both physical bonding and chemical reaction between the fibers and matrix to improve both strength and toughness of the composite material.Type: GrantFiled: February 11, 1985Date of Patent: February 10, 1987Assignee: The United States of America as represented by the Secretary of the NavyInventor: Roy W. Rice
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Patent number: 4605588Abstract: Oxide-based ceramic fibers are treated in a novel process to create a substantially uniform boron nitride barrier coating at their surface. The process includes the step of heating the fiber, preferably an aluminoborosilicate fiber like NEXTEL, for between about 5-90 minutes in a nitriding atmosphere of ammonia, hydrogen and nitrogen at a temperature of between about 2200.degree.-2600.degree. F. to diffuse boron from the fiber to the surface of the fiber where it reacts to form the boron nitride coating.Type: GrantFiled: March 14, 1985Date of Patent: August 12, 1986Assignee: The Boeing CompanyInventors: Frederick H. Simpson, Juris Verzemnieks
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Patent number: 4549187Abstract: This invention relates to an antenna material and more particularly to an antenna material comprising, in its preferred embodiment, a woven mesh of amorphous silica fibers, a conductive metal coating on at least the outer surfaces of the mesh and a lubricant covering and adhering to non-metallized surfaces of the silica fibers.Type: GrantFiled: April 5, 1982Date of Patent: October 22, 1985Assignee: Lockheed Missiles & Space Company, Inc.Inventor: Donald J. Levy
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Patent number: 4486490Abstract: A novel electrically and thermally conductive prepreg is provided comprising a resin impregnated fabric woven from a multiplicity of dielectric fibers at least some of which are metal-coated, e.g. aluminum-coated glass fibers. Articles made therefrom are useful for dissipation of static electricity, lightening strike protection, EMI shielding and antennae surfaces. Directional conductivity is achieved by orientation of the metal-coated fibers in the ply.Type: GrantFiled: July 31, 1980Date of Patent: December 4, 1984Assignee: Hexcel CorporationInventors: Gary L. Patz, Donald E. Davenport
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Patent number: 4473618Abstract: Chrome-free aqueous sizing composition for glass fiber gun roving contains a mixture of emulsified film-forming polymers, titanium acetyl acetonate, silylated polyazamide, cationic lubricant and methacryloxypropylsilane.Type: GrantFiled: May 13, 1983Date of Patent: September 25, 1984Assignee: Owens-Corning Fiberglas CorporationInventors: Leonard J. Adzima, Jeffrey L. Antle, David E. Musick, Fred G. Krautz
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Patent number: 4444845Abstract: This invention relates to a new process for the production of coatings by coating heat-resistant substrates with a coating compound in which the binder is a two-component system containing polyisocyanates having at least partially blocked isocyanate groups and compounds containing isocyanate reactive groups and optionally further auxiliary agents and additives, the two-component system being one in which from about 0.1 to 60 equivalent % of the component containing isocyanate reactive groups consists of N,N',N"-tris-(2-hydroxyethyl)-isocyanurate, and to the coated substrate produced therefrom.Type: GrantFiled: August 13, 1982Date of Patent: April 24, 1984Assignee: Bayer AktiengesellschaftInventor: Willi Dunwald
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Patent number: 4407561Abstract: There is disclosed a metallic clad glass fiber optical waveguide suitable for use as a high-strength optical transmission line, e.g., for high capacity communications systems and for sensors operating at high temperature. A metallic coating or jacket is formed on the glass waveguide structure, which comprises a core and glass cladding, by coating the glass fiber as it emerges from the furnace with a metal or alloy. The metal or alloy employed is one that (a) is substantially chemically inert with respect to the material comprising the glass fiber at the melting point of the metal or alloy during coating of the metal or alloy onto the glass fiber, (b) has a recrystallization temperature greater than room temperature or the contemplated working temperature, whichever is greater, and (c) forms a hermetic seal around the outer surface of the glass cladding.Type: GrantFiled: October 14, 1980Date of Patent: October 4, 1983Assignee: Hughes Aircraft CompanyInventor: Joseph A. Wysocki
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Patent number: 4390589Abstract: Fibers are coated with a metal layer by applying onto the fiber a relatively high viscosity slurry comprising an alloy in the form of liquid and solid phases. This allows application of metal coatings on layers that do not "wet" with the liquid metal. For example, an optical fiber having a soft polymer layer to reduce microbending losses is coated with a metal to prevent moisture entry. An alloy of Bi-Sn or In-Sn, among others, allows coating at a relatively low temperature to prevent polymer degradation. Other fibers for various uses can also be advantageously coated with this technique.Type: GrantFiled: February 26, 1982Date of Patent: June 28, 1983Assignee: Bell Telephone Laboratories, IncorporatedInventors: Franz T. Geyling, Theodore J. Louzon
