Containing At Least Two Organic Materials, E.g., Binder Plus Other Organic Material, Etc. Patents (Class 523/156)
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Patent number: 4846408Abstract: Pieces of aramid cloth impregnated with a blend of phenolic and polyvinyl butyral resins are cryogenically chilled to the point of embrittlement in a liquid nitrogen bath and then fed to a rotary impact mill to comminute the pieces into a fibrous material suitable for use in brake linings or other friction applications. The rotary impact mill is chilled by cold gaseous nitrogen from the liquid nitrogen bath, the flow of which is controlled in response to a thermocouple disposed near the mill exit.Type: GrantFiled: January 21, 1988Date of Patent: July 11, 1989Assignee: Gentex CorporationInventors: Robert A. Sallavanti, Matthew P. Curtis
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Patent number: 4831067Abstract: A method for the manufacture of shaped frictional elements is provided. The method comprises mixing a first portion of a frictional filler with from 5% to 30% of certain liquid, alkaline, phenol-formaldehyde resins; mixing a second portion of the same or a different frictional filler with a liquid ester curing catalyst for the phenyl-formaldehyde resin; intimately mixing the first and second portions; and allowing the resultant mixture to cure in a mould. A composition comprising a frictional filler, the above resin, and a curing catalyst is also provided. The disclosed method is quick and economical and is carried out at room temperature without the hazards and inconveniences associated with heated moulds.Type: GrantFiled: January 29, 1987Date of Patent: May 16, 1989Inventors: Peter H. R. B. Lemon, Michael Towey
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Patent number: 4785029Abstract: A molded resin friction material composition for automobiles or the like. This composition contains as base fibers chopped glass fibers and pulped polyamide fibers in a given compounding ratio. This composition enables to produce brake lining having a high friction coefficient, a low wear ratio, and an improved fade. The fade can be further improved by adding cryolite powder and zirconium oxide powder to the composition.Type: GrantFiled: March 9, 1987Date of Patent: November 15, 1988Assignee: Toyota Jidosha Kabushiki KaishaInventors: Toru Honma, Kenji Kakihara, Makoto Ozawa
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Patent number: 4777193Abstract: A molded resin composition of frictional material for use in clutches of automobiles or the like, comprising inorganic fiber, a resin binder, an inorganic filler and an organic filler, wherein the inorganic filler contains zirconium silicate in an amount from 0.1 to 5.0% by volume based on 100% by volume of the total composition. This composition of frictional material enables the production of clutches having excellent balanced properties between the improvement of .mu. (friction coefficient) and anti-wearing properties.Type: GrantFiled: August 20, 1987Date of Patent: October 11, 1988Assignee: Toyota Jidosha Kabushiki KaishaInventor: Harunobu Kani
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Patent number: 4775705Abstract: Non-asbestos brake pads made of reinforcing, temperature resistant, web-forming fibers such as aromatic polyamide pulp, optionally including other fibers and friction and wear modifiers is described. The brake pads have an actual density not greater than 88% and not less than a 60% theoretical density. The pads are made by the slurry process in which the pad-forming constituents are fed as a slurry into a mold, dewattered and compressed, dried to a preform then heated and pressed to consolidate the preform to substantially the finished density without completely curing the binder. The consolidated pad is then baked to fully cure the binder.Type: GrantFiled: December 19, 1986Date of Patent: October 4, 1988Assignee: T&N plcInventors: Euan Parker, Bruno Grele
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Patent number: 4758277Abstract: A friction and abrasion controlling additive for friction coating mixtures, especially for the formation of brake pad materials is provided which utilizes TiS.sub.2 as the additive.Type: GrantFiled: December 4, 1986Date of Patent: July 19, 1988Assignees: Degussa Aktiengesellschaft, Tunap Industrie Chemie GmbH - Co. Produktions KGInventors: Friedrich Spruegel, Peter Panster
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Patent number: 4748193Abstract: A composition of matter for use as a friction material having soft malleable metallic (zinc) powder therein to attenuate low frequency vibrations that produce undesirable noise during a brake application.Type: GrantFiled: September 29, 1986Date of Patent: May 31, 1988Assignee: Allied CorporationInventor: William D. Hays, Jr.
