Metal Base Patents (Class 427/318)
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Patent number: 5648121Abstract: A fishing weight having an outer surface. The fishing weight is formed from a zinc alloy which is environmentally safe. It has a protective coating covering the entire outer surface. The covering is non-corrosive when exposed to water so that if it is chipped or broken, the environmentally safe zinc alloy of the weight will not contaminate the environment.Type: GrantFiled: April 11, 1995Date of Patent: July 15, 1997Inventors: Thomas W. Cornell, Jr., John L. Reinbold
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Patent number: 5648119Abstract: A diamond-coated tool and a process for making them. The process includes a sintering step. In that step, a substrate is sintered in an atmosphere and for a time and at a temperature so that superficial, exaggerated grain growth is promoted that imparts a surface roughness which may serve as anchoring sites during a subsequent diamond coating step which is performed by a vapor deposition technique. The diamond-coated tool or wear part includes a large grain substrate surface, and a high bond strength between the diamond coating and the substrate surface.Type: GrantFiled: May 10, 1995Date of Patent: July 15, 1997Assignee: Kennametal Inc.Inventors: George P. Grab, William M. Melago, Edward J. Oles, Charles Erik Bauer, Aharon Inspektor, Gerald D. Murray
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Patent number: 5639514Abstract: A process for coating a metal substrate for packaging end use by applying to a primary substrate a thermosettable composition which is free of added solvent and has a residual solvent content not exceeding 10% derived from the manufacture of any of the ingredients. The composition is applied as a thermosettable film by extrusion in melt (including plastified) form through an extrusion coating die onto a substrate. There is relative movement between the die and the substrate so that successive areas on the substrate are coated with the thermosettable composition, so as to form a film. The primary substrate is the metal substrate for packaging end use or an intermediate temporary support from which the applied coating is transferred onto the metal substrate for packaging end use. The applied coating is thermally cured after extrusion through the extrusion coating die. Compositions suitable for use in this and other coating processes are described.Type: GrantFiled: March 1, 1995Date of Patent: June 17, 1997Assignee: Courtaulds Coatings (Holdings) LimitedInventors: Ian Thomas Jones, Anthony Brian Port
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Patent number: 5614262Abstract: This invention relates to a method of sealing resin to an alloy casting using either an aromatic solvent or an aqueous-based solution. The method includes providing a resin and combining the aromatic solvent with the resin to form a sealing coating which has a predetermined concentration by volume of resin to sealing coating. The method continues by heating the alloy casting to a first predetermined temperature and then selectively applying the sealing coating to the heated alloy casting. Finally the heated alloy casting is baked at a second predetermined temperature for a predetermined time period. Variations of this process using an aqueous-based solution include providing an aqueous-emulsified resin, and then combining the aqueous-emulsified resin with at least one base solvent to form a final aqueous-based solution which has a predetermined concentration by volume of base solvent to final aqueous-based solution. The process allows for the selection of differing materials to be combined.Type: GrantFiled: May 2, 1994Date of Patent: March 25, 1997Assignee: Sundstrand CorporationInventor: Leonard S. Joesten
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Patent number: 5614261Abstract: A continuously advancing workpiece (e.g., a steel rod) is treated prior to size reduction by drawing. The rod is preheated and then a liquid (such as a borax solution) is applied to the surface of the rod. The preheating of the rod provides sufficient residual heat within the rod to rapidly and evenly dry the liquid such that the rod is provided with a thick and uniform coating. Also disclosed is a system for conditioning the coating liquid.Type: GrantFiled: June 5, 1992Date of Patent: March 25, 1997Assignee: Wirelube Research CompanyInventor: James F. Richards
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Patent number: 5601920Abstract: The problems caused by chemical and thermal shrinkage of hard roll covers, are reduced by the inclusion of one or more intermediate compressive layers between the metal roll and the outer cover, or "topstock". A compressive layer has the properties of being rigid enough to allow the cover to be applied to the roll, and compressible enough to buffer and absorb the stresses which occur as the cover is shrinking during processing.In one embodiment, the intermediate compressive layer comprises a three dimensional fabric that is filled preferably with a thermoset resin system which cures at lower temperature than cover. In a second embodiment, the precise amount of shrinkage in the roll can be predetermined to a high enough degree of accuracy so that a depth for the fabric layer can be used to compensate for the amount of shrinkage, thereby eliminating the need for filling. In a third embodiment, the compressive layer is comprised of a wax material.Type: GrantFiled: April 6, 1995Date of Patent: February 11, 1997Assignee: Stowe Woodward Licensco, Inc.Inventors: Jan A. Paasonen, Seppo A. Ylisel a
