Friction Element Composition Or Process Of Preparing Patents (Class 523/149)
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Publication number: 20030134935Abstract: 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: ApplicationFiled: April 26, 2002Publication date: July 17, 2003Inventor: David C. Schirmer
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Patent number: 6586373Abstract: 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: GrantFiled: November 1, 2001Date of Patent: July 1, 2003Assignee: NSK-Warner Kabushiki KaishaInventors: Makoto Suzuki, Masahiro Mori, Hideki Tatewaki, Sousuke Kawai, Hirokazu Yagi
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Patent number: 6579920Abstract: 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: GrantFiled: July 2, 2001Date of Patent: June 17, 2003Assignee: PrizmaliteInventors: David Burnett, Robert Schleifstein
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Publication number: 20030059645Abstract: 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: ApplicationFiled: September 25, 2001Publication date: March 27, 2003Inventor: Sunil K. Kesavan
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Patent number: 6534565Abstract: 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: GrantFiled: August 28, 2001Date of Patent: March 18, 2003Assignee: Delphi Technologies, Inc.Inventors: Thomas Haley Gardner, Robert Anthony Lamport
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Publication number: 20030045606Abstract: 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: ApplicationFiled: March 29, 2002Publication date: March 6, 2003Applicant: AKEBONO BRAKE INDUSTRY CO., LTD.Inventors: Satoshi Kusaka, Yosuke Sasaki
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Publication number: 20030013782Abstract: 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: ApplicationFiled: July 2, 2001Publication date: January 16, 2003Inventors: David Burnett, Robert Schleifstein
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Patent number: 6482873Abstract: A frictionally stressed plastic component, particularly an elastomer component, includes microcapsules which, when damaged, release at least one tribologically effective content substance.Type: GrantFiled: January 4, 2001Date of Patent: November 19, 2002Assignee: Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V.Inventors: Carola Beckmann, Jochen Brand
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Patent number: 6479413Abstract: 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: GrantFiled: August 30, 2000Date of Patent: November 12, 2002Inventor: Benjamin V. Booher
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Patent number: 6475614Abstract: 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: GrantFiled: December 19, 2000Date of Patent: November 5, 2002Assignee: Akebono Brake Industry Co., Ltd.Inventor: Akihiro Hikichi
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Patent number: 6455145Abstract: 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: GrantFiled: March 12, 1999Date of Patent: September 24, 2002Assignees: Aisin Kako Kabushiki Kaisha, Aisin Seiki Kabushiki KaishaInventors: Masahito Mizuno, Osamu Shimase, Katsumi Uemura, Satoshi Narazaki
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Patent number: 6423668Abstract: 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: GrantFiled: December 9, 1998Date of Patent: July 23, 2002Assignee: Toyota Jidosha Kabushiki KaishaInventors: Masatsugu Nakanishi, Masataka Kawabata, Atsushi Suzuki, Atsushi Shirasawa
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Publication number: 20020058728Abstract: 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: ApplicationFiled: November 13, 2001Publication date: May 16, 2002Applicant: NSK-WARNER K.K.Inventors: Hiroshi Takahara, Shunya Matsuda
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Publication number: 20020010230Abstract: 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: ApplicationFiled: May 31, 2001Publication date: January 24, 2002Applicant: Nisshinbo Industries, Inc.Inventor: Takeshi Yamane
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Patent number: 6284815Abstract: 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: GrantFiled: June 26, 1997Date of Patent: September 4, 2001Assignee: Akebono Brake Industry Co. Ltd.Inventors: Shigemi Sasahara, Takayuki Watanabe
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Patent number: 6265066Abstract: 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: GrantFiled: November 16, 1999Date of Patent: July 24, 2001Assignee: NSK-Warner Kabushiki KaishaInventors: Makoto Suzuki, Masahiro Mori, Hirokazu Yagi
