With Graphite, Coal, Or Elemental Carbon Patents (Class 508/105)
  • Patent number: 11092191
    Abstract: A method for producing a housing-side or rotor-side bearing body of a sliding bearing arrangement for mounting a rotating shaft of a rotor in a fixed housing. Providing a basic body of the bearing body. Processing the basic body on a surface by forming multiple intersecting grooves, between the intersecting grooves multiple bar-like protrusions are formed. Reforming the protrusions subject-to form a defined pattern of undercut-like recesses or geometries. Applying a sliding bearing material to the surface having the reformed protrusions subject to infiltrating or filling the undercut-like recesses or geometries.
    Type: Grant
    Filed: January 24, 2020
    Date of Patent: August 17, 2021
    Assignee: RENK GMBH
    Inventors: Christoph Hentschke, Alexander Unger
  • Patent number: 10081056
    Abstract: Provided is a sintered bearing that is capable of reducing cost through reduction in usage amount of copper, excellent in initial running-in characteristics and quietness, and is high in durability. Raw material powders including iron powder, flat copper powder, low-melting point metal powder, and graphite are loaded into a mold, and a green compact is formed under a state in which the flat copper powder is caused to adhere onto a molding surface. Subsequently, sintering is carried out without causing iron in the green compact to react with carbon so that an iron structure is formed of a ferrite phase. In this manner, a sintered bearing (1) including a base part (S2) including copper at a uniform content, and a surface layer (S1) covering a surface of the base part (S2) and including copper at a larger content than the base part (S2) can be obtained.
    Type: Grant
    Filed: September 18, 2012
    Date of Patent: September 25, 2018
    Assignee: NTN CORPORATION
    Inventors: Yoshinori Ito, Sunao Shimizu, Eiichirou Shimazu, Takahiro Okuno
  • Patent number: 9677021
    Abstract: Provided is a sliding member having: a back metal layer; and a sliding layer on the back metal layer. The sliding layer includes a porous sintered layer and a resin composition. The sintered layer includes Ni—P alloy phase and granular steel phase made of a carbon steel including 0.3-1.3 mass % of carbon and having a structure of: ferrite phase; and perlite phase, or perlite phase and cementite phase. The Ni—P alloy phase binds the steel phases with one another and/or binds the steel phases with the back metal layer. The steel phase includes a low perlite phase part in a surface. The low perlite phase part has an area ratio of the perlite phase lowered by 50% or more compared with a total area ratio of the perlite phase and the cementite phase at a central part of the steel phase when observed in a cross-section.
    Type: Grant
    Filed: May 13, 2015
    Date of Patent: June 13, 2017
    Assignee: Daido Metal Company Ltd.
    Inventors: Hideki Iwata, Yasushi Saito
  • Patent number: 9360048
    Abstract: Provided is a sliding member including a steel back metal layer and a sliding layer with a porous sintered layer and a resin composition. The porous sintered layer includes granular Fe or Fe alloy phase and Ni—P alloy phase for binding the Fe or Fe alloy phase grains with one another. The steel back metal layer is made of a carbon steel including 0.05-0.3 mass % of carbon and having a structure composed of ferrite phase and pearlite phase, and includes a low pearlite phase part in a surface thereof on a side of the sliding layer. The low pearlite phase part has a ratio of the pearlite phase is lowered by 50% or more compared with the pearlite phase at a central part in a thickness direction of the steel back metal layer. The Ni—P alloy phase may cover the entire surface of the steel back metal layer.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: June 7, 2016
    Assignee: Daido Metal Company Ltd.
    Inventors: Hideki Iwata, Yasushi Saito
  • Patent number: 8974588
    Abstract: A coating composition, a process of applying a coating having a coating composition, and a process of forming a coating composition are disclosed. The coating composition includes an alloy and an oxide component comprising nickel oxide. The process of applying the coating includes cold spraying the coating onto the article. The process of forming the coating composition includes blending and milling the alloy with the oxide component.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: March 10, 2015
    Assignee: General Electric Company
    Inventors: Yuk-Chiu Lau, Surinder Singh Pabla, David Vincent Bucci, Paul Mathew, Ronald Ralph Cairo, Krishnamurthy Anand, Guruprasad Sundararajan, Mohandas Nayak, Eklavya Calla
  • Publication number: 20150018254
    Abstract: A sliding element for use in an internal combustion engine may include a ferrous base having a peripheral sliding surface covered by a protective surface layer, the protective surface layer including at least one nitride applied via at least one of physical vapour deposition and a nitrided layer. The peripheral sliding surface may have a diamond like carbon (DLC) coating disposed thereon. The coating may include at least one of (a) one or more transition layers composed of WC1-x and (b) an adhesive layer of metallic chromium with a crystal structure. The coating may include an intermediate layer of metal DLC, the metal may be tungsten in a multilayer structure of a-C:H:W and a-C:H, and an outer layer of metal-free DLC.