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Patent number: 5587233Abstract: Composite body consisting of a hard metal, steel, ceramic, particularly sintered ceramic or cermet substrate body or a substrate body made of diamond or a nickel or cobalt-based alloy and of one or more surface layers, of which at least one, preferably the outer layer, consists of Al.sub.2 O.sub.3 with a fine crystalline structure, which has been applied by means of a plasma CVD process at substrate temperatures of 400.degree. C. to 750.degree., preferably 450.degree. C. to 550.degree., with a substrate body connected as cathode and with a plasma activation produced with a pulsed direct voltage.Type: GrantFiled: August 30, 1994Date of Patent: December 24, 1996Assignee: Widia GmbHInventors: Udo Konig, Hendrikus Van Den Berg, Ralf Tabersky
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Patent number: 5567480Abstract: Described is a method for manufacturing a coal tar enamel-coated steel pipe, in which a primer coat of epoxy resin is applied to a preheated steel pipe, and coal tar enamel is applied to the primer coat prior to full curing of the latter. The resulting coated steel pipes, which also are described, exhibit excellent resistance to cathodic disbondment, heat and water. In some embodiments the primer includes a silane coupling agent.Type: GrantFiled: December 8, 1994Date of Patent: October 22, 1996Assignee: Reilly Industries, Inc.Inventors: John R. Johnson, William R. Roder, C. Sherill Henegar
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Patent number: 5554411Abstract: A beta-double prime aluminum oxide solid electrolyte (24) is prepared for wetting by a liquid electrode material. The method includes mechanically rubbing an asperity-filling metal against the surface (32) of the solid electrolyte (24) until the solid electrolyte (24) turns gray in color, which fills in asperities (34) in the surface (32) of the electrolyte (24). The electrolyte (24) and deposited asperity-filling metal (36) are heated to a temperature above the melting point of sodium, and sodium is de posited onto the electrolyte surface (32) and permitted to wick along the surface (32).Type: GrantFiled: December 6, 1994Date of Patent: September 10, 1996Assignee: Hughes Aircraft CompanyInventors: Lin R. Higley, Janet L. Dalke
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Patent number: 5545262Abstract: A metal surface is now described having enhanced adhesion of subsequently applied coatings. The substrate metal of the article, such as a valve metal as represented by titanium, is provided with a highly desirable surface characteristic for subsequent coating application. This can be initiated by selection of a metal of desirable metallurgy and heat history, including prior heat treatment to provide surface grain boundaries which may be most readily etched. In subsequent etching operation, the surface is made to exhibit well defined, three dimensional grains with deep grain boundaries. Subsequently applied coatings, by penetrating into the etched intergranular valleys, are desirably locked onto the metal substrate surface and provide enhanced lifetime even in rugged commercial environments.Type: GrantFiled: November 16, 1994Date of Patent: August 13, 1996Assignee: ELTECH Systems CorporationInventors: Kenneth L. Hardee, Lynne M. Ernes, Richard C. Carlson, David E. Thomas
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Patent number: 5518768Abstract: A method and apparatus for the application for one or more deposits of material to a succession of discrete articles such as fasteners as is provided. The method and apparatus of the present invention deposits a droplet or extended bead of thermoplastic or thermoset material onto the surface of a part that is urged into a postion once it solidifies to extends above the surface of the part to create assembly resistance when the part is assembled into or over another part.Type: GrantFiled: February 3, 1995Date of Patent: May 21, 1996Assignee: ND Industries, Inc.Inventors: John S. Wallace, Charles Stempien
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Patent number: 5506017Abstract: This patent teaches a new method of roughening the surface of a magnetic recording medium in order to reduce the stiction and friction between a recording head and the medium to thereby improve mechanical reliability. During this method, the medium substrate is heated to form second phase precipitates which result in roughening of the medium surface. The medium roughness can be controlled by proper selection of the heating temperature and time and the substrate alloy. This results in improved contact-start-stop (CSS) performance of the medium. The method of the present invention allows for lower costs and potentially higher throughput than conventional texturing processes.Type: GrantFiled: June 7, 1995Date of Patent: April 9, 1996Assignee: Komag IncorporatedInventors: Rajiv Y. Ranjan, Kuo H. Huang, Caroline A. Ross
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Patent number: 5492721Abstract: Enamelled wire is produced using almost solvent-free fusible resins. Molten resin is pumped from a supply reservoir against the direction of movement of the wire with part of the resin coating the wire. The raw wire is preheated to a temperature near the melting temperature of the molten resin. Excess resin is returned to the supply reservoir after the resin coating the wire has been calibrated to a predetermined circumferential dimension. The resin coating the wire is then hardened. The coating apparatus includes a raw wire guide, a demineralized water bath, an annealing furnace having a protective steam atmostphere, a cooling water bath, a wire preheater, an enameling stove, a heated resin reservoir, a resin applicator and a winding-on machine. The resin coating is applied under closed system conditions, thereby substantially reducing emissions.Type: GrantFiled: June 8, 1993Date of Patent: February 20, 1996Assignee: MAG Maschinen und Apparatebau Gesellschaft mbHInventors: Herbert Berthold, Hans-Peter Pichler