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Patent number: 4743635Abstract: A friction brake material contains fibers, graphite and a binder. All or part of the graphite is physically combined with one or more metals or alloys which are softer than steel to form a first combination or mixture. A separate combination or mixture is formed to include friction increasing fibers in a binder. Both mixtures are then combined to form the friction brake material which has an ability to cause substantially less creaking noise upon brake application as compared to differently prepared friction brake material.Type: GrantFiled: February 2, 1987Date of Patent: May 10, 1988Assignee: Sumitomo Electric Industries, Ltd.Inventors: Mitsuhiko Nakagawa, Fumiaki Nitto
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Patent number: 4735975Abstract: A friction material comprising 40 to 95% by volume of a granular material and a thermoset binder resin for binding said granular material, said granular material having been produced by binding at least one powder material with a binder resin so that at least 50% by weight of the granules has a particle size between 140 mesh on and 7 mesh pass, which has good fade resistance and wear resistance.Type: GrantFiled: July 9, 1986Date of Patent: April 5, 1988Assignee: Sumitomo Electric Industries, Ltd.Inventors: Kouichi Iwata, Hiroshi Asano
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Patent number: 4722950Abstract: A composition of material for use as a friction material for a brake lining wherein steel fiber is the only metallic ingredient and the holding matrix is formed by rubber particles and phenolic resin. The holding matrix being strengthened by a reaction of the resin with calcium hydroxide. When the steel fiber comprises from 25-48% by weight of the total mixture and the rubber particles and phenolic resin comprise 17-25% by weigh of the total mixture, a sufficient structural unity is produced for the resulting friction material to withstand dynamic loading experienced during a brake application.Type: GrantFiled: July 7, 1986Date of Patent: February 2, 1988Assignee: Allied CorporationInventor: Michael E. Miller
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Patent number: 4722949Abstract: A non-asbestos friction composition capable of manufacturing in dry process is disclosed characterized in that, to a composition used 1 to 10 vol. % of aramid fiber pulp and 10 to 40 vol. % of inorganic fibers and added with binder resin and friction modifier, 1 to 6 vol. % of cork powder is added as a processing aid.Type: GrantFiled: October 31, 1986Date of Patent: February 2, 1988Assignees: Akebono Brake Industry, Co., Ltd., Akebono Research and Development Centre Ltd.Inventors: Kazuya Horiguchi, Kazushige Kiba
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Patent number: 4678818Abstract: A friction brake material contains fibers, graphite and a binder. All or part of the graphite is physically combined with one or more metals or alloys which are softer than steel to form a first combination or mixture. A separate combination or mixture is formed to include friction increasing fibers in a binder. Both mixtures are then combined to form the friction brake material which has an ability to cause substantially less creaking noise upon brake application as compared to differently prepared friction brake material.Type: GrantFiled: November 19, 1985Date of Patent: July 7, 1987Assignee: Sumitomo Electric Industries, Ltd.Inventors: Mitsuhiko Nakagawa, Fumiaki Nitto
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Patent number: 4672082Abstract: A friction material particularly useful for vehicle brakes comprises a friction material body including a plurality of steel fibers. Each steel fiber includes at least 0.07% by weight of sulphur, at least 0.10% by weight of phosphorus, or at least 0.15% by weight of both sulphur and phosphorus. The friction material exhibits high friction coefficients and less abrasion with respect to materials against which it bears as compared to conventional wear materials utilizing steel fibers.Type: GrantFiled: November 7, 1985Date of Patent: June 9, 1987Assignee: Sumitomo Electric Industries, Ltd.Inventors: Mitsuhiko Nakagawa, Fumiaki Nitto
