Ptfe (polytetrafluoroethylene) Patents (Class 508/181)
  • Patent number: 10526560
    Abstract: A novel method of preparing metal assemblies for long term storage and instant readiness for use, utilizing a light oil mixture or grease mixture incorporating functionalized and molecularly neutral PFPE fluid and a fluorosolvent.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: January 7, 2020
    Inventors: Benjamin Clarke, Paul Bessette
  • Patent number: 9951862
    Abstract: A drive device includes a gear having a hole; a shaft that passes through the hole; and a grease composition that is held in a clearance between the shaft and an inner peripheral surface of the hole. The gear rotates on a peripheral surface of the shaft. At least one of the gear and the shaft is made of a resin. The clearance is in a range of 10 to 110 ?m. The grease composition contains a hydrocarbon base oil and lithium soap serving as a thickener. A weight ratio of the hydrocarbon base oil to the lithium soap is in a range of 94.5:5.5 to 96.0:4.0. A consistency of the grease composition is in a range of 360 to 400.
    Type: Grant
    Filed: May 22, 2015
    Date of Patent: April 24, 2018
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Toshiyuki Kabata, Kumiko Seo, Masahiro Ishida, Naoki Matsuda, Teruyoshi Tanaka
  • Patent number: 9034808
    Abstract: It is known by the inventor that a universal synthetic lubricant additive that can greatly enhance the performance standards of existing lubricants, petroleum based or synthetic, imparts a new and desirable property not originally present in the existing oil or it reinforces a desirable property already possessed in some degree can greatly benefit the consumer. Although additives of many diverse types have been developed to meet special lubrication needs, their principal functions are relatively few in number.
    Type: Grant
    Filed: October 15, 2011
    Date of Patent: May 19, 2015
    Assignee: Bestline International Research, Inc.
    Inventor: Ronald J. Sloan
  • Publication number: 20150051123
    Abstract: There is provided a resin composition for a machinable liner of a sliding member. An ultraviolet curable resin composition for a self-lubricating liner contains a (meth)acrylate compound having an isocyanuric acid ring represented by the following formula and PTFE as a solid lubricant. In the formula (1), X is a group which contains an acryloyl group and is composed only of C, H, and O. Y and Z are groups each composed only of C, H, and O. PTFE is contained in an amount of 10 to 50% by weight with respect to a total amount of the ultraviolet curable resin composition. The ultraviolet curable resin composition is suitable for a self-lubricating liner 24 of a spherical bearing 20 having an outer race 22 and an inner race 26.
    Type: Application
    Filed: October 24, 2014
    Publication date: February 19, 2015
    Inventors: Tadahiko KARAKI, Kunihiro MATSUMOTO, Koichiro SAGIYAMA
  • Publication number: 20150024980
    Abstract: Provided is a grease composition that improves the dispersibility of a solid lubricant, that provides a sufficiently low friction coefficient in steel-resin sliding parts, and that prevents a stick-slip phenomenon. The grease composition comprising a lubricant base oil having a density of 0.75 to 0.95 g/cm3 at 15° C., an amide compound, a solid lubricant, and a metal soap-based thickener, wherein the solid lubricant is preferably a layered compound or a fluororesin, and wherein the amide compound is preferably a monoamide or a bisamide.
    Type: Application
    Filed: March 1, 2013
    Publication date: January 22, 2015
    Applicant: JX Nippon Oil & Energy Corporation
    Inventors: Takashi Arai, Kazumi Sakai, Yuji Shitara
  • Publication number: 20150024981
    Abstract: Provided is a grease composition that has high lubricity, particularly excellent wear resistance, and shows only a small extent of deterioration in wear resistance with long-term use under high temperatures. The grease composition comprises at least one base oil selected from a mineral oil-based lubricant base oil and a synthetic lubricant base oil, an amide compound, a solid lubricant, and a urea-based thickener, wherein the amide compound is heated and melted at least once with the base oil.
    Type: Application
    Filed: March 1, 2013
    Publication date: January 22, 2015
    Inventors: Yusuke Ayame, Kazumi Sakai, Yuji Shitara
  • Patent number: 8883697
    Abstract: A wear resistant lubricious composite includes a synthetic resin binder, a plurality of transfer film forming particles, and a plurality of hard nanoparticles. The hard nanoparticles are selected from the group consisting of metal oxides, metal carbides and metal nitride nanoparticles. A method of forming wear resistant lubricious composite articles includes the steps of providing a liquid phase synthetic resin precursor, adding a plurality of transfer film forming particles and a plurality of hard nanoparticles selected from the group consisting of metal oxide, metal carbide and metal nitride nanoparticles to the resin precursor to form a mixture, adding a hardener to the mixture, and curing the mixture.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: November 11, 2014
    Assignee: University of Florida Research Foundation
    Inventors: Wallace Gregory Sawyer, Ben Peter Boesl, Nicole Lee McCook, David L. Burris
  • Patent number: 8853140
    Abstract: The invention provides a grease composition comprising a base oil consisting of a fluorinated oil and an antirust agent, wherein said antirust agent comprises an aliphatic dibasic acid salt of the formula (1) in an amount of not less than 0.1% by mass and less than 1.0% by mass based on the total mass of the grease composition: (CH2)n(COO)2Mm??(1) wherein n is an integer of 1 to 19, M is an alkali or alkaline earth metal, m is 2 when M is an alkali metal and m is 1 when M is an alkaline earth metal, and a bearing wherein the grease is packed. The grease exerts less effects on the environment. It is low in evaporation loss at a high temperature, shows good antirust property and can be suitably used in a ball bearing operated at a high temperature.