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Patent number: 5474799Abstract: There is disclosed a method and apparatus for coating an electromagnetic coil, particularly stator coils for an electric motor, with an insulating catalyzed resin material. The catalyzed resin material is a two component material comprising an epoxy resin and a catalyst. The catalyzed resin material is a free flowing liquid at a first temperature and begins to cure rapidly at a second elevated temperature. The stator coils are first heated by supplying current to the stator coils to raise the temperature of the stator coils to the first temperature. The free flowing liquid catalyzed resin material is dispensed through nozzles onto the stator coils as the stator coils and the nozzles move relative to each other. After the liquid catalyzed resin material has been dispensed in a predetermined amount, at predetermined locations, for predetermined times, the catalyzed resin material is allowed to penetrate the stator coils.Type: GrantFiled: October 13, 1992Date of Patent: December 12, 1995Assignee: Reliance Electric Industrial CompanyInventors: James L. Thigpen, Walter G. Stiffler, James B. Keys, David T. McKinney, Sidney Bell
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Patent number: 5455079Abstract: A process for forming a hard surface coating on titanium alloys includes providing a piece of material containing titanium having at least a portion of one surface to be hardened. The piece having a portion of a surface to be hardened is contacted on the backside by a suitable heat sink such that the melting depth of said surface to be hardened may be controlled. A hardening material is then deposited as a slurry. Alternate methods of deposition include flame, arc, or plasma spraying, electrodeposition, vapor deposition, or any other deposition method known by those skilled in the art. The surface to be hardened is then selectively melted to the desired depth, dependent on the desired coating thickness, such that a molten pool is formed of the piece surface and the deposited hardening material. Upon cooling a hardened surface is formed.Type: GrantFiled: January 31, 1995Date of Patent: October 3, 1995Assignee: The United States of America as represented by the Secretary of the InteriorInventors: Laurance L. Oden, Paul C. Turner
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Patent number: 5453306Abstract: The generation of a reaction product is suppressed between a metallic substrate and plasma in depositing a ceramic intermediate layer on the metallic substrate in a process for depositing an oxide film on the metallic substrate by thermal plasma flash evaporation method. Thus, there is no reaction phase in the ceramic intermediate layer and the metallic substrate, and an intermediated buffer layer of only oxide ceramic is deposited on a flat surface of the metallic substrate. The intermediate ceramic layer is deposited in inert atmosphere of a low oxygen concentration at a temperature of less than 600.degree. C. for the metallic substrate. Then, a superconducting thin film is deposited on the ceramic intermediate layer.Type: GrantFiled: June 30, 1994Date of Patent: September 26, 1995Assignees: International Superconductivity Technology Center, Hokkaido Electric Power Co., Inc., Fujikura Ltd., Tokyo Gas Co., Ltd., Hitachi Cable, Ltd.Inventors: Noriyuki Tatsumi, Jiro Tsujino, Atsushi Kume, Yuh Shiohara, Shoji Tanaka, Shigenori Yuhya, Kei Kikuchi
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Patent number: 5437890Abstract: The present invention relates to a coating for metallurgical receptacles comprising a slurry of slag fines, lime and water. The coating has proven effective at releasing the skull remaining in metallurgical receptacles after the molten metal has been tapped off and the slag layer has been poured off. The invention also relates to a process for coating metallurgical receptacles with the coating composition of the present invention.Type: GrantFiled: April 18, 1994Date of Patent: August 1, 1995Assignee: Edw. C. Levy Co.Inventor: Mark H. Gramke
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Patent number: 5407702Abstract: A method for extrusion coating both sides of a metal strip. A metal strip, such as aluminum alloy strip, is moved through a pre-conditioner, two extrusion dies, a post heater and a cooling system. Both sides of the strip are coated with thin coatings of polyester material. The coated metal strip is useful for containers, such as cans and can ends, as well as for automobiles, appliances, aerospace, construction and electrical devices.Type: GrantFiled: May 5, 1993Date of Patent: April 18, 1995Assignee: Aluminum Company of AmericaInventors: David A. Smith, Susan A. Stanton, Gary J. DiFranco, Roy B. Steidley, John M. Stinson, Thomas L. Levendusky, Vincent J. Downard, William F. Forster, John R. McAllister
