Elemental Or Alloyed Metal Patents (Class 508/103)
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Publication number: 20040242432Abstract: A friction material made of a molded and cured composition containing a fibrous base, a binder and a filler includes a specific amount of at least three substances of mutually differing melting points selected from the group consisting of metallic tin, tin alloys and tin compounds. Such friction materials greatly diminish mating surface attack.Type: ApplicationFiled: May 27, 2004Publication date: December 2, 2004Inventors: Seiji Suzuki, Yasuki Hattori, Kazuhide Yamamoto
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Publication number: 20040180796Abstract: An object of the present invention is to provide a sliding member which can slide for a longer period of time even in a dry state. In the present invention, the sliding member is provided with a sliding layer 3 containing 1 to 20 vol % of bismuth powder and/or bismuth alloy powder, 20 to 60 vol % of metal powder, and 1 to 20 vol % of a solid lubricant, the sum thereof being not more than 70 vol %, and the balance being a thermosetting resin. Therefore, a large quantity of metal powder and bismuth powder and/or bismuth alloy powder are mixed with the thermosetting resin in the sliding layer 3, so that the thermal conductivity in the sliding layer 3 is improved, and hence heat does not accumulate in a sliding layer portion, by which seizure can be prevented.Type: ApplicationFiled: March 10, 2004Publication date: September 16, 2004Applicant: Daido Metal Company Ltd.Inventors: Hideki Iwata, Takeshi Shindo, Kotaro Kashiyama
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Publication number: 20040157750Abstract: A composite anti-friction bearing structure comprising a bearing substrate and an anti-friction layer. The bearing structure can be in the form of bushings, wear plates, wear rings, etc. The anti-friction layer includes particles of an alloy which combines lubricity of molybdenum with the wear resistance and corrosion resistance of elements such as cobalt and nickel. The invention is particularly related to anti-friction bushings for use in die sets, presses and other heavy duty machinery.Type: ApplicationFiled: February 4, 2004Publication date: August 12, 2004Inventors: James C. Danly, James C. Danly
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Patent number: 6767870Abstract: A solid lubricant bar for use in high temperature environments, such as rotary kilns, comprising an organo phosphate, such as triphenyl phosphate, a solid lubricant selected from the group comprising graphite, molybdenum, boron, boron nitride, tungsten, polytetrafluoroethylene, and mixtures thereof; and a soft metal selected from the group consisting of copper, aluminum, tin and mixtures thereof. The solid lubricant bar has an auto-ignition temperature of at least about 1,000 degrees Fahrenheit (537 degrees Celsius).Type: GrantFiled: July 18, 2002Date of Patent: July 27, 2004Assignee: C&C Oil CompanyInventor: Alan C. Lockett, Sr.
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Patent number: 6734147Abstract: A process is disclosed for manufacturing a lubricant composition comprising combining a superabsorbent polymer with a material for decreasing friction between moving surfaces. The superabsorbent polymer absorbs from about 25 to greater than 100 times its weight in water and may comprise a polymer of acrylic acid, an acrylic ester, acrylonitrile or acrylamide, including co-polymers thereof or starch graft co-polymers thereof or mixtures thereof. A product produced by the process includes the material for decreasing friction comprising a petroleum lubricant containing an additive, water containing an additive, synthetic lubricant, grease, solid lubricant or metal working lubricant, wherein the synthetic lubricant, grease, solid lubricant or metal working lubricant optionally contain an additive. A process comprising controlling the delivery of a lubricant to at least one of two moving surfaces in order to decrease friction between said moving surfaces, is also disclosed.Type: GrantFiled: October 3, 1997Date of Patent: May 11, 2004Assignee: LCC County Mosquito ControlInventor: Richard Levy
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Patent number: 6710020Abstract: The present invention provides a new composite material comprising a porous matrix made of metal, metal alloy or semiconducting material and hollow fullerene-like nanoparticles of a metal chalcogenide compound or mixture of such compounds. The composite material is characterized by having a porosity between about 10% and about 40%. The amount of the hallow nanoparticles in the composite material is 1-20 wt. %.Type: GrantFiled: December 19, 2002Date of Patent: March 23, 2004Assignees: Yeda Research and Development Co. Ltd., Holon Academic Institute of TechnologyInventors: Reshef Tenne, Lev Rapoport, Mark Lvovsky, Yishay Feldman, Volf Leshchinsky