    Type: Application
    Filed: February 15, 2013
    Publication date: January 15, 2015
    Applicants: Mahle-MEtal Leve S/A, Mahle International GmbH
    Inventors: Juliano A. Araujo, Nuno Costa
  • Patent number: 8911875
    Abstract: A sliding element, particularly a piston ring for an internal combustion engine, includes a substrate, and a wear-protection layer, obtained by thermal spraying of a powder comprising the element proportions 2-50 percent by weight iron, FE; 5-60 percent by weight tungsten, W; 5-40 percent by weight chrome, Cr; 5-25 percent by weight nickel, Ni; 1-5 percent by weight molybdenum, Mo; 1-10 carbon, C and 0.1-2 percent by weight silicon, Si; and a running-in layer, obtained by thermal spraying of a powder comprising the element proportions 60-95 percent by weight nickel; 5-40 percent by weight carbon.
    Type: Grant
    Filed: November 23, 2009
    Date of Patent: December 16, 2014
    Assignee: Federal-Mogul Burscheid GmbH
    Inventors: Marcus Kennedy, Michael Zinnabold, Marc-Manuel Matz
  • Publication number: 20140323368
    Abstract: The present invention relates to a sliding component for use in internal combustion engines, provided with a ferrous base (10) coated with a protective surface layer (11) composed of at least one nitride and applied by physical vapor deposition (PVD) or a nitrided layer to the sliding peripheral surface (2) of which a diamond-like carbon (DLC) coating (12) is applied, the coating (12) comprising at least one transition layer (122) composed of WC1-x and/or of at least one layer (121) of chromium metal with a crystalline structure (bcc—body cubic center) located between the ferrous base (10) and an external layer of amorphous carbon (124).
    Type: Application
    Filed: December 7, 2012
    Publication date: October 30, 2014
    Inventors: Juliano Avelar Araujo, Nuno Costa
  • Patent number: 8679400
    Abstract: An iron-based sintered sliding material includes: a sintered structure which contains 10-50 wt. % copper and 1-15 wt. % carbon and has been formed by sintering a powder mixture obtained by mixing at least one of an Fe—Cu alloy powder containing copper in an amount which is the solid solubility or larger and is 5-50 wt. %, excluding 50 wt. %, and an Fe—Cu—C alloy powder containing copper in an amount which is the solid solubility or larger and is 5-50 wt. %, excluding 50 wt. %, and containing carbon in an amount of 0-5 wt. %, excluding 0 wt. %, with a graphite powder and at least one of a copper powder and a copper alloy powder; and graphite particles dispersed in the sintered sliding material in an amount of 1-14 wt. % or 3-50 vol. %.
    Type: Grant
    Filed: March 6, 2012
    Date of Patent: March 25, 2014
    Assignee: Komatsu Ltd
    Inventor: Takemori Takayama
  • Publication number: 20130252859
    Abstract: A method and composition for producing a monolithic hybrid composite consisting of a composite matrix, a reinforcement phase, and a solid/self-lubrication phase. The composition may comprise a graphite (“C”) phase and a titanium carbide (“TiC”) phase in a nickel (“Ni”) matrix. The process may include the step of blending pure Ni and pure titanium (“Ti”) powders with Ni-coated graphite powder using Laser Engineered Net Shaping (“LENS”).
    Type: Application
    Filed: February 18, 2013
    Publication date: September 26, 2013
    Inventors: Sundeep Gopagoni, Thomas W. Scharf, Rajarshi Banerjee, Jaimie S. Tiley
  • Publication number: 20130085088
    Abstract: A nanocomposite coating and method of making and using the coating. The nanocomposite coating is disposed on a base material, such as a metal or ceramic; and the nanocomposite consists essentially of a matrix of an alloy selected from the group of Cu, Ni, Pd, Pt and Re which are catalytically active for cracking of carbon bonds in oils and greases and a grain structure selected from the group of borides, carbides and nitrides.