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Patent number: 5403624Abstract: A method and apparatus for coating a fastener with head and shank portions is disclosed. The invention includes the steps of and apparatus for transferring the fasteners from a feed mechanism such that the fasteners are positioned for coating. The fasteners are then conveyed through a plurality of operating stations, beginning with a heating station where the shank portions of the fasteners are heated. Subsequently, at a material applying station, a coating material is applied to the heated shank portions. A preferred embodiment of the method and apparatus of the present invention includes using a magnetic holder to carry the fasteners horizontally by their head portions, where fasteners are centered by a rotating wheel, heating the shank portion to a temperature above the melting point of the applied material and applying the material to the heated shank portion to form a coating thereon. The magnetic holders are part of an endless traveling belt that rotates continually.Type: GrantFiled: December 17, 1993Date of Patent: April 4, 1995Assignee: Nylok Fastener CorporationInventors: Anthony DiMaio, Richard J. Duffy, Eugene Sessa
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Patent number: 5393362Abstract: A method of applying a layer of exogenous inorganic oxide to a metal article which method involves heating a coating of a coupling agent for a temperature and for a time sufficient to convert the coating to a layer of exogenous inorganic oxide. Also a method of adhering a metal article to an adhesive and/or a composite and a method of adhering a metal article to a substrate.Type: GrantFiled: December 3, 1992Date of Patent: February 28, 1995Assignee: Minnesota Mining and Manufacturing CompanyInventor: Scott R. Culler
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Patent number: 5391396Abstract: The method for providing a temporary protection against corrosion of a cleaned metal product, in particular a metal sheet, comprises the following steps:applying on at least a part of the metal product an emulsion obtained by dispersion in water of 3 to 13% by volume of an oily phase comprising 75 to 90% by volume of at least one mineral oil, 5 to 10% by volume of at least one surface-active agent, and 5 to 15% by volume of at least one corrosion inhibitor,drying the coated metal product until a dry film is obtained.Type: GrantFiled: June 29, 1993Date of Patent: February 21, 1995Assignee: SollacInventor: Claude Morrand
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Patent number: 5385760Abstract: A process for the production of structural parts or substrates with composite coatings by electrolytic or electroless deposition of a metal matrix in which the structural part or substrate surface is first coated with a mixture of a water-soluble powder of salt or acid and dispersed particles, fibers, felt, mat or woven fabric. Then the salt or the acid is melted and transformed to a water-soluble substance which fixes the particles, fibers, felt, mat or woven fabric to the surface of the structural part or substrate. The water-soluble substance is dissolved by immersing the structural part or substrate in an electrolytic or electroless deposition bath, and a metal matrix is deposited onto the structural part or substrate to incorporate the dispersed particles, fibers, felt, mat or woven fabrics in the matrix as a composite coating.Type: GrantFiled: December 6, 1993Date of Patent: January 31, 1995Assignee: MTU Motoren- und Turbinen-Union Munchen GmbHInventors: Wolfgang Schassberger, Monika Manier, Martin Thoma
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Patent number: 5376411Abstract: A heat exchanger is immersed in a hydrophilic-film-forming solution in order to form a hydrophilic film on the surface of the heat exchanger. The film applied on the heat exchanger is then dried to a semi-dry state and while this film is semi-dry, an antimicrobial agent is permeated into the hydrophilic film. Then it is completely dried. By following this process, it is possible to permeate a large amount of antimicrobial agent near the surface of the film, increasing the antimicrobial effect and at the same time, the effect is retained over a long period of time because the antimicrobial agent is not coated on the surface and, therefore, is not washed away with water.Type: GrantFiled: September 14, 1993Date of Patent: December 27, 1994Assignee: Zexel CorporationInventor: Kunihiko Nishishita
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Patent number: 5344696Abstract: A laminate coating comprising a durable outer ply which is resistant to abrasion and impermeable to water, bonded to and through a conductive layer of fibers and an integrally enveloping adhesive layer which is disposed on a vehicle component surface, such that the laminate coating upon curing is bonded to the vehicle component surface such as the surface of an aircraft part especially the fuselage, wing parts or tail section. The conductive layer is connected to a source of electrical energy and control means adapted to control the temperature of the coated surface of the aircraft part.Type: GrantFiled: March 12, 1992Date of Patent: September 6, 1994Inventors: Otis H. Hastings, Otis M. Hastings
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Patent number: 5336526Abstract: In an on-line annealing process for rigid laminated sheets of reinforced thermoplastic material wherein an annealing chamber is maintained at a desired temperature by introducing heated air to impinge on a deflection plate within the annealing chamber, annealing of the thermoplastic sheets is improved by introducing heated air through a pair of elongated perforated tubes within the annealing chamber so that heated air is diffused so as to flow evenly across both sides of the rigid thermoplastic sheet as the sheet passes through the annealing chamber.Type: GrantFiled: April 12, 1991Date of Patent: August 9, 1994Assignee: Phillips Petroleum CompanyInventors: Kevin J. Spoo, Roy G. Thompson