    Type: Grant
    Filed: July 5, 2007
    Date of Patent: October 7, 2014
    Assignee: Kyodo Yushi Co., Ltd.
    Inventors: Kenichiro Matsubara, Yuji Onuki
  • Publication number: 20140213492
    Abstract: The invention relates to a high-temperature grease which is used inter alia in corrugated cardboard plants and comprises exclusively fluorine-free base oil.
    Type: Application
    Filed: August 27, 2012
    Publication date: July 31, 2014
    Inventors: Gabriele Wirtensohn, Martin Schweigkofler, Martin Schmid-Amelunxen
  • Patent number: 8758876
    Abstract: A coating which provides corrosion resistance, wear resistance, and, optionally, lubrication, for deposition on a threaded article is disclosed. The coating comprises a polymer matrix, such as a polyimide, which is modified with small amounts of a fluorine containing polymer modifier, as well as other compounds or additives to improve performance of the coating. Additionally, the coating can further comprise a solid lubricant or an anticorrosion compound dispersed within the polymer matrix.
    Type: Grant
    Filed: October 30, 2012
    Date of Patent: June 24, 2014
    Assignee: Tenaris Connections Limited
    Inventors: Gabriel Eduardo Carcagno, Klaus Endres
  • Patent number: 8703668
    Abstract: A method for applying an additive, e.g. a fluoropolymer, to cellulose. The method comprises a number of steps. First, solid cellulose, a solvent capable of dissolving cellulose, e.g. NMMO and a dispersion of the additive are brought into contact with each other. The additive is allowed to diffuse into the dissolved cellulose, which is possible as a result of the dissolution of the surface layer of the solid cellulose. The solubility of cellulose in the solvent is then reduced, whereby the additive that has diffused into the dissolved cellulose is incorporated into the resulting solid cellulose. A method for applying a fluoropolymer to cellulose as a surface coat is also described. Flexible bearing components comprising a mat of cellulose fibers and a fluoropolymer which may be made by the methods described.
    Type: Grant
    Filed: February 13, 2008
    Date of Patent: April 22, 2014
    Assignee: Whitford Ltd.
    Inventors: Andrew J. Melville, David J. Topping, David P. Willis
  • Patent number: 8658576
    Abstract: A composition and method for reducing the coefficient of friction and required pulling force of a wire or cable are provided. A composition of aqueous emulsion is provided that is environmentally friendly, halogen free and solvent free. The composition is compatible with various types of insulating materials and may be applied after the wire or cable is cooled and also by spraying or submerging the wire or cable in a bath. The composition contains lubricating agents that provide lower coefficient of friction for wire or cable installation and continuous wire or cable surface lubrication thereafter.
    Type: Grant
    Filed: October 21, 2010
    Date of Patent: February 25, 2014
    Assignee: Encore Wire Corporation
    Inventors: William Thomas Bigbee, Jr., Sheri H. Dahlke, Ronald A. Raedeke, Jason Drew Gillen, Melvin Glenn DeBord
  • Publication number: 20140038863
    Abstract: The present invention provides a defoaming agent composition in gel form, of number 1 NLGI grade or harder, for application to the inside wall of a container, being a composition for defoaming bubbles generated from lubricating oil present within a container. The present invention further provides a method of defoaming lubricating oil characterised in that it includes a step of applying a defoaming agent composition in gel form, of number 1 NLGI grade or harder, to the inside wall of a container for lubricating oil and characterised in that this step is a step in which said defoaming agent composition is applied to the inside wall face at or above the oil surface of the lubricating oil, or higher than this.
    Type: Application
    Filed: March 2, 2012
    Publication date: February 6, 2014
    Inventors: Kumiko Kamata, Tazaki Hiroyuki
  • Publication number: 20140005085
    Abstract: Embodiments of the present invention may include a macro-composition with a special structure. The structure includes a layered macro-composition made of a nanoparticle as an inner nucleus, an intermediate layer around the nucleus, and an outer layer intercalated with the nucleus or encapsulating the nucleus and the intermediate layer. A plurality of the layered macro-compositions is bonded together by bonds, so that each layered macro-composition is bonded to at least one other such layered macro-composition. Embodiments include a macro-composition made of three 3-layered macro-compositions joined in a chain by two bonds. These macro-composition assemblies may take the shape of layered macro-compositions bonded together in chains, or forming other shapes, such as rings. The layered macro-composition may be no more than about 100 nanometers in size, for example. The bonds of the complex macro-composition may have an average length of no more than about 100 nanometers, for example.
