With Intermediate Insulation Layer Patents (Class 138/149)
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Patent number: 7481248Abstract: A heat shield comprises a flexible inner jacket configured and disposed to be fitted around at least a portion of a component, and a flexible outer jacket configured and disposed to be fitted around the inner jacket.Type: GrantFiled: September 15, 2004Date of Patent: January 27, 2009Assignee: Pratt & Whitney Canada Corp.Inventors: Lev Alexander Prociw, Harris Shafique, Alexsandar Kojovic
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Patent number: 7476427Abstract: An insulation product is provided comprising a sheet of randomly oriented fibers bonded by a binder. The sheet has first and second major surfaces and a pair of side portions. A facing layer is bonded to at least one of the major surfaces. A region of the sheet proximate to the facing layer is more puncture resistant than a remainder of the sheet.Type: GrantFiled: March 11, 2004Date of Patent: January 13, 2009Assignee: Certainteed CorporationInventors: John O. Ruid, Ronald Moulder
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Patent number: 7472725Abstract: A heat-insulated conduit having at least one internal tube (1), a heat-insulating layer (2), an intermediate layer (3), a film (4) and a corrugated external tube (5).Type: GrantFiled: June 13, 2007Date of Patent: January 6, 2009Assignee: Brugg Rohr AG, HoldingInventors: Roberto Rudi, Robert Schneider, Roland Demuth
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Patent number: 7462307Abstract: Process for producing single layer and multilayer polyolefin foam pipes with improved compression resistance having a polyolefin foam layer which consists of mixtures of modified propylene polymers having strain hardening behaviour or propylene homopolymers with a stereospecificity index >98% or propylene copolymers with a stereospecificity index of the homopolymer matrix of >96%. The polyolefin foam pipes include coated steel pipes for transporting crude oil or gas products or district heating applications, single layer pipes for insulation purposes and for non- or low-pressure applications and multilayer plastic pipes for the transportation of hot or cold fluids.Type: GrantFiled: January 10, 2006Date of Patent: December 9, 2008Assignee: Borealis GmbHInventors: Achim Hesse, Tony Lindstroem, Carl-Gustaf Ek, Cecilia Rydin, Allan Boye Hansen
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Patent number: 7445031Abstract: An insulation arrangement for pipes, especially for pipes of a pneumatic system in a passenger transport aircraft, essentially includes at least one insulation layer (6) as well as an outer sheath (3) consisting of titanium foil (31). The outer sheath (3) is connected, in a first end section (32) and in a second end section (33), respectively with a termination profile (7), and thereby a shell (9) with at least one longitudinal seam (13) is formed, into which the insulation layer (6) is insertable.Type: GrantFiled: March 19, 2004Date of Patent: November 4, 2008Assignee: Airbus Deutschland GmbHInventors: Gerhard Hummel, Horst-Dieter Rohwedder
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Patent number: 7444805Abstract: The present invention relates to an exhaust system conduit, including a generally cylindrical outer portion and a generally cylindrical inner portion disposed within the generally cylindrical outer portion and defining a generally cylindrical fluid-flow path. The generally cylindrical inner portion further includes a substantially fibrous porous nonwoven refractory monolith and a catalyst material at least partially coating the monolith.Type: GrantFiled: December 30, 2005Date of Patent: November 4, 2008Assignee: GEO2 Technologies, Inc.Inventors: Bilal Zuberi, Robert G. Lachenauer
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Publication number: 20080265564Abstract: Insulated piping and methods of making and using insulated piping are disclosed herein. An insulated pipe according to one embodiment includes a plurality of elongate pipe sections. Each pipe section includes first and second ends, an inner pipe for transporting temperature sensitive fluids, an intermediate pipe extending around the inner pipe, and an outer pipe extending around the inner pipe and the intermediate pipe. The inner pipe is operatively coupled to the outer pipe to form an airtight insulation space between the inner and outer pipes, and the intermediate pipe segregates the airtight insulation space into a plurality of independent insulation spaces between the inner and outer pipes. At least one independent insulation space is radially inward of another independent insulation space.Type: ApplicationFiled: April 24, 2008Publication date: October 30, 2008Inventor: Rod Thomas
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Patent number: 7441602Abstract: A method of controlling the heat transfer properties of a sub-sea conduit having inner and outer walls (800, 802) and a gas-permeable space (804) between the walls providing thermal insulation, the method comprising varying the pressure of a gas within the space between values above and below a critical pressure range at which thermal conductivity of the gas exhibits a high rate of change.Type: GrantFiled: May 28, 2003Date of Patent: October 28, 2008Assignee: Acergy France S.A.Inventor: Jean-Francois Saint-Marcoux
