Glass Fiber Patents (Class 138/DIG2)
  • Patent number: 5934338
    Abstract: A method of insulating a heated surface comprising enveloping the surface by a first layer of a heat insulating material having a high thermal resistivity such as Mineral Wool, and enveloping the first layer by a second layer of a material having a lower thermal resistivity, such as Polyurethane.
    Type: Grant
    Filed: May 13, 1997
    Date of Patent: August 10, 1999
    Assignee: Isoltherm A.P. Ltd.
    Inventors: Alexander Perstnev, Samuel Perstnev
  • Patent number: 5799705
    Abstract: Fire resistant pipes and pipe fittings include a structural pipe wall formed from helically wound reinforcing fiber that is bonded together with a thermoset polymer resin selected from the group consisting of phenolic resins, siloxane-modified phenolic resins, furan resins, and mixtures thereof. In a first embodiment, a resin rich fire resistant layer is applied to the surface of the structural pipe wall. The carrier is capable of accommodating a large amount of resin. The resin used to impregnate the carrier is selected from the same group of resins used to form the structural pipe wall. It is desired that both resins be compatible, and preferably be the same, to facilitate forming a bond between the structural pipe wall and the fire resistant layer during cure.
    Type: Grant
    Filed: October 25, 1995
    Date of Patent: September 1, 1998
    Assignee: Ameron International Corporation
    Inventors: Ralph S. Friedrich, John F. Kane, Mark H. Fortune
  • Patent number: 5731527
    Abstract: A Coriolis flowmeter whose flow tubes are made, at least part, of anisotrophic materials such as fiber reinforced composites. The composite material is formed by controllably orienting the fibers in one direction to increase the tensile strength of the material in that direction. Selected areas of the flow tubes are formed of this composite in order to increase the flowmeter sensitivity and to better separate the desired flowmeter vibrational frequencies from the undesired vibrational frequencies. Circumferentially oriented fibers increase the internal pressure containment capability of the flow tubes. A strain gauge affixed to the flow tube flexes with flow tube deformation to indicate the internal flow tube pressure.
    Type: Grant
    Filed: September 20, 1996
    Date of Patent: March 24, 1998
    Assignee: Micro Motion, Inc.
    Inventor: Craig Brainerd Van Cleve
  • Patent number: 5560398
    Abstract: A coolant conduit which is an elongate tubular article for an apparatus requiring cooling by a cooling agent, such as an engine, for example, an internal combustion engine, includes a plurality of layers which are provided by sequential coextrusion thereof and which are adjoined thereby, each layer of the plurality being comprised of a polymeric material which is thermoplastically processable. The plurality of layers may include an inner layer which is composed of a polymeric material which is substantially inert to cooling agent and which is substantially non-swelling, and an outer layer which is composed of at least one polyamide and which is pressure resistant. The coolant conduit may include a plurality of longitudinal sections, and at least one layer of the plurality of layers may then be composed of a polymeric material which differs between longitudinal sections thereof as is made possible by sequential coextrusion thereof.
    Type: Grant
    Filed: December 22, 1994
    Date of Patent: October 1, 1996
    Assignee: EMS-INVENTA AG
    Inventor: Wolfgang Pfleger
  • Patent number: 5551484
    Abstract: A multi-layered liner for lining a pipeline which has an external jacket, an interior liner, a woven intermediate layer between the external jacket and the interior liner. At least one optical fiber is in the woven intermediate liner for purposes of monitoring stress or for communication, and a capacitance leak detection circuit is also in the multi-layered liner for the purpose of detecting leaks in the multi-layered liner. Also included is the method of monitoring a pipeline for stress or leakage by use of a stress detector connected to an optic fiber in a multi-layered liner installed in the pipeline and a leak detector connected to a capacitance circuit in a multi-layered liner installed in a pipeline.
    Type: Grant
    Filed: August 19, 1994
    Date of Patent: September 3, 1996
    Inventor: Kenneth R. Charboneau
  • Patent number: 5443098
    Abstract: The present invention is a thermoplastic pipe nipple for connecting a flexible fluid conduit to a tank, comprising a first elongated tubular portion with a first end for engaging the conduit, and a second end for engaging a second portion of the nipple. The second portion is attached to the tank. The first part preferably consists of a reinforced polyamide, and the second part preferably consists of a non-reinforced high density polyethylene. The first part has a lower tendency to deform under load than the second part.
