High Modulus Filament Or Fiber Patents (Class 428/902)
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Patent number: 5589265Abstract: Aromatic polyamide staple fiber bundles of improved dispersibility in viscous matrices and production of fiber-reinforced compositesDescribed are bundles of aromatic polyamide staple fibers having a staple length of at least 1 mm which have been provided with an effective amount of an agent which enhances the cohesion of the fiber bundle.The staple fiber bundles are held together by the adhesive before mixing into a matrix material and separate into individual fibers on mixing into the matrix material. There is no need for special mixing apparatus.Type: GrantFiled: January 13, 1995Date of Patent: December 31, 1996Assignee: Hoechst AktiengesellschaftInventors: Richard Neuert, Gerhard Stein
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Patent number: 5589441Abstract: Processes are provided for forming a superconductive composite, comprising a superconductive metal oxide and a ceramic. The composite may be formed in any desired shape. Liquid nitrogen can be held around the superconductor longer and delivered in a more controlled fashion and the composite has improved resistance to shatter and thermal shock. The ceramic also provides protection from atmospheric deterioration of the superconductive oxide.Type: GrantFiled: August 19, 1994Date of Patent: December 31, 1996Assignee: The Boeing CompanyInventors: Anna L. Baker, Michael Strasik
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Patent number: 5587230Abstract: An article made from at least one network of high strength fibers and a matrix composition that includes a vinyl ester and diallyl phthalate. Preferably, the article is made from at least one prepreg element which includes at least two adjacent layers of the high strength fiber network in the vinyl ester-containing matrix composition. The prepreg element is made by applying a mixture of vinyl ester, diallyl phthalate and a carbon-carbon saturated solvent to the high strength fiber network.Type: GrantFiled: June 2, 1995Date of Patent: December 24, 1996Assignee: AlliedSignal Inc.Inventors: Leroy C. Lin, Laura G. Wilson, Ashok Bhatnagar, Hsin L. Li
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Patent number: 5582893Abstract: A spacing fabric (3), in particular velour fabric, which spacing fabric has a first and second layer (4, 5) and intermediate webs (7) connecting these layers (4, 5) and is made of a technical yarn like aramide fibre, carbon fibre, ceramic fibre, or, in particular, glass fibre, with a resetting force inherent to the intermediate webs (7) which tends to automatically keep the layers (4, 5) of the spacing fabric (3) apart, especially also after resinification. The invention proposes that, in order to control the spacing of the layers of the spacing fabric, the layers (4, 5) of the spacing fabric (3) be attached to one another so that they can be detached.Type: GrantFiled: August 31, 1993Date of Patent: December 10, 1996Inventors: Wolfgang B ottger, Friedrich H orsch
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Patent number: 5581901Abstract: A lifesaving apparatus comprising a scale usable as a life line, the scale comprising a high tensile strength wire with graduations in a longitudinal direction thereof, a drum for winding the metal wire thereonto, a casing accommodating the drum while permitting the same to rotate, a magnifying glass on the casing for allowing the graduations to be read, and a person carrying system. The high tensile strength wire of high tensile strength is formed of a stranded cable formed of a plurality of strands each having a tensile strength of at least 400 kgf/mm.sup.2 such that the high tensile strength wire is capable of suspending a person. The strands have a coat of a synthetic resin covering the strand. The person carrying system is connected to an end of the scale.Type: GrantFiled: August 30, 1994Date of Patent: December 10, 1996Assignees: M. Takahashi, T. Takahashi, R. Takahashi, M. Hashimoto, C. Yamada, K. TakahashiInventor: Masakatsu Takahashi
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Patent number: 5580626Abstract: The invention provides a tubular composite member which has a plurality of plies and a generally elongate and selectively curved axis. The plies can include helically oriented fiber components, a matrix material, and thermoplastic tubes. An intermediate layer preferably has two tri-axially braided plies arranged at selective angles relative to the member's axis and as a function of the curvature of the member. Interior and exterior plies of circumferential windings can be part of the member such that the intermediate ply is contiguous and between the interior and exterior ply. In one practice, the member can be formed into a selective shape and then cured. Alternatively, the member is formed between a thermoplastic core and a thermoplastic sheath to facilitate a secondary process of heating and bending the member into a selective axially-curved shape.Type: GrantFiled: August 18, 1995Date of Patent: December 3, 1996Assignee: Composite Development CorporationInventors: Peter A. Quigley, Stephen Briggi, Steven C. Nolet, James L. Gallagher