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Publication number: 20040014610Abstract: A solid lubricant bar for use in high temperature environments, such as rotary kilns, comprising an organo phosphate, such as triphenyl phosphate, a solid lubricant selected from the group comprising graphite, molybdenum, boron, boron nitride, tungsten, polytetrafluoroethylene, and mixtures thereof; and a soft metal selected from the group consisting of copper, aluminum, tin and mixtures thereof. The solid lubricant bar has an auto-ignition temperature of at least about 1,000 degrees Fahrenheit (537 degrees Celsius).Type: ApplicationFiled: July 18, 2002Publication date: January 22, 2004Applicant: C&C Oil Company, Inc.Inventor: Alan C. Lockett
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Publication number: 20030207769Abstract: A bi-metal aluminum bearing includes an aluminum-based bearing layer, a steel backing, and an intermediate aluminum-based layer that has a thickness of from 60 to 120 micrometers positioned between the aluminum-based bearing layer and the steel backing. The intermediate layer has a yield strength that is less than that of the aluminum-based bearing layer and is preferably of pure aluminum. The aluminum-based bearing layer has a fine microstructure which imparts a very high level of conformability while retaining good fatigue strength. The aluminum bearing layer generally includes 4% to 20% by weight lead or tin, up to 26% by weight silicon and up to 2% by weight of any of the elements magnesium, manganese, nickel, zirconium, zinc, copper, or chromium with the remainder of the bearing layer being aluminum.Type: ApplicationFiled: April 4, 2003Publication date: November 6, 2003Inventors: Warren J. Whitney, Jeffrey C. Hunter
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Patent number: 6613721Abstract: A colloidal suspension has a metal core surrounded by a surfactant. The colloidal suspension is about 0.5 micron to about 3-4 microns in diameter. The colloidal suspension acts as a lubricant and protects surfaces in rolling and/or sliding contact. When mixed with a lubricant, the colloidal suspension increases the operating life of the lubricated item. The colloidal suspension preferably is tin or bismuth nano-phase particles encased in a surfactant, preferably oleyl sarcosinate, N-coco sarcosinate, sodium sulfonate, petroleum sulfonate, or octadecenyl amine.Type: GrantFiled: March 27, 1997Date of Patent: September 2, 2003Assignee: The Timken CompanyInventors: Carl F. Kernizan, James R. Spence
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Publication number: 20030144155Abstract: The present invention provides a new composite material comprising a porous matrix made of metal, metal alloy or semiconducting material and hollow fullerene-like nanoparticles of a metal chalcogenide compound or mixture of such compounds. The composite material is characterized by having a porosity between about 10% and about 40%. The amount of the hallow nanoparticles in the composite material is 1-20 wt. %.Type: ApplicationFiled: December 19, 2002Publication date: July 31, 2003Inventors: Reshef Tenne, Lev Rapoport, Mark Lvovsky, Yishay Feldman, Volf Leshchinsky
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Patent number: 6596671Abstract: A bi-metal aluminum includes bearing an aluminum-based bearing layer, a steel backing, and an intermediate aluminum-based layer that has a thickness of from 60 to 120 micrometers positioned between the aluminum-based bearing layer and the steel backing. The intermediate layer has a yield strength that is less than that of the aluminum-based bearing layer. The aluminum-based bearing layer has a fine microstructure which imparts a very high fatigue strength. The aluminum bearing layer generally includes 4% to 15% by weight lead or tin, up to 26% by weight silicon and up to 2% by weight of any of the elements magnesium, manganese, nickel, zirconium, zinc, copper, or chromium with the remainder of the bearing layer being aluminum.Type: GrantFiled: November 14, 2001Date of Patent: July 22, 2003Assignee: Federal-Mogul World Wide, Inc.Inventors: Warren J. Whitney, Jr., Jeffrey C. Hunter
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Patent number: 6511945Abstract: The invention concerns new lubricants comprising a combination of a polyethylene oxide and an oligomer amide and an improved metallurgical powder composition comprising a major amount of an iron-based powder and a minor amount of this new lubricant. Furthermore, the invention concerns a method requiring low ejection force and low ejection energy for producing green products having high green strength. The method comprises the steps of mixing an iron-based powder and optional additives with the new lubricant and compacting the obtained powder composition.Type: GrantFiled: January 17, 2002Date of Patent: January 28, 2003Assignee: Höganäs ABInventor: Maria Ramstedt