    Type: Grant
    Filed: November 15, 1993
    Date of Patent: August 22, 1995
    Assignee: Rasmussen GmbH
    Inventor: Janos Kertesz
  • Patent number: 5406983
    Abstract: A corrosion-resistant connection for use with tubular members having externally threaded ends. The connection includes a stress-bearing sleeve member having an interior surface and an exterior surface; and a fiber-filled polymeric composite shell having at least one internally threaded portion therein, the composite shell molded to the sleeve so as to be coaxially aligned and in close conforming contact with at least a substantial portion of the interior surface of the sleeve member. The composite shell has a thickness of greater than about 0.04 inches.
    Type: Grant
    Filed: March 16, 1994
    Date of Patent: April 18, 1995
    Assignee: Mobil Oil Corporation
    Inventors: Michael R. Chambers, Richard A. Sukup
  • Patent number: 5368184
    Abstract: A vessel for use in the transportation of cryogenic liquids in over the road cryogenic tankers has a double wall with a highly efficient, relatively light weight fiber glass insulation in the cavity between the walls. The fiber glass insulation increases in density from the inner wall of the cavity to the outer wall of the cavity having the least density adjacent the cold inner wall of the vessel which contains the cryogenic liquid and the highest density adjacent the outer wall of the cavity which is exposed to ambient conditions. One or more layers of reflective septa can be incorporated into the fiber glass insulation to reduce radiant heat transfer.
    Type: Grant
    Filed: December 16, 1992
    Date of Patent: November 29, 1994
    Assignee: Schuller International, Inc.
    Inventors: Ralph M. Fay, Mark A. Albers
  • Patent number: 5213379
    Abstract: A fiber-reinforced plastic pipe with a male-threaded and/or female-threaded end joint section having improved axial strength and thread contour, exhibiting a high degree of seal tightness, and withstanding a high internal pressure. The female threads comprise a first resin layer, a second fiber-reinforced resin layer having continuous filaments extending at an angle of to the longitudinal axis of the pipe, and a third fiber-reinforced resin layer having continuous filaments extending at an angle of to to the longitudinal axis. The male threads comprise short fibers flocked in the radial direction on a fiber-reinforced plastic substrate layer and impregnated with a resin.
    Type: Grant
    Filed: November 20, 1990
    Date of Patent: May 25, 1993
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Kunitoshi Taniguchi, Minori Ishii, Masato Ohira
  • Patent number: 5194192
    Abstract: A method for preparing watertight and fireproof cable ducts through walls and ceilings. Cables are inserted into shaped parts, spacing the cables in the plane of the cable duct's frontal area. The remaining spaces between the wall of the cable duct and the spacers are filled with pieces of the same material. The modules used to construct the frontal walls include fibrous insulating material, such as long-fiber fiber glass insulating material or rock wool.
    Type: Grant
    Filed: October 30, 1991
    Date of Patent: March 16, 1993
    Assignee: STN Systemtechnik Nord GmbH
    Inventor: Heinrich Seebode
  • Patent number: 5176180
    Abstract: A composite tubular member having an outer cylindrical member containing fibers oriented to resist internal pressure and provide low bending stiffness, and two inner smaller core members located near the neutral axis of the composite tubular members containing fibers oriented to provide high axial stiffness, high tensile strength and low bending stiffness and fibers oriented to resist shear stress, positioned opposite each other and adjacent to the inner walls of the outer cylindrical member.
    Type: Grant
    Filed: March 15, 1990
    Date of Patent: January 5, 1993
    Assignee: Conoco Inc.
    Inventors: Jerry G. Williams, Mark W. Hopkins
  • Patent number: 5110644
    Abstract: A composite material tube, substantially insensitive to the variations of elongation under the effect of the internal pressure, comprising a number n of stable layers of reinforcement fibers, the fibers of each layer (i) being placed at the same winding angle in absolute value, referenced theta, with respect to the axis of the tube with an equal proportion of fibers wound at said angle in one direction (.vertline.theta.vertline.) as fibers wound in the opposite direction (-.vertline.theta.vertline.), the fibers of each layer being buried in a matrix which adheres to these fibers. The fibers of the same layer and the associated matrix have a volume referenced Y, the parallel fibers of the same layer and the associated matrix having overall a modulus of elasticity in the natural direction of the fibers, referenced E, wherein said n layers of fibers comply as a whole with the following relationship:0.35.ltoreq.A.ltoreq.0.
