Bonding Of Flexible Filamentary Material While In Indefinite Length Or Running Length Patents (Class 156/166)
  • Patent number: 6372294
    Abstract: The method for the manufacture of unidirectionally fiber reinforced thermoplastic bands comprises a pressure impregnation of a fiber strand in a bath with a dispersion of thermoplastic particles. Heat treatments for the drying of the strand and a melting on of the particles taken up by the strand follow the pressure impregnation. The strand is drawn through the bath at a predetermined draw-off speed about a plurality of deflection elements. The dispersion of the bath is largely held in a stationary state, namely through the supply of an infeed dispersion with a first particle concentration and through an initial setting of a second particle concentration in the bath: The infeed dispersion is fed in continuously or periodically, with the first particle concentration being held constant. A corresponding feeding in of a dispersion of higher particle concentrations as well as an additional amount of dispersing medium is possible.
    Type: Grant
    Filed: February 19, 1999
    Date of Patent: April 16, 2002
    Assignee: Sulzer Innotec AG
    Inventors: Albert Maria Vodermayer, Jens Kärger, Stefan Kaufmann, Hans Erlach
  • Patent number: 6355133
    Abstract: A method of forming a substantially planar, multi-layer, composite article that comprises a plastics materials reinforced with fibers that extend substantially continuously in one direction in the plane of each layer is provided. The majority of the layers are aligned in a main direction B and the article (20a) is disposed over a contoured surface of a forming tool (6). The article (20a) is constrained against movement in a direction perpendicular to the plane of the main direction layers and forces applied to the article (20a) in the plain thereof in a direction substantially perpendicular to the main direction of the fibers. The article (20a) is thereby urged into conformity with the contoured surface of the tool (6) while substantially maintaining the continuity of the fibers.
    Type: Grant
    Filed: December 17, 1999
    Date of Patent: March 12, 2002
    Assignee: BAE Systems plc
    Inventor: Stephen Williams
  • Publication number: 20020015519
    Abstract: A method for bonding a material to a fibrous substrate surface that includes providing a catalyst at the fibrous substrate surface, then contacting that surface with a material that undergoes a metathesis reaction and then bonding the fibrous substrate surface to a second substrate. There are two embodiments of this method—a coating process and an adhesive process. In the coating embodiment, the metathesizable material is contacted with the catalyst on the substrate surface so that it undergoes metathesis polymerization to form the coating. The adhesive process includes (a) providing a catalyst at the fibrous substrate surface, (b) contacting the catalyst on the fibrous substrate surface with a metathesizable material so that the metathesizable material undergoes a metathesis reaction; and (c) contacting the fibrous substrate surface with a second substrate surface.
    Type: Application
    Filed: January 29, 2001
    Publication date: February 7, 2002
    Applicant: Lord Corporation
    Inventors: Edward F. Tokas, Kenneth C. Caster
  • Patent number: 6333071
    Abstract: An apparatus for producing optical fiber ribbons which has a optical fiber gathering device, one or more coating applicators and a turn roller arranged in a straight line, with one or more alignment guide in plate form being provided on a travelling line of optical fibers or optical fiber ribbons upstream of the coating applicator. The alignment guide is chamfered to arch form on the side that contacts the optical fibers or the optical fiber ribbons. The alignment guide suppresses the optical fibers or the optical fiber ribbons from vibrating in a direction perpendicular to the direction of the arrangement of the optical fibers or the optical fiber ribbons.
    Type: Grant
    Filed: December 23, 1999
    Date of Patent: December 25, 2001
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Kohei Kobayashi, Ichiro Tsuchiya, Tomoyuki Hattori
  • Publication number: 20010051484
    Abstract: A laminated structural body is manufactured by laminating unidirectionally arranged strands and a web such that two layers of the web sandwich the strands therebetween. A cylindrical web is delivered in a direction parallel to a central axis thereof. A polymer liquid is discharged from a spinning head, which is disposed in the cylindrical web and rotated about the central axis of the cylindrical web, toward an inner surface of the cylindrical web to spin strands of the discharged polymer liquid. The spun strands are arranged in a direction substantially parallel to the circumferential direction of the cylindrical web and laminated on the inner surface of the cylindrical web. The cylindrical web with the strands laminated thereon is folded flatwise to sandwich the strands between the two folded layers of the web.
    Type: Application
    Filed: June 1, 2001
    Publication date: December 13, 2001
    Inventors: Takashi Ishida, Toshio Ohta, Tadayoshi Katoh, Hiroshi Yazawa, Shuichi Murakami
  • Patent number: 6319348
    Abstract: To make an annular fiber structure, a strip-shaped fabric (50), is used which is made up of two superposed unidirectional sheets, with the directions of the sheets forming opposite angles relative to the longitudinal direction of the strip, the two sheets being bonded together so as to form deformable elementary meshes, the fabric being wound while being deformed so as to transform it into a flat helix, the elementary meshes deforming in such a manner that variation in mass per unit area between the inside and outside diameters of the turns remains small, and the flat turns are pressed against one another.
