Embedded Patents (Class 138/132)
  • Patent number: 10472201
    Abstract: A core for winding sheet material is proved. The core comprises a cylindrical tube having a longitudinally oriented slot formed therein, and a strip of soft material located in the slot. Because of the geometry of the slot and the strip, the strip may be softer in the central region but firmer where the core transitions from the relatively soft strip to the relatively hard tube. The leading edge of the sheet material imbeds itself into the soft central region of the strip as additional layers are wound around the core.
    Type: Grant
    Filed: October 12, 2016
    Date of Patent: November 12, 2019
    Assignee: Sonoco Development, Inc.
    Inventors: Brian P. Couchey, John Wrenn
  • Patent number: 9896800
    Abstract: A method for producing a tubular underwater pipe including: assembling a structure of peripheral metal elements (3A, 3B, 3C) wound in an S-Z configuration about a central flexible core (1) as the core is driven in movement along its longitudinal axis; providing an inductive sensor (12) arranged for rotation about the central flexible core (1) in a manner synchronized with the longitudinal movement of the core so that the sensor scans the periphery of the structure opposite and in the immediate proximity of peripheral elements wound about the core and during the assembly step; using the sensor (12) to acquire measurement signals (S) of which the amplitude varies according to whether or not the sensor (12) is located opposite a peripheral element during the rotation of the sensor (12); and using the measurement signals to control the positioning of the assembled peripheral elements.
    Type: Grant
    Filed: November 14, 2013
    Date of Patent: February 20, 2018
    Assignee: TECHNIP FRANCE
    Inventor: Mickaël Melot
  • Publication number: 20150059908
    Abstract: Represented and described is a plastic hose, comprising: a hose wall of plastic, and a fabric reinforcement. In order to ensure that the cross-sectional shape or area of the hose, and in particular the thickness of the hose wall, can be varied in a simple manner, it is proposed that the hose wall be manufactured from one or a plurality of spirally-wound plastic strips.
    Type: Application
    Filed: August 28, 2014
    Publication date: March 5, 2015
    Inventor: Burkhard Mollen
  • Publication number: 20150027580
    Abstract: The invention relates to an elongate reinforcement element for reinforcing an unbonded flexible pipe, a method of producing the elongate reinforcement element and an unbonded flexible pipe comprising the elongate reinforcement element. The reinforcement element comprises a plurality of elongate armor strips and an elongate support element comprising a channel, wherein the plurality of elongate armor strips are arranged in the channel of the elongate support element. Preferably the elongate armor strips are arranged to be superimposed in the channel and the plurality of superimposed elongate armor strips are displaceable in relation to each other upon bending of the elongate reinforcement element.
    Type: Application
    Filed: March 12, 2013
    Publication date: January 29, 2015
    Applicant: National Oilwell Varco Denmark I/S
    Inventor: Kristian Glejbol
  • Patent number: 8815353
    Abstract: The present invention generally relates to wireless flexible hose articles and methods. Some embodiments include low-mass hoses. Furthermore, some embodiments can comprise methods for making and/or using such hose articles.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: August 26, 2014
    Assignee: Veyance Technologies, Inc.
    Inventors: Bruno Ranieri Torchio, Antonio Rodrigues Da Silva
  • Patent number: 8752591
    Abstract: The flexible hose of the present invention is crush resistant, burst resistant, and virtually impossible to kink in normal use and is applicable to hoses that are designed for delivering virtually any kind of fluid including water, organic liquids, aqueous based herbicides, aqueous based insecticides, industrial chemicals, beverages, air, industrial gases, vacuum, and the like. The hose design of the present invention is particularly applicable to garden hoses for the delivery of water. In fact, garden hoses having the construction of the present invention are highly resistant to kinking and almost never kink when being used in conventional lawn, garden, and cleaning applications.
    Type: Grant
    Filed: April 25, 2011
    Date of Patent: June 17, 2014
    Assignee: Veyance Technologies, Inc
    Inventors: Anthony Montalvo, Robert H. Vogliano, Marc Borowczak
  • Publication number: 20140158247
    Abstract: The invention relates to an unbonded flexible pipe for offshore applications comprising an internal sealing sheath and at least one armoring layer comprising at least one helically wound fibre containing elongate armoring element, wherein the fibre containing elongate armoring element comprises polymer material, and at least about 5% by weight of polypropylene fibers.