    Type: Grant
    Filed: June 4, 1990
    Date of Patent: May 5, 1992
    Assignee: Institut Francais Du Petrole et Aerospatiale
    Inventors: Charles Sparks, Pierre Odru, Marcel Auberon, Jean-Francois Fuchs
  • Patent number: 5091230
    Abstract: The tube, composed of a structural portion (1) of composite fibers encapsulated with thermosetting matrixes playing the part of a binder and obtained by filament winding, is provided with at least one inner coating (2) of a fibrous composite material impregnated with a thermoplastic binder, which is directly adjacent to the tubular portion formed by the structural portion (1) with the thermosetting binder.Application to oil production tubings.
    Type: Grant
    Filed: April 12, 1990
    Date of Patent: February 25, 1992
    Assignees: Aerospatiale Societe Nationale Industrielle, Institut Francais du Petrole
    Inventors: Jean-Francois Fuchs, Jean-Louis Tisne, Pierre Odru
  • Patent number: 5028056
    Abstract: The composite sealing element of the invention includes an elastomeric sealing lip portion and a base portion, chemically bonded to the sealing lip comprised of an elastomer reinforced with discrete dispersed fibers oriented in a preferential manner, and the sealing lip and base portions being chemically bonded together such as by covulcanization to form an integral sealing element resistant to delamination. The method involved forming a fiber loaded sheet in which the fibers are oriented generally unidirectionally, plying up the sheet to form the base portion of the sealing element, and molding the finished article under heat and pressure.
    Type: Grant
    Filed: November 24, 1986
    Date of Patent: July 2, 1991
    Assignee: The Gates Rubber Company
    Inventors: Steve Bemis, Erwin E. Stocker
  • Patent number: 5022459
    Abstract: A flexible hosing for circulation of a heat transfer fluid to effect heat exchange within a concrete or other type of slab. An inner wall comprising nylon, rayon or other similar material forms an inner wall of the hosing to resist corrosive attack by the heat transfer fluid. A locator wire is embedded within the hosing for transmission of a locating signal so that the position of the hosing within the slab may be accurately determined. The wire may also serve as an electrical resistance heating element should the heat transfer fluid become frozen, or should it be desired that the heat exchange system be operated without an external boiler or other heat source.
    Type: Grant
    Filed: December 6, 1988
    Date of Patent: June 11, 1991
    Inventors: Daniel T. Chiles, Richard M. Chiles
  • Patent number: 5009941
    Abstract: A thermoplastic impregnated fiberglass pipe or tube and the process for making such pipe are disclosed. The pipe or tube is made of thermoplastic impregnated fibrous roving which consists of a plurality of glass filaments, at least a portion of the filaments' surfaces being in contact with the residue produced by evaporating water from an aqueous size composition consisting of an organosilane coupling agent, a polyethylene oxide binder material, and a polypropylene thermoplastic polymer resin, wherein the composition is applied to the glass fiber during the fiber forming process. The pipe forming process includes filament winding the rovings around a spindle and thereafter heating the wound rovings to fuse the thermoplastic polymer resin.
    Type: Grant
    Filed: November 9, 1988
    Date of Patent: April 23, 1991
    Assignee: Owens-Corning Fiberglas Corporation
    Inventors: Jean-Claude Pollet, Gary L. Williams, Gordon P. Armstrong, David G. Miller
  • Patent number: 4971846
    Abstract: A fiber/thermoplastic resin matrix cylinder with a metal lining and a process for manufacturing such a cylinder using metal plasma spray and filament winding techniques are disclosed. In the manufacturing process, a molten metal plasma spray is deposited on a heated and rotating mandrel. After the metal layer has cooled, filament winding techniques are used to deposit a layer of graphite fibers and thermoplastic resin around the metal layer, after which the mandrel is removed. The metal layer remains bonded to the fiber/thermoplastic layer. The process results in a fiber/thermoplastic resin matrix cylinder of low cost, light weight, durability, and survivability.
    Type: Grant
    Filed: August 21, 1989
    Date of Patent: November 20, 1990
    Assignee: TRE Corporation
    Inventor: Brian T. Lundy
  • Patent number: 4934412
    Abstract: In a pipe line for an engine, in particular a cooling line in aircraft construction, the walls of the pipe line are composed of a load-bearing inner layer (2) of fibre reinforced, curable synthetic resin and of a heat insulating outer layer (3) of fibre reinforced curable synthetic resin, bonded to the inner layer (2). For the production of the two layers (2, 3) a removable core (1) is used, for example composed of a low melting metal alloy.
    Type: Grant
    Filed: March 10, 1988
    Date of Patent: June 19, 1990
    Assignee: Fischer Advanced Composite Components Gesellschaft m.b.H.