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Patent number: 5578358Abstract: An aramid article is disclosed having improved resistance to penetration by sharp implements. The article is woven with tough, low denier, aramid yarns in a tight plain weave configuration; and, when used in several layers, the layers are not stitched together.Type: GrantFiled: April 12, 1995Date of Patent: November 26, 1996Assignee: E. I. Du Pont de Nemours and CompanyInventors: Brian E. Foy, Louis H. Miner
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Patent number: 5578368Abstract: A fire-resistant material used in items such as sleeping bags, comforters, wearing apparel, upholstered furniture and mattress tops comprises a fiberfill batt and a layer of a fire-resistant aramid fiber contacting at least one side of the aramid fiber layer. The fiberfill batt may comprise synthetic fiber, which may be either polyester fiber or polyolefin fiber. Alternatively, the fiberfill batt may comprise natural fiber. The aramid fiber layer may comprise poly(m-phenylene isophthalamide) fiber, poly(p-phenylene terephthalamide) fiber or a blend of poly(m-phenylene isophthalamide) and poly(p-phenylene terephthalamide) fiber. The aramid fiber layer may be needle-punched, hydroentangled, or laminated to the fiberfill batt.Type: GrantFiled: July 29, 1994Date of Patent: November 26, 1996Assignee: E. I. Du Pont de Nemours and CompanyInventors: Herman H. Forsten, Michael S. Frankosky, Wo K. Kwok
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Patent number: 5578374Abstract: By poststretching, at a temperature between about 135.degree. and 160.degree. C., a polyethylene fiber, which has already been oriented by drawing at a temperature within 5.degree. C. of its melting point, an ultra high modulus, very low creep, low shrink, high tenacity polyolefin fiber having good strength retention at high temperatures is obtained. The poststretching can be in multiple stages and/or with previous annealing. The poststretching should be done at a draw rate of less than 1 second.sup.-1. Tensile modulus values over 2,000 g/d for multifilament yarn are consistently obtained for ultrahigh molecular weight-polyethylene, with tensile strength values above 30 g/d while at the same time dramatically improving creep (at 160.degree. F. (71.1.degree. C.) and 39,150 psi load) by values at least 25% lower than fiber which has not been poststretched. Shrinkage is improved to values less than 2.5% of the original length when heated from room temperature to 135.degree. C.Type: GrantFiled: February 8, 1995Date of Patent: November 26, 1996Assignee: AlliedSignal Inc.Inventors: James J. Dunbar, Sheldon Kavesh, Dusan C. Prevorsek, Thomas Y. Tam, Gene C. Weedon, Robert C. Wincklhofer
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Patent number: 5571610Abstract: A composite sheet is made of a moldable resin and reinforcement fibers, where the resin is a thermoplastic resin, thermosetting resin or mixture thereof, and the reinforcement fibers are fibers centrifuged from a rotary process fiberizer, where the composite sheet has at least 5 distinct layers of reinforcement fibers per mm of thickness. The composite sheet has at least 10 distinct layers of reinforcement fibers, and preferably at least 30 distinct layers. At least 85 percent of the reinforcement fibers are monofilaments, and the reinforcement fibers are wool glass fibers.Type: GrantFiled: December 15, 1995Date of Patent: November 5, 1996Assignee: Owens Corning Fiberglass Technology, Inc.Inventors: James E. Loftus, Michael T. Pellegrin, Patrick L. Ault, Randall M. Haines, Virgil G. Morris
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Patent number: 5567505Abstract: Means for applying a plastic finishing layer to the surface of a composite article comprising an extruded plastic-based solid body reinforced by one or more bundles of reinforcing fibers, these bundles being affixed to its surface, comprising a ring (1), the entry diameter (2) of which is greater than its exit diameter (3), the internal surface (4) of the said ring furthermore providing a decreasing variation in the internal diameter between its entry and its exit; method of applying a finishing layer, in which method these means are used, and coated composite article.Type: GrantFiled: August 14, 1995Date of Patent: October 22, 1996Assignee: Solvay (Soci et e Anonyme)Inventors: Claude Dehennau, Serge Dupont
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Patent number: 5567500Abstract: A composite web structure utilizing a thin first layer of material having a plurality of structural fibers arranged to lie essentially in a unidirectional orientation. A thin second layer of material is positioned adjacent the first layer and includes a plurality of structural fibers. First and second layers are impregnated with a matrix material for binding fibers within the first and second layers and for binding the first and second layers together. The web may be formed into a composite structure such as a honeycomb core for fabrication into a panel.Type: GrantFiled: October 13, 1995Date of Patent: October 22, 1996Assignee: Speciality Cellular Products CompanyInventors: Andrew C. Marshall, Michael L. Fellman