    Type: Application
    Filed: April 12, 2012
    Publication date: June 12, 2014
    Applicant: NATIONAL OILWELL VARCO DENMARK I/S
    Inventor: Mikael Kristiansen
  • Patent number: 8418729
    Abstract: A seamless convoluted hose assembly. The assembly includes: a tubular inner liner having an outer surface, an inner surface, and an inner liner wall therebetween which defines a passageway. The assembly further includes a helical coil or a plurality of annular loops which produce convolutions in the outer surface of the tubular liner when the tubular inner liner is forced through the helical coil or plurality of loops under heat and pressure.
    Type: Grant
    Filed: January 16, 2009
    Date of Patent: April 16, 2013
    Inventors: Norman S. Martucci, Michael A. Martucci
  • Patent number: 8312899
    Abstract: A hose consisting of a smooth tubular wall and a rib wound spirally on the smooth tubular wall. The hose includes at least one duct portion and at least one connection portion; in the connection portions, the rib is wound spirally with a narrower pitch than on the duct portions.
    Type: Grant
    Filed: May 1, 2009
    Date of Patent: November 20, 2012
    Assignee: Covidien AG
    Inventors: Giuseppe Zucchi, Daniele Resca, Tamara Baraldi
  • Publication number: 20120118423
    Abstract: A spoolable pipe is disclosed, the spoolable pipe having an internal pressure barrier formed about a longitudinal axis, and a reinforcing layer(s) enclosing the internal pressure barrier. In one embodiment, the reinforcing layer(s) can include fibers having at least a partial helical orientation about approximately thirty and about approximately seventy degrees relative to the longitudinal axis, and, the wall can include at least one external layer enclosing the reinforcing layer(s) and having a permeability at least ten times greater than the permeability of the internal pressure barrier. The reinforcing layer(s) can further include a coating. The pipe can also include an energy conductor(s) integrated with and/or located between the internal pressure barrier and/or the reinforcing layer(s).
    Type: Application
    Filed: July 14, 2011
    Publication date: May 17, 2012
    Inventors: Peter A. Quigley, Michael Feechan, Thomas W. Wideman
  • Patent number: 8087430
    Abstract: A leak detecting hose for transporting fluid. The hose has an inner and outer layer. The outer layer circumscribes the inner layer. A transition layer is located between the inner and outer layer, and the transition layer provides a flow path for the fluid in the hose when the inner layer is breached. A first conductive wire is placed in contact with the transition layer, and a second conductive wire is placed in contact with the transition layer. The conductive wires are adjacent to and spaced from each other. When the inner layer of the hose is breached, the first and second wires will contact the fluid in the flow path. The conductive wires are radially equidistant from the center of the hose and helically wound around the inner layer. The transition layer may include reinforcement material, which can have filaments that provide a flow path for the fluid.
    Type: Grant
    Filed: February 26, 2009
    Date of Patent: January 3, 2012
    Inventors: James C. Betz, Geoffrey A. Barnes
  • Patent number: 8082954
    Abstract: A flexible pipe for transporting a fluid in a marine environment. The pipe comprises a liner for confining the fluid, an armoring layer surrounding the liner, and an outer protective sheath surrounding the armoring layer and allowing radial expansion and contraction of the armoring layers. The outer protective sheath comprises at least two protective layers of helically wound composite wires with essentially opposite winding angles and locally held together, providing a relatively flexible yet fixed structure of the outer sheath. The outer sheath is held together in an array of discrete spots or along linear or curved paths. Flexibility is maintained because the stiffness in shear in the wires of adjacent protective layers may be made much larger in areas being locally held together than outside these areas. This allows a change of angles between the wires of two adjacent layers of the outer protective sheath during elongation or shortening of the pipe.
    Type: Grant
    Filed: October 29, 2004
    Date of Patent: December 27, 2011
    Assignee: NKT Flexibles I/S
    Inventor: Jan Rytter
  • Patent number: 8056584
    Abstract: A flexible hose construction with kink, crush, and burst resistance. The hose is constructed of a tubular member and a reinforcement strip at least partially embedded in the tubular member. The reinforcement strip is wound in a helical pattern encircling a central lumen of the tubular body. The material forming the reinforcement strip has a greater initial modulus than the material forming the tubular member.
    Type: Grant
    Filed: September 25, 2006
    Date of Patent: November 15, 2011
    Assignee: Veyance Technologies, Inc.
    Inventors: Thomas George Burrowes, David Joseph Maguire, Douglas Michael Gilg, Jenny Zhaoxia Yu
  • Publication number: 20110079313
    Abstract: A hose for a hose pump comprises inner plies (20) and outer plies (22) separated by a filler layer (24). The inner (20) and outer plies (22) are helically wound in opposite directions and the inner plies (20) are at a shallower angle than the outer plies (22).