    Inventors: Josef Fischer, Walter A. Stephan
  • Patent number: 4900048
    Abstract: A bicycle frame made essentially entirely of an integrally bonded composite structure throughout its main structural tubular members and at the joints securing these tubular members to each other. The tubular members, which have round and aero cross sections, and the joints are laid up using layers and strips of high strength resin-impregnated unidirectional carbon fiber fabric. A non-compressible filler material is added at the joints to support the carbon fiber fabric so that its outer surfaces are all non-concave wherever possible.
    Type: Grant
    Filed: October 2, 1987
    Date of Patent: February 13, 1990
    Inventor: Gleb Derujinsky
  • Patent number: 4780347
    Abstract: An insulation system for pipes which includes segments of fiberglass insulation or other mineral fiber slit along their length for surrounding the pipe, a butt strip tape for sealing abutting ends of the segments of insulation, and means for sealing a flap on the insulation segment covering the slit after the pipe has been inserted therethrough. The butt strip tape is a laminated tape which includes a layer of paper, a layer of fiberglass, a layer of foil and a pressure sensitive acrylic adhesive. The means for sealing the slit may be either an adhesive film cast on a release liner and applied to the flap or a double sided adhesitve tape. The double sided tape is a laminate which has an adhesive layer on each side of a central, thin substrate. The adhesive used in all instances is an isooctyl acrylate polymer which is approximately a 100% acrylate compound having a solvent content no greater than 0.5%. The adhesive allows the tape to be applied at temperatures ranging frong F. to F.
    Type: Grant
    Filed: December 3, 1985
    Date of Patent: October 25, 1988
    Assignee: Venture Tape Corp.
    Inventor: Lewis S. Cohen
  • Patent number: 4775566
    Abstract: The present invention discloses a glass covered electrical insulation having an inner lining of glass fibers coated with a flexible, high temperature, electrically insulating silicon polymer, the electrically insulating layer then has a second layer of glass fibers overbraided on it and bonded to it by the use of a heat treating process. A further teaching is the method of making the flexible sleeving and a method of use. The sleeving is particularly adapted for use in VPI processing and has superior flexibility as well as higher temperature capabilities than sleeving of the prior art.
    Type: Grant
    Filed: August 15, 1986
    Date of Patent: October 4, 1988
    Assignee: Essex Group, Inc.
    Inventors: Louis G. Landry, Fabian Nunez
  • Patent number: 4745851
    Abstract: In this process a laminate of glass fiber and multicomponent reaction resin, and on top of this a layer of thermal insulation, is placed on the outer side of the stack lining composed of masonry or concrete which is resistant to aggressive media.
    Type: Grant
    Filed: August 8, 1986
    Date of Patent: May 24, 1988
    Assignee: Hoechst Aktiengesellschaft
    Inventor: Jan Duck
  • Patent number: 4693281
    Abstract: Filament wound pressure tube has layers of filaments wound helically. The filaments of each such layer are disposed at an angle to a line parallel to the longitudinal axis of said tube which angle is approximately equal to a respective angle .theta. to the line, such angle .theta. being chosen such that the ratio sin.sup.2 .theta./r is approximately the same for all layers, where r is the radial distance from said axis to the location of such layer.
    Type: Grant
    Filed: September 23, 1985
    Date of Patent: September 15, 1987
    Assignee: GA Technologies Inc.
    Inventor: Richard L. Creedon
  • Patent number: 4688605
    Abstract: A hose structure of simplified construction suitable for rigorous high pressure applications such as rotary well-drilling apparatus is described. The hose includes a heavy-walled tube of elastomeric material having a measured stress of at least 600 psi at 20 percent elongation, an elongation at rupture of at least 150 percent and a Young's modulus of at least 2000 psi. The formulation of the tube material includes a reactive resin system capable of polymerizing in situ.
    Type: Grant
    Filed: February 25, 1981
    Date of Patent: August 25, 1987
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: George W. Eisenzimmer, Robert C. Schisler
  • Patent number: 4670315
    Abstract: A process for providing a corrosion resistant synthetic plastic resin coating on a surface of a concrete structure comprises cleaning the surface of the concrete structure, forming a fiber containing sprayed concrete layer having a plurality of fiber components therein, for example glass fibers or plastic fibers, on the surface of the concrete, and subsequently applying a synthetic plastic resin thereto, whereby the fiber components projecting from the fiber containing sprayed concrete layer act to anchor the synthetic plastic resin to form the corrosion resistant coating. The corrosion resistant synthetic plastic resin coating preferably contains a polyester resin, and a polymer-cement-concrete base layer may be used to help bond the fiber containing sprayed concrete layer to the cleaned concrete surface.
