High Modulus Filament Or Fiber Patents (Class 428/902)
  • Patent number: 5279893
    Abstract: A prepreg for fiber-reinforced composite materials comprising (A) a reinforcing fiber having a modulus of elasticity of 200 GPa or more, (B) a fibrous thermoplastic resin having a modulus of elasticity of 100 GPa or less, and (C) a thermosetting matrix resin. The prepreg of the present invention does not only have excellent handling property equivalent to that of the prepreg with the conventional thermosetting resin as a matrix, but also gives excellent toughness to the resulting molded product without injuring the thermal and mechanical properties. Particularly, it has a high resistance to interlaminar fracture when exposed to impact, so that it is preferably used as a structural material for airplanes, etc.
    Type: Grant
    Filed: November 29, 1991
    Date of Patent: January 18, 1994
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Toshihiro Hattori, Takashi Murata, Kazuya Goto, Takeshi Kato, Shigetsugu Hayashi, Hisashi Tada, Masahiro Sugimori
  • Patent number: 5275873
    Abstract: An improved ballistic structure is disclosed wherein aramid filaments of the structure are maintained under tension.
    Type: Grant
    Filed: December 10, 1992
    Date of Patent: January 4, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Chitrangad
  • Patent number: 5275984
    Abstract: A composite comprising a ceramic matrix having immersed ceramic reinforcing fibers is strengthened and toughened by providing a multi-layer ceramic coating surrounding each fiber. The multiple layers in the fiber coating are not bonded to one another. As a result, the multiple layers separate from one another in the presence of an advancing crack in the ceramic matrix, thereby permitting the fibers to pull out of the matrix and avoid premature fiber breakage. The choice of materials for the fiber coating is not limited by any requirement to establish a particular type of chemical bond between the coating and the fiber. Instead, the invention relies only upon the mechanical tendency of the unbonded multiple layers in the fiber coating to separate to promote fiber pull-out from the matrix in the wake of an advancing crack.
    Type: Grant
    Filed: March 13, 1991
    Date of Patent: January 4, 1994
    Assignee: Northrop Corporation
    Inventors: Harry W. Carpenter, James W. Bohlen
  • Patent number: 5273078
    Abstract: A rod-type three-dimensional weaving method and apparatus sends weft rods from within a rod magazine between groups of warp rods consisting of a large number of warp rods disposed parallel to one another by means of rod pushers substantially continuously by automatically changing a used-up magazine with another one filled with a new set of weft rod groups. To achieve such continuous weaving, a sensor senses a point where one of the rods in the magazine reaches the preset limit for a magazine change, and a control unit acting on the signal from the sensor removes the used-up magazine and brings another magazine filled with a new set of rod groups into the rod filling position. Or the same control unit stops the rod pushers on one side and starts feeding weft rods from the opposite side by employing the magazine and rod pushers on the opposite side of the group of warp rods, with a significant reduction in the weaving time.
    Type: Grant
    Filed: June 26, 1992
    Date of Patent: December 28, 1993
    Assignee: Three-D Composites Research Corporation
    Inventors: Masahiko Kimbara, Michiya Hayashida
  • Patent number: 5273817
    Abstract: The invention provides plastic material for wrapping or carrying food such as meat and vegetables without causing propagation of bacteria and germs.The plastic material includes: a synthetic resin; and carbon fibers which are grown on fine powder of a refractory metal or a derivative thereof by thermolysis of hydrocarbons or vapor growth and plated with a metal laminate. A synthetic resin having sufficient flexibility is used as a base thereof when the plastic material is applied to a wrapping film, whereas a solid and tough synthetic resin is used when the plastic material is applied to a food-carrying member like a container or a tray. The metal laminate of the material gives excellent germicidal power to the material, and the ordered graphite structure of the carbon fibers gives sufficient strength to the material.
    Type: Grant
    Filed: October 11, 1991
    Date of Patent: December 28, 1993
    Assignee: Kitagawa Industries Co., Ltd.
    Inventor: Hiroji Kitagawa
  • Patent number: 5273822
    Abstract: A fibrous electrically-conductive filler comprises fibrous aluminum borate as a core material and a layer of a electrically-conductive substance which covers the core material or comprises fibrous aluminum borate as a core material, a layer of titanium oxide which covers the fibrous aluminum borate and a layer of a electrically-conductive substance which covers the titanium oxide layer. The fibrous electrically-conductive filler can be prepared by a process comprising the step of directly forming a layer of a electrically-conductive substance doped with antimony or fluorine on the surface of fibrous aluminum borate, or the steps of forming, on the surface of the fibrous aluminum borate, an intermediate layer of titanium oxide in an amount ranging from 2 to 50% by weight on the basis of the weight of the fibrous aluminum borate and then forming a layer of a electrically-conductive substance doped with antimony or fluorine on the surface of fibrous aluminum borate.