    Type: Application
    Filed: September 30, 2011
    Publication date: April 4, 2013
    Inventors: Ali Erdemir, Osman Levent Eryilmaz, Mustafa Urgen, Kursat Kazmanli
  • Patent number: 8361939
    Abstract: In a multilayered sintered sliding member, a porous sintered alloy layer comprising 3 to 10 wt. % of an Sn component, 10 to 30 wt. % of an Ni component, 0.5 to 4 wt. % of a P component, 30 to 50 wt. % of an Fe component, 1 to 10 wt. % of a high-speed tool steel component, 1 to 5 wt. % of a graphite component, and 20 to 55 wt. % of a copper component is integrally diffusion-bonded to a backing plate.
    Type: Grant
    Filed: July 30, 2008
    Date of Patent: January 29, 2013
    Assignees: Caterpillar Japan Ltd., Oiles Corporation
    Inventors: Takayuki Yuasa, Masaya Yorifuji, Tomoyuki Yamane, Shinya Nishimura
  • Patent number: 8222189
    Abstract: There is a coated, dynamic contact surface. The contact has a substrate and a carbon-based coating on the substrate. The coating has a coefficient of friction of about 0.5 or less and an atomic hydrogen content of about 5% to about 25%. There is also a mechanical system. There is a method for increasing oil-out survivability in a mechanical system.
    Type: Grant
    Filed: December 13, 2005
    Date of Patent: July 17, 2012
    Assignee: United Technologies Corporation
    Inventors: Clark V. Cooper, Michael F. Mullen
  • Patent number: 8119577
    Abstract: An object has bearing location where the object comes into contact with a counter-piece. The bearing location includes a coating to reduce wear and friction. The coating comprises about 90-100 weight percent thermoplastic polymer and about 0-10 weight percent finely divided solid fillers and finely divided dry lubricants. The coating has a thickness of between about 5-50 ?m.
    Type: Grant
    Filed: March 2, 2006
    Date of Patent: February 21, 2012
    Assignee: ACS Coating Systems GmbH
    Inventor: Christoph Stecher
  • Patent number: 7998572
    Abstract: A self-lubricating coating is disclosed. The coating includes a base material. The coating also includes a nanoparticle of a first material and a shell substantially surrounding the nanoparticle and including a second material different than the first material.
    Type: Grant
    Filed: August 12, 2008
    Date of Patent: August 16, 2011
    Assignee: Caterpillar Inc.
    Inventors: Andrew Neil McGilvray, Atanu Adhvaryu, Lucy Victoria Davies
  • Publication number: 20110021390
    Abstract: The low friction sliding member includes a substrate and an amorphous hard carbon film formed on the surface of the substrate and makes sliding contact with a mating member under a wet oiling condition. The lubricant oil includes at least one of sulfur (S) and phosphorus (P) and at least one of zinc (Zn), calcium (Ca), magnesium (Mg), sodium (Na), barium (Ba) and copper (Cu). The amorphous hard carbon film comprises carbon (C) as a major component, and hydrogen (H) in the range from 5 to 25 atomic % and a predetermined amount of boron (B), aluminum (Al), manganese (Mn) or molybdenum (Mo) assuming that the total atomic % of the amorphous carbon film is 100.
    Type: Application
    Filed: July 2, 2010
    Publication date: January 27, 2011
    Applicants: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroyuki Mori, Munehisa Matsui, Toshihide Ohmori, Takatoshi Shinyoshi, Yoshio Fuwa, Keiji Hayashi
  • Publication number: 20090142010
    Abstract: Provided are a sintered metal material improved in sliding property and wear resistance with respect to an associated sliding member to be supported, and a sintered oil-impregnated bearing formed of this metal material. A bearing sleeve is formed by compacting a mixed metal powder composed of not less than 5 wt % and not more than 94.3 wt % of Cu powder, not less than 5 wt % and not more than 94.3 wt % of SUS powder, not less than 0.2 wt % and not more than 10 wt % of Sn powder, and not less than 0.5 wt % and not more than wt % of graphite, and then performing sintering on a compact of the mixed metal powder.