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Publication number: 20080236697Abstract: A flexible heat-insulated conduit is described, made up of at least one medium-carrying internal tube, an external tube surrounding the at least one internal tube, and a heat-insulating layer based on polyurethane foam or polyisocyanurate foam and located between the at least one internal tube and the external tube, in which 0.1 to 7.5% by weight of hollow spheres are added into the foam, the hollow spheres comprising a casing made of a thermoplastic and being filled with a medium that brings about an inflation of the casing at an elevated temperature.Type: ApplicationFiled: March 26, 2008Publication date: October 2, 2008Inventors: Roberto Rudi, Christian Dambowy
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Patent number: 7418979Abstract: The present invention relates generally to an apparatus and method for preventing disbondment in an insulated piping system that is used for conveying high temperature fluids. More specifically, an external slip wrap is shown, capable of surrounding the outer protective jacket of the insulated piping system at a location along the piping before an elbow shaped or angular change in direction. The slip wrap comprises a loosely received outer sleeve which surrounds the outer protective jacket of the piping without being bonded thereto, thereby allowing the insulated and jacketed pipe to move axially relative to the slip wrap for a selected distance once the pipe is buried in the ground.Type: GrantFiled: January 19, 2007Date of Patent: September 2, 2008Assignee: Thermacor Process, L.P.Inventor: Thomas Joseph Keyes
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Publication number: 20080185064Abstract: A preconditioned air hose includes an abrasion-resistant external layer made of robust nylon, an insulating layer, and an inner layer. The robust external layer protects the air hose from wear and degradation due to abrasion. The external layer may be made of a fabric with an abrasion resistance of at least 22,000 cycles to failure as measured using the ASTM D 3884 standard. This external layer fabric may be composed of filaments having a linear density of about 1,000 denier. The external layer fabric may weigh about 10.8 ounces per square yard.Type: ApplicationFiled: February 1, 2007Publication date: August 7, 2008Inventors: Scott Takayuki Kolzumi, Brian Michael Piety, William Taylor O'Connor
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Publication number: 20080173367Abstract: The present invention relates generally to an apparatus and method for preventing disbondment in an insulated piping system that is used for conveying high temperature fluids. More specifically, an external slip wrap is shown, capable of surrounding the outer protective jacket of the insulated piping system at a location along the piping before an elbow shaped or angular change in direction. The slip wrap comprises a loosely received outer sleeve which surrounds the outer protective jacket of the piping without being bonded thereto, thereby allowing the insulated and jacketed pipe to move axially relative to the slip wrap for a selected distance once the pipe is buried in the ground.Type: ApplicationFiled: January 19, 2007Publication date: July 24, 2008Inventor: Thomas Joseph Keyes
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Publication number: 20080169037Abstract: An improved system is provided for connecting thermally insulated cryogenic delivery piping including a bayonet coupler comprising a thermally insulated section of dual walled piping, said dual walled piping having an annular space between the walls of said piping, the annular space maintained at high vacuum, said bayonet coupler sized to be securely received by internal sleeves disposed at the to-be-joined ends of said cryogenic delivery piping.Type: ApplicationFiled: January 17, 2007Publication date: July 17, 2008Inventor: Alan T. Ziegler
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Publication number: 20080169038Abstract: A wrappable heat shield for an exhaust pipe and methods of construction and installation thereor includes an outer layer of metal having opposite inner and outer faces extending between opposite sides. An inner layer of non-woven insulation is attached to the the outer layer by a crimped portion extending along one of the opposite sides of the outer layer. The inner layer has a width sufficient to extend completely about a circumference of the exhaust pipe and is arranged in continuous contact with the exhaust pipe about its circumference while the outer layer remains spaced therefrom.Type: ApplicationFiled: January 10, 2008Publication date: July 17, 2008Inventors: Timothy David Sellis, John Emerson Burdy, Zhong Huai Zhang, Linwood Ludy, William T. Rubel
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Publication number: 20080149208Abstract: In one example, a piping system 20 is built around a wire (elongated flexible member) 25. An inlet pipe 21 and an outlet pipe 22 are fixed to both sides of the wire 25 parallel to each other via a plurality of pipe holders 26. Further, insulator holders 27 are attached to the wire 25 and heat insulating sections 28 are attached to the insulator holders 27. A cylindrical gap 51 is formed between the inlet pipe 21 and the inner surface of each of the heat insulating section 28.Type: ApplicationFiled: December 26, 2007Publication date: June 26, 2008Inventors: Hironobu Kurara, Taihei Nishikawa, Masataka Nakanishi