    Type: Grant
    Filed: December 13, 1985
    Date of Patent: June 2, 1987
    Assignee: Hochtief Aktiengesellschaft vorm, Gebr. Helfmann
    Inventors: Bernd Hillemeier, Rolf Wichern
  • Patent number: 4657795
    Abstract: A tubular material based on a fabric reinforced resin, said material comprising layed up fabric layers, the inside and outside layers consisting of bidirectional braided sheaths, said latter two layers sandwiching an intermediate, unidirectional braid consisting primarily of parallel, longitudinal yarns at least 10% of which have a high tensile strength and the remainder of which are yarns of the same type as the yarns of said bidirectional braids. An application in the construction of a bicycle frame is described.
    Type: Grant
    Filed: September 5, 1985
    Date of Patent: April 14, 1987
    Assignee: Technique du Verre Tisse S.A.
    Inventor: Regis Foret
  • Patent number: 4601367
    Abstract: A crash protection structural component is constructed as a hollow sleeve pe body which is open at its ends. The hollow body is made of at least one strand of fiber compound material formed into a netting. The netting is constructed for an irreversible stepwise take-up of energy in response to a shock load or impact, whereby the strand layers delaminate at the strand intersections or junctions of the netting as the strand layers are taking up shearing loads in response to a compression load which is applied to the component in the direction of its longitudinal axis.
    Type: Grant
    Filed: January 10, 1985
    Date of Patent: July 22, 1986
    Assignee: Messerschmitt-Boelkow-Blohm Gesellschaft mit beschraenkter Haftung
    Inventor: Bernd Bongers
  • Patent number: 4595615
    Abstract: An insulation system for pipes which includes segments of fiberglass insulation surrounding the pipe and tape sealing abutting ends of the segments of insulation. The tape is a laminated tape which includes a layer of paper, a layer of fiberglass, a layer of foil and a pressure sensitive acrylic adhesive. The adhesive is an isooctyl acrylate polymer which contains no fillers, except for a cross linker. The tape may be applied at temperatures ranging from F. to F.
    Type: Grant
    Filed: October 5, 1984
    Date of Patent: June 17, 1986
    Assignee: Venture Tape Corp.
    Inventor: Lewis S. Cohen
  • Patent number: 4589562
    Abstract: Structures, such as pressure vessels or pipes, for the storage and transportation of fluids under pressure are wrapped with a composite material including a high-strength unidirectional filament material in a matrix of a flexibilized isophthalic polyester resin which has an elongation at least equal to the elongation of the material of the structure. The index of refraction of the resin is matched to the index of refraction of the filament material so that the pressure vessel is visible through the wrapping. The resin discolors when exposed to a heat above which the material of the structure weakens, thus acting as an indicator that the structure is unsuitable for use.
    Type: Grant
    Filed: March 28, 1984
    Date of Patent: May 20, 1986
    Inventor: Norman C. Fawley
  • Patent number: 4577736
    Abstract: The invention relates to a tubular member, especially for safety steering columns for motor vehicles, made of wound fiber-reinforced materials. The winding angle of the fibers or fiber belts amounts to essentially relative to the tube's longitudinal axis. For taking up high torsional moments and simultaneously low compressive and buckling or bending loads, the tubular member (1) has an expanded outwardly bulging section (3) extending around the entire circumference of the tubular member. This bulging section is preferably a double conical outward bulge. The fibers (2) cross each other at an angle of essentially even in the region of the outwardly bulging section (3), which means that the winding angle of essentially to the tube's longitudinal axis is maintained in the region of the outwardly bulging section (3).
    Type: Grant
    Filed: May 21, 1984
    Date of Patent: March 25, 1986
    Assignee: Messerschmitt-Boelkow-Blohm Gesellschaft mit beschraenkter Haftung
    Inventors: Bernd Bongers, Horst Bansemir
  • Patent number: 4559974
    Abstract: A crack arrester for stopping a propagating ductile fracture in an object such as a pipe comprises a band defined by a plurality of continuous, high tensile strength, nonmetallic fibers which are wound around the object in intersecting relationship with the direction of propagation and are encapsulated in a resin matrix which is cured.
    Type: Grant
    Filed: July 25, 1984
    Date of Patent: December 24, 1985
    Inventor: Norman C. Fawley
  • Patent number: 4514245
    Abstract: According to the method of the invention there is wound, around a hollow body (1) and in substantially contiguous turns, a flexible strip (2), the latter strip being fixed onto the hollow body. The strip is of a material, the tensile limit of which is in excess of that of the material of which the hollow body (1) is made, and when wound around the hollow body, a tension is applied thereto which is sufficient for the stresses which may develop within the body and the winding of the strip (2) to reach their permissible maximum limits at substantially the same time, when the hollow body is used under pressure.
