Friction Element Composition Or Process Of Preparing Patents (Class 523/149)
  • Publication number: 20030134935
    Abstract: The present invention is a composition comprised of an adhesive with particulate inclusions disposed within or along the adhesive. Adhesive/ceramic composition forms a thin, anti-skid layer along a wear surface. In preferred embodiments, adhesive is a self-leveling liquid hardening to form a flexible, compressible layer along a surface. Particulate is irregular-shaped or uniform-shaped ceramic particles. In alternate embodiments, composition is aerosolizable, thereby dispensable from a pressurized container.
    Type: Application
    Filed: April 26, 2002
    Publication date: July 17, 2003
    Inventor: David C. Schirmer
  • Patent number: 6586373
    Abstract: A wet friction material comprises a fiber base material, a filler and a binder: wherein the filler contains a disc-shaped diatomaceous earth; wherein the filler contains at least one of a filler having Mohs hardness of 8 to 9.5 and a diatomaceous earth and the binder contains a specific silicone resin binder; or wherein the binder contains another specific silicone resin binder.
    Type: Grant
    Filed: November 1, 2001
    Date of Patent: July 1, 2003
    Assignee: NSK-Warner Kabushiki Kaisha
    Inventors: Makoto Suzuki, Masahiro Mori, Hideki Tatewaki, Sousuke Kawai, Hirokazu Yagi
  • Patent number: 6579920
    Abstract: The addition of microspheres of barium titanate glass to conventional friction compositions for molding automotive and other brake elements and similar friction elements, results in substantial new and unexpected improvements with respect to the production of and processing of uniform, homogeneous molding compositions for forming the present friction elements. The formed friction pads, disks etc., have unexpectedly improved performance properties such as heat dissipation properties leading to improved, reduced wear over prolonged periods of use.
    Type: Grant
    Filed: July 2, 2001
    Date of Patent: June 17, 2003
    Assignee: Prizmalite
    Inventors: David Burnett, Robert Schleifstein
  • Publication number: 20030059645
    Abstract: A friction material matrix is described, containing a tin oxide, such as but not limited to stannous oxide or stannic oxide, and a binder system, the binder system physically or chemically binding the tin oxide. The tin oxide is preferably present in an amount in the range of about 0.3 to about 20 weight percent, based on the total weight of the friction material matrix. The tin oxide preferably has a Mohs hardness level of about 6.5. The tin oxide improves the performance behavior of a friction couple at an interface between the friction material matrix and an automotive braking element.
    Type: Application
    Filed: September 25, 2001
    Publication date: March 27, 2003
    Inventor: Sunil K. Kesavan
  • Patent number: 6534565
    Abstract: Friction materials for clutch, brake shoes and the like are formed of a paper having reduced or eliminated non-functional processing additives. The paper composition includes components selected from a group consisting of aramid pulp, aramid staple, carbon/polyacrylonitrile fibers, glass wool, potassium octatitanate, bronze wool, high surface area filter cake, graphite, amorphous carbon and cyanated phenolic resin. The paper composition may be pre-compounded to a particle size in the range of 60 to 200 mesh. Part molding may be carried out by microwave heating the paper at 250° to 55° F.
    Type: Grant
    Filed: August 28, 2001
    Date of Patent: March 18, 2003
    Assignee: Delphi Technologies, Inc.
    Inventors: Thomas Haley Gardner, Robert Anthony Lamport
  • Publication number: 20030045606
    Abstract: The invention provides a friction material containing a fibrous reinforcement, a friction modifier, and a binder as major components, which does not contain asbestos fibers but contains, as an organic friction modifier, para-, meta- and meta-para-type aramide resin dusts independently or as a mixture thereof. It is preferred to mix the para-type and m-type aramide resin dusts independently or as a mixture in an amount of 1 to 60% by volume based on the volume of the whole friction material.
    Type: Application
    Filed: March 29, 2002
    Publication date: March 6, 2003
    Applicant: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Satoshi Kusaka, Yosuke Sasaki
  • Publication number: 20030013782
    Abstract: The addition of microspheres of barium titanate glass to conventional friction compositions for molding automotive and other brake elements and similar friction elements, results in substantial new and unexpected improvements with respect to the production of and processing of uniform, homogeneous molding compositions for forming the present friction elements. The formed friction pads, disks etc., have unexpectedly improved performance properties such as heat dissipation properties leading to improved, reduced wear over prolonged periods of use.