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Publication number: 20080145580Abstract: A recycled insulation material includes plastic and/or rubber shredded or chopped up into individual pieces having random or semi-random sizes and lengths that when combined together create random or semi-random air-pockets in-between many of the individual pieces. The shredded or chopped up plastic and/or rubber pieces in combination with the air-pockets are configured to operate as an insulation filler for a variety of different panels, forms, pipes, conduits or any other item that requires insulation.Type: ApplicationFiled: November 6, 2007Publication date: June 19, 2008Applicant: Insulastics Inc.Inventors: William Templeton McAllister, William Gale Vinton
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Publication number: 20080128043Abstract: An insulated length of pipe includes a length of pipe and a flexible insulating material coating lengthwise surrounding the length of pipe. The flexible insulating coating comprises syntactic foam and a length conformable tape including a relatively narrow elastomeric extrusion spirally wrapped around the length of pipe and embedded within the syntactic foam where the elastomeric extrusion comprises a gelatinous filler. The majority of the insulating coating includes syntactic foam whose flexibility is increased by relatively narrow conformable tape wound spirally (e.g., helically) around the pipe.Type: ApplicationFiled: January 22, 2007Publication date: June 5, 2008Inventor: Lou Watkins
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Patent number: 7381454Abstract: A tubular product has a tubular base layer, a tubular innermost layer made of plastic by continuous extrusion, and a tubular tie layer of foamed plastic between and adhered to the base layer and the innermost layer. The tie layer is made of melt processable adhesion plastic, is extruded simultaneously with the innermost layer against the base layer, and has better adhesions to the base and innermost layers than the base and innermost layers have to each other.Type: GrantFiled: December 18, 1997Date of Patent: June 3, 2008Assignee: Uponor B.V.Inventors: Kari Kirjavainen, Jyri Järvenkylä
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Publication number: 20080121304Abstract: The present invention relates to a method of thermally insulating the annular space (4) in an element (1) of an assembly of two coaxial pipes (2, 3), the space being filled with a porous thermally insulating material (5), in which method the following steps are performed: a) said pipe element (1) is inclined, preferably at an angle ? of 5° to 30°, said annular space being closed at each end by respective closure pieces (13a, 13b); and b) substantially all of said annular space (4) is filled with said insulating material (5) in the form of particles in bulk; and c) preferably said particles of insulating material are shaken, at least intermittently, as the annular space is filled in order to compact said insulating material.Type: ApplicationFiled: December 7, 2005Publication date: May 29, 2008Applicant: Saipem S.A.Inventors: Boris Carlier, Benoit Landreau
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Patent number: 7360799Abstract: A half elbow used with a second similar half elbow clads insulation or other structures about a bend. Each half elbow is formed of separate segments of thin sheet material fastened together. Each segment includes first and second edges adapted to be fastened to corresponding second and first edges of adjacent segments. The segments are fastened together and shaped so that they form a curving contour between outside edges and inside edges of the segments. The outside edges of the segments together form an outside seam and the inside edges of the segments together form an inside seam. Two outside seams of two half elbows can be joined together along with two inside seams of the two half elbows to entirely surround and cover a bend.Type: GrantFiled: August 17, 2004Date of Patent: April 22, 2008Inventor: Todd C. Price
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Publication number: 20080029178Abstract: A hose assembly includes a tubular inner core, a high-temperature thermal insulator disposed about the inner core and in substantially continuous contact therewith, a sealing layer substantially surrounding the thermal insulator, and an outer reinforcing layer. The insulator may be a refractory paper tape braided or helically wrapped about the inner core, and may be multiple layers thick. The sealing layer, which may be a polymeric fluorocarbon tape, substantially surrounds the thermal insulator and protects the thermal insulator from chemical degradation. The outer reinforcing and sealing layer may be integrated. Alternatively, the outer reinforcing layer may be applied about the sealing layer, for example via braiding. A coupling may be attached at one end of the hose assembly to connect the hose assembly to a fluid system.Type: ApplicationFiled: August 1, 2006Publication date: February 7, 2008Inventor: Rob Bentley