    Type: Grant
    Filed: November 26, 1991
    Date of Patent: December 28, 1993
    Assignees: Mitsui Mining & Smelting Co., Ltd., Metallgesellschaft Aktiengesellschaft
    Inventors: Takao Hayashi, Norihiro Sato, Chikara Omotani, Manabu Hosoi, Nobuyoshi Kasahara, Wolf-Dieter Griebler, Jorg Hocken, Gunther Rudolph
  • Patent number: 5273816
    Abstract: A laminate which has improved dimensional stability may be prepared by impregnating a reinforcing substrate such as a woven glass cloth with an epoxy resin system having a relatively high molecular weight, in excess of about 850, in the presence of a curing agent followed by curing, pressing and post-baking substrate to form the desired laminate board. The variation in this dimensional stability can also be improved by utilizing a B-stage substrate which has been cured to a lower flow percentage.
    Type: Grant
    Filed: August 30, 1991
    Date of Patent: December 28, 1993
    Assignee: Allied-Signal Inc.
    Inventors: Larry D. Olson, Maureen D. Burkhardt, Henry R. Johnson
  • Patent number: 5270094
    Abstract: A three-dimensional fabric has three axes defined along its length, width and thickness directions, and an imaginary plane that bisects the fabric along its thickness or transverse direction. The fabric comprises a plurality of warp layers that are symmetrically arranged with respect to the imaginary plane. A plurality of first and second bias-yarn layers are symmetrically arranged with respect to the imaginary plane. A vertical yarn runs through the fabric in the transverse direction, to couple all the yarn layers.
    Type: Grant
    Filed: October 14, 1992
    Date of Patent: December 14, 1993
    Assignees: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho, Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Meiji Anahara, Yoshiharu Yasui, Masataka Sudoh, Mikiya Nishitani
  • Patent number: 5270106
    Abstract: An electronic component for making electrical contact with another component comprising a nonmetallic pultruded composite member having a plurality of small generally circular cross section conductive fibers in a polymer matrix the plurality of fibers being oriented in the matrix in a direction substantially parallel to the axial direction of the member and being continuous from one end of the member to the other to provide a plurality of electrical point contacts at each end of the member at least one end of the member having a fibrillated brush-like structure of said plurality of fibers providing a densely distributed filament contact wherein the terminating ends of the fibers in the brush-like structure defines an electrically contacting surface. In a preferred embodiment the brush-like member is a laser fibrillated structure.
    Type: Grant
    Filed: December 11, 1991
    Date of Patent: December 14, 1993
    Assignee: Xerox Corporation
    Inventors: Thomas E. Orlowski, Joseph A. Swift, Stanley J. Wallace, Wilbur M. Peck, John E. Courtney, David E. Rollins
  • Patent number: 5264992
    Abstract: A computer base unit has a keyboard and computer peripherals. A removable workslate, capable of stand-along operation and containing a digitizer display, computer and rechargeable power supply attaches to the base unit through an interlocking connector that holds the workslate in a tilted position and connects the base unit and its peripherals to the workslate computer. The base unit and workslate comprise housings are constructed of a composite comprising layers of woven, resin impregnated fibers and a layer of electromagnetic shielding.
    Type: Grant
    Filed: February 11, 1993
    Date of Patent: November 23, 1993
    Assignee: Tusk, Incorporated
    Inventors: Per Hogdahl, William Hart, Charles Krallman, Kenneth Shaw
  • Patent number: 5262469
    Abstract: The invention relates to an oxynitride glass fiber for composite products which has a surface cladding formed from a composition containing a silane coupling agent. This fiber is excellent in strength, elastic modulus, adhesion and wetting property with respect to matrix resin. A composite product comprising the above clad oxynitride glass fiber and a thermaplastic or thermosetting resin matrix is also disclosed. This composite is excellent in strength, elastic modulus, toughness and interlaminar shear resistance.
    Type: Grant
    Filed: December 7, 1992
    Date of Patent: November 16, 1993
    Assignee: Shimadzu Corporation
    Inventors: Haruo Osafune, Hiroyoshi Minakuchi
  • Patent number: 5260117
    Abstract: Honeycomb fabricated of non-crosslinked polymer is prepared by impregnating a fiber web with a linear prepolymer which is soluble in an organic solvent, and which is readily converted by thermal curing in the absence of a crosslinking agent to an insoluble form with a glass transition temperature exceeding 200.degree. C., preferably exceeding 250.degree. C. The preferred prepolymer is the product of diaminodiphenylsulfone and trimellitic anhydride, and forms a poly(amide-imide) upon cure. A process for forming the impregnated honeycomb is also disclosed, which involves impregnating ribbons or sheets, forming them into stacks bonded together at node lines, expanding the stacks into honeycomb structures, and heat soaking the expanded structures to cure the resin and stabilize the structure.