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Patent number: 6255234Abstract: 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: GrantFiled: December 17, 1998Date of Patent: July 3, 2001Assignees: Hitco Carbon Composites, Inc., The University of ChicagoInventors: Ali Erdemir, Donald E. Busch, George R. Fenske, Sam Lee, Gary Shepherd, Gary J. Pruett
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Patent number: 6231793Abstract: 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: GrantFiled: October 26, 1998Date of Patent: May 15, 2001Inventors: Thomas Edward Strasser, William Eugene Coonce
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Patent number: 6221475Abstract: 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: GrantFiled: April 13, 1999Date of Patent: April 24, 2001Assignee: 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
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Patent number: 6194059Abstract: 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: GrantFiled: March 22, 1999Date of Patent: February 27, 2001Assignee: BorgWarner Inc.Inventor: Marc A. Yesnik
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Patent number: 6194512Abstract: 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: GrantFiled: June 28, 1999Date of Patent: February 27, 2001Assignee: Owens Corning Fiberglas Technology, Inc.Inventors: Liang Chen, Richard Wolever
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Patent number: 6191204Abstract: 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: GrantFiled: June 25, 1998Date of Patent: February 20, 2001Assignee: Caterpillar Inc.Inventor: Kristy J. Johnson
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Patent number: 6160036Abstract: 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: GrantFiled: January 18, 2000Date of Patent: December 12, 2000Assignee: Baker Hughes IncorporatedInventors: Nagesh S. Kommareddi, Lawrence J. Rzeznik
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Patent number: 6156824Abstract: 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: GrantFiled: September 21, 1998Date of Patent: December 5, 2000Assignee: Nippon Zeon Co., Ltd.Inventors: Toshiro Yamada, Kuniaki Goto, Noriyasu Ohtsuki
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Patent number: 6147138Abstract: 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: GrantFiled: June 3, 1998Date of Patent: November 14, 2000Assignee: Generis GmbHInventors: Rainer Hochsmann, Ingo Ederer
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Patent number: 6140388Abstract: 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: GrantFiled: November 23, 1998Date of Patent: October 31, 2000Assignee: National Starch and Chemical Investment Holding CorporationInventors: David R. Nass, Andrew J. Kielbania, Jr., Sharon P. Lee, Steven P. Pauls, Sr.
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Patent number: 6124393Abstract: 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: GrantFiled: March 31, 1998Date of Patent: September 26, 2000Assignee: Dainippon Ink and Chemicals, Inc.Inventors: Kazutoshi Haraguchi, Yusho Usami
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Patent number: 6110268Abstract: 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: GrantFiled: September 15, 1998Date of Patent: August 29, 2000Assignee: Daimler-Benz AktiengesellschaftInventors: Gerhard Gross, Tilmann Haug
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Patent number: 6107386Abstract: 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: GrantFiled: February 21, 1995Date of Patent: August 22, 2000Assignee: Akebono Brake Industry Co., Ltd.Inventors: Osamu Nakajima, Takashi Kudo
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Patent number: 6084034Abstract: 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: GrantFiled: March 6, 1998Date of Patent: July 4, 2000Assignee: Kinugawa Rubber Ind. Co., Ltd.Inventors: Masayoshi Miyama, Naoaki Hoshino
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Patent number: 6080230Abstract: 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: GrantFiled: November 13, 1998Date of Patent: June 27, 2000Assignee: Akebono Brake Industry Co., Ltd.Inventors: Yosuke Sasaki, Michinori Yanagi, Yuzo Todani, Tadahiro Mita
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Patent number: 6060536Abstract: 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: GrantFiled: July 21, 1997Date of Patent: May 9, 2000Assignee: NSK-Warner Kabushiki KaishaInventors: Takayuki Matsumoto, Shigeki Umezawa
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Patent number: 6013696Abstract: 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: GrantFiled: January 22, 1998Date of Patent: January 11, 2000Assignee: The Mead CorporationInventors: Larry Oather Hill, Richard S. Goodlin, Christopher Roy Mathews, Mahendra Mehta