    Type: Application
    Filed: July 2, 2001
    Publication date: January 16, 2003
    Inventors: David Burnett, Robert Schleifstein
  • Patent number: 6482873
    Abstract: A frictionally stressed plastic component, particularly an elastomer component, includes microcapsules which, when damaged, release at least one tribologically effective content substance.
    Type: Grant
    Filed: January 4, 2001
    Date of Patent: November 19, 2002
    Assignee: Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V.
    Inventors: Carola Beckmann, Jochen Brand
  • Patent number: 6479413
    Abstract: A composite friction unit of a three dimensional composite body is formed of a substantially uniform array of predominately glass strands of primary reinforcing fibers in matrix of phenolic resin material, the reinforcing fibers in the form of fabric distributed throughout the body forming a friction unit having a predetermined size and configuration and uniform distribution and alignment of fibers throughout. An alternate friction unit includes a substantially rigid backing co-pultruded in forming the unit. The units are produced in a pultrusion process wherein the reinforcing fibers and matrix are pulled through a forming die.
    Type: Grant
    Filed: August 30, 2000
    Date of Patent: November 12, 2002
    Inventor: Benjamin V. Booher
  • Patent number: 6475614
    Abstract: In a friction material including a fibrous reinforcement, a friction modifier and a binder, no whisker-like potassium titanate fiber is contained, but powdery or flaky potassium titanate with an aspect ratio of not higher than 3 is mixed as a friction component. The diameter of the powdery or flaky potassium titanate is preferably in a range of from 0.05 &mgr;m to 150 &mgr;m. In addition, the powdery or flaky potassium titanate is preferably subjected to surface treatment with a silane coupling agent, phenolic resin, or the like. Further, fibrous potassium titanate may be mixed at a volume ratio of not higher than 30% with respect to the powdery or flaky potassium titanate. The fibrous potassium titanate is a by-product when the powdery or flaky potassium titanate is produced and which has a length of not longer than 5 &mgr;m or a diameter of not smaller than 3 &mgr;m.
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: November 5, 2002
    Assignee: Akebono Brake Industry Co., Ltd.
    Inventor: Akihiro Hikichi
  • Patent number: 6455145
    Abstract: This invention intends to provide a friction member which is high in an anti-fading character and low in mate attacking character. For such purpose, in a friction member composed of a fiber containing substrate, a bonding agent and a filling agent, an accumulated blow hole rate of blow holes having hole diameter not less than 3.5 &mgr;m is selected to be not larger than 2 volume %, and an accumulated blow hole rate of blow holes having hole diameter from 0 to 3.5 &mgr;m is selected to be not less than 3 volume %.
    Type: Grant
    Filed: March 12, 1999
    Date of Patent: September 24, 2002
    Assignees: Aisin Kako Kabushiki Kaisha, Aisin Seiki Kabushiki Kaisha
    Inventors: Masahito Mizuno, Osamu Shimase, Katsumi Uemura, Satoshi Narazaki
  • Patent number: 6423668
    Abstract: A friction material exhibiting a great coefficient of friction, as compared to that of the conventional friction material, which is produced with the use of an organic paper-like substrate. The friction material is composed of the paper-like substrate of a fibrous material, and an inorganic binder with which said substrate is impregnated. When friction is produced, the inorganic binder exhibits friction characteristics so that a great coefficient of friction can be effected, as compared to the cases organic binders such as phenol resin are used.
    Type: Grant
    Filed: December 9, 1998
    Date of Patent: July 23, 2002
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Masatsugu Nakanishi, Masataka Kawabata, Atsushi Suzuki, Atsushi Shirasawa
  • Publication number: 20020058728
    Abstract: A method for manufacturing a wet type friction material obtained by immersing binding agent into a paper body comprised of fiber base material and filler, comprises a first immersing step for immersing first binding agent into said paper body, a second immersing step for immersing second binding agent into said paper body after said first immersing step and a heating and curing step for heating and curing said paper body into which said first and second binding agents were immersed.
    Type: Application
    Filed: November 13, 2001
    Publication date: May 16, 2002
    Applicant: NSK-WARNER K.K.