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Patent number: 4332853Abstract: Articles of a thermoplastic having an improved level of electromagnetic shielding are molded from plastic pellets that have a core of metalized glass fibers that are arranged to partially disperse through the molded article as individual fibers and partially to remain in clumps of generally aligned closely contacting fibers. The clumps have approximately the length of an individual fiber but they are substantially wider than an individual fiber. Improved conductivity is attributed to increased electrical bridging between fibers that is provided by the width of the clumps of fibers.Type: GrantFiled: September 26, 1980Date of Patent: June 1, 1982Assignees: International Business Machines Corporation, Lundy Electronics & Systems, Inc.Inventors: Frederick C. Hornbeck, James E. Henning
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Patent number: 4312913Abstract: Weavable yarns whose fibers are metallic or have a heat conducting, metallized coating are woven together with a plurality of yarn layers using, say, an angle weave to produce an interlocked, multilayer fabric. The fabric provides heat conduction paths for the efficient transferring of heat from a substrate.Typical coated or metallic fibers which may be employed in the yarn include glass, graphite, ceramic, polyester, nylon, rayon, cotton, wool, acrylonitrile, etc.; metallic fibers such as copper, aluminum and steel are also suitable. A preferred heat conductive coating comprises an aluminum, aluminum alloy or other suitable metal which can be applied to a glass fiber.Type: GrantFiled: May 12, 1980Date of Patent: January 26, 1982Assignee: Textile Products IncorporatedInventor: Walter A. Rheaume
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Patent number: 4283238Abstract: A method of reconstituting an external conductor of a coaxial cable which stands up well to bending and has good electromagnetic propagation. Solid non-perforated or woven strips are wound in a helix along the whole length of the part which is to be repaired and the ends of the intact external conductor and said strips are glued on these ends with an electrically conductive glue. Application to coaxial telephone cables.Type: GrantFiled: June 2, 1978Date of Patent: August 11, 1981Assignee: Les Cables de LyonInventor: Patrick Jacquemart
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Patent number: 4258101Abstract: Articles of a thermoplastic having an improved level of electromagnetic shielding are molded from plastic pellets that have a core of metalized glass fibers that are arranged to partially disperse through the molded article as individual fibers and partially to remain in clumps of generally aligned closely contacting fibers. The clumps have approximately the length of an individual fiber but they are substantially wider than an individual fiber. Improved conductivity is attributed to increased electrical bridging between fibers that is provided by the width of the clumps of fibers.Type: GrantFiled: August 4, 1978Date of Patent: March 24, 1981Assignee: Internation Business Machines CorporationInventors: Edward G. Crosby, Frederick C. Hornbeck
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Patent number: 4243715Abstract: A fabric of amorphous silica is provided having greatly improved life for bag collectors at high temperatures. This is accomplished by applying a thin coating of gold on the amorphous silica fibers of which the fabric is made. The gold is non-reactive at high temperature and has sufficient lubricity to lubricate the fibers and prevent abrasion of adjacent fibers by each other. The gold coating additionally helps protect the amorphous silica fibers from devitrification. An additional coating of indium may also be applied to form a liquid film at high temperature for increased lubrication. The coating may be applied by dipping or spraying the fabric.Type: GrantFiled: April 27, 1979Date of Patent: January 6, 1981Assignee: Aerodyne Development CorporationInventor: Mack Gordon
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Patent number: 4243460Abstract: A laminate of insulating material having fine metallic articles dispersed therein is rendered highly conductive by passing electrical energy through the laminate of sufficient strength to break down the dielectric resistance of the insulating material at the points of contact of the metallic articles.Type: GrantFiled: August 15, 1978Date of Patent: January 6, 1981Assignee: Lundy Electronics & Systems, Inc.Inventor: Robert T. Nagler
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Patent number: 4234648Abstract: A novel electrically and thermally conductive prepreg is provided comprising a resin impregnated fabric woven from a multiplicity of dielectric fibers at least some of which are metal-coated, e.g. aluminum-coated glass fibers. Articles made therefrom are useful for dissipation of static electricity, lightening strike protection, EMI shielding and antennae surfaces. Directional conductivity is achieved by orientation of the metal-coated fibers in the ply.Type: GrantFiled: January 29, 1979Date of Patent: November 18, 1980Assignee: Hexcel CorporationInventors: Gary L. Patz, Donald E. Davenport