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Patent number: 4665108Abstract: A friction material having particular use in brake pads for motor vehicles. The material includes iron powder as its chief constituent. In addition, the material contains phosphorous (P) of 0.02% or more of sulfur (S) of 0.02% or more or combined P and S of 0.03% or more.Type: GrantFiled: November 8, 1985Date of Patent: May 12, 1987Assignee: Sumitomo Electric Industries, Ltd.Inventors: Mitsuhiko Nakagawa, Fumiaki Nitto
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Patent number: 4663368Abstract: A non-asbestos clutch facing has an actual density such that the facing is permeable to air. The clutch facing is preferably a moulded facing containing short reinforcing fibres and having an actual density not greater than 90% of theoretical.The facing may be made by a technique in which a pre-form is prepared, moulded to the desired density and then cured under a pressure such as not to cause substantial further density change.Type: GrantFiled: March 4, 1985Date of Patent: May 5, 1987Assignee: Turner & Newall PLCInventors: John D. Harding, Keith D. Dolbear
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Patent number: 4657951Abstract: The invention provides a friction member having high heat resistance and wearing resistance useful as a brake shoe or brake block in traffic vehicles and industrial machines. The friction member is prepared by consolidating a fibrous base material, e.g. asbestos, with a resinous binder which is a phenolic resin modified with an organopolysiloxane which characteristically comprises, in a molecule, at least one tetrafunctional siloxane unit of the formula SiO.sub.2 and/or at least one trifunctional siloxane unit of the formula R.sup.1 SiO.sub.1.5, in which R.sup.1 is a substituted or unsubstituted monovalent hydrocarbon group having 1 to 8 carbon atoms.Type: GrantFiled: February 10, 1986Date of Patent: April 14, 1987Assignees: Shin-Etsu Chemical Co, Ltd., Gun-ei Chemical Industry Co., Ltd.Inventors: Mitsuhiro Takarada, Hiroshi Ishii, Yutaka Arai, Takashi Hamano
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Patent number: 4656203Abstract: Low density friction products composed of non-asbestos reinforcing fibers embedded in a matrix of binder material, optionally including friction and wear modifiers, are described in which the actual density of the product is less than 72% of the theoretical density. Clutch facings of this density exhibit improved wear characteristics, lower inertia and increased burst strength.Type: GrantFiled: March 4, 1985Date of Patent: April 7, 1987Assignee: Turner & Newall PlcInventor: Euan Parker
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Patent number: 4654381Abstract: The compositions of friction element for molding and the friction element for molding formed from the composition characterizing by addition of any one or more than two of the cermet powder (A) contained 75-50% of the mixed carbon and 25-50% of the alloy of stainless and iron series, the cermet powder (B) contained 75-50% of the mixed carbon and 25-50% of the alloy of tungsten and iron and/or the alloy of molybdenum and iron series or the cermet powder (E) of 75-50% of the mixed carbon and 25-50% of metal iron series, in range of 15-50%.Type: GrantFiled: July 3, 1985Date of Patent: March 31, 1987Inventors: Won H. Kang, Ki H. Chung
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Patent number: 4617165Abstract: A composition of material for use as a friction material in a brake and its method of manufacture. Liquid double salts of dibasic and monobasic (ammonium-potassium hydrogen) phosphoric acid (DSP) is added to a dry mixture of reinforcing fiber, friction modifiers, fillers and phenolic resin to create a high viscosity slurry. Thereafter, a metallic (magnesium) oxide and para formaldehyde (para) are added to the slurry. Molds which have been previously heated are filled with the slurry and any excess removed. The metallic oxide reacts with the DSP and the para reacts with the phenolic resin to create a two binder matrix for holding the reinforcing fiber, friction material and fillers in a fixed relationship corresponding to the shape of a brake pad. The brake pads are removed from the molds and transported to a ventilated chamber where the internal curing proceeds at or near ambient temperature to complete the manufacture of the brake pad.Type: GrantFiled: May 13, 1985Date of Patent: October 14, 1986Inventors: Peter H. S. Tsang, Joseph P. Coyle, Seong K. Rhee