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Patent number: 5567535Abstract: Currently, fiber/metal laminate sheets are limited in width due to restrictions in the width of thin metal sheets available. This invention solves that problem by providing an integral splice concept and a method for manufacturing a laminate employing the inventive concept. Specifically, a fiber/metal laminate sheet is provided having at least two metal plies and at least one fiber layer. Each of the metal plies comprises at least two metal sheets which are arranged side-by-side and have sheet metal breaks therebetween. All of the sheet metal breaks lie within the integral splice. An important feature of the invention is that the sheet metal breaks in each metal ply are staggered widthwise across the laminate with respect to the sheet metal breaks in the remaining metal plies, in accordance with a predetermined metal break staggering pattern, thereby maximizing the bond engagement of the discontinuous metal plies with the adjacent fiber layers.Type: GrantFiled: May 4, 1994Date of Patent: October 22, 1996Assignee: McDonnell Douglas CorporationInventor: Richard G. Pettit
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Patent number: 5567498Abstract: An article that includes at least two networks of high strength fibers and a matrix material which impregnates the high strength fibers to form a composite element having a first plane profile and a second plane profile, wherein at least one of the first and second plane profiles has on its surface a textured pattern, and the matrix material is distributed substantially uniformly over the textured plane profile, and a method for making the composite element.Type: GrantFiled: September 24, 1993Date of Patent: October 22, 1996Assignee: AlliedSignal Inc.Inventors: Kevin S. McCarter, Steven A. Young, Pamela K. Laws
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Patent number: 5565257Abstract: An elongated wood structural member or beam for bearing predetermined loads transverse to the lengths of the members preferably includes multiple elongate wood segments bonded together with their lengths generally aligned with the beam length as in a glue-laminated members. The predetermined load corresponds to a resisting moment that produces compressive and tensile stresses in the structural member in respective compression and tension portions of the beam on opposite sides of a neutral axis. A synthetic tension reinforcement having multiple synthetic fiber strands held within a resin matrix is adhered to at least one of the wood segments in the tension portion of the structural member and is selected to be substantially capable of bearing the tensile stress produced by the resisting moment and cooperates with the wood segments to position the neutral axis within the beam.Type: GrantFiled: June 30, 1994Date of Patent: October 15, 1996Inventor: Daniel A. Tingley
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Patent number: 5565264Abstract: A protective fabric of high penetration resistance is formed from a plurality of layered, densely woven base fabrics, each formed by tightly weaving multifilament yarns to obtain a warp yarn "density" or "cover" in excess of 100% at the center of the fill yarn, and a fill yarn density or cover preferably also in excess of 75%. The yarns themselves preferably comprise a high modulus, high breaking strength yarn of materials such as Kevlar.RTM., Spectran.RTM., or Vectran.RTM.. The resultant layered fabric offers especially high penetration resistance to weapons such as ice picks and the like. Additional resistance to penetration by sharp knives is provided by interruptedly coating the base fabric with an epoxy in such a manner as to inhibit penetration while providing drapability and breathability.Type: GrantFiled: August 29, 1994Date of Patent: October 15, 1996Assignee: Warwick Mills, Inc.Inventor: Charles A. Howland
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Patent number: 5563199Abstract: A potassium hexatitanate whisker having a tunnel structure containing aluminum and niobium impurities in such amounts that Al.sub.2 O.sub.3 /Nb.sub.2 O.sub.5 molar ratio is 0.6 or higher and composite materials using the same. Also disclosed are processes for producing composite materials using the potassium hexatitanate whiskers having a tunnel structure with a light alloy or a thermoplastic resin.Type: GrantFiled: May 9, 1995Date of Patent: October 8, 1996Assignee: Titan Hogyo Kabushiki KaishaInventors: Hidefumi Harada, Yasuo Inoue, Eiji Sadanaga
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Patent number: 5561874Abstract: Playpen and crib construction which utilizes a high modulus fiber-reinforced plastic matrix tubing in the frame, said tubing being made of lightweight, high modulus fiber-reinforced plastic matrix composite tubing having a weight of 0.25 pounds or less per lineal foot and wherein said plastic matrix is a thermoplastic resin or thermoset plastic resin with a minimum modulus of 250,000 psi; a minimum tensile strength of 6,000 psi; and a glass transition temperature of at least 50.degree. C. and wherein said high modulus fiber reinforcement is selected from the group consisting of carbon fibers, aramid fibers, glass fibers, polyolefin fibers, boron fibers and mixtures thereof.Type: GrantFiled: September 16, 1994Date of Patent: October 8, 1996Inventors: Adam G. Malofsky, Bernard M. Malofsky, Paul R. Glassberg