    Inventors: Hiroshi Takahara, Shunya Matsuda
  • Publication number: 20020010230
    Abstract: The present invention relates to a friction material and, in particular, provides a process for producing a friction material used in, for example, brakes of trucks, cars or the like and also provides a friction material obtained by the process. The process for producing a friction material containing a fiber component, a binder component and a filler component from raw materials of a friction material through at least a mixing step, a molding step and a heat-treating step, wherein the mixing of the raw materials in the mixing step is carried out by stirring and mixing the raw materials under heating in a dry system at a temperature where the binder is softened.
    Type: Application
    Filed: May 31, 2001
    Publication date: January 24, 2002
    Applicant: Nisshinbo Industries, Inc.
    Inventor: Takeshi Yamane
  • Patent number: 6284815
    Abstract: A non-asbestos friction material is disclosed, which comprises a non-asbestos fibrous reinforcement, a thermosetting resin binder, and a filler as the main components, wherein the fibrous reinforcement is a combination of plural kinds of non-asbestos fibers and contains sepiolite fibers, cellulose fibers, and an acryl pulp as the fibrous reinforcement. The friction material of the present invention is excellent in fade characteristics, stability of effectiveness, etc., and low in cost.
    Type: Grant
    Filed: June 26, 1997
    Date of Patent: September 4, 2001
    Assignee: Akebono Brake Industry Co. Ltd.
    Inventors: Shigemi Sasahara, Takayuki Watanabe
  • Patent number: 6265066
    Abstract: A wet friction material contains a fibrous base, a filler, a friction adjuster and a binder. The binder contains a material having siloxane bond. For example, the binder is a product of hardening of a hydrolytic solution of a silicon alkoxide.
    Type: Grant
    Filed: November 16, 1999
    Date of Patent: July 24, 2001
    Assignee: NSK-Warner Kabushiki Kaisha
    Inventors: Makoto Suzuki, Masahiro Mori, Hirokazu Yagi
  • Patent number: 6255234
    Abstract: A carbon/carbon composite in which a carbon matrix containing a controlled amount of boron or a boron compound is reinforced with carbon fiber exhibits a low coefficient of friction, i.e., on the order of 0.04 to 0.1 at temperatures up to 600° C., which is one of the lowest frictional coefficients for any type of carbonaceous material, including graphite, glassy carbon, diamond, diamond-like carbon and other forms of carbon material.
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: July 3, 2001
    Assignees: Hitco Carbon Composites, Inc., The University of Chicago
    Inventors: Ali Erdemir, Donald E. Busch, George R. Fenske, Sam Lee, Gary Shepherd, Gary J. Pruett
  • Patent number: 6231793
    Abstract: A method for rapidly manufacturing “green-state” ceramic matrix composite components, components made from this method, and a resin/catalyst precursor mixture used in the method. The method includes manufacturing a component by preparing the precursor mixture by mixing a requisite quantity of a polymer-derived ceramic precursor resin, a catalyst, a discontinuous reinforcing fiber and filler material, and then loading this precursor mixture in a preheated mold. The precursor mixture then is cured in the mold to form the component which is porous. Thereafter, the component is reinfilitrated with a resin to at least partially fill the pores of the component. This method yields a ceramic matrix composite component that is cured in approximately one minute as well as a resin/catalyst precursor mixture that can be stored in excess of four weeks.
    Type: Grant
    Filed: October 26, 1998
    Date of Patent: May 15, 2001
    Inventors: Thomas Edward Strasser, William Eugene Coonce
  • Patent number: 6221475
    Abstract: A friction element is made out of a composite material comprising carbon fiber reinforcement and a matrix which, at least in the vicinity of the or each friction face, comprises: a first phase in the vicinity of the reinforcing fibers and containing pyrolytic carbon obtained by chemical vapor infiltration; a refractory second phase of carbon or ceramic obtained at least in part by pyrolysis of a liquid precursor; and a silicon carbide phase obtained by siliciding, for example. At least in the vicinity of the or each friction face, the composite material is preferably constituted, by volume, at least as follows: 15% to 35% carbon fibers; 10% to 55% first matrix phase containing pyrolytic carbon; 2% to 30% second matrix phase of refractory material; and 10% to 35% silicon carbide. The invention is applicable in particular to braking for rail or road vehicles.
    Type: Grant
    Filed: April 13, 1999
    Date of Patent: April 24, 2001
    Assignee: Societe Nationale d'Etude et de Construction de Moteurs d'Aviation - S.N.E.C.M.A.