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Patent number: 4617162Abstract: Method for the production of friction linings, in which a mixture of fibers and wetting agents with water, in a fiber:water-mixture ratio from about 1:3 to 1:7, in the presence of plastifying components, is homogenized, the so formed plastic mass is shaped into a formed body, the formed body is dried, and then strengthened and hardened under heat and pressure. According to a variation, additives are first intensively mixed in after homogenization of the mixture containing fibers, wetting agent, plastifying component and water. The plastifying component may be a pectin, a polysaccharide, a vegetable glue or a viscose solution, in particular algin or gum arabic. Moreover, the plastifying component may be a colloid, in particular an aqueous colloid. It may also be a fiber colloid. In that case, it is preferred for the fiber colloid content to be greater than about 30% by weight.Type: GrantFiled: December 7, 1981Date of Patent: October 14, 1986Assignee: Rex Patent Graf von Rex GmbH & Co KGInventors: Wolff G. von Rex, Hans Fetzer
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Patent number: 4508855Abstract: A friction material suitable for use as a bearing, comprising:(a) 20-40 weight percent phenolic resin;(b) 5-15 weight percent graphite;(c) 0.5-3.5 weight percent carbon black;(d) 40-60 weight percent of a non-asbestos containing refractory fiber comprising at least 25 wt. % CaO and 35 wt. % SiO.sub.2 ; and(e) 4-10 weight percent acrylic fiber.Type: GrantFiled: July 6, 1984Date of Patent: April 2, 1985Assignee: Manville Service CorporationInventor: Walter B. Peters
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Patent number: 4505963Abstract: A semi-metallic friction pad subjected to rust preventive treatment, sides of which are applied with a heat-proof binder solution added with rust proof metallic powder therein. The rust proof metallic powder is single or mixed powder of stainless steel, aluminum or aluminum alloy, nickel or nickel alloy and chrome or chrome alloy. The heat-proof binder solution is a heat-proof resin solution of phenol resins, epoxy resins, melamine resins or silicon resins.Type: GrantFiled: April 12, 1983Date of Patent: March 19, 1985Assignee: Akebono Brake Industry Co., Ltd.Inventor: Osao Ogiwara
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Patent number: 4497915Abstract: Molding composition containing(a) 2,4,5-triketoimidazolidine precondensates containing terminal oxamide ester, urethane and/or isocyanate groups and(b) customary organic and/or inorganic fillers, which contains the triketo compound (a) in the form of an amorphous precondensate as a reactive filler and(c) at least one further reactive component of a binder from the group consisting of phenolic resins, amine resins, epoxide resins, polyester resins, hydrocarbon resins containing functional groups and/or polymerization resins containing functional groups; their use for manufacturing radiation-, light- and/or heat-resistant and/or abrasion-resistant shaped articles.Type: GrantFiled: August 31, 1982Date of Patent: February 5, 1985Assignee: Hoechst AktiengesellschaftInventors: Ernst Horoldt, Kurt Kraft, Jurgen Ritz
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Patent number: 4483947Abstract: Molding composition containing(a) 2,4,5-triketoimidazolidine precondensates containing terminal oxamide ester, urethane and/or isocyanate groups and(b) customary organic and/or inorganic fillers, which contain the triketo compound a) as a reactive filler in the form of a composite of a.sub.1) a 2,4,5-triketoimidazolidine precondensate pulp and a.sub.2) a pulp of other fiber-forming polymers or, instead of this pulp a.sub.Type: GrantFiled: August 31, 1982Date of Patent: November 20, 1984Assignee: Hoechst AktiengesellschaftInventors: Franz Jakob, Ernst Horoldt