    Type: Application
    Filed: May 31, 2013
    Publication date: January 2, 2014
    Applicant: NanoMech, Inc.
    Inventor: Ajay P. Malshe
  • Patent number: 8618028
    Abstract: Fire resistant lubricating grease compositions resistant to self ignition and/or capable of self extinguishment when contacted with surfaces having temperatures of up to 900° C. are disclosed. The invention provides for grease compositions comprising (1) base oil (which can be mineral, vegetable, synthetic or combinations thereof), (2) at least one grease thickener (selected from calcium sulfonates or lithium-based soaps), and (3) water as major components. The invention also provides a method for the preparation of the grease composition and a method for lubrication of bearings, gears, surfaces and other lubricated components comprising use of the grease composition of the present invention. The grease compositions of this invention display excellent fire resistance properties and still have outstanding physical and performance characteristics for applications where temperatures and loads are high, shock loading is significant and in the presence of significant amounts of water.
    Type: Grant
    Filed: June 1, 2009
    Date of Patent: December 31, 2013
    Assignee: Castrol Limited
    Inventors: Hocine Faci, Robert N. Cisler, Alex M. Medrano
  • Publication number: 20130338049
    Abstract: A novel and environmentally friendly lignin based lubricant composition in the form of oil, gel, grease, paste, solid, or water/glycol emulsion comprising lignin and/or its derivatives with a dosage ranging from 0.01 to 95 wt %, preferably 0.1% to 80 wt %, or even more preferably 0.5 to 60 wt % dispersed in at least one or more components selected from 1) base oils, 2) surfactants or coupling agents, 3) lubricant additives, or 4) grease thickeners of soap or non-soap type whereupon the said composition was found to exhibit novel and synergistic performance benefits such as, but not limited to, antioxidancy, extreme pressure, antiwear, lubricity as well as a rheology modifying characteristics, e.g. thickening effect, for a broad range of lubricant, grease, or oil field drilling applications.
    Type: Application
    Filed: April 27, 2011
    Publication date: December 19, 2013
    Inventors: James King, Liwen Wei
  • Patent number: 8575078
    Abstract: The present invention relates to a coating for elastomeric linear profiles, where the coating comprises solid lubricant embedded into a polymeric matrix. It also relates to a wiper blade for windscreen wipers, comprising this type of coating, and also to a process for the production of an elastomeric linear profile coated according to the invention. The polymeric matrix with embedded solid lubricant is obtained by polymerizing, in the absence of polymeric binders, a mixture comprising the solid lubricant and low-molecular-weight crosslinking agent. In one embodiment, the matrix is obtained from the thermal polymerization of the low-molecular-weight crosslinking agent hexamethoxymethylmelamine. Examples of solid lubricants are graphite and HDPE.
    Type: Grant
    Filed: February 4, 2009
    Date of Patent: November 5, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Vincent Duval, Yves Verburgh, Valerie Carlier
  • Publication number: 20130274159
    Abstract: A dry lubricant comprises at least 50 wt % of fibers having a diameter between 50 nm and 10 microns and a length that is at least 5 times the diameter.
    Type: Application
    Filed: October 24, 2011
    Publication date: October 17, 2013
    Inventors: Jeroen Bongaerts, Piet Lugt, Dick Meijer, Dries Muller, Rihard Pasaribu, Alejandro Sanz, Richard Schaake, Alexander de Vries
  • Publication number: 20130225460
    Abstract: This invention provides a method for improving the physico-chemical and usage properties of an existing lubricant, of a solid or liquid consistency, such as gear oils, engine oils and all-purpose oils. The method is based on complementing the composition of the existing lubricant with a mixture of several solid substances (thickeners), in an amount varying from 5 to 35 weight percent of the initial existing lubricant. As a result of their addition, a considerable improvement in a number of the lubricant's properties is achieved. For example, an increase in saturation load, as measured on a 4-ball apparatus of 1600 N to 3150 N; improved friction coefficient ?, the wear scar under 600 N load, and more. Using the method specified in the invention, it is possible to make significant improvements to the quality of a lubricant at relatively low cost.
    Type: Application
    Filed: February 25, 2013
    Publication date: August 29, 2013
    Inventor: JACEK DLUGOLECKI
  • Publication number: 20130210688
    Abstract: The invention provides a lubricating grease composition with a worked penetration of 400 to 500 for a machine tool equipped with an automatic lubricator, containing a base oil having a kinematic viscosity at 40° C. of 10 to 200 mm2/s and 0.1 to 10 mass % of solid particles insoluble in the base oil. The lubricating grease composition of the invention can be fed using the automatic lubricator attached to the machine tool, and can prevent the stick-slip from occurring on the sliding lubrication portion of the machine tool.