    Type: Grant
    Filed: September 27, 1999
    Date of Patent: November 20, 2001
    Assignee: Societe Nationale d'Etude et de Construction de Moteurs d'Aviation-SNECMA
    Inventors: Pierre Olry, Dominique Coupe, Bernard Lecerf, Jean-Michel Guirman
  • Publication number: 20010037850
    Abstract: Nonwoven webs are fabricated by forming unitary multicomponent fibers comprising a plurality of individual segments partially exposed at the surface of the fiber; bonding the multicomponent fibers, such as by thermal point bonding, and then hydroentangling the bonded multicomponent fibers with a water pressure from about 400 to 3000 psi wherein the entangling process separates the individual segments of the unitary multicomponent fibers into microfibers and also entangles the fibers to form an integrated nonwoven web. The nonwoven webs include entangled webs of thermoplastic multicomponent fibers and microfibers having partially degraded bond areas comprising from about 5% to about 50% at the surface area of the web.
    Type: Application
    Filed: January 16, 2001
    Publication date: November 8, 2001
    Inventors: Samuel Edward Marmon, Elisha Seidah Wazeerud-Din, Brett Peter Samuels
  • Patent number: 6306233
    Abstract: The present invention refers to a method of manufacturing a two-thread yarn having a certain degree of elasticity for use on the weaving industry and to an apparatus for carrying out the method. The method comprises the steps of providing at least one elastic yarn and at least one support yarn as a paired couple; applying a water-soluble thermosetting adhesive substance to said elastic yarn and support yarn paired as a couple; fastening said adhesive-coated elastic yarn and support yarn paired as a couple to each other to form a two-thread yarn; and simultaneously stretching, heating and setting said two-thread yarn comprising said elastic yarn and said support yarn paired as a couple.
    Type: Grant
    Filed: August 23, 1999
    Date of Patent: October 23, 2001
    Inventor: Ivo Zarzur
  • Patent number: 6294036
    Abstract: A process for manufacturing composite sheets. The sheets are made of at least one ply of yarn with this ply having at least two materials with different melting points. The ply is introduced continuously into a zone where it is heated to a temperature between the two melting points and below the degradation temperature of the material having the lower melting point. This ply is then passed over at least one rotating bar heated to a temperature lying between the melting points and below the degradation temperature of the material with the lower melting point. The ply is then compressed on leaving the rotating bar and is cooled to form a composite web. The web is collected in the form of one or more composite plies.
    Type: Grant
    Filed: September 15, 1999
    Date of Patent: September 25, 2001
    Assignee: Vetrotex France
    Inventors: Dominique Loubinoux, Jacques Voiron, Jean-Paul Debalme, Charles Saint-John
  • Patent number: 6290799
    Abstract: Method and apparatus for the manufacture of fiber reinforced structures wherein tooling and a delivery head are employed for the placement of discrete, elongated fiber elements in mutually superimposed relationship to define reinforcement or stiffening members on fiber elements for the interiors or exteriors of composite shells and the consolidation of the fibers to form the cured composite structure. A consolidation medium is provided for the positioning and control of the fiber elements on the hard tooling and during the curing of the fiber elements.
    Type: Grant
    Filed: September 21, 1999
    Date of Patent: September 18, 2001
    Assignee: Alliant Techsystems Inc.
    Inventors: Mark E. Deckers, Vernon M. Benson, Michael R. McCloy, Todd A. Rosevear, Dennis Hegerhorst, Boyd L. Hatch, Keith G. Shupe
  • Patent number: 6258195
    Abstract: Medical tubing having a wall formed of multiple strands bonded together. One method for making the tubing utilizes multiple spools containing polymeric strands disposed about a central mandrel, with the strands aligned with and disposed evenly about the mandrel, with both mandrel and strands entering a die or other bonding device. Adjacent strands are bonded together to form a tube wall, the tube preferably having at least one lumen therethrough. Adjacent strands are lightly bonded in some embodiments and highly bonded in others. Bonding can be accomplished using heat, solvent welding, or adhesive. The strands making up the tube wall can be formed of materials differing between strands. One use of the tubing is for constructing angioplasty catheters.
    Type: Grant
    Filed: March 19, 1999
    Date of Patent: July 10, 2001
    Assignee: SciMed Life Systems, Inc.