    Inventors: Jean-Marc Domergue, Jean-Michel Georges, Michel Laxague
  • Patent number: 6194059
    Abstract: The present invention relates to a two-ply fibrous base material comprising a primary layer having elastic and oil absorbent characteristics bonded to a secondary layer having high temperature resistance and high strength characteristics. The two-ply fibrous base material, when impregnated with a phenolic, modified phenolic silicone, modified silicone or silicone/phenolic resin blends, provides a friction material exhibiting good friction and wear characteristics and is especially useful in high energy end use applications.
    Type: Grant
    Filed: March 22, 1999
    Date of Patent: February 27, 2001
    Assignee: BorgWarner Inc.
    Inventor: Marc A. Yesnik
  • Patent number: 6194512
    Abstract: An aqueous phenol/formaldehyde resole resin is disclosed having improved speciation. An aqueous extended phenol/formaldehyde and polycarboxylic acid co-binder and low emissions process for making the same are also disclosed. Glass fiber products may be prepared using the co-binder.
    Type: Grant
    Filed: June 28, 1999
    Date of Patent: February 27, 2001
    Assignee: Owens Corning Fiberglas Technology, Inc.
    Inventors: Liang Chen, Richard Wolever
  • Patent number: 6191204
    Abstract: This thermoplastic composition and process for making articles of the same includes a thermoplastic matrix that includes a resin and filler materials wherein the filler materials includes a combination of fibers, at least one lubricant, and thermally conductive material, for improving tribological performance of thermoplastic materials. In the alternative, a thermally conductive lubricant may be substituted for the combination of the lubricant and the thermally conductive material.
    Type: Grant
    Filed: June 25, 1998
    Date of Patent: February 20, 2001
    Assignee: Caterpillar Inc.
    Inventor: Kristy J. Johnson
  • Patent number: 6160036
    Abstract: High concentration drag reducing agents may be prepared by microencapsulating polymer drag reducing agent. The microencapsulation may be performed prior to, during, or after the polymerization of monomer into effective drag reducing polymer. If encapsulation is done before or during polymerization, a catalyst may be present, but little or no solvent is required. The result is very small scale bulk polymerization within the microcapsule. The inert capsule or shell may be removed before, during or after introduction of the microencapsulated drag reducer into a flowing liquid. No injection probes or other special equipment is expected to be required to introduce the drag reducing slurry into the liquid stream, nor is grinding (cryogenic or otherwise) of the polymer necessary to form a suitable drag reducing agent.
    Type: Grant
    Filed: January 18, 2000
    Date of Patent: December 12, 2000
    Assignee: Baker Hughes Incorporated
    Inventors: Nagesh S. Kommareddi, Lawrence J. Rzeznik
  • Patent number: 6156824
    Abstract: There is provided a lubricating polymer-containing liquid which comprises a film-forming lubricating polymer, preferably a fluoropolymer, and a liquid medium predominantly comprised of cyclic hydrofluorocarbon wherein said lubricating polymer is dissolved or dispersed. A lubricative polymer film of good performance is formed by coating, for example, a magnetic recording hard disk, an ink jet recording head or a cleaning blade of an image-forming device with the lubricating polymer containing liquid, and then removing the liquid medium.
    Type: Grant
    Filed: September 21, 1998
    Date of Patent: December 5, 2000
    Assignee: Nippon Zeon Co., Ltd.
    Inventors: Toshiro Yamada, Kuniaki Goto, Noriyasu Ohtsuki
  • Patent number: 6147138
    Abstract: A method for the manufacturing of parts, especially molds or cores, by a deposition technique, comprising the steps of: depositing a layer of a pourable composite material containing particles with a binder material coating, into a process area of a defined length and width fitting to the dimensions of a part to be manufactured; applying a moderating agent onto said composite material layer in a selective sub-area of said process area; inducing energy to solidify said selective sub-area, respectively the area of said process area void of said moderating agent; repeating the aforementioned steps; and separating of solidified composite material from non-solidified composite material.