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Patent number: 7322380Abstract: A pipe insulation coupling for coupling adjacent facing ends of elongated cylindrical pipe insulation tubing encased around a fluid pipe includes an elongated body extending longitudinally between a first end and a second end. The elongated body includes a pair of C-shaped clam shell portion interconnected by a living hinge for pivotal movement between an open position for receiving the pipe and a closed position clamped around the pipe and insulation tubing. Each clam shell portion includes an outer tube wall and an inner tube extending longitudinally between the first and second ends and defining a channel therebetween for receiving the adjacent facing ends of the insulation tubing. A planar wall interconnects the outer tube wall and the inner tube wall midway between the ends to abut the adjacent ends of the insulation tubing.Type: GrantFiled: August 24, 2001Date of Patent: January 29, 2008Assignee: Klo-Shure, Inc.Inventor: Orval A. Opperthauser
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Publication number: 20070289654Abstract: A heat-insulated conduit having at least one internal tube (1), a heat-insulating layer (2), an intermediate layer (3), a film (4) and a corrugated external tube (5).Type: ApplicationFiled: June 13, 2007Publication date: December 20, 2007Inventors: Roberto Rudi, Robert Schneider, Roland Demuth
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Patent number: 7308803Abstract: Provided is an assembly for insulating substantially vertical runs of cooled surfaces that are continuously or periodically exposed to air or another gas that has a dewpoint temperature above that of the cooled surface, thereby resulting in condensation water vapor on or adjacent the cooled surface. One embodiment of the insulating assembly provides a wicking material layer adjacent the cooled surface that, in combination with transporting and evaporating structures, removes the condensate from the vicinity of the cooled surface and allows for its evaporation into the ambient gas surrounding the exterior surface of the insulating assembly. Another embodiment provides for exposing the condensate to an internal conditioned gas stream to provide for evaporation that does not necessarily utilize an exterior surface. Both embodiments remove condensate from the insulating structure and thereby tend to avoid any substantial condensate accumulation and maintain the insulating performance.Type: GrantFiled: November 8, 2004Date of Patent: December 18, 2007Assignee: Owens Corning Intellectual Capital, LLCInventors: Matthew C. Brokaw, David D. Hokens, Patrick Aubourg
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Publication number: 20070181204Abstract: An insulated duct. The duct includes a concentric arrangement of a flowpath-defining inner wall and an outer wall, with insulation disposed in the annular region between the walls. A portion of the axial length of the annular region away from the end of the duct is filled with lower-density insulation, while another portion adjacent the duct end is filled with higher-density insulation than that of the portion away from the duct end. The higher-density insulation helps keep the concentric walls in their as-manufactured relative spacing and shape. Flanges may be attached to one or both of the walls at the ends of the duct to facilitate joining of adjacent duct segments.Type: ApplicationFiled: February 6, 2007Publication date: August 9, 2007Inventor: William K. Stout
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Patent number: 7223455Abstract: A duct board or duct liner comprises: an insulating layer formed from fibrous material bound with a resin binder, an outer facing layer adhered to an outer surface of the insulating layer, and a water repellant mat facing adhered to an interior surface of the insulating layer opposite the outer surface to form a duct board material. The mat facing provides sufficient water repellency to repel a mixture of about 40% isopropanol and about 60% water. The duct board or duct liner material may be formed into a tubular shape capable of conducting air, with the mat facing on the interior of the tubular shape.Type: GrantFiled: January 14, 2003Date of Patent: May 29, 2007Assignee: CertainTeed CorporationInventors: John O. Ruid, Murray Toas, Wayne E. Shaw
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Patent number: 7222645Abstract: An insulated duct-wrap insulating product for an air duct that incorporates a wicking media to transport condensed water on the duct surface to be evaporated into the atmosphere. A wicking fabric, or fibrous media, incorporated as part of the insulating duct wrap is in contact with the metal air duct surface. A portion of the wicking fabric extends into the interior of the air duct, typically through joints in the duct system. When water vapor condenses on the air duct surface it is transported by the wicking fabric and evaporated from the wick surface within the air stream being transported by the ducting system.Type: GrantFiled: October 31, 2003Date of Patent: May 29, 2007Assignee: Owens Corning Fiberglas Technology, Inc.Inventors: Roy Shaffer, Manoj K. Choudhary, Steven F Geiger, Charles W. Crim, Jr.