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Patent number: 5312650Abstract: The method of making a composite article of different metal portions by spraying molten metal on the surface of a solid metal member that has been cleaned and preheated in a controlled atmosphere at low pressure. The molten metal is sprayed on the surface of the solid metal member, preferably by plasma jet spraying. It is rapidly solidified to be adherent to the surface of the solid metal member to form a composite preform. The composite preform is cooled at a rate sufficiently low to reduce residual stresses and then hot pressed to eliminate voids in the sprayed metal portion and metallurgically bonded to the surface of the solid member.Type: GrantFiled: January 12, 1988Date of Patent: May 17, 1994Assignee: Howmet CorporationInventors: Ranes P. Dalal, John M. McFadden, Mark J. Straszheim, Louis E. Dardi
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Patent number: 5306531Abstract: A process and apparatus is disclosed for the fabrication of press plates hardened by the use of plasma ion nitriding techniques to produce wear resistant decorative laminate containing alumina grit while improving associated press plate useful life. The application of this process to press plates having exacting final microfinish requirements is possible due to the determination of interdependancies between parameter settings and expected results. These interdependancies include the work piece geometry, surface and subsurface structure and desired results, process temperatures, pressures, and duration of heat-up time, thermal loading, reflective radiation and heat effects, cooling systems, and gas mixture composition.Type: GrantFiled: March 30, 1993Date of Patent: April 26, 1994Assignee: Formica Technology, Inc.Inventors: Kenneth J. Laurence, Wolfgang Kieferle
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Patent number: 5298295Abstract: A process for depositing a film of metal chalcogenide is disclosed. The process comprises providing a single source of a metal chalcogenide and heating said source to a temperature sufficient to sublime the single source under a pressure ranging from 0.0001 to 760 torr so that the sublimate is delivered into a reaction zone. Within this reaction zone, a substrate is deposed upon which deposition may occur. The reaction zone is heated to approximately 200.degree. to 800.degree. C. The sublimate is passed through this reaction zone and over the substrate to produce a thin film of metal chalcogenide which is deposited upon the substrate.Type: GrantFiled: April 8, 1992Date of Patent: March 29, 1994Assignee: Wayne State UniversityInventors: Charles H. Winter, T. Suren Lewkebandara
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Patent number: 5291670Abstract: A process for baking electrically conductive wires clad in insulating plastics resin, comprising a first, evaporation stage for evaporation of solvents and a second resin polymerization and cross-linking stage, which are performed respectively in a first and in a second region of a tunnel chamber in a continuous oven between the inlet regions and outlet regions of which the wires advance, a third stage comprising aspiration from the oven of a mixture of air and solvents formed during the first evaporation stage, and a fourth stage comprising heating this mixture to a predetermined temperature such as to cause combustion of the solvents, and including a fifth stage of introducing heat energy to these regions of the oven from at least part of the stream of air and combustion products coming from the fourth stage, through heat exchangers disposed on the outer surface of this tunnel chamber, in such a way as significantly to reduce the introduction of heat energy provided to the chamber by heating means suppliedType: GrantFiled: August 29, 1991Date of Patent: March 8, 1994Assignee: S.I.C.M.E. S.p.A. Societa Industriale Costruzioni MicroelettricheInventors: Renato Surra, Bruno Bronzini, Michele Ricco
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Patent number: 5290588Abstract: An improved process is provided for forming a multilayer structure (18) suitable for tape automated bonding thereto or for forming contacts. In the process, a first layer (12) of aluminum is formed on a substrate (10), a second layer (14) of a TiW alloy is formed on the first layer of aluminum, and a third layer (16) of gold is formed on the second layer of the TiW alloy, to which third layer of gold bonding is done. The improvement comprises annealing the second layer of the TiW alloy in an inert atmosphere at a temperature less than about 500.degree. C. for a period of time sufficient to form a film of an Al--TiW phase (20), believed to comprise TiAl.sub.3, at the interface between the first layer of aluminum and the second layer of the TiW alloy. The annealing is done prior to forming the third layer of gold on the second layer of the TiW alloy.Type: GrantFiled: December 19, 1991Date of Patent: March 1, 1994Assignee: Advanced Micro Devices, IncorporatedInventors: Jeremias D. Romero, Homi Fatemi, Eugene A. Delenia, Muhib M. Khan