    Type: Grant
    Filed: June 3, 1998
    Date of Patent: November 14, 2000
    Assignee: Generis GmbH
    Inventors: Rainer Hochsmann, Ingo Ederer
  • Patent number: 6140388
    Abstract: Abrasive articles comprising a cured thermosetting binder and abrasive grains. The binder is prepared with a poly-functional molecule comprising at least two functional groups selected from the group consisting of carboxyl and anhydride, and a crosslinking agent which is selected from the group consisting of a mono(hydroxyalkyl)urea comprising a single urea group, a single hydroxyl group, and at least two carbon atoms disposed between the urea group and the hydroxyl group, and 2-oxazolidone. The abrasive articles comprise bonded, nonwoven or coated abrasive articles.
    Type: Grant
    Filed: November 23, 1998
    Date of Patent: October 31, 2000
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: David R. Nass, Andrew J. Kielbania, Jr., Sharon P. Lee, Steven P. Pauls, Sr.
  • Patent number: 6124393
    Abstract: A composite of a thermosetting resin with a metallic oxide, prepared by a process which comprises subjecting a metal alkoxide containing a silicon alkoxide and/or a low condensate thereof to hydrolysis and polycondensation in a solution of a phenolic resin and/or thermosetting resin containing a phenolic resin while effecting the removal of the solvents and/or curling reaction of the resins to incorporate a particulate metallic oxide having an average particle diameter of from 0.01 to 5 .mu.m homogeneously in the thermosetting resin with a good interfacial wettability without causing macroscopic phase separation, as well as a process for the preparation of such a composite of a thermosetting resin with a metallic oxide and a process for the preparation of a crack-free molded composite product. A tribological material such as bearing, brake and clutch material includes such a composite as an essential constituent.
    Type: Grant
    Filed: March 31, 1998
    Date of Patent: September 26, 2000
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Kazutoshi Haraguchi, Yusho Usami
  • Patent number: 6110268
    Abstract: A friction-type member, which is suited, in particular, as a brake pad for a brake member of fiber-reinforced ceramic, and a method for manufacturing such a brake pad. A mixture is initially prepared from at least carbon particles and metal particles, if indicated, with the addition of polymer binding agents suited for pyrolysis; of hard material particles, such as silicon carbide or titanium carbide as abradants; and of solid lubricants, such as molybdenum sulphide or graphite, and subsequently cold-pressed into green compacts. Sintering is then carried out under vacuum or protective atmosphere, the organic binding agent concentrations initially being pyrolized, and the metal particles being at least partially bonded by reaction to carbon. The friction pads manufactured in this manner exhibit considerable mechanical strength, good frictional properties, as well as a high thermal loading capacity accompanied by a low rate of wear.
    Type: Grant
    Filed: September 15, 1998
    Date of Patent: August 29, 2000
    Assignee: Daimler-Benz Aktiengesellschaft
    Inventors: Gerhard Gross, Tilmann Haug
  • Patent number: 6107386
    Abstract: A friction material comprising a filler, a binder, and a lubricant, wherein a part or the whole of the filler is constituted by molybdenum trioxide. Not only is the friction material improved in anti-cracking property and anti-fading property under high-temperature and high-load conditions, but the friction material can be prevented from deterioration due to ashing.
    Type: Grant
    Filed: February 21, 1995
    Date of Patent: August 22, 2000
    Assignee: Akebono Brake Industry Co., Ltd.
    Inventors: Osamu Nakajima, Takashi Kudo
  • Patent number: 6084034
    Abstract: A urethane-resin based coating for reducing friction includes a urethane paint and a first powder. The coating is to be applied to a shaped article which is to be subjected to a heat treatment at a certain temperature after the application of the coating to the shaped article. The first powder has a melting point lower than the certain temperature and a solubility parameter which is smaller than or larger than that of the urethane paint by at least 0.5. The coating optionally further includes a second powder which has a melting point higher than the certain temperature. The coating provides the shaped article with low friction, irrespective of the coating film's thickness.
    Type: Grant
    Filed: March 6, 1998
    Date of Patent: July 4, 2000
    Assignee: Kinugawa Rubber Ind. Co., Ltd.
    Inventors: Masayoshi Miyama, Naoaki Hoshino
  • Patent number: 6080230
    Abstract: In a friction material composition containing a fiber base, and a binder, a novolak type phenolic resin having a mean molecular weight of from 3500 to 5000 is used as the binder.
    Type: Grant
    Filed: November 13, 1998
    Date of Patent: June 27, 2000
    Assignee: Akebono Brake Industry Co., Ltd.