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Patent number: 7220470Abstract: Water-resistant fibrous air duct insulation products and methods for making such products. The products may include a duct board or a duct tube including a first layer of resin-bonded fibrous mat having a second layer of durable, preferably non-woven, facing material adhered thereto, wherein the facing material defines the air stream surface for the board or tube. The duct board or tube is preferably rendered water-repellent at the air stream surface by incorporating a hydrophobic agent into the adhesive used to adhere the second layer to the first layer.Type: GrantFiled: February 20, 2001Date of Patent: May 22, 2007Assignee: CertainTeed CorporationInventors: Murray S. Toas, John O. Ruid
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Patent number: 7168452Abstract: A covering body for heating a pipe to be attached to the pipe and to conduct external heat to heat the pipe, including: a surrounding body including at least two parts having a divided shape of a cylindrical body along an axial line of the cylindrical body, the surrounding body having: a through hole having a diameter corresponding to an outer diameter of the pipe; and a concave groove provided on an outer peripheral surface of at least one of the at least two parts and extending in a longitudinal direction of the surrounding body, a fitting member including: a first fitting plate including a first arc band-shaped plate longer than a half of circumference of an outer peripheral surface of the surrounding body and having a first extended portion and a first cutout at one end of the first arc band-shaped plate; a second fitting plate including a second arc band-shaped plate longer than the half of circumference of the outer peripheral surface of the surrounding body and having, at one end of the second arc bandType: GrantFiled: March 31, 2006Date of Patent: January 30, 2007Assignee: Nichias CorporationInventors: Akira Sasaki, Yoshiyuki Motoyoshi, Tsuyoshi Kobayashi, Mitsushi Wadasako, Kiyoshi Kumasawa
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Patent number: 7159620Abstract: A pipe blanket is provided for wrapping around and insulating a pipe. The pipe blanket comprises an insulation mat having an outer surface and an inner surface adapted to lie adjacent the pipe when the pipe blanket is wrapped around the pipe. An outer cover of the pipe blanket is coupled to the outer surface of the insulation mat. The insulation mat is configured to enclose a variety of pipes having different sized diameters. The pipe blanket further includes a closure means configured for securing the insulation mat and outer cover about the pipe. The insulation mat further includes a plurality of pleats.Type: GrantFiled: September 4, 2003Date of Patent: January 9, 2007Assignee: Knauf Insulation GmbHInventor: Ronald E. Kissell
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Patent number: 7152633Abstract: The present invention relates to a heat shield for pipes and tubes that is flexible, has an interior insulating layer, and has an exterior reflective layer. A shield may include a flap extending from the shield body for covering a portion of the component not already covered by the shield body. The interior layer faces the exhaust pipe, is made of woven silica, and may include a conductive coating. The exterior layer is an aluminum finish. The heat shield may be secured with stainless steel clamps or a lace and installed on an installed pipe or tube. The heat shield may be installed with an air gap between the pipe and the heat shield.Type: GrantFiled: September 17, 2004Date of Patent: December 26, 2006Assignee: Thermo-TecInventor: James E. White
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Patent number: 7143788Abstract: An flexible coupling is shown for an insulated piping system of the type used to convey steam and other high temperature fluids. The coupling uses a flexible bellows and additional insulating and joining components to couple conventional lengths of insulated pipe. The bellows arrangement compensates for any relative movement of the inner fluid conveying pipes with respect to the outer layers of insulating material and outer jacket in order to protect the integrity of the assembly and prevent the intrusion of water or other contaminants which could lead to corrosion or early failure of the piping system.Type: GrantFiled: September 20, 2004Date of Patent: December 5, 2006Assignee: Thermacor Process, LPInventor: Thomas Joseph Keyes
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Patent number: 7140396Abstract: Provided is an air duct suitable for conducting a flow of air. The air duct includes a central layer formed from a fiber glass. The central layer has an inner surface and an outer surface. The air duct also includes a liner layer arranged adjacent to the inner surface of the central layer. The liner layer is formed from an organic material and is substantially free of fiber glass, or is formed from polyester and rayon. The central layer and liner layer are arranged to define a channel for conducting a flow of air.Type: GrantFiled: November 27, 2002Date of Patent: November 28, 2006Assignee: Johns ManvilleInventors: Joseph E. Mota, Madhumita Molly Datta