    Type: Grant
    Filed: March 12, 1991
    Date of Patent: November 9, 1993
    Assignee: Hexcel Corporation
    Inventors: Warren D. Myers, Ernest M. Bishop
  • Patent number: 5260124
    Abstract: Highly conducting lightweight hybrid materials are obtained by weaving strands of carbon or graphite fibers into a 2-dimensional fabric-like structure, depositing a layer of carbon onto the fibers of the fabric-like structure, heating the fabric-like structure to graphitize the carbon layer and intercalating the graphitized carbon layer. Composite materials for use in lightning strike protection are composed of at least one layer of the highly conducting lightweight hybrid material and at least one layer of traditional composite materials.
    Type: Grant
    Filed: November 25, 1991
    Date of Patent: November 9, 1993
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: James R. Gaier
  • Patent number: 5260121
    Abstract: Matrix resin formulations comprising cyanate esters of phenol adducts of dicyclopentadiene, epoxy resins and particular thermoplastics, provide fiber reinforced composites with excellent toughness and hot/wet properties.
    Type: Grant
    Filed: August 24, 1989
    Date of Patent: November 9, 1993
    Assignee: Amoco Corporation
    Inventors: Hugh C. Gardner, Shahid P. Qureshi
  • Patent number: 5256468
    Abstract: A woven material is described in which optical fibers are positioned and held in the material in a manner to maximize their optical efficiency. The material consists of fibers extending in both the warp and woof direction, the optical fibers are positioned in channels between the supporting fibers in the warp direction. The material is manufactured using conventional weaving equipment by positioning both the optical fibers and the warp fibers, and then weaving the woof fibers into place without bending the optical fibers. The fibers are thusly woven so that the optical fibers have zero warp. The woven grid-like mat can be coated with a protective material that either enables it to form a flexible sheet of ribbon or a rigid, hard, grid-like mat which has aligned zero warp optical fibers embedded therein. The material shown can be used to provide sensing, imaging or communications. It can be utilized for optical backplanes for optoelectronic systems or a housing for optoelectronic components.
    Type: Grant
    Filed: March 19, 1991
    Date of Patent: October 26, 1993
    Assignee: Page Automated Telecommunications Systems, Inc.
    Inventor: Patricia Wiener
  • Patent number: 5256475
    Abstract: A fabric for a fiber-reinforced thermoplastic composite material is disclosed, which comprises the warp and the weft wherein the warp comprises reinforcing fiber and the weft comprises high molecular weight grade polyether ether ketone resin yarns and low molecular weight grade polyether ether ketone resin yarns, or wherein the warp comprises reinforcing fiber and at least one of high molecular weight grade polyether ether ketone resin yarns and low molecular weight grade polyether ether ketone resin yarns and the weft comprises reinforcing fiber and at least one of high molecular weight grade polyether ether ketone resin yarns and low molecular weight grade polyethe ether ketone resin yarns. The fabric can be laminated or molded into a product having an excellent toughness and shock resistance in almost the same heating time as the conventional one.
    Type: Grant
    Filed: October 28, 1992
    Date of Patent: October 26, 1993
    Inventors: Ryota Koyanagi, Mikiya Fujii, Shoichi Watanabe, Hirokazu Inoguchi
  • Patent number: 5254397
    Abstract: A coated carbon fiber-reinforced composite material comprising a substrate material which comprises a carbon or ceramic matrix and reinforcing carbon fibers and a coating layer which comprises silicon carbide and at least one material selected from the group consisting of titanium carbide, zirconium carbide and hafnium carbide, wherein a part of the coating layer contacting to the substrate consists of at least one material selected from the group consisting of titanium carbide, zirconium carbide and hafnium carbide, a surface part of the coating layer consists of silicon carbide and a composition in an intermediate part between the part contacting to the substrate and the surface part continuously or stepwise changes from at least one material selected from the group consisting of titanium carbide, zirconium carbide and hafnium carbide to silicon carbide, and a carbon fiber-reinforced composite material comprising a matrix which comprises carbon and oxidation resistant ceramic and reinforcing carbon fiber co
    Type: Grant
    Filed: June 8, 1992
    Date of Patent: October 19, 1993
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Chihiro Kawai, Tadashi Igarashi
  • Patent number: 5254383
    Abstract: An improved flexible composite of manufacture especially suitable for use as a ballistic resistant body armor, said improved penetration resistant composite of the type comprising at least one penetration resistant layer comprising a flexible substrate having a plurality of penetration resistant elements on a surface thereof, said elements comprising a planar body having one or more fibrous layers on a surface of said body, each of said layers comprising a fiber network, said fiber network such that movement of said fibers in the direction of the edges of said body is restrained.