    Inventors: Thomas J. Holman, Gregory K. Olson, Philip J. Ebeling
  • Patent number: 6251206
    Abstract: An opening and resin-impregnation apparatus is used for impregnating a reinforcing fiber bundle (2) with a molten resin. The fiber bundle (2) is subjected to opening by bringing it into contact with opening pins (4). An auxiliary pin (5) is positioned within a specific region relative to the opening pin. The apparatus and a method which makes use of the apparatus permit the production of a continuous fiber-reinforced thermoplastic resin composite material having excellent impregnation characteristics and flexural strength while maintaining high stable productivity.
    Type: Grant
    Filed: June 9, 1998
    Date of Patent: June 26, 2001
    Assignee: Chisso Corporation
    Inventors: Koichi Saito, Rikio Yonaiyama
  • Publication number: 20010004412
    Abstract: An automatic apparatus for assembling an optical fiber cable, a pre-assembled element and a sleeve. The automatic apparatus includes a glue-injecting mechanism, a feeding mechanism, a forging press, a movable stand, a clamping and rotating mechanism and a robot. Glue is injected into the pre-assembled element by the glue-injecting mechanism. Then, the robot conveys the pre-assembled element from the glue-injecting mechanism to the clamping and rotating mechanism. The optical fiber cable and sleeve are supported by the movable stand. The stand is moved toward the pre-assembled element so that the optical fiber cable enters the pre-assembled element. Then, the optical fiber cable is further pushed into the pre-assembled element by the feeding mechanism. Then, the pre-assembled element is covered with the sleeve by the feeding mechanism. Then, the sleeve is pressed by the forging press so that the sleeve is deformed to engage the pre-assembled element.
    Type: Application
    Filed: November 29, 2000
    Publication date: June 21, 2001
    Applicant: U-Conn Technology Inc.
    Inventors: Shih Chen Chou, Winyann Jang
  • Publication number: 20010001974
    Abstract: A synthetic wood material and method are disclosed, including providing a plurality of continuous glass fibers oriented substantially in the longitudinal axis and coated with a resorcinol modified phenolic resin binder substantially free from catalyst. In one aspect, the synthetic wood material is oxidatively treated to restore color. In one aspect, the fibers and binder are precoated with a furfuryl alcohol resin prior to the pultrusion step to form the synthetic wood.
    Type: Application
    Filed: January 6, 2001
    Publication date: May 31, 2001
    Inventors: Willy M. Balaba, Thomas J. Bryan
  • Publication number: 20010001407
    Abstract: This invention describes improved apparatus and methods for spin-on deposition of semiconductor thin films. The improved apparatus provides for controlled temperature, pressure and gas compositions within the deposition chamber. The improved methods comprise dispensing of solutions containing thin film precursor via a moveable dispensing device and the careful regulation of the pattern of deposition of the precursor solution onto the wafer. The invention also comprises the careful regulation of deposition variables including dispensation time, wafer rpm, stop time and rates of wafer rotation. In one embodiment, the precursor solution is dispensed from the outer edge of the wafer toward the center. In alternative embodiments, processors regulate the movement of the dispensing arm and the precursor pump to provide an evenly dispensed layer of precursor solution. The invention also describes improved methods for evaporating solvents and curing thin films.
    Type: Application
    Filed: November 12, 1998
    Publication date: May 24, 2001
    Inventors: LU YOU, DAWN HOPPER, RICHARD J. HUANG
  • Patent number: 6234922
    Abstract: A fielding practice bat is disclosed having a frame, preferably U-shaped, integrally connecting a head portion and a handle portion, wherein the fielding practice bat has a length, weight and balance equivalent to a conventional baseball bat. The head portion is generally tear-drop in shape and has a width no greater than 12 inches. In addition, the head portion is interwoven with a plurality of main strands of elastic tubing and a plurality of cross strands of elastic tubing. In the preferred embodiment, a single piece of elastic tubing comprises the main strands and cross stands of elastic tubing wherein the piece of elastic tubing is woven through holes in the frame. A forming grid is also disclosed comprising a matrix of cells. The main and cross strands of the fielding practice bat are interwoven through the cells of the forming grid such that each cell contains a single intersection between a main strand and a cross strand, thereby dampening the vibration of the strands upon contact with a ball.
    Type: Grant
    Filed: July 3, 1999
    Date of Patent: May 22, 2001
    Inventor: Craig C. White
  • Patent number: 6235136
    Abstract: This invention provides reinforced, water-resistant membranes, and methods of manufacturing and installing such membranes. These membranes include a mastic layer having first and second major surfaces and a fiber-containing reinforcing layer disposed within the mastic layer for improving the mechanical strength of the membrane. The membrane can be bonded to an underlying substrate by the application of heat or pressure to form an adherent bond. The reinforced membrane of this invention can have a tensile strength of at least about 300 psi or more.