    Type: Grant
    Filed: May 4, 1982
    Date of Patent: April 30, 1985
    Assignees: Spie-Batignolles, Coflexip
    Inventor: Gilbert Chabrier
  • Patent number: 4508370
    Abstract: A rigid, molded fiberglass duct having an integral bendable elbow comprised of two sections of cured fiberglass securely bonded to a corrugated metal-foil sleeve. The method of manufacturing the rigid bendable duct is by sliding a corrugated metal-foil sleeve on to a mandrel and then wrapping the ends of the sleeve with uncured fiberglass. The area of the uncured fiberglass overlapping the corrugated, bendable sleeve is compacted by means of a collar which fits around the sleeve and the fiberglass and compresses the fiberglass into the corrugations of the sleeve. In order to enhance the bond, protusions may be provided in the overlapping area of the sleeve, such as by cutting the corrugated sleeve and bending it up to form tabs.
    Type: Grant
    Filed: August 1, 1983
    Date of Patent: April 2, 1985
    Inventor: Clifford A. Schroeder
  • Patent number: 4421202
    Abstract: A sound attenuator comprising concentric inner and outer tubular members having sound absorbing material positioned therebetween. The inner tubular member comprises a lattice of reinforcing strand material coated with solidified resin wherein the strand material is formed in opposed generally helical patterns to provide the lattice. The attenuator is suitable for use in reducing noise produced by axial flow fans used in industrial environs such as mines and factories.
    Type: Grant
    Filed: March 20, 1981
    Date of Patent: December 20, 1983
    Assignee: Peabody ABC Corporation
    Inventor: Robert W. Hoy
  • Patent number: 4412561
    Abstract: A glass fiber-reinforced cement non-plate article is composed of an inside mortar layer comprising a mixture of normal Portland cement and glass fiber chopped strand, an outside mortar layer comprising a mixture of normal Portland cement and glass fiber chopped strand, and a regulated set cement mortar layer interposed between said both layers by the aid of a continuous glass fiber layer.
    Type: Grant
    Filed: January 7, 1981
    Date of Patent: November 1, 1983
    Assignee: Kurimoto Iron Works, Ltd.
    Inventors: Keizo Sakaguchi, Shigeru Takeuchi
  • Patent number: 4391301
    Abstract: A filament wound structural vessel includes a cylindrical wall formed of a cured thermosetting resin reinforced by fibrous material. An opening in the wall is reinforced by a series of reinforcement bands formed by filament windings that encircle the wall and run adjacent the opening.
    Type: Grant
    Filed: August 27, 1981
    Date of Patent: July 5, 1983
    Assignee: A. O. Smith Corporation
    Inventor: Fred R. Pflederer
  • Patent number: 4389587
    Abstract: An improved high dielectric strength unitary insulation sleeving is described. The insulation sleeving comprises an inner insulating layer such as woven fiberglass overcoated with an insulation resin such as an acrylic resin, having an additional insulating layer such as fiberglass overbraided upon it. The overbraided layer is secured to the inner resin-sleeving member by means of an additional impregnation with an electrically insulating binder resin, such as acrylic, to secure the composite together. This material, in addition to having the requisite mechanical and electrical properties for use on coil leads, is specifically adapted to VPI processing and can be utilized reliably with minimal effort. For example, the material has comparable and, in some instances, superior dielectric breakdown voltages as compared to conventionally used sleeving and is not subject to layer slippage which can decrease electrical properties, as can occur with conventionally used materials.
    Type: Grant
    Filed: November 23, 1981
    Date of Patent: June 21, 1983
    Assignee: United Technologies Corporation
    Inventors: Herbert R. Levine, L. Gerard Landry
  • Patent number: 4351364
    Abstract: A steel reinforced pipe has a structural wall section sandwiched between inner and outer linings. The inner and outer linings each comprise resin-rich layers reinforced with glass or other fibers to impart the desired characteristics to the inner and outer pipe surfaces. The structural wall section comprises three or more structural steel reinforcing strips encapsulated with a structural epoxy resin and helically wound in the form of helical convolutions one over the other about the pipe axis such that the convolutions of each strip are axially separated from one another, by the epoxy resin, a distance not greater than 3 mm and radially separated from the convolutions of the next adjacent strip, by the epoxy resin, a distance not greater than 0.25 mm. The structural steel reinforcing strips preferably have a width between 100 mm and 200 mm and a thickness between 0.25 mm and 0.75 mm.