    Type: Application
    Filed: January 22, 2009
    Publication date: April 7, 2011
    Applicant: Dunlop Oil & Marine Limited
    Inventors: Ali Reza Kambiez Zandiyeh, Marco Musto
  • Publication number: 20110036441
    Abstract: A flexible duct with a frame made by winding a S-profiled metal strip into clamped turns, wherein the edges of two adjacent turns overlap each other in order to form between them a helical closed space having an essentially rectangular cross-section and at least partially filled by a helically-wound spacer separate from the metal strip and resting on at least two opposing walls of the lower surface and the upper surface, wherein the spacer has, in the winding radial direction, a crush resistance substantially equal to zero and, in the winding longitudinal direction along the pipe, a substantial crush resistance.
    Type: Application
    Filed: August 13, 2007
    Publication date: February 17, 2011
    Inventors: Patrice Joël Louis Jung, Philippe Secher
  • Publication number: 20100269941
    Abstract: A leakage-sensing device for installation adjacent to a pipeline configured for conveying liquid or gaseous chemical materials. The leakage-sensing device comprises a length of cable configured to transmit and back-reflect signals. The cable is communicable with a signal-measuring device. The entire length of cable is encompassed by a torsioned and tensioned coiled biasing means. The cable and the torsioned and tensioned coiled biasing means are embedded in a chemically frangible casing material. The chemically frangible material is selected for its structural instability when contacted with the selected chemical material to be conveyed within the pipeline thereby releasing the torsioned and tensioned biasing means which subsequently imparts bending and/or twisting and/or elongating and/or contracting forces to the cable thereby causing the cable to physically interfere with and/or deform and/or break the transmission and back-reflection of signals along the cable.
    Type: Application
    Filed: February 2, 2007
    Publication date: October 28, 2010
    Applicant: UNIVERSITY OF REGINA
    Inventor: Elmer H. Hara
  • Patent number: 7766049
    Abstract: This is a balloon catheter having at least two lumens. One of the lumens is a large working lumen. The balloon catheter is especially useful as a guide catheter or micro catheter and may be used in a variety of therapeutic and diagnostic procedures. In particular, it has value in treating neurovascular embolic strokes in combination with other devices which are delivered to the stroke site through that working lumen. The remainder of the lumens typically are used to inflate and to deflate the balloon.
    Type: Grant
    Filed: October 22, 2003
    Date of Patent: August 3, 2010
    Assignee: Concentric Medical, Inc.
    Inventors: John Miller, Martin Dieck, Maria Aboytes, Ryan K. Pierce
  • Publication number: 20100180975
    Abstract: A seamless convoluted hose assembly. The assembly includes: a tubular inner liner having an outer surface, an inner surface, and an inner liner wall therebetween which defines a passageway. The assembly further includes a helical coil or a plurality of annular loops which produce convolutions in the outer surface of the tubular liner when the tubular inner liner is forced through the helical coil or plurality of loops under heat and pressure.
    Type: Application
    Filed: January 16, 2009
    Publication date: July 22, 2010
    Inventors: Norman S. Martucci, Michael A. Martucci
  • Patent number: 7716803
    Abstract: A method of fabricating a flexible pipe for conveyance of fluid, comprising: winding at least one metal element in a short pitch helix around an inner sealing sheath for withstanding radial forces in the inner sealing sheath; preshaping a metal strip to form at least one ply of tensile armor tendons; winding the ply of tensile armor tendons in a long pitch helix around the at least one metal element; and applying an external protective sealing sheath around the at least one ply of tensile armor tendons.
    Type: Grant
    Filed: December 17, 2004
    Date of Patent: May 18, 2010
    Assignee: Technip France
    Inventors: Alain Coutarel, Francois Dupoiron, Philippe Francois Espinasse
  • Publication number: 20100071795
    Abstract: A flexible hose construction with enhanced levels of kink, crush, and burst resistance. The hose includes an inner tubular member, an outer tubular member, a yarn layer disposed between the inner and outer tubular members, and a plurality of reinforcement strips within the outer tubular member. The reinforcement strips are helically wound with a given pitch about the lumen of the tubular member. The outer tubular member is composed of a first compound containing an olefin block copolymer and a styrene/ethylene-butylene/styrene-based thermoplastic elastomer. The reinforcement strips are composed of a second compound containing a thermoplastic elastomer and a polypropylene homopolymer.
    Type: Application
    Filed: September 22, 2008
    Publication date: March 25, 2010
    Applicant: VEYANCE TECHNOLOGIES, INC.