    Type: Grant
    Filed: September 14, 1992
    Date of Patent: October 19, 1993
    Assignee: Allied-Signal Inc.
    Inventors: Gary A. Harpell, Dusan C. Prevorsek, Max W. Gerlach
  • Patent number: 5254387
    Abstract: A high strength multi-layered woven tape for increased structural support comprising a plurality of high strength ribbons joined with a group of high strength fibers by means of a flexible thermal plastic resin for attaching to structural components for improved support.
    Type: Grant
    Filed: September 10, 1990
    Date of Patent: October 19, 1993
    Inventor: Daniel Gallucci
  • Patent number: 5252394
    Abstract: In accordance with the present invention, there are provided high molecular weight polyethylene molecular orientation molded articles formed from high molecular weight polyethylenes having a weight average molecular weight of 300,000-600,000, said molecular orientation molded articles having a fineness of not more than 15 deniers, a tensile strength of more than at least 1.7 GPa and satisfying the tensile strength S (GPa)-weight average molecular weight M. (g/mol)-fineness D (denier) relationship represented by the formula [I] ##EQU1## and processes for preparing the same. Further in accordance with the present invention, there are also provided high molecular weight polyethylene molecular orientation molded articles formed from high molecular weight polyethylene having a weight average molecular weight of exceeding 600,000 and satisfying the relationship represented by the formula [II].
    Type: Grant
    Filed: September 21, 1990
    Date of Patent: October 12, 1993
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Yasuo Kouno, Yuichi Itoh, Kazuo Yagi
  • Patent number: 5248554
    Abstract: Filaments of p-aramid yarns are impregnated with a polyaniline by passage through a polyaniline/sulfuric acid bath.
    Type: Grant
    Filed: June 1, 1992
    Date of Patent: September 28, 1993
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Che-Hsiung Hsu
  • Patent number: 5244720
    Abstract: A protective layer for polymeric composite substrates comprises a fiber-reinforced glass composite having a 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. The black glass ceramic is derived from cyclosiloxane monomers containing a vinyl group attached to silicon and/or a hydride-silicon group.
    Type: Grant
    Filed: April 19, 1991
    Date of Patent: September 14, 1993
    Assignee: Allied-Signal Inc.
    Inventors: Roger Y. Leung, Stephen T. Gonczy, Donald E. Yuhas, David P. Groppi
  • Patent number: 5242746
    Abstract: A multi-layer friction element is disclosed consisting of carbon-carbon composite material comprising a structure layer of so-called "coarse" texture comprising segments of rovings and at least one friction layer of so-called "fine" texture comprising fibre segments. A method also is disclosed for producing the friction element by preparation of a fibrous substrate by introducing segments of roving and/or fibers into a mould preferably by means of a distribution apparatus. Further disclosed is an apparatus for automatically obtaining a fibrous substrate of predetermined texture.
    Type: Grant
    Filed: May 6, 1991
    Date of Patent: September 7, 1993
    Assignee: Le Carbone-Lorraine
    Inventors: Christophe Bommier, Jean-Louis Chareire
  • Patent number: 5242721
    Abstract: The present invention provides a pipe-shaped structural member made of fiber reinforced plastics or fiber reinforced rubber utilizing the mechanical property of the material as an anisotropic material. Since the angle of the fibers and/or direction of orientation are made partially different in the circumferential direction of the structural member, and moreover, since part where the angle of fibers and/or direction of orientation are made partially different is at least a part in the thicknesswise direction of the circumferential part, the pipe-shaped structural member shows a peculiar style of deformation, and is applicable to a variety of industrial fields.
    Type: Grant
    Filed: November 26, 1990
    Date of Patent: September 7, 1993
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Masahide Oonuki, Tetsuo Yamaguchi, Akihiro Nakahara, Mitsunori Miki
  • Patent number: 5242720
    Abstract: An overlay of sheet material that is impregnated with thermosetting resin--typically a fabric of a type including metallic, synthetic fiber, natural fiber and ceramic cloths impregnated with epoxy resin--is wrapped about or laid on an underlay of material that is also impregnated with thermosetting resin--typically a resin material reinforced with fibers of the graphite, glass, aramid, or ceramic types. The overlay and underlay are cured under heat and pressure in an oven at the same time, causing cohesive bonding of the resin within each. The resin exudes through the fabric overlay during curing and forms a hard transparent shell of cured resin to the composite article. The embedded sheet material selectively imparts color, pattern, texture, reflectivity, penetration resistance, tensile strength, thermal and electrical conductivity, and other visual and mechanical properties to the composite article as desired.