    Type: Application
    Filed: December 27, 2005
    Publication date: June 4, 2009
    Applicant: NTN CORPORATION
    Inventors: Fuyuki Ito, Kazuo Okamura, Toshihiko Tanaka
  • Publication number: 20090054277
    Abstract: There is provided a sliding member including a base body and a hard carbon coating formed on the base body to define a sliding surface for sliding contact with an opposing member under lubrication according to one embodiment of the present invention. The hard carbon coating has an outermost surface portion lower in hydrogen content than a remaining portion thereof, or an outermost coating layer lower in hydrogen content than at least one other coating layer.
    Type: Application
    Filed: October 22, 2008
    Publication date: February 26, 2009
    Inventors: Takahiro HAMADA, Makoto Kano, Yutaka Mabuchi
  • Publication number: 20080146467
    Abstract: The iron-based sintered sliding material comprises: a sintered structure which contains 10-50 wt. % copper and 1-15 wt. % carbon and has been formed by sintering a powder mixture obtained by mixing at least one of an Fe—Cu alloy powder containing copper in an amount which is the solid solubility or larger and is 5-50 wt. %, excluding 50 wt. %, and an Fe—Cu—C alloy powder containing copper in an amount which is the solid solubility or larger and is 5-50 wt. %, excluding 50 wt. %, and containing carbon in an amount of 0-5 wt. %, excluding 0 wt. %, with a graphite powder and at least one of a copper powder and a copper alloy powder; and graphite particles dispersed in the sintered sliding material in an amount of 1-14 wt. % or 3-50 vol. %.
    Type: Application
    Filed: January 26, 2006
    Publication date: June 19, 2008
    Inventor: Takemori Takayama
  • Patent number: 7030065
    Abstract: 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: Grant
    Filed: July 22, 2004
    Date of Patent: April 18, 2006
    Assignee: C&C Oil Company
    Inventor: Alan C. Lockett, Sr.
  • Patent number: 6915574
    Abstract: A multi-layer seal and washer that provide a seal between a vane stem and a casing in a turbine engine are disclosed. The seal and washer are fabricated from materials such as Teflon fibers and glass fibers and are impregnated with a polyimide resin. The seal and washer are durable and have a low coefficient of friction.
    Type: Grant
    Filed: March 29, 2001
    Date of Patent: July 12, 2005
    Assignee: General Electric Company
    Inventors: Thomas C. Mesing, Wayne R. Bowen, David B. Hester
  • Publication number: 20040180796
    Abstract: 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: Application
    Filed: March 10, 2004
    Publication date: September 16, 2004
    Applicant: Daido Metal Company Ltd.
    Inventors: Hideki Iwata, Takeshi Shindo, Kotaro Kashiyama
  • Publication number: 20040157750
    Abstract: 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: Application
    Filed: February 4, 2004
    Publication date: August 12, 2004
    Inventors: James C. Danly, James C. Danly
  • Patent number: 6767870
    Abstract: 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: Grant
    Filed: July 18, 2002
    Date of Patent: July 27, 2004
    Assignee: C&C Oil Company
    Inventor: Alan C. Lockett, Sr.
  • Patent number: 6734147
    Abstract: 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: Grant
    Filed: October 3, 1997
    Date of Patent: May 11, 2004
    Assignee: LCC County Mosquito Control
    Inventor: Richard Levy
  • Publication number: 20040014610
    Abstract: 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: Application
    Filed: July 18, 2002
    Publication date: January 22, 2004
    Applicant: C&C Oil Company, Inc.
    Inventor: Alan C. Lockett
  • Publication number: 20030092795
    Abstract: This invention provides a non-asbestos friction material excellent not only in performance at the time of braking under high loading at high temperatures but also in performance at the time of braking under low loading at low temperatures even if lead sulfide is not used in the filler. In the non-asbestos type friction material comprising a non-asbestos fiber base material, a filler and a binder, the filler comprises spherical bronze powder and artificial graphite and is free of lead sulfide.
    Type: Application
    Filed: October 1, 2002
    Publication date: May 15, 2003
    Applicant: NISSHINBO INDUSTRIES, INC.