    Type: Application
    Filed: October 26, 2011
    Publication date: August 15, 2013
    Applicant: KYODO YUSHI CO., LTD
    Inventors: Takayuki Ariyasu, Daming Dong, Hiroshi Ozeki, Minoru Namiki, Terasu Yoshinari
  • Patent number: 8420580
    Abstract: A sliding resin composition is provided which hardly seizes by decreasing oil repellency of PTFE to prevent discharging of lubricating oil from sliding surface. That is, by using resin composition 1 where particles of PTFE 3 in the surface of which inorganic compound 4 having oil-absorptivity is embedded are dispersed in synthetic resin 2, the inorganic compound 4 having oil-absorptivity absorbs and retains lubricating oil, and oil repellency of PTFE 3 on the sliding surface can be decreased. Thus, discharging of the lubricating oil from the sliding surface can be inhibited and resin composition 1 hardly seizes.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: April 16, 2013
    Assignee: Daido Metal Company
    Inventors: Hideki Iwata, Seiji Amano
  • Patent number: 8415280
    Abstract: A penetrating lubricant with the capacity to offer a both penetration into rust and corrosion. Further, this lubricant actively penetrates the crystalline surface of the metal while exhibiting extreme pressure lubrication, non-migrating with lasting protection. Further lubricant exhibits dielectric strength of over 8000 volts, at the same time cleaning electrical contacts, thereby reducing resistance and associated heat. The preferred embodiment may contain alpha-olefins, low-odor aromatic solvents, base oils, and high flash mineral spirits.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: April 9, 2013
    Assignee: BestLine International Research, Inc.
    Inventor: Ronald J. Sloan
  • Patent number: 8377858
    Abstract: The invention provides a grease composition for constant velocity joint containing the components (a) to (g) below and a constant velocity joint containing said composition. (a) a diurea thickening agent having the following formula (1): R1NH—CO—NH—C6H4-p-CH2—C6H4-p-NH—CO—NHR2??(1) wherein R1 and R2 may be the same or different and represent C8-C20 alkyl groups, (b) an ester synthetic oil, (c) a mineral oil and/or a synthetic hydrocarbon oil, (d) a molybdenum dialkyldithiocarbamate, (e) molybdenum disulfide, (f) a polytetrafluoroethylene, and (g) a zinc dithiophosphate compound. The grease composition of the invention reduces variations in rotational resistance of the constant velocity joint at a low temperature.
    Type: Grant
    Filed: May 21, 2008
    Date of Patent: February 19, 2013
    Assignees: Kyodo Yushi Co., Ltd., NTN Corporation
    Inventors: Mitsuhiro Kakizaki, Shinya Kondo, Shinichi Takabe, Takaaki Shibata
  • Patent number: 8329623
    Abstract: The present invention provides a grease composition (7) which has a low friction and a low viscosity and is durable at a high temperature and a grease-sealed bearing (1) in which the grease composition is enclosed. The grease composition contains base oil, a thickener, and an additive. The base oil contains an ionic liquid consisting of a cation component and an anion component. The additive contains a corrosion inhibitor such as nitrites, molybdates or dibasic acid salts. The thickener is fluorine resin such as polytetrafluoroethylene. The grease composition (7) is applied to a periphery of each rolling element (4) of the grease-sealed bearing (1).
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: December 11, 2012
    Assignee: NTN Corporation
    Inventor: Takayuki Kawamura
  • Patent number: 8304373
    Abstract: A solid lubricant for being embedded in pores or grooves formed at a sliding surface of a sliding member body, comprises 5 to 30% by volume of a polyethylene resin, 20 to 60% by volume of a hydrocarbon-based wax and 10 to 60% by volume of melamine cyanurate. Such a solid lubricant can exhibit sliding properties identical to or higher than those of lead-containing solid lubricants, even under high load conditions.
    Type: Grant
    Filed: November 20, 2003
    Date of Patent: November 6, 2012
    Assignee: Oiles Corporation
    Inventor: Yoshiaki Yamamoto
  • Patent number: 8242065
    Abstract: A grease composition, which comprises a base oil selected from at least one of synthetic hydrocarbon oil, ester-based synthetic oil, and ether-based synthetic oil; a thickening agent selected from at least one of lithium-based soap, lithium-based complex soap, and a urea-based compound; polytetrafluoroethylene resin powders having a number average molecular weight Mn of 20,000-100,000; and zinc dialkyldithiophosphate having straight or branched alkyl groups of at least 3 carbon atoms, preferably 5-13 carbon atoms, and more preferably 8-12 carbon atoms, has not only a distinguished lubricability, when applied to plastic members, but also a distinguished durability as given by change in friction coefficient and wear loss, after the sliding test.