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Patent number: 7140397Abstract: An insulated duct-wrap insulating product for an air duct that incorporates a wicking media to transport condensed water on the duct surface to be evaporated into the atmosphere. A wicking fabric, or fibrous media, incorporated as part of the insulating duct wrap is in contact with the metal air duct surface. A portion of the wicking fabric extends into the interior of the air duct, typically through joints in the duct system. When water vapor condenses on the air duct surface it is transported by the wicking fabric and evaporated from the wick surface within the air stream being transported by the ducting system.Type: GrantFiled: October 31, 2003Date of Patent: November 28, 2006Assignee: Owens Corning Fiberglas Technology, Inc.Inventors: Roy Shaffer, Charles W. Crim, Jr., Manoj K. Choudhary, Steven F. Geiger
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Patent number: 7134455Abstract: An insulating apparatus for use with vacuum insulated tubing sting to reduce heat loss through the joints, where the apparatus includes an insulator adapted to surround the joint and a latching joint protector adapted to surround the insulator and hold the insulator against the joint, where the protector also includes a channel for receiving injection and/or control tubing. The insulator is capable of reducing heat loss through the joints of a vacuum insulated tubing string by as much as 95%.Type: GrantFiled: December 22, 2003Date of Patent: November 14, 2006Inventors: Cole J. Hickman, James H. Cannon
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Patent number: 7093619Abstract: To provide a thermal insulation piping with no radially projecting part from a periphery thereof, so as to facilitate insertion of the thermal insulation piping into a pipeline or equivalent. In a thermal insulation tube 10 having a vacuum layer between an inner tube 11 and an outer tube 12, an evacuation port 30 for vacuum evacuation is oriented parallel with a longitudinal direction of the thermal insulation piping at an end of the thermal insulation tube 10. This construction can produce the thermal insulation tube 10 with no radially projecting part from a periphery thereof, thus providing improved workability when the thermal insulation piping is contained in the pipeline or equivalent. Further, a flexible pipe(s) 40 is/are preferably connected to the evacuation port(s) 30. This can allow increased positional tolerances in the connection of the evacuation port(s) to a vacuum evacuation device.Type: GrantFiled: March 24, 2003Date of Patent: August 22, 2006Assignees: Sumitomo Electric Industries, Ltd., The Tokyo Electric Power Company IncorporatedInventors: Michihiko Watanabe, Yoshihisa Takahashi, Kimiyoshi Matsuo, Shoichi Honjo, Tomoo Mimura, Terumitsu Aiba
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Patent number: 7086422Abstract: A respiratory gas hose system for supplying a respiratory gas is provided, particularly for use in the frame work of CPAP therapy. The respiratory gas hose system comprises a flexible hose line including a flexible sheathing body to surround the flexible hose line, which results in considerably improved therapy comfort.Type: GrantFiled: February 16, 2001Date of Patent: August 8, 2006Assignee: MAP Medizin-Technologie GmbHInventors: Petra Kressierer Huber, Bernd Lang, Achim Biener, Dieter Heidmann
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Patent number: 7069957Abstract: The present invention concerns a device for heat-insulating at least one sub-marine pipe. The sub-marine pipe includes a heat insulation covering including a material subject to migration, the covering surrounding the pipe and being covered by a sealed protective envelope having a tubular shape and a longitudinal axis of symmetry. The envelope being constituted by a flexible or semi-rigid material able to remain in contact with the external surface of the insulation covering when the latter warps. The device includes at least two sealed transversal partitions, each being constituted by a closed rigid piece traversed by and integral with the pipe and with the envelope.Type: GrantFiled: March 8, 2002Date of Patent: July 4, 2006Assignee: Saipem S.A.Inventors: Raymond Hallot, Xavier Rocher, Xuan Chi Nguyen
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Patent number: 7069956Abstract: A marina pipe includes a flexible conduit resistant to mechanical stresses, the conduit adapted to surround the secondarily contained flexible piping. The conduit comprises a metallic core and a thermoplastic jacket. The secondarily contained flexible piping comprises an inner supply pipe, wherein the inner pipe is comprised of a first, inner layer fabricated from nylon, a second, intermediate layer comprising a nylon reinforced wrap, and a third, outer layer comprising a polyethylene material, the nylon inner material, the nylon wrap and the polyethylene outer layer being extruded simultaneously to form the inner pipe.Type: GrantFiled: October 19, 2004Date of Patent: July 4, 2006Inventor: James W. Mosier