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Patent number: 6498127Abstract: Disclosed is a composite sliding material consisting of a back metal, a porous alloy layer which is formed on the surface of the back metal by sintering a copper alloy powder, and a resin layer which is formed so as to impregnate into and cover the porous alloy layer. The alloy layer consists of sintered copper alloy particles and has a thickness of superimposed plural particles. The copper alloy powder has an average particle size of 25 to 100 &mgr;m so that the composite sliding material has smallersliding-contact resistance.Type: GrantFiled: October 17, 2000Date of Patent: December 24, 2002Assignee: Daido Metal Company Ltd.Inventors: Takahiro Niwa, Nobutaka Hiramatsu, Takayuki Shibayama
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Publication number: 20020155957Abstract: A composite anti-friction bearing structure comprising a bearing substrate and an anti-friction layer. The bearing structure can be in the form of bushings, wear plates, wear rings, etc. The anti-friction layer includes particles of an alloy which combines lubricity of molybdenum with the wear resistance and corrosion resistance of elements such as cobalt and nickel. The invention is particularly related to anti-friction bushings for use in die sets, presses and other heavy duty machinery.Type: ApplicationFiled: February 14, 2001Publication date: October 24, 2002Inventors: James C. Danly,, James C. Danly,
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Patent number: 6455475Abstract: The present invention is to provide a sliding member and a process for producing the same, which produce a high-quality soft metal layer uniformly coated on a sliding surface by a process alternative to electroplating or ion plating. The metal layer has been formed by ultra-fine metal (silver) particles dissolved in a solvent, which is coated on a sliding surface of the sliding member and dried and fired such that ultra-fine metal particles are melt and bonded to one another. The average particle diameter of the ultra-fine metal (silver) particles is 1 to 20 nm, and in particular 1 to 10 nm. The whole metal coating process can be carried out in the air at room temperature to about 200-300° C.Type: GrantFiled: November 13, 2000Date of Patent: September 24, 2002Assignee: Ebara CorporationInventor: Naoaki Ogure
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Patent number: 6342306Abstract: A bearing material includes a backing metal and a porous sintered metal layer sintered onto a surface of the backing metal, particles of an inorganic substance being contained at grain boundaries of the porous sintered metal layer. The porous sintered metal layer contains tin, nickel, phosphorus, and copper, and the particles of the inorganic substance are those of at least one of graphite, boron nitride, graphite fluoride, calcium fluoride, aluminum oxide, silicon oxide, and silicon carbide.Type: GrantFiled: November 3, 1999Date of Patent: January 29, 2002Assignee: Oiles CorporationInventors: Hideo Ozawa, Hiroshi Tsuji, Hirotsugu Tomita
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Patent number: 6309759Abstract: A sliding bearing, which comprises a lining and a bismuth or bismuth-alloy overlay having improved compatibility and fatigue resistance is provided. The overlay is characterized by the following orientation. The relative ratio of the X-ray diffraction intensity I[hkl] of the bismuth or bismuth-alloy overlay defined below satisfies the following conditions (a) and (b): (a) the relative ratio of the X-ray diffraction intensity I[hkl] of planes other than the {012} planes is from 0.2 to 5 times as high as the ratio of the X-ray diffraction intensity I[012], namely, 0.2I[012]≦I[hkl]≦5I[012] (b) the relative ratio of the X-ray diffraction intensity I[hkl] of three or more planes other than {012} planes ranges from 0.5 to 2 times as high as the ratio of the X-ray diffraction intensity I[012], namely, 0.5I[012]≦2I[012].Type: GrantFiled: July 7, 2000Date of Patent: October 30, 2001Inventors: Takashi Tomikawa, Hirofumi Michioka, Yoshio Fuwa, Yoshio Shimura, Shigeru Hotta
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Patent number: 6245718Abstract: A material having improved hardness characteristics and bearing, lower friction coefficient and increased service life in clusters of sliding friction contains powder of copper, iron, phosphorus, graphite, dust of disulphide of molybdenum and steel substrate made out of low carbohydrate steel. The material has a bimetal structure with granules inserted in a matrix. The material of the invention is especially useful in the machine-building industry, particularly for the production of blocks for units of sliding friction in machines, mechanisms and equipment.Type: GrantFiled: May 1, 2000Date of Patent: June 12, 2001Assignee: Bearing Sliding Inc.Inventors: Serhey M. Romanov, Dmitriy Romanov
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Patent number: 6093482Abstract: A carbon--carbon composite for friction products comprises an outer friction part and a load bearing structure part supporting the friction part. The friction part contains a mixture of carbon fibers, pitch powder and graphite powder, whereas the structure part is comprised of a pack of alternating layers of the mixture and layers of one member selected from the group consisting of carbon fabrics, carbon-based prepregs and carbon-based, segmented prepregs.Type: GrantFiled: December 16, 1998Date of Patent: July 25, 2000Assignee: Daewoo Heavy Industries Ltd.Inventors: Hyun Cheol Park, Hong Bum Lee, Ik Hyun Oh, Hyun Kyu Shin, Kwang Soo Kim, John Hyun Park