    Inventors: Tatsufumi Miyaki, Mitsuru Kobayashi
  • Patent number: 6478894
    Abstract: At least any one of a bearing member (inner race, outer race and rolling element) is formed with a steel material containing 0.2 to 1.2 wt % of C, 0.7 to 1.5 wt % of Si, 0.5 to 1.5 wt % of Mo, 0.5 to 2.0 wt % of Cr, and 12 ppm or less of O. The bearing member is treated with carbonitriding, and thereafter, quenching and tempering so as to provide carbon concentration in the steel surface being 0.8 to 1.3 wt % and nitrogen concentration on the same being 0.2 to 0.8 wt %.
    Type: Grant
    Filed: July 22, 1999
    Date of Patent: November 12, 2002
    Assignee: NSK Ltd.
    Inventors: Nobuaki Mitamura, Kazuo Sekino, Yasuo Murakami
  • Publication number: 20020155957
    Abstract: 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: Application
    Filed: February 14, 2001
    Publication date: October 24, 2002
    Inventors: James C. Danly,, James C. Danly,
  • Patent number: 6376061
    Abstract: A composite multilayer material is described which exhibits relatively high wear and delamination resistance without impairment of the coefficient of friction in the presence of oil. The composite multilayer material contains at least one powder-form polyaramid in its overlay, the content of PTFE or of PTFE together with the other fluorothermoplastics which form the matrix material amounting to 55-90 vol. %, the content of further fillers amounting to 9.5-44.5 vol. % and the content of polyaramid amounting to 0.5-10 vol. %.
    Type: Grant
    Filed: February 26, 1999
    Date of Patent: April 23, 2002
    Assignee: Federal-Mogul Wiesbaden GmbH
    Inventor: Achim Adam
  • Patent number: 6342306
    Abstract: 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: Grant
    Filed: November 3, 1999
    Date of Patent: January 29, 2002
    Assignee: Oiles Corporation
    Inventors: Hideo Ozawa, Hiroshi Tsuji, Hirotsugu Tomita
  • Patent number: 6303545
    Abstract: The invention relates to tin sulfide- and carbon-based solid lubricants and solid lubricant combinations, methods for the production thereof as well as their use in friction liner mixtures and friction liners such as brake or clutch liners.
    Type: Grant
    Filed: October 6, 2000
    Date of Patent: October 16, 2001
    Assignee: Chemetall Ges. m.b.H.
    Inventors: Ronald Hüner, Bernhard Melcher, Roman Milczarek, Herbert Kienleitner
  • Patent number: 6245718
    Abstract: 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: Grant
    Filed: May 1, 2000
    Date of Patent: June 12, 2001
    Assignee: Bearing Sliding Inc.
    Inventors: Serhey M. Romanov, Dmitriy Romanov
  • Patent number: 6162767
    Abstract: Iron oxide functions as a wear- and cavitation-inhibiting additive in the plastic sliding layer(s) of composite bearings for oil-lubricated applications. The sliding layers predominantly consist of thermoplastic fluoropolymers. The addition of iron oxide to PTFE-based materials reduces the destruction of the sliding surface owing to the appearance of cavitation if the materials are used in the presence of oil.
    Type: Grant
    Filed: December 9, 1997
    Date of Patent: December 19, 2000
    Assignee: Glyco-Metall-Werke Glyco B.V. & Co. KG
    Inventor: Achim Adam
  • Patent number: 6093482
    Abstract: 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: Grant
    Filed: December 16, 1998
    Date of Patent: July 25, 2000
    Assignee: Daewoo Heavy Industries Ltd.
    Inventors: Hyun Cheol Park, Hong Bum Lee, Ik Hyun Oh, Hyun Kyu Shin, Kwang Soo Kim, John Hyun Park
  • Patent number: 6025306
    Abstract: Self-lubricating resin compositions including a boric acid additive and a synthetic polymer including those thermoset materials.
    Type: Grant
    Filed: September 26, 1996
    Date of Patent: February 15, 2000
    Assignee: ARCH Development Corporation
    Inventor: Ali Erdemir
  • Patent number: 6015775
    Abstract: 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: Grant
    Filed: February 4, 1998
    Date of Patent: January 18, 2000
    Assignee: Komatsu Ltd.