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Patent number: 4477605Abstract: A pad-type friction material containing an inorganic fibrous material, a binder, zinc oxide and molybdenum sulfide. It contains no asbestos. The preferred fibrous material is wollastonite or a mixture of wollastonite and glass.Type: GrantFiled: March 21, 1983Date of Patent: October 16, 1984Assignee: Borg-Warner CorporationInventors: Howard S. Okubo, Clarence E. Albertson, Roger K. Nibert
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Patent number: 4476256Abstract: A friction material for brake linings is formed using a polystilbazole resin (3-16% by weight) to provide the matrix for the material. The balance of the material is filler material such as steel wool, metal powders, carbon, ceramic powders, and friction modifiers. The lining is produced by mixing the ingredients and hot pressing the mixture at temperatures which promote the flow and cure of the resin, and at pressures which produce a material of suitable density.Type: GrantFiled: January 23, 1984Date of Patent: October 9, 1984Assignee: Rockwell International CorporationInventor: Charles L. Hamermesh
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Patent number: 4474905Abstract: Chemically reactive liquids such as catalyzed monomers and prepolymers are mixed with finely divided solids to form a homogeneous blend by chilling the liquid to a temperature below its solidification point, forming it into finely divided solidly frozen particulates, chilling the finely divided solids to a temperature below the solidification temperature of the reactive liquid and mixing the materials together without allowing the temperature to rise to the liquid solidification point. The admixture may then be formed into a permanent shape by warming to a temperature whereat the frozen liquid melts and the liquid is caused to react.Type: GrantFiled: February 24, 1983Date of Patent: October 2, 1984Assignee: General Technology Applications, Inc.Inventors: Albert F. Hadermann, Paul F. Waters, Jerry C. Trippe
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Patent number: 4465796Abstract: A friction lining suitable for brakes, clutches etc. comprises mineral fibres which contain alumina, Al.sub.2 O.sub.3, silica, SiO.sub.2, and lime, CaO. The mineral fibres have a percentage by weight of alumina, Al.sub.2 O.sub.3, of between 18% and 25%, a percentage by weight of silica, SiO.sub.2, of between 38% and 45% and a percentage by weight of lime, CaO, of between 23% and 33% and preferably of the order of 27%. Moreover, the mineral fibres contain iron oxide, Fe.sub.2 O.sub.3, in a proportion by weight of between 0.5% and 1%, alkali metal oxides, Na.sub.2 O and K.sub.2 O, in a proportion by weight of between 4% and 10% and magnesia, MgO, in a proportion by weight of between 0.5% and 3%.Type: GrantFiled: February 1, 1983Date of Patent: August 14, 1984Assignee: ValeoInventors: Pierre Leroy, Michel Pilache
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Patent number: 4451590Abstract: Disclosed herein is an organic friction material comprising 5 to 25% by volume of metallic fiber, 3 to 40% by volume of activated carbon, 3 to 15% by volume of carbon fiber, 7 to 47% by volume of an organic and inorganic filling material and 10 to 30% by volume of phenolic resin.Type: GrantFiled: March 21, 1983Date of Patent: May 29, 1984Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Hiroto Fujimaki, Shigetoshi Ajima, Kazuhiro Watanabe
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Patent number: 4427831Abstract: A rubber material having an excellent grip on ice comprising a mixture of an ordinary rubber and a powdered polymer, said powdered polymer having a maximum of tan .delta. at a temperature in the range of -5.degree. C. to +35.degree. C. when the tan .delta. is measured by a nonresonance, forced vibration apparatus at a frequency of 110 hertz and a heating rate of 2.degree. C./minute.Type: GrantFiled: July 30, 1981Date of Patent: January 24, 1984Assignee: Nippon Zeon Co. Ltd.Inventors: Keiji Komuro, Akio Ueda
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Patent number: 4420571Abstract: Compositions useful as friction particles comprised of tri- and/or tetrafunctional phenol, difunctional phenol, aldehyde, a protective colloid, and a reaction promoting compound. The friction particles are formulated into friction elements. A process for producing the friction particles in particulate form.Type: GrantFiled: July 13, 1982Date of Patent: December 13, 1983Assignee: Union Carbide CorporationInventors: John R. Blickensderfer, Luba A. Pacala