    Type: Grant
    Filed: July 23, 1997
    Date of Patent: May 22, 2001
    Assignee: Saint-Gobain Technical Fabrics Canada, Ltd.
    Inventors: Mark Kittson, Darryl Williams
  • Patent number: 6228199
    Abstract: A synthetic wood material and method are disclosed, including providing a plurality of continuous glass fibers oriented substantially in the longitudinal axis and coated with a resorcinol modified phenolic resin binder substantially free from catalyst. In one aspect, the synthetic wood material is oxidatively treated to restore color. In one aspect, the fibers and binder are precoated with a furfuryl alcohol resin prior to the pultrusion step to form the synthetic wood.
    Type: Grant
    Filed: August 10, 1998
    Date of Patent: May 8, 2001
    Assignee: Balaba Concrete Supply, Inc.
    Inventors: Willy M. Balaba, Thomas J. Bryan, III
  • Patent number: 6203645
    Abstract: A female fabric for use in a hook and loop connecting arrangement in which a plurality of spaced substantially parallel yarns having loops projecting from and integral therewith are held in spaced relationship by a suitable adhesive material.
    Type: Grant
    Filed: April 29, 1996
    Date of Patent: March 20, 2001
    Assignee: Milliken & Company
    Inventor: Michael William Gilpatrick
  • Patent number: 6203636
    Abstract: A method is disclosed for imparting a graphic design to the upper surface of a fabric suitable for use as a wall or floor covering. The graphic design is formed by an elongated pile article having a plurality of filament bundles attached to an elongated support strand. The fabric may be a tufted, woven, nonwoven, flocked fabric or a needled felt. The elongated pile article may be attached to the fabric by various methods, including ultrasonically bonding, applying an adhesive, sewing, stapling or using plastic fasteners. A transfer sheet is disclosed to aid in attaching by ultrasonically bonding, the sheet being made from a fusible material having the elongated pile article is attached thereto. The transfer sheet is positioned on the fabric, the elongated pile article is then ultrasonically bonded, melting a portion of the transfer sheet material, and the unmelted portion is then removed.
    Type: Grant
    Filed: March 18, 1998
    Date of Patent: March 20, 2001
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Peter Popper, Mark Stephen Edwards, William Charles Walker
  • Patent number: 6193829
    Abstract: The present invention relates to a method and tooling for forming a stent and the stent so formed. The stent includes filaments of a first material and joints of a second material. The present invention also discloses the above described stent in combination with an angioplasty balloon. The tooling in accordance with the present invention provides a fixture having grooves that receive the filaments of the stent to hold the filaments in place for joining. The joining of all of the filaments can be performed simultaneously by laser welding or injection molding a joint material. The tooling in accordance with the present invention also provides the capability to mold the stent as one piece. The method in accordance with the present invention includes the steps of providing a fixture with internal grooves, placing filaments into the grooves and joining the filaments together.
    Type: Grant
    Filed: January 7, 1999
    Date of Patent: February 27, 2001
    Assignee: International Business Machines Corporation
    Inventors: Michael A. Acciai, Richard R. Hall, John T. Legg
  • Patent number: 6170105
    Abstract: Elongated composite deck sections or panels are formed by pultruding a plastics resin material with multiple layers or mats of glass fibers and longitudinally extending unidirectional fibers to form a base wall integrally connecting upwardly projecting and longitudinally extending tubular ribs. Each rib has opposite side surfaces converging towards the base wall, and longitudinally extending ears project laterally outwardly from the side surfaces. The top surface of each panel is coated with epoxy adhesive, and the top surface of the base wall is also coated with an aggregate of crushed stone. The deck panels are assembled in laterally adjacent overlapping relation to form a permanent composite deck form. A mat of fiber reinforced composite rods are spaced above the deck panels which are surrounded by border forms, and concrete is poured onto the deck panels which positively bond with the concrete.
    Type: Grant
    Filed: April 29, 1999
    Date of Patent: January 9, 2001
    Assignee: Composite Deck Solutions, LLC
    Inventors: John J. Doyle, Kurt S. Eyring, Ken R. Schibi
  • Patent number: 6165604
    Abstract: Fiber-reinforced composites prepared from a depolymerizable and repolymerizable polymer have the processing advantages of a thermoset without being brittle. Impregnation of polymer into the fiber bundle can be achieved with ease, while still producing a composite with excellent physical properties and high damage tolerance.
    Type: Grant
    Filed: January 28, 1999
    Date of Patent: December 26, 2000
    Assignee: The Dow Chemical Company
    Inventors: Christopher Michael Edwards, Edward Louis d'Hooghe
  • Patent number: 6162322
    Abstract: Methods for orienting fibers and an apparatus for orienting fibers are provided for the fabrication of improved thin abrasive wheels utilizing uniform non-woven fiber reinforcement discs. The wheels are more resistant to hub push-out failure during grinding than wheels reinforced with woven fiber cloth.