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Patent number: 5557846Abstract: A blank material for manufacturing fiber-reinforced coatings or metal components comprising fibers made of a high-strength material and metals or metal alloys, and a process for manufacturing the blank, and for manufacturing coatings and components made therefrom. The fibers are aligned in the blank in parallel to its axis, and metal wire meshes are knitted around them, with the fibers embedded at a distance from one another. By means of high-temperature isostatic pressing, metal components can be made, through which the reinforcing fibers extend at a uniform distance.Type: GrantFiled: June 7, 1995Date of Patent: September 24, 1996Assignee: MTU Motoren- und Turbinen-Union Muenchen GmbHInventors: William Wei, Thomas Stoll
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Patent number: 5558931Abstract: A fibre reinforced thermoplastics material structure having a first layer which is fully consolidated with uniformly dispersed fibres and a second layer which is formed as an absorbent matrix.Type: GrantFiled: July 9, 1990Date of Patent: September 24, 1996Assignee: The Wiggins Teape Group LimitedInventors: Ian S. Biggs, Bronislaw Radvan
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Patent number: 5556687Abstract: A method of forming a composite structure comprises the steps of forming a radially inner portion of a preform with braided reinforcing fibers extending substantially transverse to an axis of the preform and forming a radially outer portion of the preform circumscribing the inner portion with braided reinforcing fibers extending substantially parallel to the axis of the preform. The preform is heated and consolidated in a mold into the composite structure. The composite structure has braided reinforcing fibers extending throughout a radially inner portion substantially transverse to an axis of the structure along which the structure is subject to splitting to resist splitting of the composite structure along the axis and braided reinforcing fibers extending throughout a radially outer portion substantially parallel to the axis to resist bending of the composite structure. The composite structure is particularly suitable for manufacturing a bone plate.Type: GrantFiled: October 14, 1994Date of Patent: September 17, 1996Assignee: AcroMed CorporationInventor: Carl R. McMillin
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Patent number: 5556677Abstract: The invention provides improvements to a composite member that has a plurality of plies. The improved composite member has (1) an interior ply which functions to dampen or resist sudden forces exerted on the composite member, (2) an intermediate load-carrying ply, and (3) an exterior abrasion-resistant ply. These plies have multiple, often intertwined fiber components disposed or imbedded with a matrix material, preferably Nylon-6 thermoplastic, to inhibit sharp edges during breakage. One or more of the plies typically has "bi-axial" or "tri-axially" braided fiber geometries wherein one or more fibers are helically wound about the circumference of the member. The helically oriented fibers are oriented at a selectively variable angle which influences the overall bending strength of the composite material.Type: GrantFiled: January 7, 1994Date of Patent: September 17, 1996Assignee: Composite Development CorporationInventors: Peter A. Quigley, Steven C. Nolet, James L. Gallagher
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Patent number: 5556695Abstract: Absorption retardant substances, such as water-repellents, are applied to ballistic energy absorbing fabric before the fabric is encased in a resin system to form an armor piece. Tiles made from boron carbide, other ceramic material or steel can be attached to or incorporated into the cured resin and fabric system to make composite structural armor pieces. The fabric can be made from polyaramid fibers or fiberglass fibers.Type: GrantFiled: September 26, 1989Date of Patent: September 17, 1996Assignee: ARA, Inc.Inventor: Bernard Mazelsky
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Patent number: 5554430Abstract: A boron/carbon fiber 1D laminate comprising a boron fiber layer and a carbon fiber layer having a balanced pair of carbon fiber plies embedded in a plastic resin matrix has a coefficient of thermal expansion between .+-.0.54 .mu.m/m/.degree.C. and a specific modulus greater than 8.9.times.10.sup.6 meter. A 2D boron/carbon fiber quasi-isotropic laminate having two sets of quasi-isotropic boron fiber plies, two sets of quasi-isotropic carbon fiber plies, the laminate has a Coefficient of Thermal Expansion between .+-.0.54 .mu.m/m/.degree.C. in two orthogonal directions, a specific modulus greater than 5.2.times.10.sup.6 meter in two orthogonal directions. The laminates are useful for optical mounting structures.Type: GrantFiled: December 23, 1994Date of Patent: September 10, 1996Assignee: Eastman Kodak CompanyInventors: David J. Pollatta, Thomas N. Quinzi