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Patent number: 6077815Abstract: A laminated material for sliding members having improved resistance to abrasion, hardness and wear resistance. The laminated material has a support structure and a sliding layer with electrodeposited matrix material, hard particles being embedded into the matrix material, having a diameter of <2 .mu.m and being provided in the form of individual particles distributed in a completely homogenous manner with a proportion of 2 to 20% by volume in the matrix material. The process to produce sliding members provides that a ternary electroplating bath free of fluoro-borate and without brighteners, using non-ionic surfactants and free alkyl sulphonic acids, and a grain refining agent and a fatty acid polyglycol ester is used. The hard particles are kept in the electroplating bath during electroplating at a steady concentration.Type: GrantFiled: January 30, 1998Date of Patent: June 20, 2000Assignee: Glyco-Metall-Werke Glyco B.V. & Co. KGInventors: Karl-Heinz Grunthaler, Klaus Staschko
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Patent number: 6015775Abstract: A self-lubricating sintered sliding member and its producing method, the member having excellent seizing resistance and wear resistance even in offset load and high load applications.The self-lubricating sintered sliding member is composed of an iron-family metal substrate and a sintered contact layer that is formed on a sliding side of the iron-family metal substrate and made from a sintered contact material containing an iron-family material. The sintered contact layer has, on a surface thereof, protrusions formed from solid lubricant particles including graphite. A solid lubricant layer is laid over the surface of the sintered contact layer where the protrusions are formed.Type: GrantFiled: February 4, 1998Date of Patent: January 18, 2000Assignee: Komatsu Ltd.Inventors: Takemori Takayama, Yoshikiyo Tanaka
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Patent number: 5960250Abstract: Bearing materials used for rolling bearings, such as roller bearings and ball bearings, and in particular, a bearing material having an extended rolling contact fatigue life.A bearing material having an extended rolling contact fatigue life comprises: 0.95 to 1.10 mass % of C, 0.15 to 0.70 mass % of Si, 1.15 mass % or less of Mn, 0.90 to 1.60 mass % of Cr and 0.025 mass % or less of P, and further 0.025 mass % or less of S and 0.0012 mass % or less of O as elements forming nonmetal inclusions, and the balance being Fe and incidental impurities, and the bearing material further contains 0.020 mass % or less of AlN, or the number of nonmetal sulfide inclusions each having a thickness of 1 .mu.m or more is 1,200 or less in an observation area of 320 mm.sup.2 for further extending the rolling contact fatigue life.Type: GrantFiled: October 20, 1997Date of Patent: September 28, 1999Assignees: Kawasaki Steel Corporation, Koyo Seiko Co., Ltd.Inventors: Satosi Yasumoto, Tosiyuki Hosino, Keniti Amano, Atsuhiko Ohta, Michiro Hamanoue
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Patent number: 5744433Abstract: A lubricant for metallurgical powder compositions contains an oligomer of amide type, which has a weight-average molecular weight M.sub.w of 30,000 at the most. A metal-powder composition containing the lubricant, as well as a method for making sintered products by using the lubricant, are also disclosed. Further, the use of the lubricant in warm compaction is described.Type: GrantFiled: November 29, 1996Date of Patent: April 28, 1998Assignee: Hoganas ABInventors: Helge Storstrom, Bjorn Johansson
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Patent number: 5732322Abstract: The disclosure describes a resin composition for a sliding member, comprising 1 to 25 wt % of component A selected from the group consisting of phosphates and barium sulfate, 1 to 15 wt % of component B selected from the group consisting of magnesium silicate and mica, and 5 to 50 wt % of component C selected from the group consisting of lead, tin, lead-tin alloy and mixtures thereof, the balance of polytetrafluoroethylene.Type: GrantFiled: May 22, 1995Date of Patent: March 24, 1998Assignee: Oiles CorporationInventors: Takashi Nakamaru, Sumihide Yanase, Akihiko Okimura
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Patent number: 5635299Abstract: A sliding member usable in dry and wet states includes a synthetic resin coated filler powder composition obtained by polymerizing a polyethylene based composition in the presence of a filler having a friction-reducing and/or wear-resisting property, uniformly dispersed in a matrix made of a waterproof synthetic resin, and optionally a reinforcing material as needed.Type: GrantFiled: September 30, 1994Date of Patent: June 3, 1997Assignee: Tsubakimoto Chain Co.Inventor: Kouji Tanaka