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Patent number: 5989328Abstract: 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: GrantFiled: July 8, 1998Date of Patent: November 23, 1999Assignee: BTG, a PartnershipInventors: Robert Stahovic, Anthony J. Pecora
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Patent number: 5990234Abstract: 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: GrantFiled: July 30, 1998Date of Patent: November 23, 1999Assignee: BTG, a PartnershipInventors: Robert Stahovic, Anthony J. Pecora
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Patent number: 5969001Abstract: 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: GrantFiled: September 9, 1996Date of Patent: October 19, 1999Assignee: Dynax CorporationInventor: Satoshi Kawai
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Patent number: 5965658Abstract: 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: GrantFiled: November 12, 1996Date of Patent: October 12, 1999Assignee: R.K Carbon Fibers Inc.Inventors: W. Novis Smith, Philip Boyd
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Patent number: 5961674Abstract: 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: GrantFiled: October 2, 1997Date of Patent: October 5, 1999Assignee: 3M Innovative Properties CompanyInventors: John J. Gagliardi, Charles H. Houck
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Patent number: 5962551Abstract: 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: GrantFiled: December 19, 1997Date of Patent: October 5, 1999Assignee: Kubota CorporationInventors: Isamu Kobayashi, Kenji Higashi, Masafumi Yasuda
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Patent number: 5948479Abstract: 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: GrantFiled: August 25, 1997Date of Patent: September 7, 1999Assignee: Glyco-Metall-Werke Glyco B.V. & Co.KGInventors: Achim Adam, Horst Mann, Stefan Fuchsberger
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Patent number: 5919837Abstract: 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: GrantFiled: June 17, 1997Date of Patent: July 6, 1999Assignee: Sterling Chemicals International, Inc.Inventors: Stanley Sigmund Kaminski, Robert Ellsworth Evans
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Patent number: 5909881Abstract: 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: GrantFiled: March 20, 1997Date of Patent: June 8, 1999Assignee: Oiles CorporationInventor: Takeo Segawa
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Patent number: 5907995Abstract: 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: GrantFiled: November 24, 1997Date of Patent: June 1, 1999Assignee: Rutgers Automotive AktiengesellschaftInventors: Thomas Zimmer, Oliver Lauth, Norbert Jenniges, Ulrich Steinkamper
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Patent number: 5891933Abstract: 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: GrantFiled: April 9, 1998Date of Patent: April 6, 1999Assignee: AlliedSignal Inc.Inventors: Sunil Kesavan, Gerhard Burmester
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Patent number: 5889079Abstract: 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: GrantFiled: November 21, 1997Date of Patent: March 30, 1999Assignee: Konishi Co., Ltd.Inventors: Kenji Idemoto, Shigeru Nagasawa, Kenji Ueji, Kunihiko Asano, Toshiyuki Uenoyama
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Patent number: 5889080Abstract: 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: GrantFiled: June 13, 1997Date of Patent: March 30, 1999Assignee: Sterling Chemicals International, Inc.Inventors: Stanley Sigmund Kaminski, Robert Ellsworth Evans
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Patent number: 5889082Abstract: 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: GrantFiled: June 17, 1997Date of Patent: March 30, 1999Assignee: Sterling Chemicals International, Inc.Inventors: Stanley Sigmund Kaminski, Robert Ellsworth Evans
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Patent number: 5889081Abstract: 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: GrantFiled: January 17, 1996Date of Patent: March 30, 1999Assignee: Osaka Gas Company LimitedInventors: Hiroya Kakegawa, Tokugen Yasuda, Xiangsheng Wang
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Patent number: 5866636Abstract: 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: GrantFiled: February 28, 1997Date of Patent: February 2, 1999Assignee: Sumitomo Electric Industries, Ltd.Inventors: Fumiaki Nitto, Tatsuya Sano, Seigou Sakagami, Masanori Ibuki, Hiroya Kishimoto
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Patent number: 5834551Abstract: 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: GrantFiled: June 9, 1995Date of Patent: November 10, 1998Assignee: Dainippon Ink and Chemicals, Inc.Inventors: Kazutoshi Haraguchi, Yusho Usami