    Inventors: Anthony Montalvo, Robert H. Vogliano
  • Patent number: 7658208
    Abstract: A flexible hose construction with kink, crush, and burst resistance. The hose is constructed of a tubular member and a reinforcement strip at least partially embedded in the tubular member. The reinforcement strip is wound in a helical pattern encircling a central lumen of the tubular body. The material forming the reinforcement strip has a greater initial modulus than the material forming the tubular member.
    Type: Grant
    Filed: December 5, 2006
    Date of Patent: February 9, 2010
    Assignee: Veyance Technologies, Inc.
    Inventors: Thomas George Burrowes, David Joseph Maguire, Douglas Michael Gilg, Jenny Zhaoxia Yu
  • Patent number: 7614428
    Abstract: A new and improved power steering hose assembly is described, which may comprise a core hose layer, a first reinforcing layer, an intermediate hose layer, a second reinforcing layer and an outer hose layer. The first reinforcing layer has a braid pattern formed in a 1-over, 1-under pattern. The intermediate hose layer is positioned over the first reinforcing layer. The second reinforcing layer is disposed over the first reinforcing layer. The second reinforcing layer has a braid pattern formed in one of a 3-over, 3-under pattern or a 2-over, 2-under braid pattern. The outer hose layer is positioned over the second reinforcing layer.
    Type: Grant
    Filed: December 27, 2006
    Date of Patent: November 10, 2009
    Assignee: Veyance Technologies, Inc.
    Inventors: Brian Henry, John Donald Wendt
  • Publication number: 20090133769
    Abstract: A hose includes at least an inner-layer tubular member, an intermediate layer, and an outer-layer tubular member. Both the inner-layer tubular member and the outer-layer tubular member are made of plastics. The intermediate layer is formed by wrapping a net. An outer surface of the intermediate layer is provided with a helical structure made of plastics and the outer-layer tubular member encloses the helical structure. The helical structure has a mechanical strength greater than the outer-layer tubular member. Since both the helical structure and the outer-layer tubular member are similarly made of plastics, the bonding strength therebetween can be enhanced. When the hose is subjected to bending, the helical structure helps to prevent the hose from being compressed and deformed, thereby maintaining the inside diameter of the hose to ensure smooth flow of liquid or gas through the hose.
    Type: Application
    Filed: November 20, 2008
    Publication date: May 28, 2009
    Applicant: Ames True Temper, Inc.
    Inventors: William Myles Riley, Stephen Hatcher, Edgar B. Montague, Cheng Fu, Karen Richwine
  • Patent number: 7370676
    Abstract: A sleeve f or repairing a fluid pipe (12), including a rigid or flexible shell (22) which forms a mold that surrounds at least one defective area (10) of the pipe. A liquid-state polymerizable material is injected into the mold, which polymerizes and seals the defective area. The sleeve also includes an insert which is made up of several coils of a filiform element (14), which is wound into a helix around the defective area of the pipe, before the polymerizable material is injected or infused.
    Type: Grant
    Filed: February 24, 2004
    Date of Patent: May 13, 2008
    Assignees: 3X Engineering, Submin Limited
    Inventors: Stanislas Boulet d'Auria, Hacen Slimani
  • Publication number: 20080072985
    Abstract: A flexible hose construction with kink, crush, and burst resistance. The hose is constructed of a tubular member and a reinforcement strip at least partially embedded in the tubular member. The reinforcement strip is wound in a helical pattern encircling a central lumen of the tubular body. The material forming the reinforcement strip has a greater initial modulus than the material forming the tubular member.
    Type: Application
    Filed: September 25, 2006
    Publication date: March 27, 2008
    Applicant: THE GOODYEAR TIRE & RUBBER COMPANY
    Inventors: Thomas George Burrowes, David Joseph Maguire, Douglas Michael Gilg, Jenny Zhaoxia Yu
  • Publication number: 20080072986
    Abstract: A flexible hose construction with kink, crush, and burst resistance. The hose is constructed of a tubular member and a reinforcement strip at least partially embedded in the tubular member. The reinforcement strip is wound in a helical pattern encircling a central lumen of the tubular body. The material forming the reinforcement strip has a greater initial modulus than the material forming the tubular member.