    Type: Grant
    Filed: October 2, 2007
    Date of Patent: August 14, 2012
    Assignee: NOK Kluber Co., Ltd.
    Inventors: Wataru Sawaguchi, Toshio Nitta
  • Patent number: 8227389
    Abstract: A lubricant additive produced by various processes, including mixing an organophosphate and an organofluorine compound, reacting an organophosphate and an organofluorine compound, reacting a fluorinated organophosphate and an organofluorine compound (with or without molybendum disulfide), or reacting an organophosphate, a metal halide and an organofluorine compound (with or without molybendum disulfide), to produce a reaction mixture comprising the lubricant additive. Also, a lubricant produced by various processes, including mixing an organophosphate and an organofluorine compound, reacting an organophosphate and an organofluorine compound, reacting a fluorinated organophosphate and an organofluorine compound (with or without molybendum disulfide), or reacting an organophosphate, a metal halide and an organofluorine compound (with or without molybendum disulfide), and adding at least a portion of the reaction mixture to a lubricant base.
    Type: Grant
    Filed: October 11, 2007
    Date of Patent: July 24, 2012
    Inventors: Pranesh B. Aswath, Harold Shaub, Ramoun Mourhatch, Krupal Patel, David P. Owen, Ronald L. Elsenbaumer
  • Publication number: 20120184471
    Abstract: Lubricating varnish for coating a metal component or applied to a metal component, including a base coat as a matrix and at least one lubricant. At least one antiwear agent (5) is additionally included.
    Type: Application
    Filed: September 23, 2010
    Publication date: July 19, 2012
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Jurgen Windrich, Carsten Duppe, Ivan Grozev
  • Patent number: 8202825
    Abstract: There are provided a solid lubricant having an island-and-sea structure, which, with the sea phase strengthened, remains free of troubles such as chipping even in use under high load conditions, and a sliding member having the solid lubricant embedded therein. The solid lubricant comprises 1 to 10% by volume of a polyethylene resin, 20 to 60% by volume of a hydrocarbon-based wax, 10 to 60% by volume of melamine cyanurate, 5 to 15% by volume of a polyamide resin, and 2 to 10% by volume of a modified polyethylene resin. The sliding member has the solid lubricant embedded in pores or grooves formed in a sliding surface of the sliding member body.
    Type: Grant
    Filed: September 4, 2007
    Date of Patent: June 19, 2012
    Assignee: Oiles Corporation
    Inventor: Yoshiaki Yamamoto
  • Publication number: 20120135897
    Abstract: The invention relates to a lubricant in the form of grease or thick lubricating gel or transmission oil, as well as motor or universal oils with a myriad of applications. As a result of its contents presented in the patent application is characteristic of low coefficient of friction ranging from 0.055 to 0.062. As the main component, the contents of the discussed lubricant includes three or four stearates of metals or hydroxistearates of metals, which interact and cause a noticeable reduction of friction drag on the lubricated surfaces. Additionally, these substances may include a number of other solid or liquid elements, which maintain low friction drags and, furthermore, improve the lubricant through increasing its load capacity, antirust characteristics, shear strength, etc.
    Type: Application
    Filed: November 23, 2011
    Publication date: May 31, 2012
    Inventor: Jacek Dlugolecki
  • Publication number: 20120128964
    Abstract: An azeotrope-like mixture consisting essentially of a binary azeotrope-like mixture consisting essentially of trans-1-chloro-3,3,3-trifluoropropene (trans-HFO-1233zd) and a second component selected from the group consisting of 2,3,3,3-tetrafluoropropene (HFO-1234yf) and trans-1,3,3,3-tetrafluoropropene (trans-HFO-1234ze), and combinations of these and various uses thereof.
    Type: Application
    Filed: November 15, 2011
    Publication date: May 24, 2012
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: RYAN HULSE, RAJIV R. SINGH, HANG T. PHAM
  • Publication number: 20120077720
    Abstract: A penetrating lubricant with the capacity to offer a both penetration into rust and corrosion. Further, this lubricant actively penetrates the crystalline surface of the metal while exhibiting extreme pressure lubrication, non-migrating with lasting protection. Further lubricant exhibits dielectric strength of over 8000 volts, at the same time cleaning electrical contacts, thereby reducing resistance and associated heat. The preferred embodiment may contain alpha-olefins, low-odor aromatic solvents, base oils, and high flash mineral spirits.
    Type: Application
    Filed: December 2, 2011
    Publication date: March 29, 2012
    Applicant: BESTLINE INTERNATIONAL RESEARCH INC.
    Inventor: Ronald J. Sloan
  • Patent number: 8097569
    Abstract: A compressor includes a swash plate, and a shoe connected to an outer periphery of the swash plate. A surface of the swash plate slides upon a flat surface of the shoe. A sliding film is applied to the surface of the swash plate. The sliding film is formed of binder resin which contains a solid lubricant and titanium oxide powder. This allows the surface of the swash plate and the flat surface of the shoe to smoothly slide upon each other.