    Type: Grant
    Filed: April 11, 1990
    Date of Patent: September 7, 1993
    Assignee: Wasatch Fiber Group, Inc.
    Inventor: Larry D. Blake
  • Patent number: 5242723
    Abstract: The present invention provides: (1) a formed tubular thermal insulator comprising a felt piece of carbon fibers spirally wound to form a laminate of felt layers integrally bonded to each other with the carbonized substance present between the felt layers with substantially no wavy deformation of spiral winding form, and (2) a process for preparing a formed thermal insulator, the process comprising spirally winding a felt piece of carbon fibers and a film and/or net with a carbonizable resin inserted therebetween while applying a tensile force on the film and/or net to form a laminate, followed by curing and carbonization.
    Type: Grant
    Filed: September 2, 1992
    Date of Patent: September 7, 1993
    Assignees: Osaka Gas Company, Ltd., Nikko Kasei Co., Ltd.
    Inventors: Hirofumi Kyutoku, Kimio Kitano, Kengo Hamada, Koichi Yamamoto, Takahiko Yoshikawa
  • Patent number: 5240753
    Abstract: The present invention provides a molded article for holding wafers which is made of a thermoplastic resin reinforced with whiskers. The present invention provides wafer holding molded articles, such as transport baskets, storage cases and carriers, for use in handling wafers and glass plates for liquid crystal televisions. These articles are useful for cleaning, drying, transporting or storing semiconductor wafers free of contamination.
    Type: Grant
    Filed: February 22, 1991
    Date of Patent: August 31, 1993
    Assignee: Otsuka Kagaku Kabushiki Kaisha
    Inventors: Akira Tabuchi, Morihiko Nakamura
  • Patent number: 5240773
    Abstract: A fabric reinforced thermoplastic composite which is reformable at a temperature less than about 100.degree. C. The thermoplastic comprises about 70 to 95% by weight of polyvinyl chloride and about 5 to 30% by weight of a halogenated polyvinyl chloride. The composite is used for forming orthotics and prosthesis devices.
    Type: Grant
    Filed: January 13, 1992
    Date of Patent: August 31, 1993
    Assignee: Mutual Industries, Inc.
    Inventor: Edmund M. Dunn
  • Patent number: 5238728
    Abstract: The invention relates to a textile structure comprising a superposition of unidirectional layers of yarns, the directions of which are crossed in relation to one another and which are tied by tying yarns. According to the invention, the number of superposed layers is at least equal to. The tying rate lies between 2 and 15%, approximately, and each tying yarn (20) ties at least one set of yarns of superposed layers, this set being defined by at least a first yarn (24) of a first layer (16) and at least a second yarn (25) of a second layer (19). The second yarn (25) is offset in relation to the first (24), and the connection of the layers is thus sufficiently loose in order to keep the structure in position and allow it to deform.
    Type: Grant
    Filed: December 12, 1990
    Date of Patent: August 24, 1993
    Assignee: Brochier S.A.
    Inventor: Jean Aucagne
  • Patent number: 5234765
    Abstract: High tensile and torque strength threads are provided on a thermoplastic composite rod by first cutting a thread at a relatively short pitch into an end of the rod. Thermoplastic composite tape is then wound in tight conformance to the cut thread so that the fibers of the tape align with the desired helix angle of the thread to be created. The rod and the tape are heated at their junction to above melt temperatures during the winding process to increase adhesion between the rod and the tape. While the end of the rod and the wound tape are at above melt temperatures, the end of the rod and the tape are compressed in a die conforming to the desired ultimate configuration of the thread. The tape and rod are then permitted to cool until sufficiently hardened to permit release of the compressing die without deformation of the threaded end of the tape. The result is a thermoplastic composite rod having high tensile and torque strength at its threaded end.
    Type: Grant
    Filed: February 8, 1991
    Date of Patent: August 10, 1993
    Inventors: Scott R. Taylor, Warren M. Thomas
  • Patent number: 5234752
    Abstract: In a wear-resistant laminated article (e.g. a bearing, or a compressor rotor blade) made by heating an assembly of superimposed layers of fabric impregnated with a phenolic or other thermosetting resin, the fabric is made of non-asbestos yarn comprising a core of glass fibre with a surface of aramid fibre and a relatively porous fibre such as viscose fibre, the aramid fibre forming not more than 40% by weight of the yarn. The laminate may further incorporate carbon fibres.