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Patent number: 7069955Abstract: An armoured flexible pipe consists of an inner liner (3), which surrounds a carcass (1, 2). On the other side of the inner liner (3) there are two armour layers, where the innermost (5, 6) is a pressure armour layer, while the outermost (7, 8) is a tensile armour layer. An outer sheath (9) is finally applied around the armour layers. With the object of ensuring a low transport of heat through the walls of the pipe, one or more thermally-insulating layers (10) are extruded on the outside of the inner liner, where, depending on the use of the pipe, the layers can consist, for example, of a polymer or polymeric mixture, polyolefin, such as a polypropylene, or a polyketon. The flexible pipe according to the invention is especially applicable for use in the extraction, transport or refining of mineral oil or related fluids.Type: GrantFiled: January 11, 2001Date of Patent: July 4, 2006Assignee: NKT Flexibles I/SInventors: Kristian Glejbol, Jakob Wedel-Heinen
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Patent number: 7037557Abstract: A high temperature pre-insulated pipe system is shown which can withstand conveyance temperatures in excess of 250° F. The pipe system includes a first and second length of insulated and jacketed pipe. Each pipe length includes an inner metal pipe having an interior surface and an exterior surface and having an envelope of foamed insulation surrounding the inner pipe exterior surface. A thermally protective coating layer is applied between the metal pipe exterior and the surrounding layer of foamed insulation. The thermally protective layer effectively lowers the interface temperature between the inner metal pipe and outer foamed layer to prevent disbondment of the outer foamed layer as the temperature of the inner pipe increases.Type: GrantFiled: May 19, 2003Date of Patent: May 2, 2006Assignee: Thermacor Process, LPInventor: Thomas Joseph Keyes
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Patent number: 7036531Abstract: A heat insulating system for tubular bodies includes at least two superimposed evacuated panels (4, 4?), at least one of the panels is formed essentially by an evacuated envelope which contains a polymeric filling material inside thereof, and at least one other panel is formed essentially by an evacuated envelope which has an inorganic filler present inside thereof, in the form of powders, fibers or their mixtures. Each of the evacuated panels (4, 4?) is rolled up around a rolling axis to such that two opposed edges thereof (5, 5?) parallel to the rolling axis are mutually set side by side. The rolled evacuated panels (4, 4?) are also arranged with the edges (5) of an evacuated panel (4) being staggered with respect to the edges (5?) of another evacuated panel (4?).Type: GrantFiled: January 5, 2004Date of Patent: May 2, 2006Assignee: Saes Getters S.p.A.Inventors: Paolo Manini, Pierattilio Di Gregorio
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Patent number: 7032621Abstract: A high temperature pre-insulated piping system is shown which can withstand conveyance temperatures in excess of 250° F. The piping system includes a first and second length of insulated and jacketed pipe. Each pipe length includes an inner metal pipe having an interior surface and an exterior surface and having an envelope of foamed insulation surrounding the inner pipe exterior surface. A special release agent is applied between the metal pipe exterior and the surrounding layer of foamed insulation. The release agent causes intentional disbondment of the foamed insulation layer from the inner metal pipes under certain conditions of environmental stress.Type: GrantFiled: September 20, 2004Date of Patent: April 25, 2006Assignee: Thermacor Process, LPInventor: Thomas Joseph Keyes
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Patent number: 7028717Abstract: A high temperature pre-insulated piping system is shown which has a special water stop located along the length of the piping. The water stop has an internal disk which forms a pair of isolated chambers within the water stop. The internal disk is formed of a material which is impervious to the flow of water. As a result, the two internal chambers are isolated from one another and act as isolating elements to contain any breach in the exterior of the piping system to a specific location in the length of the pipe string.Type: GrantFiled: March 25, 2005Date of Patent: April 18, 2006Assignee: Thermacor Process, LPInventor: Thomas Joseph Keyes