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Patent number: 4418115Abstract: The invention relates to a friction lining material, for use in brakes, clutches and other applications. The friction lining according to the invention contains mineral fibres, organic fibres, fillers and a binder. The organic fibres are at least partially composed of organic fibres of the crosslinkable fusible type, such as acrylic and/or modacrylic fibres. The lining formed in this way has excellent rubbing performance and wear resistance.Type: GrantFiled: August 25, 1981Date of Patent: November 29, 1983Assignee: Valeo S.A.Inventor: Michel Le Lannou
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Patent number: 4403047Abstract: An asbestos-free friction material containing "soft" glass fibers. The friction material, in a clutch or brake apparatus, is characterized by unusually smooth, quiet, vibrationless operation.Type: GrantFiled: August 29, 1980Date of Patent: September 6, 1983Assignee: Borg-Warner CorporationInventor: Clarence C. Albertson
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Patent number: 4384054Abstract: An asbestos-free friction material useful for brake linings, clutches, etc. comprising 5 to 25% by weight of a hardenable binder or binder mixture, a reinforcing fibrous material and conventional fillers, abrasives and lubricants the said reinforcing material consisting essentially of 1 to 50% by weight of diabase fibers with an average fiber length of 100 to 750 .mu.m and 1 to 44% by weight of metal fibers, metal wool or metal in the form of chips, powder or lamella, especially steel.Type: GrantFiled: October 1, 1981Date of Patent: May 17, 1983Assignee: Rutgerswerke AktiengesellschaftInventors: Klaus Moraw, Hans-Gunther Paul
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Patent number: 4381810Abstract: A tire which has an outer and an inner layer of compound in the non-skid portion of the tread thereof. The outer layer is composed of a lower rolling resistance compound than the inner layer is composed. The inner layer is composed of a compound which provides better traction than the compound of the outer layer provides.Type: GrantFiled: May 22, 1981Date of Patent: May 3, 1983Assignee: The Goodyear Tire & Rubber CompanyInventors: John M. Cady, William E. Egan
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Patent number: 4374211Abstract: The addition of aramid polymer pulp fiber to non-asbestos type friction material compositions results in a marked improvement in the flexural strength and structural integrity of preforms used in the manufacture of friction elements. The consequent handling characteristics of the preform lead to significant improvements in ease of manufacturing of the friction element.Type: GrantFiled: September 15, 1981Date of Patent: February 15, 1983Assignee: Thiokol CorporationInventors: John P. Gallagher, Philip H. Dougherty
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Patent number: 4373037Abstract: Heat-treated palygorskite clay, such as attapulgite having controlled low moisture and carbonate content, is used with steel wool or other non-asbestos fiber in asbestos-free friction material compositions such as clutch linings, brake pads, truck blocks and the like. These compositions include conventional fillers, lubricants, wear modifiers and the like in order to achieve friction and wear properties comparable to asbestos-based materials.Type: GrantFiled: May 29, 1981Date of Patent: February 8, 1983Assignee: Engelhard CorporationInventor: Frank J. Washabaugh
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Patent number: 4373038Abstract: An asbestos-free friction material useful for brake linings, clutches, etc. comprising 5 to 25% by weight of a hardenable binder or binder mixture, 1 to 70% by weight of a reinforcing fibrous material and conventional additives, the said reinforcing material consisting essentially of 2.5 to 12% by weight of aramide fibers, 6 to 25% by weight of mineral fibers and 16 to 36% by weight of steel fibers and optionally 5 to 20% by weight of powdered mica.Type: GrantFiled: October 1, 1981Date of Patent: February 8, 1983Assignee: Rutgerswerke AktiengesellschaftInventors: Klaus Moraw, Hans-Gunther Paul