    Type: Grant
    Filed: March 19, 1999
    Date of Patent: December 19, 2000
    Assignee: Norton Company
    Inventors: Nicolas Avril, Jane L. Cercena, Elinor B. Keil, David G. Lund, Karen M. Conley, Bethany L. Salek
  • Patent number: 6126766
    Abstract: A method and an industrial robotic device for uniformly applying coatings at appropriate thickness and pitch upon a surface moves a spray applicator foam dispenser between two parallel tracks. The uniform application of foam at each pass is assured, by accelerating the speed of the foam dispenser at the end of each pass, by providing respective curved uphill distal ends of the tracks, so that the spray applicator foam dispenser moves up the curved distal ends and returns quickly while changing speed tilt and direction at the end of each pass.
    Type: Grant
    Filed: March 11, 1999
    Date of Patent: October 3, 2000
    Inventor: John P. Hunter, Jr.
  • Patent number: 6123882
    Abstract: A fiber reinforced thermoplastic resin sheet which has no warpage, higher fiber orientation or randomized fiber orientation, manufactured by supplying a dispersion containing reinforcing fibers and a thermoplastic resin from an inlet onto a moving endless mesh belt and by continuously forming a web in the shape of a sheet while subjecting the dispersion to suction and filtration, is disclosed. The method and apparatus of manufacturing the same by means of controlling the speed ratio and the distribution of the suction amount of the aqueous medium are also disclosed.
    Type: Grant
    Filed: August 19, 1996
    Date of Patent: September 26, 2000
    Assignee: Kawasaki Steel Corporation
    Inventors: Yuichi Uchida, Fumiaki Yoshikawa, Seiji Hanatani, Osamu Nishimura, Masahiko Kajioka
  • Patent number: 6057024
    Abstract: A composite elastic material includes a layer of ribbon-shaped elastomeric elements disposed in machine direction alignment and point bonded to an extensible layer which may be a gatherable layer or a stretchable layer. A layer of meltblown elastomeric fibers may be bonded to the layer of elastomeric ribbon-shaped elements before bonding to the extensible layer. The elastic composite has excellent cohesion, controlled breathability to air and water vapor, an opaque appearance, and is easy to cut and convert to end use products such as garments, pads, diapers, and personal care products where elasticity is desired.
    Type: Grant
    Filed: October 31, 1997
    Date of Patent: May 2, 2000
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Mark Michael Mleziva, Richard Macferran Shane, Donald Vincent Willitts, Oomman Painumoottil Thomas, James Russell Fitts, Jr., Marion Clyde Morris
  • Patent number: 6054177
    Abstract: By depositing a thermoplastic resin powder inbetween the individual fibers of a reinforcing continuous fiber bundle and subsequently applying a solution of a binder resin dissolved in a solvent to the resulting reinforcing continuous fiber bundle, the thermoplastic resin powder is fixed inbetween the individual fibers via the binder resin which concurrently works to bind the individual fibers together. Then, the solvent of the binder resin is substantially removed from the resulting reinforcing continuous fiber bundle within a temperature zone not above the melting point or flow point of the thermoplastic resin powder. In the molding material produced by the method, the individual fibers of the reinforcing continuous fiber bundle, the individual fibers and the thermoplastic resin powder, and the individual thermoplastic resin powders are independently fixed together, all in a pin-point fashion via the binder resin, so the molding material contains substantially no solvent of the binder resin.
    Type: Grant
    Filed: November 13, 1997
    Date of Patent: April 25, 2000
    Assignee: Toho Rayon Co., Ltd.
    Inventors: Yoshihiro Endoh, Yoshio Iizuka
  • Patent number: 6048427
    Abstract: A method and apparatus for resin injected pultrusion is provided. The method comprises injecting a resin material into a reinforcement pack at a sufficiently high pressure such that the pressure in the injection area or weir of the injection die is substantially equal to the compression pressure applied by the exit portion of the injection die. An apparatus for achieving the method is also provided.
    Type: Grant
    Filed: October 31, 1997
    Date of Patent: April 11, 2000
    Assignee: Owens Corning Fiberglas Technology, Inc.