    Inventors: Yosuke Sasaki, Michinori Yanagi, Yuzo Todani, Tadahiro Mita
  • Patent number: 6060536
    Abstract: In a method of producing a wet friction material according to the present invention, a water soluble material is dispersed into a raw paper including a fibrous base material, a filler, and a friction adjusting agent. Then, the raw paper is passed through water to dissolve the water soluble material to provide porosity. Thereafter, the raw paper is immersed with thermosetting resin, and heated and hardened to thereby produce a wet friction material.
    Type: Grant
    Filed: July 21, 1997
    Date of Patent: May 9, 2000
    Assignee: NSK-Warner Kabushiki Kaisha
    Inventors: Takayuki Matsumoto, Shigeki Umezawa
  • Patent number: 6013696
    Abstract: A method for manufacturing a heat resistant friction material which comprises forming pores in the surface of the friction material, the pores being formed with a controlled pore size, depth, pattern, orientation and distribution.
    Type: Grant
    Filed: January 22, 1998
    Date of Patent: January 11, 2000
    Assignee: The Mead Corporation
    Inventors: Larry Oather Hill, Richard S. Goodlin, Christopher Roy Mathews, Mahendra Mehta
  • Patent number: 5989328
    Abstract: The invention provides a material for making non-skid coatings, comprising: a particulate composition including wollastonite particles, cellulose particles, and diatomaceous earth particles. The invention provides a method of forming a non-skid coated substrate, comprising: providing a material for making non-skid coatings, comprising: particulate composition, the particulate composition comprising wollastonite particles, cellulose particles, and diatomaceous earth particles, providing liquid composition comprises water, fungicide, defoamer, ultra-violet light absorber and polymeric material, mixing the particulate composition and the liquid composition to form a coating composition, coating the coating composition onto a surface of a substrate to form a non-skid coated substrate.
    Type: Grant
    Filed: July 8, 1998
    Date of Patent: November 23, 1999
    Assignee: BTG, a Partnership
    Inventors: Robert Stahovic, Anthony J. Pecora
  • Patent number: 5990234
    Abstract: The invention provides a liquid composition for coating surfaces, comprising: polymer droplets dispersed in a liquid component, ultraviolet light (UV) absorber, and defoamer. The liquid component comprises water, and volatile organic solvent. The organic solvent comprises a first and a second ether. The first and the second ether are miscible with water. The UV absorber and the defoamer are dispersed in the liquid component. A preferred embodiment of the invention provides the liquid composition with a particulate composition to provide a material for superior non-skid surface coatings, such as non-skid flooring surface coatings. Thus, the invention provides a material for making non-skid coatings, comprising: a particulate composition including wollastonite particles, cellulose particles, and diatomaceous earth particles.
    Type: Grant
    Filed: July 30, 1998
    Date of Patent: November 23, 1999
    Assignee: BTG, a Partnership
    Inventors: Robert Stahovic, Anthony J. Pecora
  • Patent number: 5969001
    Abstract: A friction material for a synchronizer ring which exhibits good heat resistance, wear resistance and scorching resistance properties has 30 to 70% by weight of a carbon material, 10 to 40% by weight of a thermosetting resin, 5 to 30% by weight of metal fibers or metal particles and 5 to 40% by weight of inorganic fibers or inorganic particles, and having a porosity of 10 to 50%. The carbon is porous graphite particles of a size distribution in which not less than 50% of the entire number of said graphite particles have a particle diameter from 44 to 250 .mu.m. The thermosetting resin is a novolac type phenol resin, epoxy modified phenol resin, melamine modified phenol resin, cashew modified phenol resin, hydrocarbon resin modified phenol resin or cresol modified phenol resin.
    Type: Grant
    Filed: September 9, 1996
    Date of Patent: October 19, 1999
    Assignee: Dynax Corporation
    Inventor: Satoshi Kawai
  • Patent number: 5965658
    Abstract: The instant invention provides a non-asbestos friction material and method of making therefor having from about 2 to 20 wt % of carbonaceous fibers. The remainder of the friction material is an auxiliary material and a thermosetting resin. The carbonaceous fibers are derived from oxidized polyacrylonitrile based fibers. The wt % of bond carbon in the carbonaceous fibers is about 65 to 80.
    Type: Grant
    Filed: November 12, 1996
    Date of Patent: October 12, 1999
    Assignee: R.K Carbon Fibers Inc.
