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...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 8172957 | Method of manufacturing carburized parts To provide a method of manufacturing a carburized part contributable to cost reduction, a portion intended for a non-carburizing portion is treated to a surface roughness corresponding to Rz 50 like a first work surface and a portion intended for a carburizing porti... | 05/08/2012 |
| 7811390 | Method for producing carburized parts A method for producing a carburized part by carburizing a steel member under a vacuum in a decompression furnace while feeding carburizing gas comprises a step for forming an oxide film on at least a part of a surface of the steel member, a step for generating carbo... | 10/12/2010 |
| 7264682 | Titanium boride coatings on titanium surfaces and associated methods A borided titanium article can include a titanium mass having titanium monoboride whiskers infiltrating inward from a surface of the titanium mass to form an integral surface hardened region. The titanium mass can be almost any titanium based metal or alloy such as ... | 09/04/2007 |
| 7181945 | Semi-manufacture pulley forming apparatus A pulley is made by fixing an edge of an opening of a plate by using a first upper mandrel ring installed at a lower end of a first supporting pin of a first forming device. A supporting block disposed around an upper end of a first spindle is rotated with the first... | 02/27/2007 |
| 6982120 | Hardened steel components and process of treating the same The invention relates to components made of steel, more particularly outer joint parts and inner joint parts of constant velocity joints, and to a process of heat treating such components made of steel. The heat treatment operation includes the process stages of nit... | 01/03/2006 |
| 6964712 | Hardening protection compositions for partial carburization of metallic components Hardening protection compositions based on substances which form boron glass for partial carburization of metallic components, which contain magnesium-silicon compounds as an additive. These hardening protection compositions can be used very advantageously in proces... | 11/15/2005 |
| 6919942 | Display apparatus A display apparatus according to the present invention is provided with a gate line 2 formed on an insulating substrate, a source line 13 intersecting with the gate line 2 with an insulating film in between, a source electrode 6 connected... | 07/19/2005 |
| 6605160 | Repair of coatings and surfaces using reactive metals coating processes This invention pertains to the repair of parts comprising metals, and surfaces and coatings of these parts using reactive metals coating processes. Processes such as chemical vapor deposition (CVD), physical vapor deposition (PVD), plasma spray, and react... | 08/12/2003 |
| 6552280 | Surface-hardened austenitic stainless steel precision weight and process of making same A precision weight (1) has greater permanence of mass due to a hardened surface layer that provides greater wear and scratch resistance as well as greater corrosion resistance. The hardened surface layer is a diffusion layer of increased carbon and/or nit... | 04/22/2003 |
| 6458220 | Case hardened steel blades for sports equipment and method of manufacture Steel alloys susceptible to case and core hardening comprise 0.05 to 0.24 weight percent carbon; 15 to 28 weight percent cobalt and 1.5 to 9.5 weight percent in nickel, small percentages of one or more additives: chromium, molybdenum, and vanadium; and th... | 10/01/2002 |
| 6302971 | Process for making moveable pulley half A pulley useable with a driving belt in a continuously variable transmission, including a moveable pulley half having an integral cylinder portion integrally formed therewith by plastic working. The moveable pulley half includes an axially extending hollo... | 10/16/2001 |
| 5910223 | Steel article having high hardness and improved toughness and process for forming the article A steel article is formed of a steel material containing from about 0.08 to about 0.35 carbon and is characterized by having a plurality of carbides dispersed on at least one pre-selected surface area of the article, with the surface carbides being disper... | 06/08/1999 |
| 5669988 | Corrugating roll and manufacturing method thereof Object: Prevention of generation of press marks as well as increase of wear resistance at a corrugation tip portion and thereby providing a corrugating roll having a much improved life. Construction: A manufacturing method of a corrugating roll useful for ... | 09/23/1997 |
| 5573604 | Process for manufacturing a turbine blade made of an (alpha/beta)-titanium base alloy The process serves for the manufacture of an erosion-resistant turbine blade which is preferably used in the low-pressure stage of a steam turbine and is made of a vanadium-containing (/ଲ)-titanium base alloy. This involves the formation, by ... | 11/12/1996 |
| 5571341 | Thermochemical treatment of thin-walled structural steel elements A process for the thermochemical treatment of thin-walled structural elements made of steel comprising enriching an edge zone of a thin-walled structural element with nitrogen and carbon at 590° to 700° C. to harden the edge zone whereby an intermediate... | 11/05/1996 |