    Type: Application
    Filed: December 5, 2006
    Publication date: March 27, 2008
    Inventors: Thomas George Burrowes, David Joseph Maguire, Douglas Michael Gilg, Jenny Zhaoxia Yu
  • Publication number: 20080035229
    Abstract: A method of manufacturing a wire-reinforced flexible rubber hose that is particularly suitable for use in breathing air applications. The method includes positioning a section of wire-reinforced tubing on a forming mandrel and then positioning a sleeve of uncured rubber to cover the section of wire-reinforced tubing. Cording is then wrapped around the sleeve of uncured rubber such that each adjacent wrapping of cording is disposed between and separated by the wire helix of the wire-reinforced tubing. The sleeve of uncured rubber is cured while the cording is wrapped thereon to form a cured hose.
    Type: Application
    Filed: August 8, 2006
    Publication date: February 14, 2008
    Applicant: Crushproof Tubing Co.
    Inventors: Vance M. Kramer, J. Todd Grayson
  • Patent number: 7308911
    Abstract: A hose is provided having at least one layer defining a tubular body with a length and an electrically conductive lead joined to the tubular body and extending along the length of the tubular body. The electrically conductive lead is adapted to receive an electrical signal and create an electromagnetic field that can be remotely detected to determine a location of the hose. A method of determining the location of a hose is also contemplated.
    Type: Grant
    Filed: August 25, 2005
    Date of Patent: December 18, 2007
    Assignee: Kuriyama of American, Inc.
    Inventor: Daniel M. Wilkinson
  • Patent number: 7243686
    Abstract: A hose (10) comprising a tubular body (12) of flexible material arranged between an inner and an outer helically wound wire (22, 24). The hose (10) further comprises an axial strengthening means (20) adapted to reduce deformation of the tubular body (12) when the tubular body (12) is subjected to axial tension, the axial strengthening means (20) being adapted to exert a radially inward force on at least part of the tubular body (12) when axial strengthening means (20) is subjected to axial tension.
    Type: Grant
    Filed: June 12, 2001
    Date of Patent: July 17, 2007
    Inventors: Raymond N. Burke, Eric J. Davis, Gerard A. Hall, Matthew V. Ridolfi, Simon P. A. Thorp, Joel A. Witz
  • Patent number: 7216675
    Abstract: A tubing includes an inner liner composed of one or more fluoropolymers, the inner liner being corrugated to define a trough, and having a wire disposed in said trough. The tubing further includes an outer layer, permanently secured to an exterior of the inner liner and covering said wire.
    Type: Grant
    Filed: December 27, 2004
    Date of Patent: May 15, 2007
    Assignee: Crane Resistoflex
    Inventors: Jack L. Wisdom, Scott M. Roberts
  • Patent number: 7166177
    Abstract: Methods for forming double containment pipeline sections are provided where granular material is used to define the annuluses of such pipeline sections.
    Type: Grant
    Filed: August 21, 2003
    Date of Patent: January 23, 2007
    Assignee: Ameron International Corporation
    Inventors: Ralph S. Friedrich, Joie L. Folkers, Brian M. Francis
  • Patent number: 7055551
    Abstract: A flexible pipe and a method of manufacturing same according to which the pipe is formed by multiple layers of different materials and suitable for use in subsea and land-based applications.
    Type: Grant
    Filed: June 10, 2002
    Date of Patent: June 6, 2006
    Assignee: Wellstream International Limited
    Inventors: Dana Fraser, Robert G. Hoefling, Mark D. Kalman, Alan I. McCone
  • Patent number: 6701968
    Abstract: A flexible hose comprising (A) a soft hose main body formed of polyvinyl chloride resin; and (B) a helical rigid reinforcing means embedded in the soft hose main body formed of polyvinyl chloride resin wherein the specific gravity of the helical rigid reinforcing means is less than the specific gravity of the hose main body and the overall specific gravity of the flexible hose is less than 1.0 g/cm3.
    Type: Grant
    Filed: July 9, 2002
    Date of Patent: March 9, 2004
    Assignee: The Goodyear Tire & Rubber Company
    Inventor: Mauricio Bolonhezi
  • Publication number: 20040025953
    Abstract: A flexible pipe and a method of manufacturing same according to which a tubular sheath is provided that defines a longitudinal passage for receiving a conveyed fluid, a tape is formed by a plurality of metal fibers supported by a strip of flexible material to form a tape, and the tape is wound around the sheath.
    Type: Application
    Filed: August 12, 2002
    Publication date: February 12, 2004
    Applicant: Wellstream, Inc.
    Inventors: Dana J. Fraser, Colin Soens
  • Publication number: 20030094207
    Abstract: A leak-free flexible conduit and method of making the same is described. By attaching a flexible outer hose to a flexible inner hose without directly clamping the outer hose to the inner hose, the life of the inner hose is increased. Furthermore, the outer flexible hose creates a heat-resistant, airtight seal that prevents exhaust leaks from the inner flexible hose from escaping, substantially reduces the heat lost to the atmosphere, decreases the amount of vibration, reduces noise, and protects the inner flexible hose from corrosive elements and contaminants, thereby also extending the life of the inner flexible hose.