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Patent number: 4371631Abstract: A sound attenuating composition for use as a molded-in backer stock between a brake backer plate and the wear stock of a brake shoe comprising approximately in percent by volume:non-fibrous organic components=15-40%fiber reinforcement=20-50%inorganic components=15-50%phenolic resin=5-10%.Type: GrantFiled: August 3, 1981Date of Patent: February 1, 1983Assignee: Manville Service CorporationInventor: Walter B. Peters
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Patent number: 4369263Abstract: A friction material useful in automobile brakes and the like, comprises as a reinforcing agent steel wool coated with a thermosetting resin such as a phenolic resole resin.Type: GrantFiled: December 15, 1980Date of Patent: January 18, 1983Assignee: Sumitomo Durez Company Ltd.Inventors: Noriaki Matsushima, Ken-ichi Noguchi, Kazuhisa Hirano
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Patent number: 4364997Abstract: A clutch facing material including strings of asbestos to which are applied a mixture of cashew dust resin and graphite which is in turn mixed with cashew dust. The graphite is inseparably contained in the mixture of cashew dust resin and graphite and, in combination with the cashew dust, provides a clutch facing material showing a high frictional coefficient even at high temperatures.Type: GrantFiled: May 19, 1981Date of Patent: December 21, 1982Assignees: Aisin Seiki Kabushiki Kaisha, Aisin Kako Kabushiki KaishaInventors: Yasunobu Yamamoto, Toshiaki Sakabe, Eizi Hamada
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Patent number: 4363884Abstract: In a non-asbestos friction material comprising ferrous metal particle and/or ferrous metal fiber, organic dust, inorganic substance, lubricant, metal powder, fibrous reinforcing material and thermosetting resin, the friction material being characterized in containing 0.01-5.0 wt. % of at least one material selected from the group consisting of boric acid, borate, phosphoric acid and phosphate as an anticorrosive component. Further, in the non-asbestos friction material containing rubber, organic friction dust, inorganic powder, lubricant, non-ferrous metal powder and/or non-ferrous fiber, fibrous reinforcing material, thermosetting resin and other friction material, the friction material characterized in containing at least one material selected from the group consisting of boric acid, borate, phosphate acid and phosphate as an anti-corrosive component and containing no ferrous component.Type: GrantFiled: March 17, 1981Date of Patent: December 14, 1982Assignee: Akebono Brake Industry Company, Ltd.Inventor: Osao Ogiwara
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Patent number: 4352750Abstract: A railroad brake shoe composition free of fiber reinforcement comprising, in percent by weight:Phenolic Resin Binder: 1-15%Carbonaceous Component: 30-60%Organic Component: 15-30%Inorganic Component: 5-35%Friction Modifiers: 1-15%Additives: 1-7%.Type: GrantFiled: August 3, 1981Date of Patent: October 5, 1982Assignee: Manville Service CorporationInventor: Frank W. Eschen
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Patent number: 4348490Abstract: A friction material wherein a heat-resistant organic fiber, which is a carbon fiber and/or a phenol fiber less than 10 mm in length, is mixed in a composition of the friction material containing a ferrous fiber and formed with a thermosetting resin binder. In particular, a friction material for braking is formed from a composition containing 5-60 wt. % of a ferrous fiber, 0.3-20 wt. % of a carbon fiber and/or a phenol fiber of less than 10 mm in length, 0.5-15 wt. % of an organic dust, 2-20 wt. % of an inorganic filler, 5-25 wt. % of lubricant, 0.2-10 wt. % of an antimony trioxide, 0-20 wt. % of a metallic powder and 3-15 wt. % of a phenol binder under heat and pressure.Type: GrantFiled: January 23, 1981Date of Patent: September 7, 1982Assignee: Akebono Brake Industry Company, Ltd.Inventor: Osao Ogiwara