    Inventors: W. Novis Smith, Philip Boyd
  • Patent number: 5961674
    Abstract: An abrasive article, and methods of making and using same, containing an inorganic metal orthophosphate salt. The abrasive article including a coated abrasive article having a size or supersize coating layer containing an alkali metal or alkaline earth metal orthophosphate salt devoid of hydrogen. The inventive abrasive article reduces the grinding energy required while improving abrading efficiency in some cases.
    Type: Grant
    Filed: October 2, 1997
    Date of Patent: October 5, 1999
    Assignee: 3M Innovative Properties Company
    Inventors: John J. Gagliardi, Charles H. Houck
  • Patent number: 5962551
    Abstract: Particles of titanium compounds each containing crystals of at least two kinds of alkaline earth metal titanate compounds of the perovskite type represented by RTiO.sub.3 wherein R is an alkaline earth metal which crystals are joined together or joined to crystals of TiO.sub.2. The friction material having added thereinto the powder of such particles of titanium compounds shows a high coefficient of friction and a low abrasive property to adjoining materials.
    Type: Grant
    Filed: December 19, 1997
    Date of Patent: October 5, 1999
    Assignee: Kubota Corporation
    Inventors: Isamu Kobayashi, Kenji Higashi, Masafumi Yasuda
  • Patent number: 5948479
    Abstract: In accordance with the method according to the invention, for the production of the plastics overlay, first of all a paste is made of a plastics dispersion and fillers. This paste is free of organic solvents and is applied to a sintered porous metal layer. The multilayer material thus produced is then sintered. Since the use of organic solvents is dispensed with, health risks and the risk of fire are reduced. Moreover, the composite materials produced according to the invention exhibit excellent cavitation resistance. In addition to conventional lubricant-free applications, such as bearings, these composite materials may consequently be used in particular in gear pumps and shock absorbers.
    Type: Grant
    Filed: August 25, 1997
    Date of Patent: September 7, 1999
    Assignee: Glyco-Metall-Werke Glyco B.V. & Co.KG
    Inventors: Achim Adam, Horst Mann, Stefan Fuchsberger
  • Patent number: 5919837
    Abstract: Wet processed friction materials are disclosed wherein the components thereof include blends of a) fibrillated, organic, synthetic polymer, b) organic, synthetic polymer staple and c) organic, synthetic soluble polymer particles.
    Type: Grant
    Filed: June 17, 1997
    Date of Patent: July 6, 1999
    Assignee: Sterling Chemicals International, Inc.
    Inventors: Stanley Sigmund Kaminski, Robert Ellsworth Evans
  • Patent number: 5909881
    Abstract: A spherical annular seal member has a through hole in a central portion thereof and a partially convex spherical surface portion on an outer surface thereof, and is formed by compression molding a mixture consisting essentially of from 40 to 80% by weight of steel fibers or wool chops, from 3 to 20% by weight of a borosilicate glass powder, and from 15 to 50% by weight of a graphite powder.
    Type: Grant
    Filed: March 20, 1997
    Date of Patent: June 8, 1999
    Assignee: Oiles Corporation
    Inventor: Takeo Segawa
  • Patent number: 5907995
    Abstract: A continuous, multiple-stage process for thermally treating the surface of friction linings by pressing them against heated units and cooled units. The total length of the transport and pressing phases of each stage taken together corresponds to the continuous production cycle of the linings. The scorching press for carrying out the process is made of modules, so that heated and cooled units may be easily exchanged for each other. A heat insulation reduces energy tosses and keeps constant the surface temperature of the heated units.
    Type: Grant
    Filed: November 24, 1997
    Date of Patent: June 1, 1999
    Assignee: Rutgers Automotive Aktiengesellschaft
    Inventors: Thomas Zimmer, Oliver Lauth, Norbert Jenniges, Ulrich Steinkamper
  • Patent number: 5891933
    Abstract: Alkali and alkali earth metal titanates used for friction stabilization of friction materials such as, but not limited to, disk brake pads, brake drum linings, clutch disks, and other friction applications are described. Examples of suitable alkali and alkali earth metal titanates include, without limitation, potassium titanate, sodium titanate, and calcium titanate. Preferably, the alkali or alkali earth metal titanates are present in an amount from about 3 volume percent to about 25 volume percent based on the total volume of the friction material matrix.