    Type: Grant
    Filed: October 1, 1991
    Date of Patent: August 10, 1993
    Assignee: Tenmat Limited
    Inventors: Philip Laflin, John E. Kerwin, Geoffrey Colley, David R. Newton
  • Patent number: 5232025
    Abstract: A flat shaft rod of a heald frame for a loom has two half-shells (16) made of a thermoplastic, fiber-reinforced composite which forms mechanically interconnected, rigid hollow sections (15). A rigid longitudinal reinforcement (17) is disposed on the outside of the hollow section and a carrier or support rail or bar (18) is disposed on the inside, the elements (17, 18) both being mechanically rigidly connected to the half-shells. These shaft rods are rigid and heald frames made with them are of simple construction.
    Type: Grant
    Filed: March 9, 1992
    Date of Patent: August 3, 1993
    Assignee: Sulzer Brothers Limited
    Inventors: Hansjorg Gysin, Wilhelm Servis
  • Patent number: 5230370
    Abstract: A flat, lightweight shaft rod of a heald frame for a loom, is constructed as a sandwich having a light sandwich core (15) and, connected thereto, covering layers (16) made of a thermoplastics composite having industrial endless fiber reinforcements. A rigid longitudinal reinforcement member (17) is disposed on the outside of the shaft rod and a carrier bar (18) on the inside thereof, the reinforcement (17) and bar (18) both being rigidly connected mechanically to the covering layer (16).
    Type: Grant
    Filed: March 4, 1992
    Date of Patent: July 27, 1993
    Assignee: Sulzer Brothers Limited
    Inventor: Hansjorg Gysin
  • Patent number: 5230960
    Abstract: An activated and heat-treated product of a pitch fiber (A) is combined with an activated and heat-treated product of a precursor fiber of carbon fiber (B) having a larger elongation and a larger shrinkage during activation treatment thereof than those of the pitch fiber (A) to provide an activated carbon fiber structure. The activated carbon fiber structure is produced by subjecting the pitch fiber (A) and the precursor fiber of carbon fiber (B) to an activation treatment before or after the fibers (A) and (B) are formed into a configuration corresponding to a fiber structure through mixing or laminating.
    Type: Grant
    Filed: January 7, 1991
    Date of Patent: July 27, 1993
    Assignee: Gun Ei Chemical Industry Co., Ltd.
    Inventor: Toshi Iizuka
  • Patent number: 5229199
    Abstract: A rigid composite of a polyester, phenolic, or polyamide resin matrix reinforced with continuous filaments of a p-aramid coated with an adhesion modifier.
    Type: Grant
    Filed: June 28, 1991
    Date of Patent: July 20, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Louis H. Miner, George E. Zahr
  • Patent number: 5228481
    Abstract: A weaving mechanism for producing rod piercing type three-dimensional multiple-axis fabrics using a fall-preventive wall to prevent fall-off of inserted weft rods. The weaving mechanism being adapted to obviate the use of wastefully lengthy weft rods. For inserting weft rods into a warp rod group obliquely from a plural number of directions in the weaving process of a three-dimensional multiple-axis fabric, the inserted weft rod portions which protrude out of the warp rod group are received by a fabric guide which constitutes a fall-preventive wall. The fabric guide which guides the woven fabric is formed in a cylindrical shape enveloping the woven fabric in small gap relation therewith when seen in the axial direction of the warp rods. The weft rods are inserted at a position outside an end portion of the fabric guide or through notched grooves in the fabric guide.
    Type: Grant
    Filed: January 8, 1992
    Date of Patent: July 20, 1993
    Assignee: Three-D Composites Research Corporation
    Inventors: Masahiko Kimbara, Makoto Tsuzuki
  • Patent number: 5229196
    Abstract: Improved fiber reinforced composites having near zero coefficients of thermal expansion are described. The improved composites include reinforcing fibers and matrix material in which gap structures which exist within the composite are filled with a bonding agent. The reinforcing fibers can be unidirectionally, bidirectionally or multidirectionally oriented within the matrix material and articles fabricated from the improved composite have reduced coefficients of thermal expansion in directions transverse to the orientations of the fibers. This improvement makes these improved composites useful for fabricating high energy laser mirror substrates.
    Type: Grant
    Filed: September 27, 1991
    Date of Patent: July 20, 1993
    Assignee: Hughes Aircraft Company
    Inventors: Robert W. Seibold, Bruce W. Buller, James O. Gibson
  • Patent number: 5226457
    Abstract: The shaft rod of a heald frame for a loom, the rod having a corrugated or cross-section, has a shell (16) made of a thermoplastics composite having industrial endless fibers. A rigid longitudinal reinforcement (17) is disposed on the outside of the section and a carrier or support rail or bar or the like (18) is disposed on the inside, the elements (17, 18) both being rigidly connected mechanically to the shell (16). Light rigid low-cost shaft rods and heald frames of simple construction are therefore provided.