| 5498299 | Process for avoiding surface oxidation in the carburization of steels The surface oxidation under carburization temperatures of steels during the carburization with carbon-containing gas mixtures is avoided by heating the steels to the carburization temperature under a nitrogen/hydrogen mixture or pure hydrogen. For carburi... | 03/12/1996 |
| 5342455 | In-situ generation of heat treating atmospheres using a mixture of non-cryogenically produced nitrogen and a hydrocarbon gas A process for generating in-situ low-cost atmospheres suitable for annealing and heat treating ferrous and non-ferrous metals and alloys, brazing metals, sealing glass to metals, and sintering metal and ceramic powders in a continuous furnace from non-cry... | 08/30/1994 |
| 5272015 | Wear resistant hyper-eutectic aluminum-silicon alloys having surface implanted wear resistant particles Hyper-eutectic aluminum-silicon alloys are surface treated with nitrogen and carbon by ion implantation means so as to form hard, wear resistant particles of silicon nitride and silicon carbide which are surrounded by a hard matrix of aluminum nitride and... | 12/21/1993 |
| 5259893 | In-situ generation of heat treating atmospheres using a mixture of non-cryogenically produced nitrogen and a hydrocarbon gas A process for generating in-situ low-cost atmospheres suitable for annealing and heat treating ferrous and non-ferrous metals and alloys, brazing metals, sealing glass to metals, and sintering metal and ceramic powders in a continuous furnace from non-cry... | 11/09/1993 |
| 5221369 | In-situ generation of heat treating atmospheres using non-cryogenically produced nitrogen A process for generating in-situ low-cost atmospheres suitable for annealing and heat treating ferrous and non-ferrous metals and alloys, brazing metals and ceramics, sealing glass to metals, and sintering metal and ceramic powders in a continuous furnace... | 06/22/1993 |
| 5131585 | Method for brazing with simultaneous carburization A ferric article is brazed by a copper solder at a temperature of or higher than 1,100° C. in a heat-treatment furnace, parts of the article which are desired to be carburized, are carburized simultaneously with the brazing by covering with organic mater... | 07/21/1992 |
| 5039357 | Method for nitriding and nitrocarburizing rifle barrels in a fluidized bed furnace A method for nitriding and nitrocarburizing the bores of rifle barrels or similar elongated hollow objects in which a funnel is attached to the inlet end of each of rifle barrel prior to treatment. The rifle barrels are then loaded into a fluidized bed fu... | 08/13/1991 |
| 4858294 | Method of producing an object, in particular a rolling bearing, consisting of at least two moving parts locked into each other A method of producing an object of at least two parts movable relative to each other, one of which parts is essentially locked inside the other, and wherein a rolling bearing is disposed, between the two parts in races, which includes at least one row of ... | 08/22/1989 |
| 4554217 | Process for creating wear and corrosion resistant film for magnetic recording media A process for forming a magnetic recording member composed of a substrate, a magnetic film, and a protective layer. The magnetic film is deposited on the substrate by means of DC or RF sputtering and electron beam vacuum deposition in a partial pressure o... | 11/19/1985 |
| 4358046 | Oriented graphite layer and formation An oriented graphite layer is formed on a metallic substrate by providing a coating of particulate carbon thereon, heating the coated substrate in a non-reactive atmosphere to a temperature of between 800° and 1350° C. for saturational diffusion of carb... | 11/09/1982 |
| 4035204 | Method of carburizing the inner surface of a steel valve seat To carburize the inner surface of hollow, narrow work pieces, such as valve seats in blind bores, and avoid the use of salt baths which have residues containing Prussic acid, a mandrel is made fitting with little clearance in the order of 0.1 mm into the ... | 07/12/1977 |
| 4018631 | Coated cemented carbide product Improved adherence of oxide coatings on cemented carbide substrate containing tungsten and cobalt is attained by forming on the substrate a coating selected from carbide, nitride, carbonitride and mixtures thereof, diffusing tungsten and cobalt from the s... | 04/19/1977 |
| 3964937 | Method of making a composite coating Disclosed is a composite coating for wear surfaces comprising a layer of vapor deposited titanium nitride overlying a layer of titanium carbide. The composite coating is formed by successive chemical vapor depositions of titanium carbide and titanium nitr... | 06/22/1976 |
| 3944443 | Ultra high temperature chemical reactions with metals A method for treating metals and metal surfaces is disclosed. The method includes the use of a plasma gas generated by an induction plasma system. In one embodiment, a cutting tool, such as a saw blade or razor blade is passed into contact with the plasma... | 03/16/1976 |