    Type: Grant
    Filed: November 5, 1979
    Date of Patent: September 28, 1982
    Assignee: Dunlop Limited
    Inventor: Philip J. Cocks
  • Patent number: 4347271
    Abstract: The disclosure embraces a method of spraying a binder composition of hybrid character containing both organic and inorganic materials into a fiber-forming hood or chamber onto glass fibers produced by a fiber-forming process, the disclosure embracing fibrous insulation products, such as pipe insulation and block insulation, the products embodying hybrid binder composition wherein the organic phase of the binder composition improves moldability and handleability of the fibrous product during processing and installation and which provides hardness and toughness characteristics in the products to resist or prevent handling damage and physical damage in use, the inorganic phase of the binder system providing high bond strength and improved thermal stability in the product particularly under high temperatures which may volatilize the organic binder, the inorganic phase of the binder system preventing or resisting fiber slump under high temperature conditions.
    Type: Grant
    Filed: April 20, 1981
    Date of Patent: August 31, 1982
    Assignee: Owens-Corning Fiberglas Corporation
    Inventor: Richard F. Shannon
  • Patent number: 4343843
    Abstract: A fiber reinforced epoxy resin article in which a Lewis base is employed as the catalyst for the addition reaction of a phenolic or alcoholic hydroxyl group and the oxirane group of the epoxy resin. The resin system has improved flexibility and pot life and the cured article has improved chemical resistance.
    Type: Grant
    Filed: August 28, 1980
    Date of Patent: August 10, 1982
    Assignee: A. O. Smith-Inland, Inc.
    Inventors: Junior L. Johnson, Leonard E. Pikey
  • Patent number: 4340090
    Abstract: A product obtained by mixing a vinyl-containing poly- diorganosiloxane, an organohydrogenpolysiloxane, a silica filler treated with dimethyldichlorosilane, optionally diphenylsilanediol, and a platinum catalyst is useful for treating glass fiber and is an electrical insulating material. The cured product has excellent electrical characteristics, flame retardancy, mechanical strength, and transparency.
    Type: Grant
    Filed: August 21, 1981
    Date of Patent: July 20, 1982
    Assignee: Toray Silicone Company, Ltd.
    Inventors: Takao Matsushita, Kazuo Hirai
  • Patent number: 4311726
    Abstract: The invention relates to a method for manufacturing a hihg-tensile strength optical waveguide with a plastic layer of the epoxy-acrylate type located on the lightguide fiber, wherein a radiation-hardenable prepolymer is applied to the lightguide fiber immediately after the fiber-drawing process. The invention provides for the use in such a method of a preopolymer, which can be hardened by actinic radiation, of at least one acylated hydroxy ester of acrylic and/or methacrylic acid and an epoxide with n.ltoreq.3 epoxide groups per molecule. The optical waveguides manufactured by the method according the present invention are suitable particularly for purposes of optical information transmission.
    Type: Grant
    Filed: May 30, 1980
    Date of Patent: January 19, 1982
    Assignee: Siemens Aktiengesellschaft
    Inventors: Heinz Hacker, Hubert Aulich, Josef Grabmaier, Nikolaos Douklias
  • Patent number: 4289172
    Abstract: A reinforced bitumen pipe has an inner, strength-providing, reinforced thermosetting resin layer which is coated on its inner and outer sides with a bitumen layer. The bitumen layer on the inner side, and preferably also the bitumen layer on the outer side, is separated from the strength-providing reinforced thermosetting resin layer with the aid of an insulating glass fiber layer into which the thermosetting resin and the bitumen partially penetrate without finding their way up to each other.
    Type: Grant
    Filed: May 1, 1979
    Date of Patent: September 15, 1981
    Inventor: Stig O. M. Ekstrom
  • Patent number: 4273599
    Abstract: A polyester resin composition is disclosed. The composition consists essentially of a blend of a diethylene glycol:neopentyl glycol:maleic:isophthalic acid polyester and a propylene glycol:isophthalic acid:maleic polyester, together with a copolymerizable monomer in an amount sufficient for reaction with the polyester blend to produce a thermoset article. In a preferred disclosed composition, the blend is composed from about 5 to 15 percent by weight of the diethylene glycol polyester and from about 95 to 85 percent of the propylene glycol polyester, together with from 35 to 45 percent by weight of styrene as a copolymerizable monomer, based upon the weight of the polyester blend and styrene.