    Type: Grant
    Filed: April 9, 1998
    Date of Patent: April 6, 1999
    Assignee: AlliedSignal Inc.
    Inventors: Sunil Kesavan, Gerhard Burmester
  • Patent number: 5889079
    Abstract: An antislipping composition for a fastener having a head portion, comprising a crosslinked polymer prepared by the polymerization of an olefinic unsaturated carboxylic acid and a compound represented by a general formula (1) given below ##STR1## where R is a hydrogen atom or a methyl group, and the sum of 1, m and n is larger than 0 and not larger than 500, except that where R is a hydrogen atom and n is zero, l+m is not 1, a liquid medium containing at least one compound selected from the group consisting of glycol ethers and glycerin, and silicon carbide particles having acute corner portions.
    Type: Grant
    Filed: November 21, 1997
    Date of Patent: March 30, 1999
    Assignee: Konishi Co., Ltd.
    Inventors: Kenji Idemoto, Shigeru Nagasawa, Kenji Ueji, Kunihiko Asano, Toshiyuki Uenoyama
  • Patent number: 5889080
    Abstract: A method for making a dry blend for use in the preparation of a friction material, a dry blend per se and dry friction materials is disclosed wherein the components thereof include a) fibrillated, organic, synthetic polymer, b) organic, synthetic polymer staple and c) organic, synthetic soluble polymer particles.
    Type: Grant
    Filed: June 13, 1997
    Date of Patent: March 30, 1999
    Assignee: Sterling Chemicals International, Inc.
    Inventors: Stanley Sigmund Kaminski, Robert Ellsworth Evans
  • Patent number: 5889082
    Abstract: A method for producing wet processed friction materials are disclosed wherein the components thereof include blends of a) fibrillated, organic, synthetic polymer, b) organic, synthetic polymer staple and c) organic, synthetic soluble polymer particles.
    Type: Grant
    Filed: June 17, 1997
    Date of Patent: March 30, 1999
    Assignee: Sterling Chemicals International, Inc.
    Inventors: Stanley Sigmund Kaminski, Robert Ellsworth Evans
  • Patent number: 5889081
    Abstract: This invention provides: (1) a hinder composition for friction materials, characterized in that it comprises a thermosetting resin and a specific organic silicon compound having phenyl groups, and (2) a friction material having as a binder composition shown in the above item (1). When used for manufacturing friction materials in the brakes and clutches for various kinds of vehicles such as automobiles, it can remarkably improve the facing and abrasion resistances of the friction material.
    Type: Grant
    Filed: January 17, 1996
    Date of Patent: March 30, 1999
    Assignee: Osaka Gas Company Limited
    Inventors: Hiroya Kakegawa, Tokugen Yasuda, Xiangsheng Wang
  • Patent number: 5866636
    Abstract: A non-asbestos friction material containing a reinforcing fiber other than asbestos, organic fillers, friction adjusting ingredients, and a thermosetting resin for binding the reinforcing fiber, the organic fillers and the friction adjusting ingredients together. The friction adjusting ingredients contain magnesia in the form of aggregated particles which are an aggregate of minute particles. The use of magnesia in the form of aggregated particles reduces low-frequency noise and squeak while keeping the attack on the mating member low and keeping high the resistance to fading and the coefficient of friction.
    Type: Grant
    Filed: February 28, 1997
    Date of Patent: February 2, 1999
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Fumiaki Nitto, Tatsuya Sano, Seigou Sakagami, Masanori Ibuki, Hiroya Kishimoto
  • Patent number: 5834551
    Abstract: The present invention provides a composite of a thermosetting resin with a metallic oxide, prepared by a process which comprises subjecting a metal alkoxide containing a silicon alkoxide and/or a low condensate thereof to hydrolysis and polycondensation in a solution of a phenolic resin and/or thermosetting resin containing a phenolic resin while effecting the removal of the solvents and/or curing reaction of the resins to incorporate a particulate metallic oxide having an average particle diameter of from 0.01 to 5 .mu.m homogeneously in said thermosetting resin with a good interfacial wettability without causing macroscopic phase separation. Thus, the present invention can provide a cured or uncured composite of a thermosetting resin with a metallic oxide which can be used as a molding material, sliding material, friction material, coating material, film-forming material, etc.
    Type: Grant
    Filed: June 9, 1995
    Date of Patent: November 10, 1998
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Kazutoshi Haraguchi, Yusho Usami