    Inventors: James V. Gauchel, Richard N. Lehman
  • Patent number: 6033510
    Abstract: A method for fabricating composite structures at a low-cost, moderate-to-high production rate. A first embodiment of the method includes employing a continuous press forming fabrication process. A second embodiment of the method includes employing a pultrusion process for obtaining composite structures. The methods include coating yarns with matrix material, weaving the yarn into fabric to produce a continuous fabric supply and feeding multiple layers of net-shaped fabrics having optimally oriented fibers into a debulking tool to form an undebulked preform. The continuous press forming fabrication process includes partially debulking the preform, cutting the partially debulked preform and debulking the partially debulked preform to form a netshape. An electron-beam or similar technique then cures the structure. The pultrusion fabric process includes feeding the undebulked preform into a heated die and gradually debulking the undebulked preform.
    Type: Grant
    Filed: September 23, 1997
    Date of Patent: March 7, 2000
    Assignee: The United States of America as represented by the United States National Aeronautics and Space Administration
    Inventor: Gary L. Farley
  • Patent number: 6033511
    Abstract: A method for fabricating composite structures at a low-cost, moderate-to-high production rate. A first embodiment of the method includes employing a continuous press forming fabrication process. A second embodiment of the method includes employing a pultrusion process for obtaining composite structures. The methods include coating yarns with matrix material, weaving the yarn into fabric to produce a continuous fabric supply and feeding multiple layers of net-shaped fabrics having optimally oriented fibers into a debulking tool to form an undebulked preform. The continuous press forming fabrication process includes partially debulking the preform, cutting the partially debulked preform and debulking the partially debulked preform to form a net-shape. An electron-beam or similar technique then cures the structure. The pultrusion fabric process includes feeding the undebulked preform into a heated die and gradually debulking the undebulked preform.
    Type: Grant
    Filed: September 23, 1997
    Date of Patent: March 7, 2000
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: Gary L. Farley
  • Patent number: 6030568
    Abstract: A method for producing a fibre reinforced three-dimensional product comprises depositing of long fibers in a mould consisting of a frame in which a carrier net for the fibers is suspended. The individual layers of a formed plane laminate are positioned in such a manner that only a first end is secured at a frame side. Said first ends are secured at different frame sides. In this manner it is possible, in a pressing procedure giving the product is three-dimensional shape, to obtain a virtually even distribution of the fibres, even in areas which are subjected to the longest move away from the plane original laminate. In this manner sound well-defined properties are obtained in the three-dimensional product formed.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: February 29, 2000
    Inventor: Torben Vestergaard
  • Patent number: 6010588
    Abstract: Novel fibers have been made of reactor grade isotactic poly-alpha-olefin wherein polypropylene is produced by single-site catalysis and has a melt flow rate of greater than zero to about 5,000, MWD in the range of about 1.0 to about 3.5.
    Type: Grant
    Filed: February 7, 1995
    Date of Patent: January 4, 2000
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Glenn Allan Stahl, James John McAlpin
  • Patent number: 6007655
    Abstract: A method, apparatus, and pultruded product formed by adding resin coated fibers at each of successive heated dies having respectively larger die openings to build up a composite pultruded product in stages. Each successive pultruded layer is cured at an exterior surface by heat from the die wall and at an interior surface by heat from the cured product emerging from the previous heated die. By forming the pultruded product in layers, higher line speeds, and a higher quality product which is consistently cured throughout its cross-section are achieved. Hybrid composites can be produced by varying the fiber type and/or the resin type in one or more stages.
    Type: Grant
    Filed: May 22, 1997
    Date of Patent: December 28, 1999
    Inventors: Ravi Gorthala, Daniel R. Flynn
  • Patent number: 5999281
    Abstract: A projection screen having a construction well-suited for effecting lateral color constancy in rear screen projection display systems is disclosed. The projection screen includes a holographic transmission diffuser element capable of diffusing a beam of light into a horizontally-elliptical cone and a light-collimating element for uniaxially-collimating by transmission an expanding wavefront with the axis of collimation substantially orthogonal to a horizontal viewing axis. The use of the projection screen in a rear screen projection display system including red, green and blue image projectors is also disclosed. A method of manufacturing a holographic projection screen by drawing a holographic transmission diffuser web and a uniaxial light collimating web into overlapping relationship and bonding the webs is also disclosed.
    Type: Grant
    Filed: September 2, 1998
    Date of Patent: December 7, 1999
    Assignee: Polaroid Corporation
    Inventors: Lynore M. Abbott, Michael M. Wenyon
  • Patent number: 5993713
    Abstract: Reinforced composite shapes and a method and an apparatus for the production of the reinforced composite shapes. Reinforcement elements such as steel rods, reinforcement fibers and resin are fed into a mold. The reinforcement elements are straightened, aligned and oriented before introduction into the mold.