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Patent number: 5283030Abstract: A coated cemented carbide alloy, excellent in toughness as well as wear resistance and which is used for cutting tools and wear resistance tools is provided herein. This coated cemented carbide alloy is composed of a cemented carbide substrate consisting of a hard phase of at least one member selected from carbides, nitrides and carbonitrides of the Group IVb, Vb and VIb metals of Periodic Table and a binder phase consisting of at least one member selected from the iron group metals, and a monolayer or multilayer provided on the substrate consisting of at least one member selected from the carbides, nitrides, oxides and borides of Group IVb, Vb and VIb metals of Periodic Table, solid solutions thereof and aluminum oxide, and wherein a binder phase-enriched layer is provided in a space 0.01 mm and 2 mm below the surface of the substrate with A-type and/or B-type pores inside the binder phase-enriched layer.Type: GrantFiled: October 7, 1992Date of Patent: February 1, 1994Assignee: Sumitomo Electric Industries, Ltd.Inventors: Minoru Nakano, Toshio Nomura
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Patent number: 5281435Abstract: A metal strip (4) is continuously coated with a thermoset resin based paint by passing it through a pre-heating furnace (5) wherein it is raised to a pre-heat temperature of from 100.degree. to 210.degree. C., then through a coating applicator (6) wherein a solid, substantially solvent free block (11) of the paint composition is pressed against the strip (4) at a substantially constant pressure of from 10 to 100 kilopascals to cause a liquid layer (13) of the paint composition to be deposited on the strip, then through a roll type smoothing device (18) to smooth and spread the layer and doctor it to thickness, then through a curing furnace (8) to thermoset the layer, and finally through a quenching bath (9).Type: GrantFiled: January 10, 1992Date of Patent: January 25, 1994Assignees: John Lysaght (Australia) Limited, Taubmans Property LimitedInventor: Udo W. Buecher
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Patent number: 5277637Abstract: A cathode having a short heating time and a long lifetime for an electric discharge tube is provided. The cathode comprises a metal (particularly nickel) support base coated with a layer of potentially electron-emissive material, which support base has a thickness ranging between 20 and 150 .mu.m, while the metal crystallites have a size which does not permit of any further crystallite growth or recrystallization. Particularly, the crystallites of the support base have a size which corresponds to the thickness of the support base. The cathode is obtained by a method in which the recrystallization thermal treatment is effective to prevent additions in the metal of the support base from forming oxides to a depth which is further than 1 micrometer from the surface.Type: GrantFiled: July 2, 1992Date of Patent: January 11, 1994Assignee: U.S. Philips CorporationInventor: Petrus J. A. M. Derks
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Patent number: 5262197Abstract: A method of making a reusable, self-sealing threaded fastener having an integral seal and which does not require additional curing or heating after installation is disclosed. The sealant is a soft pliable olefin based material designed to flow between the bearing shoulder and threads of the fastener, and the abutting bearing surface of a receptacle as the fastener is tighted into the receptacle thereby creating a tight seal.Type: GrantFiled: March 24, 1992Date of Patent: November 16, 1993Assignee: Nylok Fastener CorporationInventor: Mario Pollizzi
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Patent number: 5252362Abstract: A method is taught for protecting the surface of a metal subject to hydrogen embrittlement from hydrogen absorption. An adherent coating is formed on the surface of the metal substrate by heating the substrate, applying thereto a colloidal alumina suspension in a vaporizable carrier, and further heating said substrate and applied alumina suspension at an elevated temperature to form a protective alumina coating. Dopants may be employed to increase the inhibition of hydrogen diffusion through the alumina coating.Type: GrantFiled: July 19, 1991Date of Patent: October 12, 1993Inventors: Abdus S. Khan, Robert J. Wright
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Patent number: 5232746Abstract: Metallic substrates or substrates metallized at at least one surface are electrostatically powder coated with fluorinated polymers processable from the melt in admixture with 0.1 to 4% by weight of potassium titanate fibers.Type: GrantFiled: December 17, 1990Date of Patent: August 3, 1993Assignee: Hoechst AGInventors: Hermann Bladel, Hans-Jurgen Hendriock
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Patent number: 5232737Abstract: A process for preparing an insulated metal wire with a melt-coated, adherent sheath of a polymer consisting essentially of the following repeat units: ##STR1## wherein n is 4 or 5; X is from 0.01 to 0.50; and Ar is at least one divalent aromatic radical selected from the group consisting of 1,3-phenylene, 1-methyl-2,4-phenylene and 3,4'-oxydiphenylene, comprising heating the bare wire to a temperature in excess of the Tg of the polymer and melt-coating the wire with the polymer. This produces an insulated wire that is stable to high temperatures and is resistant to water crazing, cracking and loss of coating.Type: GrantFiled: November 9, 1992Date of Patent: August 3, 1993Assignee: E. I. Du Pont de Nemours and CompanyInventors: Hamid M. Ghorashi, John C. Norman
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Patent number: 5230929Abstract: The present invention refers to coatings produced by means of the deposit of thin films formed by plasma-activated chemical vapor deposition of volatile fluoridated cyclic siloxanes having the structure [RR'SiO].sub.x, where R is an alkyl group with 1-6 carbon atoms, R' is a fluorinated alkyl group with 3-10 carbon atoms, the carbon in the alpha and beta positions with respect to the silicon atom is hydrogenated and x is 3 or 4. These particular coatings are useful because of their properties of protection and insulation.Type: GrantFiled: July 20, 1992Date of Patent: July 27, 1993Assignee: Dow Corning CorporationInventors: Gerardo Caporiccio, Riccardo D'Agostino, Pietro Favia