    Type: Grant
    Filed: April 13, 2004
    Date of Patent: January 17, 2012
    Assignees: Kabushiki Kaisha Toyota Jidoshokki, Dow Corning Toray Co., Ltd.
    Inventors: Akio Saiki, Noriyuki Shintoku, Noriaki Baba, Toshihisa Shimo, Hitotoshi Murase, Tetsuji Yamaguchi, Jiro Yamashita, Takahiro Sugioka
  • Patent number: 8082899
    Abstract: A double-layer lubrication coating composition is made up of an upper-layer coating composition and a lower-layer coating composition. The upper-layer coating composition is made up of 50 to 70 wt % of an epoxy resin or a polyamide-imide resin, 5 to 20 wt % of boron nitride, and 15 to 30 wt % of silicone nitride or alumina. The lower-layer coating composition is made up of 50 to 70 wt % of an epoxy resin or a polyamide-imide resin, 15 to 30 wt % of polytetrafluoroethylene and 5 to 20 wt % of molybdenum disulfide and may include graphite as required.
    Type: Grant
    Filed: February 10, 2009
    Date of Patent: December 27, 2011
    Assignee: Honda Motor Co., Ltd.
    Inventors: Yoshimi Kuroda, Kentaro Sugimura
  • Publication number: 20110306429
    Abstract: The present invention provides a grease composition or a lubricating oil composition which is capable of effectively preventing hydrogen brittleness-caused peeling from occurring on a rolling surface of a rolling bearing, is excellent in durability in a high temperature and speed operation, and can be used for a long time. A grease-packed bearing (1) has an inner ring (2), an outer ring (3), and a plurality of rolling elements (4). A sealing member (6) for sealing a grease composition (7) is provided at openings (8a) and (8b) disposed at both axial ends of the inner ring (2) and the outer ring (3). The grease composition (7) includes a base grease composed of a base oil and a thickener and an additive added to the base grease. The additive contains at least one compound selected from among plant-derived polyphenolic compounds and compounds formed by decomposition thereof.
    Type: Application
    Filed: February 24, 2010
    Publication date: December 15, 2011
    Applicant: NTE CORPORATION
    Inventors: Hidenobu Mikami, Yosuke Taguchi
  • Patent number: 8067344
    Abstract: A lubricating grease composition, which comprises a base oil consisting of a mixture of 100 parts by weight of at least one of a perfluoropolyether oil (A), represented by RfO[CF(CF3)CF2O]p(CF2CF2O)qRf (where Rf is a perfluoroalkyl group having 1-5 carbon atoms, p+q=2-200, q/p=0-2, and q may be 0), and a perfluoropolyether oil (B), represented by F(CF2CF2CF2O)sC2F5 (where s=2-100), and 0-100 parts by weight of at least one of a perfluoropolyether oil (C), represented by RfO(CF2CF2O)m(CF2O)nRf (where m+n=3-200 and m:n=10-90:90-10), and a perfluoropolyether oil (D), represented by RfO[CF(CF3)CF2O]a(CF2CF3O)b(CF2O)cRf (where a+b+c=3-200, b is 0 or an integer of 1 or more, and c is an integer of 1 or more), preferably further admixed with a thickening agent, can suppress corrosion of metallic materials by corrosive gases and also has a good heat resistance.
    Type: Grant
    Filed: April 19, 2010
    Date of Patent: November 29, 2011
    Assignee: NOK Kluber Co., Ltd.
    Inventors: Akihiko Shimura, Tetsuhiro Kitahara, Tatsuya Hashimoto
  • Patent number: 8044003
    Abstract: A grease composition, which comprises (A) a perfluoropolyether base oil, (B) a thickener, and (C) barium sulfate and/or antimony oxide, where 0.1-50% by weight of the component (B) and 1-25% by weight of the component (C) are contained, has a distinguished effect on improvements of abrasion resistance, friction characteristics, load durability, high-temperature durability and corrosion resistance without any deterioration of heat resistance by adding at least one of barium sulfate and antimony oxide, each having an average primary particle size of 0.1-20 ?m, as component (C).
    Type: Grant
    Filed: October 26, 2006
    Date of Patent: October 25, 2011
    Assignee: NOK Kluber Co., Ltd.
    Inventors: Tetsuhiro Miyamoto, Akihiko Shimura, Tetsuhiro Kitahara, Jiro Yurimoto
  • Publication number: 20110257053
    Abstract: [Object] To provide a lubrication kit which is capable of improving wear resistance and durability of a sliding portion mounted in a small electronic device and which is capable of reducing a sound generated during driving. [Solution] A lubrication kit used for a small electronic device having a sliding portion, according to the present invention comprises at least one lubricant selected from a lubricant (1) comprising an anti-wear agent and a base oil which contains a polyol ester oil and/or a paraffinic hydrocarbon oil and a lubricant (2) comprising an anti-wear agent, polytetrafluoroethylene particles, and a base oil which contains a polyol ester oil and/or a paraffinic hydrocarbon oil, and a surface-treating agent obtained from a fluorine type surfactant and a phosphoric ester having a hydrocarbon group in which a part or all of hydrogen atoms have been substituted with a fluorine atom.