    Type: Grant
    Filed: July 2, 1979
    Date of Patent: June 16, 1981
    Assignee: Owens-Corning Fiberglas Corporation
    Inventor: Frederick A. Butt
  • Patent number: 4269234
    Abstract: A high strength pipe comprising a corrugated metallic tube defining a series of annular troughs therewithin and a resinous material lining the interior surface to fill the troughs and create a smooth and corrosion resistant surface.
    Type: Grant
    Filed: May 18, 1979
    Date of Patent: May 26, 1981
    Assignee: Tri State Culvert Corporation
    Inventors: Doyle F. Johnson, Nelson F. Goetz
  • Patent number: 4239063
    Abstract: A manifold with a knitted resin impregnated sleeve that is fabricated as a ontinuous unseamed configured sleeve and installed in the manifold to produce a seamless structure. The sleeve is knitted or woven from conventional materials and then install in the manifold to provide insulation for the manifold structure.
    Type: Grant
    Filed: March 29, 1978
    Date of Patent: December 16, 1980
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Richard L. Long
  • Patent number: 4201247
    Abstract: The disclosure embraces a fibrous product comprising amorphous glass fibers and crystallizable mineral fibers wherein the mineral fibers may be formed of fusible rock, slag, basalt rock or fibers formed of blends or mixtures of these materials or crystallizable ceramic fibers and to a method and apparatus for forming or processing blends, composites or laminations of such fibers to produce several composite fibrous end products having various uses such as fire rated acoustical tile and ceiling board, high temperature block and pipe insulations, roofing insulation, form board, fire rated cores for walls and doors, fire rated hardboard and building, pouring and blowing wool insulation.
    Type: Grant
    Filed: June 29, 1977
    Date of Patent: May 6, 1980
    Assignee: Owens-Corning Fiberglas Corporation
    Inventor: Richard F. Shannon
  • Patent number: 4173670
    Abstract: A tubular composite structure for transmitting forces comprises a metal tubular core, preferably of aluminum, having a layer of structural metal adhesive on the exterior surface of the core. On top of the structural adhesive layer are alternating laminae of resin impregnated unidirectional reinforcing fibers, particularly carbon or graphite fibers, and of woven fiberglass, beginning with a layer of woven fiberglass followed by a lamina of resin impregnated continuous unidirectional reinforcing fibers and continuing in alternating fashion but ending with a final layer of resin impregnated continuous unidirectional reinforcing fibers, each successive layer of resin impregnated continuous unidirectional fibers having the fibers oriented at an angle of between about to with respect to the longitudinal axis of the metal tube and in opposite orientation with respect to the next preceding layer. The fibers in the woven fiberglass layer are oriented at and
    Type: Grant
    Filed: May 27, 1977
    Date of Patent: November 6, 1979
    Assignee: Exxon Research & Engineering Co.
    Inventor: Richard L. VanAuken
  • Patent number: 4171626
    Abstract: A carbon fiber reinforced composite tubular drive shaft is provided wherein the fibrous reinforcement is positioned in a structural configuration capable of yielding improved service characteristics. The wall of the drive shaft comprises at least four bonded circumferentially disposed layers composed of appropriate fibrous reinforcement situated within a resin matrix (as described). The carbon fibers are disposed generally longitudinally in a layer at an intermediate position within the tube wall and are capable of efficiently increasing the stiffness of the shaft. The overall requirement for the carbon fiber component of the fibrous reinforcement is minimized. Glass fibers likewise are disposed generally longitudinally in a layer at an intermediate position within the tube wall and are capable of economically contributing resistance to torsion buckling to the overall drive shaft without deleteriously influencing the critical speed of the drive shaft.
    Type: Grant
    Filed: March 27, 1978
    Date of Patent: October 23, 1979
    Assignee: Celanese Corporation
    Inventors: Derek N. Yates, David B. Rezin
  • Patent number: RE30489
    Abstract: A lightweight composite fiber wound tubular member or casing, such as a rocket motor case, has one or more openings formed through one end portion of the wall thereof by orienting the filaments or fibers around each opening to provide reinforcement for loads applied to fasteners passing through said openings. The orientation of the filaments or fibers is such as to receive and transfer loads applied to the walls of the openings in the tubular member in a direction substantially parallel to the axis of the tubular member. A method of manufacturing the tubular member is disclosed which includes winding the filaments or fibers along a helical path and around the area defining each opening, together with the apparatus for performing the method.
    Type: Grant
    Filed: July 23, 1979
    Date of Patent: January 20, 1981
    Assignee: Brunswick Corporation
    Inventor: Harry T. Abbott