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Patent number: 5208077Abstract: A composite material, particularly useful for prestressing concrete and in stay cables for cable-stayed bridges and other such uses where strength, corrosion resistance and resistance to fatigue failure are particularly important, comprises high strength wire strand coated and impregnated with an impermeable and strongly adherent epoxy based resin. The impregnated and coated epoxy increases the flexural stiffness of the composite against bending fatigue in the areas of the anchorages in dynamically loaded situations and reduces relative movement and rubbing of the wires of the strand so as to reduce fretting and hence fretting fatigue, the principal mechanism for failure in dynamically loaded strand.Type: GrantFiled: November 9, 1990Date of Patent: May 4, 1993Assignee: Florida Wire and Cable CompanyInventors: Dale D. Proctor, Denny M. Bucy, R. Terry Johnson, Michael R. Bradley
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Patent number: 5208073Abstract: In this invention, a method of manufacturing a colored metallic sheet comprises steps of holding a surface to be painted of metallic plates 10 in a fluorine- or fluoride-containing atmosphere in a heated condition to form a fluorided layer on the surface to be painted, removing the formed fluorided layer on the surface just before painting the surface to expose a metallic base, and painting the exposed metallic base surface.Type: GrantFiled: October 2, 1991Date of Patent: May 4, 1993Assignee: Daidousanso Co., Ltd.Inventor: Akira Yoshino
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Patent number: 5194301Abstract: The present invention refers to a process for inhibiting the formation of polymer buildup on the inner surfaces of a vinyl polymerization reactor by coating such surfaces with an alkaline solution of a linear or branched low molecular weight compound belonging to the poly(hydroxybenzyl) and poly(hydroxybenzylether) families and including their copolymers or blends. This process effectively reduces the adherence of polymeric material to the inner parts of the reaction vessel wherein substituted ethylene monomers are polymerized.Type: GrantFiled: November 20, 1991Date of Patent: March 16, 1993Assignee: Investigacion y Desarrollo, C.A.Inventors: Neida C. Boscan-Romero, Jose L. Corcuera-Casas, Edgar R. Gonzalez-Acevedo, Enrique J. Millan-Barrios, Rafael A. Quintero-Arcaya
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Patent number: 5190795Abstract: A method of applying a layer of exogenous inorganic oxide to a metal article which method involves heating a coating of a coupling agent for a temperature and for a time sufficient to convert the coating to a layer of exogenous inorganic oxide. Also a method of adhering a metal article to an adhesive and/or a composite and a method of adhering a metal article to a substrate.Type: GrantFiled: February 11, 1991Date of Patent: March 2, 1993Assignee: Minnesota Mining and Manufacturing CompanyInventor: Scott R. Culler
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Patent number: 5186981Abstract: A coated roller for transportation and stretching of plastic film web during load unitization, and a process for preparation of the coated roller. A cylindrical metallic roller core is pitted by blasting, then primed, heated and immersed in a room-temperature liquid plastisol comprising vinyl particles dissolved in a plasticizer. The plastisol accumulates on the hot metal to a depth determined by immersion time. After removal, curing and cooling the coated core is machined by lathe to expose a cellular infrastructure and achieve a cylindrical coating coaxial with the core. The coated roller exhibits superior durability, resistance to tackifier additive buildup, and resistance to circumferential web slippage during web stretch between two rollers in a film path from a supply roll to a load being wrapped.Type: GrantFiled: December 22, 1988Date of Patent: February 16, 1993Assignee: Lantech, Inc.Inventors: Terry M. Shellhamer, James C. Ward, David M. Edwards
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Patent number: 5178915Abstract: Coating composition especially useful for high gloss coating of untreated, bright, sealed, anodized metal substrates, particularly coils of such metal, comprises a catalyst-free composition comprising a high gloss, thermosetting, hydroxyl group-containing fluorocarbon polymer, a cross-linking agent comprising a blocked aliphatic polyisocyanate, a partially self-condensing, highly methylated melamine-formaldehyde resin or a mixture of the blocked polyisocyanate and melamine-formaldehyde resin, butanol solvent, an ultraviolet screening agent, an ultraviolet stabilizer acting as free radical scavenger, and optionally one or more of the following components: polysiloxane slip and flow and defoaming agents, a high boiling solvent distilling at a temperature of about 195.degree. C. or above to modify the viscosity of the composition and an amine active as an inhibitor for residual acid in the fluoropolymer.Type: GrantFiled: January 10, 1992Date of Patent: January 12, 1993Assignee: Morton International, Inc.Inventors: Richard T. Moyle, Jeffrey N. Soltwedel