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Patent number: 5552208Abstract: An article made from at least one network of high strength fibers and a matrix composition that includes a vinyl ester and diallyl phthalate. Preferably, the article is made from at least one prepreg element which includes at least two adjacent layers of the high strength fiber network in the vinyl ester-containing matrix composition. The prepreg element is made by applying a mixture of vinyl ester, diallyl phthalate and a carbon-carbon saturated solvent to the high strength fiber network.Type: GrantFiled: October 29, 1993Date of Patent: September 3, 1996Assignee: AlliedSignal Inc.Inventors: Leroy C.-T. Lin, Laura G. Wilson, Ashok Bhatnagar, Hsin L. Li
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Patent number: 5552220Abstract: The pyrolytic carbon lamellar interphase is formed on the reinforcing fibers inside a chamber in which a plurality of successive cycles is performed, each cycle comprising: injecting a reaction gas in which the pyrolytic carbon precursor is selected from alkanes, excluding methane taken as a sole component, alkenes, alkynes, and aromatic hydrocarbons, and mixtures thereof; the gas is maintained inside the chamber for a first predetermined time period to form an interphase layer of controlled thickness of nanometer size; the gaseous reaction products are then evacuated during a second time period; the cycles being performed consecutively in the chamber until the thickness desired for the interphase has been obtained, thereby achieving a lamellar interphase that is highly anisotropic, whose lattice fringe texture has distorted fringes of total length (L.sub.2) not less than 4 nanometers on average with maximum values exceeding 10 nanometers.Type: GrantFiled: May 16, 1994Date of Patent: September 3, 1996Assignee: Societe Europeene de PropulsionInventors: Stephane Goujard, Pascal Dupel, Rene Pailler, Xavier Bourrat
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Patent number: 5552213Abstract: The invention relates to fiber structures in the form of refractory light-weight moldings. These fiber structures exhibit the advantage that they do not contain, or contain virtually no harmful fibers, and/or that such fibers that might still exist in the fiber structures can be readily decomposed by water or body fluids. Nevertheless, the fiber structures exhibit the advantageous thermal and mechanical properties of conventional light-weight moldings. The fiber structures according to the invention are manufactured using inorganic fibers, wherein at least 90% by weight of each fiber comprises 20-50% by weight of CaO and 50-80% by weight of Al.sub.2 O.sub.3. The rest comprises a maximum of 10% by weight of typical impurity oxides. Water or a water-containing liquid is used as the charge liquid, and conventional refractory additives may also be added to the mixture of fibers and water to be molded.Type: GrantFiled: December 30, 1994Date of Patent: September 3, 1996Assignee: Didier-Werke AGInventor: Axel Eschner
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Patent number: 5552214Abstract: A pitch-based carbon fiber reinforced composite material is improved with regard to its compressive strength and compression strain at failure by combining polyacrylonitrile-based carbon fibers. The pitch-based carbon fibers have a modulus in tension of not less than 400 GPa, a tensile strength of not less than 2000 MPa, a compressive strength as a unidirectionally reinforced composite material of 100 MPa to 800 MPa and a fiber diameter of 4 .mu.m to 15 .mu.m and the polyacrylonitrile-based carbon fibers have a modulus in tension of not less than 200 GPa, a compressive strength and compression strain at failure as a unidirectionally reinforced composite material larger than those of the pitch-based carbon fibers, and a fiber diameter smaller than that of the pitch-based carbon fibers.Type: GrantFiled: May 3, 1995Date of Patent: September 3, 1996Assignees: Nippon Steel Corporation, Nippon Steel Chemical Co., Ltd.Inventors: Kenji Kobomura, Hiromi Kimura, Hideo Osone, Mikio Shima, Michiya Hayashida, Nobuyuki Tsuji
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Patent number: 5549947Abstract: The invention provides improvements to a composite member that has a plurality of plies. The improved composite member has (1) an interior ply which functions to dampen or resist sudden forces exerted on the composite member, (2) an intermediate load-carrying ply, and (3) an exterior abrasion-resistant ply. These plies have multiple, often intertwined fiber components disposed or imbedded with a matrix material, preferably Nylon-6 thermoplastic, to inhibit sharp edges during breakage. One or more of the plies typically has "bi-axial" or "tri-axially" braided fiber geometries wherein one or more fibers are helically wound about the circumference of the member. The helically oriented fibers are oriented at a selectively variable angle which influences the overall bending strength of the composite material.Type: GrantFiled: February 3, 1994Date of Patent: August 27, 1996Assignee: Composite Development CorporationInventors: Peter A. Quigley, Steven C. Nolet, James L. Gallagher