    Inventors: Takemori Takayama, Yoshikiyo Tanaka
  • Patent number: 5856278
    Abstract: A friction material especially for use in conjunction with aluminum alloy brake rotors containing silicon carbide particles contains 15 to 80% of a finely divided alumina abrasive, from 5 to 40% of cured organic binder, less than 5% metal in particulate form and less than 5% particulate carbon and/or graphite, from 1 to 40% of organic fiber the balance being particulate inert filler and optionally, a non-graphitic lubricant, all percentages being by volume.
    Type: Grant
    Filed: June 17, 1996
    Date of Patent: January 5, 1999
    Assignee: Ferodo Limited
    Inventor: Anthony J. Brewer
  • Patent number: 5780396
    Abstract: A sliding member excellent in cavitation resistance and friction properties which has a sliding surface composed of a resin composition comprising a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer resin and a polytetrafluoroethylene having a molecular weight of 5,000,000 to 15,000,000 and optionally a solid lubricant, wherein the proportion of the tetrafluoro-ethylene-perfluoroalkyl vinyl ether copolymer resin is 1 to 50% by volume based on the volume of the resin composition and the proportion of the solid lubricant is 0.5 to 10% by volume based on the volume of the resin composition. The addition of the solid lubricant results in an enhancement of friction properties and the use of an exfoliated graphite as the solid lubricant brings about a further enhancement of friction properties.
    Type: Grant
    Filed: January 23, 1996
    Date of Patent: July 14, 1998
    Assignee: Daido Metal Company Ltd.
    Inventors: Tadashi Tanaka, Hidehiko Tamura, Takahiro Niwa
  • Patent number: 5732322
    Abstract: 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: Grant
    Filed: May 22, 1995
    Date of Patent: March 24, 1998
    Assignee: Oiles Corporation
    Inventors: Takashi Nakamaru, Sumihide Yanase, Akihiko Okimura
  • Patent number: 5668091
    Abstract: A lubrication block, with or without a cavity, or a lubrication bag, for lubricating an ID surface of a tire and an OD surface of a plurality of pads of rotary trunnion supported equipment, such as a kiln, cooler, dryer, reactor, granulator and ball mill operating at temperatures from 100.degree. F. to 500.degree. F. or higher. The tire has inner and outer faces, and the inner face of the tire is slipped over the plurality of pads or filler bars welded to an outer shell of the rotary equipment. The lubrication block or bag is sized so as to be inserted in between the pads. The lubrication block comprises a lubricant and a solid carrier for said lubricant. The carrier is selected from the group consisting of waxes such as paraffin, polymers, copolymers such as ethylene or polyethylene glycol or mixtures thereof, and the lubricant comprises powdered carbon and a soft metal powder (e.g. copper, zinc, aluminum) or a noble metal powder (e.g. silver, copper).
    Type: Grant
    Filed: October 31, 1995
    Date of Patent: September 16, 1997
    Assignee: Christina Grinham
    Inventors: Terry Grinham, Marc Salvador
  • Patent number: 5614477
    Abstract: A mixture of graphite and diamond particles is suspended in a liquid. The mixture is applied between relatively moving metal surfaces. The diamond particles subsequently become embedded in the surface of the metal. The surface treatment and embedding by the diamond particles thereby increases the lubricity of the moving surfaces.
    Type: Grant
    Filed: September 7, 1995
    Date of Patent: March 25, 1997
    Inventors: Vladimir Kompan, Vitaly Slobodsky
  • Patent number: 5538649
    Abstract: A composition of matter for use in tribological applications, such as in mechanical seals, bearings and other sliding or rubbing components, which provides good durability and wear characteristics. The material is used in the "softer" one of two relatively sliding members which are in, or may come into, contact with each other during the relative rotation of one of the member s relative to the other. The material is a carbon or carbonaceous formed material, such as is normally used in the manufacture of a primary seal ring in a mechanical seal, and comprises an additive compound which contains at least one compound from a group consisting of neodymium fluoride, praseodymium fluoride, gadolinium fluoride and lanthanum fluoride.
    Type: Grant
    Filed: September 28, 1995
    Date of Patent: July 23, 1996
    Assignee: John Crane Inc.
    Inventors: Joseph F. Demendi, Philippe R. Malle, Yannick A. Le Neve, Xin Chen, William R. Clemens