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Patent number: 7025093Abstract: The invention relates to the use of a thermally insulating composition in the form of crosslinked polyurethane elastomer gel, obtained by reacting at least one polyol and at least one polyisocyanate in the presence of at least one inert organic filler, for the thermal insulation of pipeline systems present in a product-transfer conduit.Type: GrantFiled: October 26, 2001Date of Patent: April 11, 2006Assignee: AtofinaInventors: Evelyne Bonnet, Laurent Martin, Helene Egret
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Patent number: 7011115Abstract: An insulated pipe structure suitable for use in an undersea pipeline comprises, intermediate its ends, an inner pipe (11) for serving as a conduit for fluid flowing through the pipe structure, thermally insulating material (3) extending around the inner pipe and an outer shell (2) extending around the insulating material (3). At each of the ends of the pipe structure the inner pipe is connected to the outer shell by a thermally insulating connecting element (4) which is secured to the inner pipe (11) at least partly by virtue of adhesive forces between the inner pipe (11) and the connecting element (4). The thermally insulating connecting element (4) and the outer shell (2) together protect the insulating material (3) from water ingress and from ambient pressure.Type: GrantFiled: May 26, 2000Date of Patent: March 14, 2006Assignee: Saipem, S.p.A.Inventors: Umberto Giovannini, Giuseppe Stani
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Patent number: 7004203Abstract: The heating and/or sanitation pipe comprises an inner pipe (12) made of a plastic material and a metal corrugated pipe (14) surrounding the inner pipe (12) at a radial distance {circle around (R)}). Further, the heating and/or sanitation pipe is provided with a compressible and/or expanded material (16) between the inner pipe (12) and the corrugated pipe (14) for fixing the inner pipe (12) inside the corrugated pipe (14). The compressible and/or expanded material (16) is adapted to be detached from the inner pipe for the purpose of exposing a connecting end of the inner pipe (12). Further, the heating and/or sanitation pipe comprises an insulation layer (18) surrounding the metal corrugated pipe (14) and an outer covering (20) around the insulation layer (18).Type: GrantFiled: July 7, 2002Date of Patent: February 28, 2006Assignee: Uponor Innovation ABInventors: Joerg Claussen, Hans-Joachim Dusoer, Joerg Hansen, Jyri Jaervenkyla, Franz-Josef Riesselmann
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Patent number: 6986367Abstract: A method of insulating ducts is described including laminating a reinforcement fabric to a fibrous insulation board, lifting at least a portion of the reinforcement fabric from the fibrous insulation board, applying a first layer of a mastic coating to the fibrous insulation board, embedding the reinforcement fabric into the first layer of mastic coating, and applying a second layer of the mastic coating to the outside surface of the reinforcement fabric. The reinforcement fabric is laminated to the fibrous insulation board using an adhesive material.Type: GrantFiled: November 20, 2003Date of Patent: January 17, 2006Assignee: CertainTeed CorporationInventors: Murray S. Toas, Walter Steve Leeper, Jr., Steve Archibald, John Ward
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Patent number: 6986922Abstract: Single layer and multilayer polyolefin foam pipes with improved compression resistance have a polyolefin foam layer which consists of mixtures of modified propylene polymers having strain hardening behaviour or propylene homopolymers with a stereospecifity index >98% or propylene copolymers with a stereospecifity index of the homopolymer matrix of >96%. The polyolefin foam pipes are coated steel pipes for transporting crude oil or gas products or district heating applications, single layer pipes for insulation purposes and for non- or low-pressure applications and multilayer plastic pipes for the transportation of hot or cold fluids.Type: GrantFiled: July 10, 2001Date of Patent: January 17, 2006Assignee: Borealis GmbHInventors: Achim Hesse, Tony Lindstroem, Carl-Gustaf Ek, Cecilia Rydin
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Patent number: 6983768Abstract: Disclosed is a pre-formed insulation module (310, 320) for insulating a process component having opposed longitudinally extending contacting surfaces (390) extending along a length thereof and terminal contacting surfaces (337, 387) at each end thereof comprising: a) at least one first inner insulation layer (314) being constituted of an insulation material having suitable thermal shock characteristic under cryogenic conditions and having one surface (314d) proximate or contacting with a component to be insulated; b) at least one second outer insulation layer disposed radially outwardly of said inner insulation layer (314); c) at least one water vapour barrier layer (319); d) a cladding layer (318).Type: GrantFiled: October 25, 1999Date of Patent: January 10, 2006Assignee: Bains Harding LimitedInventor: Milivoj Vujic