    Type: Application
    Filed: December 25, 2009
    Publication date: October 20, 2011
    Applicant: CITIZEN ELECTRONICS CO., LTD
    Inventors: Yuji Akao, Masahiro Furuya
  • Patent number: 8039424
    Abstract: It is known by the inventor that a universal synthetic lubricant additive that can greatly enhance the performance standards of existing lubricants, petroleum based or synthetic, imparts a new and desirable property not originally present in the existing oil or it reinforces a desirable property already possessed in some degree can greatly benefit the consumer. Although additives of many diverse types have been developed to meet special lubrication needs, their principal functions are relatively few in number.
    Type: Grant
    Filed: June 23, 2010
    Date of Patent: October 18, 2011
    Assignee: BestLine International Research, Inc.
    Inventor: Ronald J. Sloan
  • Publication number: 20110218128
    Abstract: Disclosed is a lubricating grease composition comprising a complex metal soap thickener of aliphatic dicarboxylic acid and monoamide monocarboxylic acid, and a fluororesin powder contained in a base oil mixture of a non-fluorine-based base oil and a fluorine-based base oil, which are incompatible with each other. The lubricating grease composition can be produced by kneading, preferably kneading by a three-roll mill, a non-fluorine-based grease and a fluorine-based grease, the non-fluorine-based grease being prepared by stirring a non-fluorine-based base oil, aliphatic dicarboxylic acid, and monoamide monocarboxylic acid under heating, and adding metal hydroxide thereto to form a complex metal soap in the non-fluorine-based base oil; and the fluorine-based grease being prepared from a fluorine-based base oil and a fluororesin powder.
    Type: Application
    Filed: October 13, 2009
    Publication date: September 8, 2011
    Applicant: NOK KLUBER CO., LTD.
    Inventors: Takeshi Hishinuma, Tatsuya Hashimoto, Toshio Nitta
  • Publication number: 20110195879
    Abstract: The present disclosure includes fluoropolymer-based materials, methods of making fluoropolymer-based materials, methods of using fluoropolymer-based materials, and the like.
    Type: Application
    Filed: November 17, 2009
    Publication date: August 11, 2011
    Inventor: Wallace Gregory Sawyer
  • Publication number: 20110190177
    Abstract: A process includes adding an effective amount of a calcium lignin sulfonate to a thickened base grease to form a lubricating grease wherein the calcium lignin sulfonate has a molecular weight of at least 10,000 g/mol; the calcium lignin sulfonate has a water content of less than about 0.5 wt %; the effective amount is from about 1 wt % to about 20 wt % based upon the weight of the lubricating grease; the thickened base grease is obtained from a grease forming process or a lubricating paste; and the lubricating grease has a water solubility below about 3 wt %, as determined by a water wash out-test.
    Type: Application
    Filed: January 26, 2011
    Publication date: August 4, 2011
    Inventor: Nael Naguib Zaki
  • Publication number: 20110190178
    Abstract: Lead-free solid lubricant to be embedded in pores or grooves formed at a sliding surface of a sliding member body, comprising 20 to 40% by weight of at least one wax selected from hydrocarbon waxes, higher-fatty acids, esters of higher-fatty acid and amides of higher-fatty acid, 20 to 40% by weight of melamine cyanurate, and 20 to 50% by weight of a polytetrafluoroethylene resin. The lubricant exhibits sliding properties identical to or higher than those of lead-containing solid lubricants, even under high load conditions.
    Type: Application
    Filed: April 11, 2011
    Publication date: August 4, 2011
    Applicant: OILES CORPORATION
    Inventors: Masayuki Rokugawa, Takuya Hirayama
  • Publication number: 20110152139
    Abstract: Grease for a slide bearing, which can suppress unusual noise attributable to a slip caused between a shaft and a bearing when a machine is stopped. In slide bearing grease 24 supplied to between a slide bearing 16 formed of a porous sintered alloy-made bushing having pores 30 impregnated with lubricating oil 31 and a shaft 22 inserted in the slide bearing 16 and supported to be slidingly rotatable in the circumferential direction, the slide bearing grease 24 employs base oil having dynamic viscosity of 10-70 mm2/s at 40° C. and exuding under a load of the shaft 22 to form an oil film 35 between the slide bearing 16 and the shaft 22.