    Type: Application
    Filed: November 20, 2002
    Publication date: May 22, 2003
    Inventors: Abe Qutub, Mike Williams
  • Patent number: 6561229
    Abstract: A self-grounding laminated dual wall fume duct for transporting corrosive vapors and gases, and a process for fabricating the inner and outer walls. The innermost layer of the inner wall is made of a cured epoxy vinyl ester resin incorporating continuous carbon fibers forming a continuous surface integrated with the inner surface of the innermost layer. The electrically conductive fibers act to dissipate and neutralize electrostatic charges generated by triboelectric processes.
    Type: Grant
    Filed: June 18, 2001
    Date of Patent: May 13, 2003
    Inventors: Raymond L. Wellman, Michael S. Cork
  • Patent number: 6425419
    Abstract: Composite flexible air ducting comprising an elongated inner lining of plastic reinforced by a spirally wound coil member providing an elongated continuous air passage; a layer of natural fiber insulation surrounding the inner lining and an outer sheath surrounding the layer of natural fiber insulation. The outer sheath and the layer of fiber insulation are bonded to each other by a layer of adhesive having substantial thermal insulating properties.
    Type: Grant
    Filed: August 22, 2001
    Date of Patent: July 30, 2002
    Inventor: Sharon L. Attra
  • Patent number: 6324833
    Abstract: A composite tubular article such as a nozzle or a polar boss for a rocket motor wherein straight matrix impregnated yarn portions extend from one end portion to the other in a non-cylindrical ply to achieve increased strength while affording lighter weight. The matrix material may be at least partially curable by actinic radiation to anchor the yarn portions in position as they are applied on a mandrel so that radial rods or the like for anchoring the yarn may be eliminated. For high performance rocket motor nozzle components and the like, the yarn portions may be straight or non-straight and applied by braiding or the like, and the matrix material may be decomposed to a char adequate to anchor the yarn portions and subjected to one or more densification cycles whereby the matrix material may be carbonized.
    Type: Grant
    Filed: April 24, 1990
    Date of Patent: December 4, 2001
    Assignee: Cordant Technologies, Inc.
    Inventors: Victor Singer, Frederick W. VanName, James A. Hartwell
  • Patent number: 6286555
    Abstract: The invention relates to a roll-back tube construction, preferably for use with a flexible endoscope shaft, with a silicone roll-back tube consisting of an inner tube section which at least at one turn-back area is turned back to form an outer tube section and is provided with a reinforcement. The reinforcement preferably consists of a nylon filament winding with a pitch of 0.2 to 2 mm about a silicone tube, which reinforcement is in turn surrounded by a silicone covering. The roll-back tube construction is designed in accordance with the type of tube which can be rolled back at both ends, where front and rear outer tube sections are connected at one end by a tube-guiding sleeve arranged between them, through which an inner tube section extends. The tube-guiding sleeve is used for mounting a roll-back tube drive.
    Type: Grant
    Filed: June 11, 1998
    Date of Patent: September 11, 2001
    Assignee: STM Medizintechnik Starnberg GmbH
    Inventors: Robert Pauker, Thomas Viebach, Fritz Pauker, Gerhard Weiglhofer
  • Patent number: 6254948
    Abstract: A tubular body made of elastomeric material and/or plastics, in particular the bellows of a pneumatic cushioning system, consists of a outer layer, an inner layer, and an embedded reinforcement layer, shaped in particular as axial reinforcing threads. The tubular body is provided with an embedded slit protection and is in particular characterized by the following layers, from the outermost inwards: outer layer, adhesive layer, reinforcement, adhesive layer, slit protection, adhesive layer, and innermost layer.
    Type: Grant
    Filed: March 2, 1999
    Date of Patent: July 3, 2001
    Assignee: Phoenix Aktiengesellschaft
    Inventor: Winfried Hellmig
  • Patent number: 6250339
    Abstract: There is provided a sound-absorbing and a heat-insulating duct comprising a nonwoven cloth layer 1, a reinforcing core 2, a foam strip layer 3, a bonding resin 4 and resin-coating layer 5. The nonwoven cloth layer 1 is formed by wound spirally a nonwoven cloth 10 into a tube-like shape in which adjacent side edges of the adjacent nonwoven cloths 10 are brought in abutment against or lapped with each other so as to form a bonding portion 1a. The reinforcing core 2 made of hard synthetic resin material is wound spirally on the bonding portion 1a while a surface of the reinforcing core 2 being brought into contact with the nonwoven cloth 10 is welded or bonded to the nonwoven cloth 10. The foam strip layer 3 is formed by wound spirally a foam resin strip 30 having a width approximately equal to a width of the nonwoven cloth 10. Both adjacent edges 3a, 3b of the foam resin strip are disposed on adjacent reinforcing cores 2, 2 respectively.