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Patent number: 5178902Abstract: Two methods are provided for applying and forming a protective composite coating on a metallic substrate. In the first method, the substrate is heated to a temperature between about 175.degree. C. and 275.degree. C. and a powdered coating of epoxy resin between 100 and 400 microns thick is applied to the outer surface of the heated substrate. A premixed powder coating of epoxy resin and polyolefin is applied directly onto the epoxy resin coating, forming an interlayer of interspersed domains of epoxy and polyolefin between about 100 and 400 microns in thickness. On to this, powdered polyolefin is sprayed to produce a polyolefin sheath coating for the metallic substrate between 200 and 1000 microns in thickness. In the second embodiment of the method, the interlayer is formed by spraying pure epoxy resin powder and polyolefin powder from separate sources simultaneously onto the substrate. By these methods, a metallic substrate coated with a composite epoxy/polyolefin protective coating is produced.Type: GrantFiled: August 7, 1991Date of Patent: January 12, 1993Assignee: Shaw Industries Ltd.Inventors: Dennis Wong, Jiri Holub, Joseph G. Mordarski
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Patent number: 5169621Abstract: A method and apparatus for coating a fastener with head and shank portions is disclosed. The invention includes the steps of and apparatus for transferring the fasteners from a feed mechanism such that the fasteners are positioned for coating. The fasteners are then conveyed through a plurality of operating stations, beginning with a heating station where the shank portions of the fasteners are heated. Subsequently, at a material applying station, a coating material is applied to the heated shank portions. A preferred embodiment of the method and apparatus of the present invention includes using a magnetic holder to carry the fasteners horizontally by their head portions, heating the shank portion to a temperature above the melting point of the applied material and applying the material to the heated shank portion to form a coating thereon. The magnetic holders are part of an endless traveling belt that rotates continually. The fastener carriers have teeth that engage a rack to rotate the fasteners.Type: GrantFiled: September 16, 1991Date of Patent: December 8, 1992Assignee: Nylok Fastener CorporationInventors: Anthony DiMaio, Richard J. Duffy, Eugene Sessa
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Patent number: 5141683Abstract: A method is described for the production of a porous ceramic body and the subsequent infiltration of the body with a molten metal to produce an article having a reinforced metallic matrix. The article may be further worked by known techniques such as extrusion or forging, for example.Type: GrantFiled: January 19, 1990Date of Patent: August 25, 1992Assignee: T&N Technology LimitedInventors: Christopher P. Hyndman, Gordon L. Allen
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Patent number: 5139823Abstract: The present invention refers to a process for the preparation of a scale inhibiting solution that consists of: a) a low molecular weight compound belonging to the families of the polyhydroxybenzyls, polyhydroxyarylethers, its copolymers or blends b) an alkali and c) a strong electrolyte, which is used to coat the internal surfaces of polymerization reactors. This scale inhibiting solution reduces effectively the adherence of polymeric material to the inner parts of the reaction vessel when monomers such as vinylics, vinylidenes, acrylics, methacrylics, vinylaromatics, diolefins and their mixtures are polymerized via suspension, microsuspension, dispersion or emulsion.Type: GrantFiled: August 9, 1990Date of Patent: August 18, 1992Assignee: Investigacion y Desarrollo C.A.Inventors: Neida C. Boscan-Romero, Jose L. Corcuera-Casas, Edgar R. Gonzalez-Acevedo, Enrique J. Millan-Barrios, Rafael A. Qintero-Arcaya
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Patent number: 5135775Abstract: The invention provides a process for cleaning and subsequent coating of metal surfaces of substrates. The metal surfaces are cleaned with a microwave-excited plasma using oxygen and hydrogen, alternately, as a working gas. The cleaned metal surface is coated by physical vapor deposition (PVD) or plasma enhanced chemical vapor deposition (PECVD).Type: GrantFiled: November 1, 1991Date of Patent: August 4, 1992Assignee: Thyssen Edelstalhwerke AGInventors: Michael Foller, Carl-Stefan Thone
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Patent number: 5128175Abstract: A process for producing an insulated electric wire, comprising the steps of coating around a conductor an energy radiation curable resin composition having heat expansible microspheres incorporated therein, and curing the energy radiation curable resin composition thus coated on the conductor by exposure to an energy radiation. The process also comprises the step of heating the energy radiation curable resin composition to expand the heat expansible microspheres in the energy radiaiton curable resin composition, thereby forming a high-porosity insulation layer on the conductor. An insulated electric wire comprises a conductor; an energy radiation curable resin composition layer having microspheres incorporated therein and surrounding the conductor, the outside diameter of the microspheres in the energy radiation curable resin composition layer being maximum in the vicinity of the conductor and decreasing gradually toward the periphery of the energy radiation curable resin composition layer.Type: GrantFiled: March 13, 1990Date of Patent: July 7, 1992Assignee: Sumitomo Electric Industries, Ltd.Inventors: Toru Yamanishi, Tatsuya Kakuta, Akinori Mori