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Patent number: 5547729Abstract: A glue laminated structural wood member for bearing a structural loads transverse includes multiple laminae bonded together and arranged according to their moduli of elasticity. In an alternative embodiment, the structural wood member includes a synthetic compression reinforcement positioned in a portion of the member subjective to compressive stresses.Type: GrantFiled: July 22, 1994Date of Patent: August 20, 1996Inventor: Daniel A. Tingley
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Patent number: 5547726Abstract: A construction element has the dimensions of formwork panel sheets of elemental concrete formwork and a thickness substantially less than at least one of its other dimensions. In terms of weight, the construction element is comprised of more than 50% plastic and less than 50% small, thin pieces of metal. The pieces of metal are distributed statistically evenly in the plastic, shorter than the construction element is thick, and preferably made of aluminum. The thermal transfer coefficient of the construction element is at least that of wood/plastic casting boards.Type: GrantFiled: April 8, 1993Date of Patent: August 20, 1996Inventor: Gerhard Dingler
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Patent number: 5545470Abstract: An anti-vandalism layer, especially for application in vehicle seats, vehicle roofs, vehicle tarpaulins, tents, inflatable structures, wall facing, and similar objects having an incisible exterior layer and subject to vandalism, includes of a knit fabric having at least in part cut-resistant fibers such as aromatic polyamide fibers, gel-spun polyethylene fibers, or glass fibers is disclosed. In at least one thread system, the knit fabric contains a wire present in a thread system projecting from the surface of the knit fabric such that during subsequent gluing of the anti-vandalism layer to, for example, a textile flat structure, gluing tends to occur on this thread system.Type: GrantFiled: March 30, 1995Date of Patent: August 13, 1996Assignees: Akzo Nobel Faser AG, H.A. Schmitz GmbHInventors: Dieter H. P. Schuster, Achim G. Fels, Herbert Spors
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Patent number: 5543212Abstract: The present invention relating to prepegs has the following constitution to achieve the above object. That is, a prepreg, comprising long reinforcing fibers [A], matrix resin [B] and a knitted fabric made from thermoplastic resin fibers [C], with the component [C] distributed near either or both of the surface layers. Moreover, the present invention relating to processes for production of prepregs has either of the following constitution to achieve the above object. That is, a process for preparing a prepreg, comprising the steps of impregnating long reinforcing fibers [A] with matrix resin [B], and bonding a knitted fabric made from thermoplastic resin fibers [C] onto one side or both sides of the intermediate product, or a process for preparing a prepreg, comprising the step of bonding matrix resin [B] formed as a film, a knitted fabric made from thermoplastic resin fibers [C] and long reinforcing fibers [A].Type: GrantFiled: November 14, 1994Date of Patent: August 6, 1996Assignee: Toray Industries, Inc.Inventors: Hiroki Oosedo, Nobuyuki Odagiri
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Patent number: 5543187Abstract: A composite material comprising a multilaminate structure of amorphous metal and ceramic laminae, and a method of making the same. The material may be formed of a high strength, low inhibitor content, amorphous metal, e.g., in a single ribbon form, or in a woven multi-ribbon sheet form having a substantially greater width than the single ribbon form, in which the amorphous metal is coated with a thin layer of high compressive strength, low temperature curing ceramic. Ceramic/amorphous metal composites of the invention are usefully employed in structural composite applications, in which the amorphous metal may be utilized as an electrically conductive structural component. Superconducting composites are also disclosed, which have potential utility in applications such as power transmission lines, generators, superconducting magnets, high speed operating switches, bolometers, high frequency communications components, and motors.Type: GrantFiled: October 11, 1994Date of Patent: August 6, 1996Inventors: Joseph P. Errico, Steven J. Hultquist
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Patent number: 5538781Abstract: An improved reinforcing fabric that is woven of alternating fiber yarns of polyaramid, carbon and glass in both the warp and the weft directions such that a fabric of superior impact, tensile, compression and flexural properties is obtained.Type: GrantFiled: November 7, 1994Date of Patent: July 23, 1996Assignee: Chrysler CorporationInventors: Nippani R. Rao, Roy H. Sjoberg
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Patent number: 5536553Abstract: There is disclosed a bullet resistant fabric which is capable of withstanding the penetration of a 9 mm or a .357 magnum bullet, has an areal density fo about 0.65 to 0.87 pound per square foot, and which is made up of a plurality of quilted together sub-plies of woven fabric having substantially no binder or matrix resin associated therewith.Type: GrantFiled: April 21, 1995Date of Patent: July 16, 1996Assignee: Safariland, Ltd., Inc.Inventors: Edward A. Coppage, Jr., Richard W. Coppage, David W. Pisenti, Richard D. Bright, David B. Strum