    Type: Grant
    Filed: January 28, 2000
    Date of Patent: June 26, 2001
    Assignee: Totaku Industries, Inc.
    Inventors: Hiroshi Ikegami, Susumu Okairi
  • Patent number: 6244303
    Abstract: A flexible hose 10 having a flexible material 12 and a more rigid material 14. The flexible material 12 and the more rigid material 14 being helically wound and molded together to form a hose 10 with an exterior surface 16 and an interior surface 18. The cross-section of the more rigid material 14 having at least two peninsulas 20, extending in longitudinally opposite directions, at least one radially inwardly extending peninsula 22, and at least one radially outwardly extending peninsula 22. The longitudinally extending peninsulas 20 are embedded in the flexible material 12 and the radially extending peninsulas 22, 24 are at least partially embedded in the flexible material 12. In the preferred embodiment, the longitudinally extending peninsulas 20 are centrally located in the flexible material 12 between the respective surfaces 16, 18 of the hose 10 and the radially outwardly extending peninsula 24 extends beyond the flexible material 12 on the exterior surface 16 of the hose 10.
    Type: Grant
    Filed: January 21, 2000
    Date of Patent: June 12, 2001
    Assignee: The Goodyear Tire & Rubber Company
    Inventor: Anthony Dennis Adams
  • Patent number: 6240160
    Abstract: A system for inspecting pipelines, especially in the coupling between pipe parts, comprises a radiation source and a detector device or a photographic film. The pipeline includes indicators which are laid into the pipeline material and have a differing absorption of radiation than the material comprising the layers of the pipeline in which the indicators are formed. By placing the radiation source and the detector device (or photographic film) on opposite sides of the pipeline, or on opposite sides of a wall of the pipeline, the position of the indicators may be detected, and any displacement can be measured.
    Type: Grant
    Filed: June 14, 1999
    Date of Patent: May 29, 2001
    Assignee: Den Norske Stats Oljeselskap A.S.
    Inventors: Alf Daaland, Svein Åge Holen
  • Patent number: 6227249
    Abstract: The abrasion resistant hose of the present invention comprises an inner layer mainly formed with a thermoplastic polyurethane resin, an outer protective layer comprising a soft vinyl chloride resin united with the inner layer by thermal-fusion, and a spiral reinforcement comprising a hard synthetic resin buried in or attached to the outer protective layer. The inner layer is formed with a thermoplastic polyurethane resin containing substantially no migratory plasticizer or an internally-plasticized thermoplastic polyurethane resin (i.e., a thermoplastic polyurethane resin which is not externally-plasticized with a migratory plasticizer). The outer protective layer is formed with a soft vinyl chloride resin containing substantially no migratory plasticizer, united with the inner layer by fusion. An intermediate layer comprising a soft vinyl chloride resin containing no migratory plasticizer may be interposed between the inner layer and the outer protective layer.
    Type: Grant
    Filed: December 21, 1999
    Date of Patent: May 8, 2001
    Assignee: Tigers Polymer Corporation
    Inventors: Youichi Akedo, Tetsuya Inagake, Hitoya Kodama, Shoji Hattori, Yoshiki Yoshitomi, Masataka Morikawa
  • Patent number: 6179009
    Abstract: There is provided a heat-insulating and noise reducing duct constituted by reinforcing core 1, a thick felt layer 2, a foamed resin strip layer 3 and a resin-coating layer 4. The reinforcing core 1 is made of hard polyolefin resin material and wound spirally at predetermined intervals. The thick felt layer 2 is wound spirally on an outer circumferential surface of the reinforcing core so that adjacent side edge portions of the felt layer 2 are lapped over or brought into contact with each other, while the shape of the felt layer is retained by the reinforcing core 1. The foamed resin strip layer 3 made of polyolefin resin material and wound spirally on an outer circumferential surface of the felt layer 2 so that adjacent side edge portions of the foamed resin strip layer 3 are in abutment against or in tight contact with each other. The resin-coating layer 4 provided to cover an outer circumferential surface of the foamed resin strip layer 3.