    Type: Grant
    Filed: November 1, 1995
    Date of Patent: November 30, 1999
    Inventors: Enrique de la Puerta, Juan Manso
  • Patent number: 5989376
    Abstract: Disclosed are profiles of fiber-reinforced polymeric plastic and a pultrusion apparatus and method for the manufacture thereof. The apparatus is preferably vertically disposed. As one or more fibers is fed into the apparatus, each fiber is spread and wetted with monomer resin in a bundle spreader, formed in a die, and then subjected in a curing chamber to a source of radiation which initiates polymerization of the monomer, resulting in a fiber-reinforced polymeric plastic exiting from the pultrusion apparatus. Suitably, the radiation is ultraviolet, the monomer resin is methacrylate resin, and the fiber is quartz. The resultant profile is long and thin like a structural steel wire, but typically will have only 1/4 the weight thereof while having a strength comparable thereto. Thus, the profile is useful as an orthodontic wire as a replacement instead of structural steel wires used as orthodontic wires.
    Type: Grant
    Filed: November 20, 1997
    Date of Patent: November 23, 1999
    Assignee: The University of North Carolina at Chapel Hill
    Inventors: Robert P. Kusy, Kenneth C. Kennedy, II
  • Patent number: 5989710
    Abstract: A molding material for thermoplastic composites is provided. The molding material is prepared from a commingled yarn containing continuous thermoplastic fibers and continuous reinforcing fibers, in a form of threads, textile fabrics, knitted fabrics, or multiaxial laminated fabrics, wherein the fiber commingling parameter of said continuous reinforcing fibers in said commingled yarn is 20% or more, and wherein the orientation index after heat treatment of said continuous thermoplastic fibers is 0.3 or more, and/or the thermal shrinkage ratio of said continuous thermoplastic fibers is 15% or less.
    Type: Grant
    Filed: October 20, 1989
    Date of Patent: November 23, 1999
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Tatsuki Matsuo, Toshiaki Hokudoh, Kuniharu Mori, Yoshinobu Takahashi, Takeru Toida, Hiroshi Kawada
  • Patent number: 5985374
    Abstract: Dehydroxylated, silica-containing, glass surfaces are known to be at least partially terminated by strained siloxane rings. According to the invention, a surface of this kind is exposed to a selected silane compound or mixture of silane compounds under reaction-promoting conditions. The ensuing reaction results in opening of the strained siloxane rings, and termination of surface atoms by chemical species, such as organic or organosilicon species, having desirable properties. These species can be chosen to provide qualities such as hydrophobicity, or improved coupling to a polymeric coating.
    Type: Grant
    Filed: October 17, 1997
    Date of Patent: November 16, 1999
    Assignee: Lucent Technologies Inc.
    Inventors: Alexis Grabbe, Terry Arthur Michalske, William Larry Smith
  • Patent number: 5985071
    Abstract: A method of making a reinforced laminate, including the steps of placing a reinforcing grid on a first outer sheet of thermoplastic, preparing an elastomeric material capable of forming a tie layer between two sheets of thermoplastic, and laminating a second outer sheet of thermoplastic to the first sheet of thermoplastic and the reinforcing grid with the tie layer of elastomeric material therebetween, whereby the reinforcing grid is held by the elastomeric tie layer in between the first outer sheet of thermoplastic and the second outer sheet of thermoplastic, and the reinforcing grid being displaceable within the elastomeric tie layer.
    Type: Grant
    Filed: June 8, 1998
    Date of Patent: November 16, 1999
    Assignee: Reef Industries, Inc.
    Inventors: Lyndell Kyle Wynne, Abdeally Mohammed
  • Patent number: 5975177
    Abstract: A grommet strip manufacturing apparatus including a supply mechanism for feeding a grommet strip; a feed mechanism for feeding a cushion strip; and a guide for joining the moving grommet and cushion strips into a composite strip so as to provide longitudinally aligned engagement between an engagement surface of the grommet strip and a contact surface of the cushion strip. Also included is a dispenser for dispensing an adhesive between the engagement surface of the grommet strip and the contact surface of the cushion strip; a compression assembly for maintaining, for a given length of the composite strip, compression between the engagement and contact surfaces; and a take up mechanism for receiving from the compression assembly the composite strip.
    Type: Grant
    Filed: February 26, 1997
    Date of Patent: November 2, 1999
    Inventor: Hector D. Petri
  • Patent number: 5972147
    Abstract: A process is provided for producing a bonded nonwoven sheet from a lightly consolidated fibrous polyolefin sheet wherein the sheet is preheated on one or more preheating rolls, is bonded in one or more calendering nips, and is cooled on one or more cooling rolls. The process is used to make bonded polyolefin fibrous sheets that are smooth, are substantially impermeable to air and water, and are moisture vapor permeable.