    Type: Grant
    Filed: March 9, 1992
    Date of Patent: July 13, 1993
    Assignee: Sulzer Brothers Limited
    Inventors: Hansjorg Gysin, Wilhelm Servis
  • Patent number: 5227216
    Abstract: A fiber/metal laminate composite material is comprised of a plurality of metallic layers, reinforced with a plurality of fiber layers. The metallic layers are preferably aluminum, while the fibers in the fiber layers are preferably comprised of an aramid. The fibers are bi-directionally oriented. To provide the laminate with superior fiber failure resistance characteristics, the laminate is post-stretched along a post-stretch axis which bisects the two fiber axes.
    Type: Grant
    Filed: March 25, 1991
    Date of Patent: July 13, 1993
    Assignee: McDonnell Douglas Corporation
    Inventor: Richard G. Pettit
  • Patent number: 5227365
    Abstract: Process for producing superconducting metal-oxide textiles comprising impregnating a preformed, organic textile material with metal compounds in a desired atomic ratio, heating the material in a weakly oxidizing atmosphere to pyrolize and oxidize the organic material, maintaining the material at temperature in an oxidizing atmosphere, and cooling the material in an oxidizing atmosphere, so as to form a crystalline structure capable of superconducting.
    Type: Grant
    Filed: February 24, 1992
    Date of Patent: July 13, 1993
    Assignee: Praxair Technology, Inc.
    Inventor: Jaak S. Van den Sype
  • Patent number: 5225262
    Abstract: A high temperature, high pressure resistant packing (e.g., for the packing gland of a valve stem) has a core of density 1.3-1.6 gm/cc that includes a plurality of strands, each strand including a flexible graphite tape, longitudinally corrugated and folded into at least two longitudinally extending partially superimposed layers. Preferable, each strand is overknitted with a reinforcing wire, the strands in the core are braided, and a jacket, which includes a carbide fiber, an inorganic fiber, and a phenolic fiber, is disposed about the core.
    Type: Grant
    Filed: April 29, 1991
    Date of Patent: July 6, 1993
    Assignee: A. W. Chesterton Co.
    Inventor: Robert D. Leduc
  • Patent number: 5224363
    Abstract: This invention relates to a method of making a protective garment, a garment produced in accordance with the method, and a strand material used in the method and garment. The strand material comprises cut resistant material such as Kevlar, aramid, metallic, and combined Kevlar and metallic strands, or the like, which are extrusion coated with vinyl, polyurethane or other suitable fluid impervious material. Coating the strands with fluid impervious material results in a cut resistant high strength fabric which is resistant to staining. The method comprises manipulating the strand material using substantially conventional textile fabric forming technology such as knitting to form a fabric and a garment, and may include coating the finished garment to achieve enhanced characteristics. One such characteristic which may be achieved is to make a garment fluid impervious, by coating a substrate with fluid impervious materials such as flexible urethane to protect the wearer.
    Type: Grant
    Filed: June 27, 1991
    Date of Patent: July 6, 1993
    Assignee: Golden Needles Knitting & Glove Co., Inc.
    Inventor: Roger I. Sutton
  • Patent number: 5219642
    Abstract: A structural thermoplastic composite material comprises a laminate of a first layer of a fibre reinforced thermoformable crystalline polymer composite and an adherent layer of a second thermoformable polymer which has been applied to the first layer at a temperature above the melting point of the polymer of the first layer. The second polymer comprises an amorphous polymer having a Tg which is at least 10.degree. C. lower than the Tm of the other polymer, which is crystallisable in a subsequent annealing process, and which has a peak crystallisation time of at least 1 minute. Such a material can be bonded to itself or to a different material by the adherent layer at temperatures below the Tm of the matrix polymer.
    Type: Grant
    Filed: December 10, 1991
    Date of Patent: June 15, 1993
    Assignee: Imperial Chemical Industries PLC
    Inventors: Peter J. Meakin, Philip A. Staniland, Frederic N. Cogswell
  • Patent number: 5217796
    Abstract: A woven material of inorganic fiber, and a process for making the same, are disclosed in which exposed surfaces of warps and wefts constituting the woven material are opened as a result of being impinged by jets of pressurized water, whereby the fibers on the surface of the woven material are uniformly raised.
    Type: Grant
    Filed: December 17, 1990
    Date of Patent: June 8, 1993
    Assignee: Nitto Boseki Co., Ltd.