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Patent number: 5536562Abstract: A low-density resin impregnated ceramic article advantageously employed as a structural ceramic ablator comprising a fired preform of ceramic fibers. The fibers of the ceramic preform are coated with an organic resin film. The organic resin can be a thermoplastic resin or a cured thermosetting resin. In one embodiment, the resin is uniformly distributed within the ceramic article. In a second embodiment, the resin is distributed so as to provide a density gradient along at least one direction of the ceramic article. The resin impregnated ceramic article is prepared by providing a fired preform of ceramic fibers; immersing the preform of ceramic fibers in a solution of a solvent and an organic resin infiltrant; and removing the solvent to form a resin film on the ceramic fibers.Type: GrantFiled: March 14, 1994Date of Patent: July 16, 1996Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: Huy K. Tran, William D. Henline, Ming-ta S. Hsu, Daniel J. Rasky, Salvatore R. Riccitiello
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Patent number: 5533215Abstract: Playpen and crib construction which utilizes a high modulus fiber-reinforced plastic matrix tubing in the frame, said tubing being made of lightweight, high modulus fiber-reinforced plastic matrix composite tubing having a weight of 0.25 pounds or less per lineal foot, a tubing diameter of 0.2 to 1.2 inches, a tubing thickness of 0.03 to 10.0 inches, a single fiber angle of 20.degree. to 50.degree. and fabricated from a single tow or at least one sheet of fibers, and wherein said plastic matrix is a thermoplastic resin or thermoset plastic resin with a minimum modulus of 250,000 psi; a minimum tensile strength of 6,000 psi; and a glass transition temperature of at least 50.degree. C. and wherein said high modulus fiber reinforcement is selected from the group consisting of carbon fibers, aramid fibers, glass fibers, polyolefin fibers, boron fibers and mixtures thereof.Type: GrantFiled: August 9, 1995Date of Patent: July 9, 1996Inventors: Adam G. Malofsky, Bernard M. Malofsky, Paul R. Glassberg
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Patent number: 5527584Abstract: A non-metallic honeycomb structure wherein the thermal conductivity of the structure is increased by incorporating high thermal conductivity pitch-based carbon fibers into the non-metallic resin matrix. In addition to increasing thermal conductivity, the pitch-based carbon fibers are utilized to provide controlled directional heat conductance through the honeycomb structure.Type: GrantFiled: October 19, 1993Date of Patent: June 18, 1996Assignee: Hexcel CorporationInventors: Stephen C. Darfler, Carla Ahlstrom, Mark Caldwell
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Patent number: 5527597Abstract: A stretchable flame resistant fabric (10) formed from a series of flame resistant warp yarns (11) interwoven with a series of filling yarns (12). The filling yarns (12) comprise core yarns (15) formed from an elastic material, wrapped with a series of wrap yarns (16) formed from a flame resistant material. The stretchable flame resistant fabric (10) thus provides a desired degree of flame resistance protection, while at the same time is stretchable in one direction to provide the fabric with greater flexibility without sacrificing flame resistance protection.Type: GrantFiled: March 1, 1995Date of Patent: June 18, 1996Assignee: Southern Mills, Inc.Inventors: Michael T. Stanhope, Denise N. Statham
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Patent number: 5523034Abstract: A poly(p-phenylene terephthalamide) composition is disclosed comprising 50 to 95 weight percent PPD-T and 5 to 50 weight percent PVP along with a process for making the composition and articles made from the composition.Type: GrantFiled: January 31, 1995Date of Patent: June 4, 1996Assignee: E. I. Du Pont de Nemours and CompanyInventor: Kiu-Seung Lee
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Patent number: 5520995Abstract: A pre-impregnation has a ribbon-shaped tow of reinforcing fibers and a ribbon of thermoplastic resin laminated on the ribbon-shaped tow and fixed thereto at intervals, and the thermoplastic resin is allowed to uniformly impregnate into the ribbon-shaped tow under heat application so that a void does not take place in the ribbon-shaped tow.Type: GrantFiled: May 11, 1994Date of Patent: May 28, 1996Assignee: Yamaha CorporationInventors: Toshiharu Fukushima, Kunimasa Muroi, Kunio Hiyama
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Patent number: 5516579Abstract: A composition comprising a polyetherester resin reinforced with aromatic polyamide fibers, exhibits good adhesion between the polyetherester resin and the aromatic polyamide fibers and could be used in automotive or other high strength applications.Type: GrantFiled: February 4, 1991Date of Patent: May 14, 1996Assignee: General Electric CompanyInventors: Harold F. Giles, Jr., James R. Irish