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Patent number: 4201827Abstract: A supporting web of synthetic fibers in which a permanently magnetic powder s embedded is used to hold fine magnetic particles in a matrix for interaction with dissolved or dispersed substances present in a liquid or gas flowing through the matrix. The magnetic force in the supporting web produced by the embedded powder lends flow resistance to the adhering particle matrix making it possible to use smaller particles effectively. Catalytic effects can be produced if the magnetic particles are coated with a nonmagnetic material having a catalytic effect for the dissolved or suspended substance, as the coating does not interfere with the tenacity of the magnetically supported matrix. A matrix with particles of a ferrimagnetic compound are useful for removal of metal ions and metal complex ions from water solution as for example uranium.Type: GrantFiled: November 23, 1977Date of Patent: May 6, 1980Assignee: Kernforschungsanlage Julich Gesellschaft mit beschrankter HaftungInventor: Dieter Heitkamp
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Patent number: 4195114Abstract: A new plastic-metal composite material and method of preparing the material is disclosed. Fibers that are coated with metal form a matrix in the plastic that gives the composite material sufficient electrical and thermal conductivity for many applications. In a preferred embodiment of the new method of this invention, metal is formed on glass fibers by vacuum deposition and the metal coated fibers are combined with a selected plastic in a pellet form that is suitable for injection molding operations.Type: GrantFiled: September 12, 1978Date of Patent: March 25, 1980Assignee: International Business Machines CorporationInventors: Edward G. Crosby, James E. Henning, Frederick C. Hornbeck
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Patent number: 4174241Abstract: The present invention relates to simultaneous press polishing and lamination of laminated plastic transparencies such as are used in aircraft as aircraft windshields or aircraft canopies. The present invention is especially useful to minimize deviations from surface smoothness of the all plastic laminates due to the entrapment of air that form air pockets within a flexible evacuating bag within which an assembly to be press polished and laminated is inserted during its fabrication.Type: GrantFiled: July 21, 1978Date of Patent: November 13, 1979Assignee: PPG Industries, Inc.Inventors: Paul A. Rockar, Melvin K. Law, Thomas W. Hawk
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Patent number: 4173393Abstract: An optical waveguide includes a core of high purity fused silica, a cladding of high purity fused silica and a protective coating of metallic glass. The protective coating is applied as a liquid which contracts more than the glass after it solidifies to place the surface of the glass cladding under compression. Because the waveguide will break only under tension, the force of compression must be overcome before the waveguide can be fractured thereby strengthening the waveguide considerably. The metallic glass coating provides further advantages of abrasion protection and the prevention of fatigue.Type: GrantFiled: June 6, 1977Date of Patent: November 6, 1979Assignee: Corning Glass WorksInventor: Robert D. Maurer
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Patent number: 4169182Abstract: Heat insulating materials having excellent heat resistance and durability prepared from glass-ceramic fibers composed chiefly of crystals, e.g., .beta.-spodumene and/or cordierite and containing 0.1 to 15% by weight of at least one metallic element capable of absorbing radiant heat energy, e.g., Cu, Co, Fe, Ni, Cr, Mn, Mg. The metallic element may be in the form of the metal or an oxide thereof and may be present as a film or coating on the fibers.Type: GrantFiled: May 20, 1976Date of Patent: September 25, 1979Assignees: Honda Giken Kogyo Kabushiki Kaisha, Ishizuka Carasu Kabushiki KaishaInventors: Shigeru Seki, Toshio Kobayashi, Taketoshi Kato, Tsuguya Suzuki, Toshihiko Matsubara
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Patent number: 4157420Abstract: A new process of adhesive-coating which makes it possible to increase the adhesion of glass fibers to rubbers based on natural rubber. The fibers are impregnated by means of a composition consisting or consisting essentially of a solution containing a resorcinol/formaldehyde resin, a natural latex, a latex based on vinylpyridine and, preferably, ammonium hydroxide, and while passing through the coating bath they are subjected to vibratory movements communicated directly to the fibers. The glass fibers adhesive-coated in this way are of great interest to the rubber industry in the manufacture of tires, conveyors, conveyor belts, hoses and the like.Type: GrantFiled: August 2, 1977Date of Patent: June 5, 1979Assignee: Rhone-Poulenc-TextileInventors: Paul Bourrain, Pierre Giroud