    Inventors: Shin Kasai, Hideharu Waketa, Keiichi Kato, Yutaka Kawaguchi
  • Patent number: 5217766
    Abstract: A method for forming stabilized preforms for complex composite articles is disclosed using a solid meltable uncatalyzed thermosetting resin as the stabilizing agent. The resin is applied to each layer of the preform and heated to melt the resin and bond the layers together. After cooling, the resin resolidifies but does not set and thereby holds the layers in the desired preform shape. The layers can be first formed into a flat sheet as a raw material from which shaped preforms can be made by cutting the sheet into sections which are placed over a mandrel and reheating to thereby remelt the solid resin to allow the preform to conform to the shape of the mandrel. Utilizing this process allows complex composite parts to be easily preformed and assembled prior to placement in a mold for resin injection molding, without inhibiting part strength as the resin is compatible with the injection resin and is cocatalyzed by the catalyst contained in the injection resin.
    Type: Grant
    Filed: June 11, 1992
    Date of Patent: June 8, 1993
    Assignee: United Technologies Corporation
    Inventors: Nicholas P. Flonc, Michael W. Brace
  • Patent number: 5217770
    Abstract: Fibrous substrates for the production of carbon and/or ceramic (including mixtures of these) fiber reinforced carbon and/or ceramic (including mixtures of these) composites and to methods of manufacture of same. A shaped filamentary structure comprising at least a first braided filamentary tape layer of a width generally corresponding to that of the filamentary structure to be formed, the first braided filamentary tape layer superposed upon and joined to least one other filamentary layer by needlepunching to produce cross-linking of the layers by filaments displaced out of the layers and extending in a direction generally perpendicular to the faces of the layers, and methods of making same. The structure may include a plurality of hellically wound braided tapes arranged to form a flat, hollow annulus having a plurality of interleaved braided layers. The structure may be used in the production of friction discs.
    Type: Grant
    Filed: August 15, 1991
    Date of Patent: June 8, 1993
    Assignee: The B. F. Goodrich Company
    Inventors: Edward L. Morris, Jr., Ronnie S. Liew
  • Patent number: 5215795
    Abstract: An shock-absorbing air bag for an automobile or aircraft, has a high heat and flame resistance and satisfactory mechanical strength and comprises a high density woven fabric composed of warps and wefts each comprising (a) 0 to 90% by weight of thermoplastic synthetic fibers, for example, polyester fibers, having a denier or 5 or less and a Young's modulus of 1300 kg/mm.sup.2 or less, and (b) 10 to 100% by weight of heat resistant organic fibers, for example, aramid fibers, having a denier of 2 or less and a thermal decomposition temperature of 300.degree. C. or more, the woven fabric preferably having a high cover factor of 1900 or more.
    Type: Grant
    Filed: June 14, 1991
    Date of Patent: June 1, 1993
    Assignee: Teijin Limited
    Inventors: Mitsuo Matsumoto, Nobuo Takahashi, Hideo Nakagawa, Masayuki Takahashi, Kunio Nishimura
  • Patent number: 5214566
    Abstract: To provide I.C. cards that are reinforced and above all in which the card body is compatible both with using the I.C. in the card and with using a surface of the card that is coated with a film of magnetic material, at least two reinforcing sheets made of different types of reinforcing material are provided so as to adapt the expansion coefficient and the strength coefficient of the card so that both these coefficients lie within a range that is common to both card technologies. It is shown that this provides greater synergy in use of cards having both electronic memory and magnetic memory since in spite of temperature expansion magnetic card shapes are maintained, thereby making it possible to use magnetic tracks that comply with mass data storage requirements for use with magnetic tracks.
    Type: Grant
    Filed: July 1, 1991
    Date of Patent: May 25, 1993
    Assignee: Gemplus Card International
    Inventors: Francois Dupre, Jean-Pierre Gloton
  • Patent number: 5211999
    Abstract: A laminated composite includes a layer of monolithic ceramics and a layer of fiber-reinforced ceramics. The layer of fiber-reinforced ceramics is placed on the layer of SiC ceramics. The layer of SiC ceramics is made of a densely sintered body of SiC. The layer of fiber-reinforced ceramics is made of SiC-matrix ceramics reinforced by continuous SiC fiber.
    Type: Grant
    Filed: July 9, 1991
    Date of Patent: May 18, 1993
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Akira Okada
  • Patent number: 5212010
    Abstract: A woven, stabilized fabric suitable for reinforcing resin matrices is provided. The fabric comprises a woven fabric of graphite, fiberglass, aramid, etc., in which a limited amount of a resin coated fiber is woven into one direction of the fabric. Prior to weaving, the resin coated fiber is initially coated with a resin such as an epoxy, polyimide, etc., followed by drying and then weaving into the fabric with as few picks as possible. When the fabric is heated, the resin coat melts and adheres to the fabric, and imparting stabilizing properties thereto. The stabilized fabric is then set up in a mold for resin impregnation, without undergoing undesirable movement.
    Type: Grant
    Filed: May 28, 1991
    Date of Patent: May 18, 1993
    Assignee: Ketema, Inc.
    Inventors: Frederick H. Curzio, Peter R. Moores