    Type: Grant
    Filed: July 22, 1998
    Date of Patent: October 26, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Rudolph F. Janis
  • Patent number: 5954904
    Abstract: A head assembly for a pultrusion process for pultruding pultrudable material is provided. The head assembly includes a floating adjustable assembly carrying a pultrusion die. The die has a center line disposed proximate the center line of the process and an entrance, and an exit. The material passing from the entrance to the exit of the die in forming an acceptable finished shape is maintained when formed with the center line of the exit of the die always remaining stationary and disposed proximate the center line of the process.
    Type: Grant
    Filed: February 7, 1997
    Date of Patent: September 21, 1999
    Assignee: Stanley Rokicki
    Inventor: Stanley Rokicki
  • Patent number: 5944927
    Abstract: Security paper, security documents made from the security paper, and processes for making the security paper, are provided. A groove is formed in paper and a security element is positioned or bonded within the groove. A coating is applied over the security element so that the coating covers at least a portion of the security element and is coplanar with the surface of the paper. The security element may include any combination of security features for verification of document authenticity.
    Type: Grant
    Filed: May 29, 1997
    Date of Patent: August 31, 1999
    Assignee: The Standard Register Company
    Inventor: Harry Allen Seifert
  • Patent number: 5935368
    Abstract: A method of manufacturing a glue laminated structural wood member for bearing a structural load includes bonding together multiple elongate wood segments and a synthetic fiber reinforcement with their lengths generally aligned with the length of the member. The synthetic fiber reinforcement includes multiple synthetic fiber strands held within a resin matrix and low cost fiber edges.
    Type: Grant
    Filed: February 17, 1998
    Date of Patent: August 10, 1999
    Inventor: Daniel A. Tingley
  • Patent number: 5932149
    Abstract: An optical cable has tensile elements and supporting elements embedded in an extruded outside cladding. The tensile elements are hauled-off from a supply reel and introduced into an extruder head serving to manufacture the outside cladding. The supporting elements are manufactured in a coextrusion with the outside cladding by appropriate channels formed in the extruder head.
    Type: Grant
    Filed: February 6, 1997
    Date of Patent: August 3, 1999
    Assignee: Siemens Aktiengesellschaft
    Inventor: Reiner Schneider
  • Patent number: 5914002
    Abstract: The present invention relates to a method and to a system for producing a reinforcement for a composite component, formed by said reinforcement embedded in a cured matrix, said reinforcement comprising superposed plies of thread. According to the invention, the system comprises means (5) for the memory storage and processing of data, in which means the mathematical model of the reinforcement (A) to be produced may be created and stored in memory and which are capable of controlling means (3) for steering the tool (1) for laying down and/or stitching thread (F).
    Type: Grant
    Filed: July 9, 1996
    Date of Patent: June 22, 1999
    Assignee: Aerospatiale Societe Nationale Industrielle
    Inventor: Georges Cahuzac
  • Patent number: 5895539
    Abstract: Method of making a two-sided fiberglass tape measure with two differently colored nylon resin coatings characterized particularly in that a device is used that can coat simultaneously both sides of a fiberglass tape, both top and bottom, in a single forming step, yet producing two different colorations.
    Type: Grant
    Filed: November 7, 1997
    Date of Patent: April 20, 1999
    Inventor: Cheng-Hui Hsu
  • Patent number: 5895622
    Abstract: A composite manufacturing system moves a multi-fiber tow through a processing space. A resin particle source provides particles to the space. This source may include an airstream entrained with particles which is discharged into the space through an orifice; the airstream diverging as it enters the space. An electrode is disposed in the space to electrostatically charge the particles and facilitate deposition of the charged particles on the tow. In one embodiment, the electrode includes a corona wire disposed proximate to the tow to provide a generally cylindrical charging region. An electric field useful to direct deposition of the particles may be generated by appropriately shaping a wire electrode and orienting it in a predetermined manner relative to the tow. After the particles are deposited, a fixation unit may be used to at least partially melt the deposited particles. A processing stage may be included which has a pair of surfaces configured to heat and compress the tow therebetween.
    Type: Grant
    Filed: April 7, 1997
    Date of Patent: April 20, 1999
    Assignee: Purdue Research Foundation
    Inventors: Karthik Ramani, Daniel Edward Woolard, Mark Stephen Duvall
  • Patent number: RE36372
    Abstract: An elongated pile article having a support strand for attachment to a plurality of yarn bundles, the yarn bundles including a dense portion with the filaments bonded to each other and bonded to the support strand, pile surface structure comprised of a plurality of elongated pile articles placed one next to the other, and a method and apparatus for making the elongated pile article.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: November 2, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Donald William Edwards, James Kenton Odle, Peter Popper, Donald Montgomery Sadler, Harold Francis Staunton, William Charles Walker, Paul Wesley Yngve, Todd James Savidge