    Type: Application
    Filed: March 7, 2011
    Publication date: June 23, 2011
    Applicant: HITACHI CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Hideki Akita, Osamu Gokita, Minoru Fujisaki, Hajime Maezawa, Nobuo Yanaka, Hiroshi Nishimura, Hideyuki Fujiya
  • Publication number: 20110143152
    Abstract: A wear resistant lubricious composite includes a synthetic resin binder, a plurality of transfer film forming particles, and a plurality of hard nanoparticles. The hard nanoparticles are selected from the group consisting of metal oxides, metal carbides and metal nitride nanoparticles. A method of forming wear resistant lubricious composite articles includes the steps of providing a liquid phase synthetic resin precursor, adding a plurality of transfer film forming particles and a plurality of hard nanoparticles selected from the group consisting of metal oxide, metal carbide and metal nitride nanoparticles to the resin precursor to form a mixture, adding a hardener to the mixture, and curing the mixture.
    Type: Application
    Filed: January 31, 2011
    Publication date: June 16, 2011
    Inventors: Wallace Gregory Sawyer, Ben Peter Boesl, Nicole Lee McCook, David L. Burris
  • Publication number: 20110124537
    Abstract: The invention relates to a lubricant composition based on modified, natural and renewable raw materials, the viscosity of which can be adjusted according to the application. The invention relates more particularly to biodegradable lubricant compositions.
    Type: Application
    Filed: June 9, 2009
    Publication date: May 26, 2011
    Inventors: Thomas Kilthau, Martin Schmidt-Amelunxen, Sarah Zirkel
  • Patent number: 7939605
    Abstract: The invention relates to the field of chemistry and relates to long-term stable oil PTFE dispersions, such as can be used, for example, in transmissions or bearings, and a method for the production thereof. The object of the present invention is therefore to disclose a long-term stable oil PTFE dispersion as well as a simple and cost-effective method for the production thereof. The object is attained with an oil PTFE dispersion comprising PTFE particles and a monoolefinically or polyolefinically unsaturated oil, wherein molecules of the olefinically unsaturated oil are covalently/chemically coupled to PTFE (primary) particle surfaces via radical reactions, and wherein a permanent charge separation between the PTFE particle surfaces and the coupled oil molecules is present and a fine dispersion of the PTFE particles in the oil or oil mixture is present.
    Type: Grant
    Filed: December 9, 2008
    Date of Patent: May 10, 2011
    Assignee: Leibniz—Institut Fuer Polymerforschung Dresden E.V.
    Inventor: Dieter Lehmann
  • Patent number: 7910527
    Abstract: A wear resistant lubricious composite includes a synthetic resin binder, a plurality of transfer film forming particles, and a plurality of hard nanoparticles. The hard nanoparticles are selected from the group consisting of metal oxides, metal carbides and metal nitride nanoparticles. A method of forming wear resistant lubricious composite articles includes the steps of providing a liquid phase synthetic resin precursor, adding a plurality of transfer film forming particles and a plurality of hard nanoparticles selected from the group consisting of metal oxide, metal carbide and metal nitride nanoparticles to the resin precursor to form a mixture, adding a hardener to the mixture, and curing the mixture.
    Type: Grant
    Filed: March 21, 2006
    Date of Patent: March 22, 2011
    Assignee: University of Florida Research Foundation
    Inventors: Wallace Gregory Sawyer, Ben Peter Boesl, Nicole Lee McCook, David L. Burris
  • Publication number: 20110007990
    Abstract: The present invention provides a grease composition (7) which has a low friction and a low viscosity and is durable at a high temperature and a grease-sealed bearing (1) in which the grease composition is enclosed. The grease composition contains base oil, a thickener, and an additive. The base oil contains an ionic liquid consisting of a cation component and an anion component. The additive contains a corrosion inhibitor such as nitrites, molybdates or dibasic acid salts. The thickener is fluorine resin such as polytetrafluoroethylene. The grease composition (7) is applied to a periphery of each rolling element (4) of the grease-sealed bearing (1).
    Type: Application
    Filed: March 31, 2009
    Publication date: January 13, 2011
    Applicant: NTN CORPORATION
    Inventor: Takayuki Kawamura
  • Publication number: 20100325830
    Abstract: The present invention relates to a coating for elastomeric linear profiles, where the coating comprises solid lubricant embedded into a polymeric matrix. It also relates to a wiper blade for windscreen wipers, comprising this type of coating, and also to a process for the production of an elastomeric linear profile coated according to the invention. The polymeric matrix with embedded solid lubricant is obtained by polymerizing, in the absence of polymeric binders, a mixture comprising the solid lubricant and low-molecular-weight crosslinking agent. In one embodiment, the matrix is obtained from the thermal polymerization of the low-molecular-weight crosslinking agent hexamethoxymethylmelamine. Examples of solid lubricants are graphite and HDPE.
    Type: Application
    Filed: February 4, 2009
    Publication date: December 30, 2010
    Applicant: ROBERT BOSCH GMBH
    Inventors: Vincent Duval, Yves Verburgh, Valerie Carlier