    Type: Grant
    Filed: September 16, 1999
    Date of Patent: January 30, 2001
    Assignee: Totaku Industries, Inc.
    Inventor: Kouki Fukui
  • Patent number: 6158477
    Abstract: A flexible duct and method for making the duct are disclosed. The duct includes an inner wall bonded to an outer wall, with a wire resilient helix and a scrim sandwiched therebetween. The scrim is in the form of a helical tape embedded between the outer wall and the inner wall, and preferably consists of a bonded yarn constructed in a layered or interwoven square or other uninterrupted geometrical pattern. The presence of the scrim provides the duct with high tensile strength and excellent tear resistance in all directions, especially in the helical direction. The method of manufacturing the duct includes the steps of helically forming the wire and scrim about the inner wall and bonding the outer wall to the inner wall to as to sandwich the helix and the scrim between the inner and outer walls.
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: December 12, 2000
    Assignee: Flexible Technologies, Inc.
    Inventor: Michael J. Waters
  • Patent number: 6024134
    Abstract: A laminated tape comprising a main layer of a polyester-series thermoplastic polyurethane resin and a covering layer formed of a soft vinyl chloride resin fused with at least one surface of the main layer is spirally wound, and its adjacent side edges are bonded each other to form a hose wall. The shrinkage ratio of the length of the hose in an unloaded condition is 25% or less relative to the original length of the hose as determined by measuring the original length and the length of the hose after the test which comprises subjecting the hose compressed in a longitudinal direction to ten heating/cooling-cycles successively, one cycle comprising a heating step for exposing the compressed hose to an atmosphere of 70.degree. C. for two hours and a cooling step for cooling the heat-treated hose at an atmosphere of -20.degree. C. for two hours, followed by returning the temperature of the hose to an ordinary or room temperature and allowing the hose to stand for one hour.
    Type: Grant
    Filed: August 26, 1998
    Date of Patent: February 15, 2000
    Assignee: Tigers Polymer Corporation
    Inventors: Youichi Akedo, Seiji Shiga, Tetsuya Inagake, Shoji Hattori, Yoshiki Yoshitomi, Hitoya Kodama, Masataka Morikawa
  • Patent number: 6017335
    Abstract: A process for making a reinforced tubular product, especially a catheter, in a single extrusion step. A reinforcing member is applied to an extruded thermoplastic catheter body of about its finished size which is softened by heating while tensioning the reinforcing member to control the surface deformation or penetration of the catheter wall by the reinforcing member to produce an irregular surface contour on the catheter body. The catheter body is then smoothed in a sizing die burying the reinforcement to form the finished product. The heating step may be in addition to or substituted by a curing step when a thermosetting or cross-linking material is used for the body. The reinforcement may be braid, or a helical wrap of one or more members applied at one or more controlled angles relative to the axis of the catheter to control the apparent stiffness and torque transmission efficiency of the catheter.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: January 25, 2000
    Inventor: Warren R. Burnham
  • Patent number: 5918642
    Abstract: A flexible synthetic resin tube is provided by uniting an inner layer of a polyether-series thermoplastic polyurethane resin with a hard synthetic resin spiral reinforcement (e.g. a hard vinyl chloride resin) or a soft synthetic resin outer layer (e.g. a soft vinyl chloride resin), through an interposed adhesive intermediate resin layer. The polyurethane resin includes a resin having a diol composed of a tetramethylenoxy unit as a polyol component. The spiral reinforcement may be buried in the outer layer. The intermediate resin layer may comprise a mixture of the polyether-series thermoplastic polyurethane resin, and the synthetic resin for the spiral reinforcement or the outer layer. This tube imparts an enhanced hydrolysis-resistant property to the polyurethane resin forming the inner layer, and an improved adhesive strength between the inner layer and the spiral reinforcement or the outer layer.
    Type: Grant
    Filed: November 20, 1997
    Date of Patent: July 6, 1999
    Assignee: Tigers Polymer Corporation
    Inventors: Youichi Akedo, Seiji Shiga, Tetsuya Inagake, Hitoya Kodama, Shoji Hattori, Yoshiki Yoshitomi
  • Patent number: 5918641
    Abstract: The present invention relates to a flexible tubular conduit with a jacket or tube made of crosslinked polyolefin, especially crosslinked polyethylene. The jacket or tube is made from polyolefin crosslinked by hydrolysis.
    Type: Grant
    Filed: May 22, 1997
    Date of Patent: July 6, 1999
    Inventors: Jean Hardy, Michel Morand