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Patent number: 5514474Abstract: Thermodynamically stable ceramic composites are provided for use in high temperature oxidizing environments. A phosphate selected from monazites and xenotimes functions as a weak bond interphase material between the constituents of the composites. Monazite comprises a family of minerals having the form MPO.sub.4, where M is selected from the larger trivalent rare earth elements of the lanthanide series (La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, and Tb) and coupled substituted divalents and tetravalents such as Ca or Sr with Zr or Th. Xenotimes are phosphates similar to monazite where M is selected from Sc, Y, and the smaller trivalent rare earth elements of the lanthanide series (Dy, Ho, Er, Tm, Yb, and Lu).Type: GrantFiled: April 19, 1995Date of Patent: May 7, 1996Assignee: Rockwell International CorporationInventors: Peter E. D. Morgan, David B. Marshall
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Patent number: 5512351Abstract: A new prepreg material having good tack drape properties and feasible out-time and articles derived therefrom as well as processes for preparation these products are disclosed. The prepreg is prepared by impregnating inorganic fibers with a compostion comprising:(A) fine powder of a metal oxide or oxides having an average particle diameter of not larger than 1 .mu.m,(B) a soluble siloxane polymer having double chain structure,(C) a trifunctional silane compound having at least one ethylenically unsaturated double bond in the molecule thereof,(D) a organic peroxide,(E) a radically polymerizable monomer having at least two ethylenically unsaturated double bonds; and heating the impregnated fibers.Type: GrantFiled: July 6, 1994Date of Patent: April 30, 1996Assignee: Nikkiso Company LimitedInventors: Kazuo Miyamichi, Hiroyuki Nakamura
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Patent number: 5512359Abstract: An improved fiber reinforced glass composite includes a carbon-coated refractory fiber in a matrix of a black glass ceramic having the empirical formula SiCxOy where x ranges from about 0.5 to about 2.0, preferably 0.9 to 1.6 and y ranges from about 0.5 to 3.0, preferably 0.7 to 1.8. Preferably the black glass ceramic is derived from cyclosiloxane monomers containing a vinyl group attached to silicon and/or a hydride-silicon group.Type: GrantFiled: January 12, 1990Date of Patent: April 30, 1996Assignee: AlliedSignal Inc.Inventors: Roger Y. Leung, Gerald T. Stranford, Stephen T. Gonczy
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Patent number: 5512348Abstract: Armor is constructed by sewing together a multiplicity of plies of energy absorbing cloth made of polyaramid fibers with stitching thread of relatively lower tensile strength in a pattern such that, upon impact by a projectile, the stitching threads break at multiple locations in response to stresses from fibers stretched by the impact. The armor can be sewn together to form a blanket or vest garments, etc., for protection of persons from projectiles.Type: GrantFiled: April 25, 1994Date of Patent: April 30, 1996Assignee: ARA, Inc.Inventor: Bernard Mazelsky
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Patent number: 5510174Abstract: Titanium diboride (TiB.sub.2) is used as a thermally conductive, filler in thermally conductive materials. The TiB.sub.2 provides improved thermal conductivity in comparison to conventional thermally conductive, electrically insulative or thermally conductive electrically conductive fillers especially at low application pressures. The materials into which the TiB.sub.2 filler is incorporated includes elastomers, films and tapes.Type: GrantFiled: April 12, 1994Date of Patent: April 23, 1996Assignee: Chomerics, Inc.Inventor: Gary J. Litman
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Patent number: 5508093Abstract: A layered product having a first layer formed from at least one fusible binder consolidated nonwoven material, which first layer contains both carrier fibers and binder fibers. The layered product also contains a sheet material second layer which is adhered to the fusible binder consolidated nonwoven layer by an adhesive layer formed from melted binder fibers present in the surface of the nonwoven layer which faces the sheet material layer. The layered product of the invention is useful for manufacturing bituminized roofing and sealing webs.Type: GrantFiled: January 6, 1995Date of Patent: April 16, 1996Assignee: Hoechst AktiengesellschaftInventor: Frank Mehdorn
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Patent number: H1542Abstract: A composite comprising two or more layers of fiber-reinforced, crosslinked epoxy resin, wherein adjacent layers of the reinforced, crosslinked epoxy resin are interspaced with a layer of a thermoplastic polymer, which thermoplastic polymer comprises a linear polymer of carbon monoxide with one or more olefinically unsaturated compounds, wherein the monomer units originating from carbon monoxide and the monomer units originating from olefinically unsaturated compounds, are present in an alternating arrangement.Type: GrantFiled: July 20, 1994Date of Patent: June 4, 1996Assignee: Shell Oil CompanyInventors: Jacob J. Elmendorp, Johannes C. M. Gillemans