To Finite Length Tubular Product Patents (Class 264/573)
  • Patent number: 10603833
    Abstract: This invention discloses a process for preparation of a balloon expandable biodegradable polymer stent with thin struts (strut thickness 130 ?m or less, preferably 100-110 ?m) with high fatigue and radial strength. The invention discloses a process for the preparation of a biodegradable polymer stent which involves deforming an extruded biodegradable polymer tube axially at a first predefined temperature by applying an axial force for a first predefined time interval. The process further includes radially expanding the axially stretched tube at a second predefined temperature by pressurizing the tube with an inert gas in one or more stages, the pressure applied in each successive stage being higher than the pressure applied in a previous stage.
    Type: Grant
    Filed: April 5, 2017
    Date of Patent: March 31, 2020
    Assignee: MERIL LIFE SCIENCES PVT. LTD.
    Inventors: Rajnikant Gandalal Vyas, Pramod Kumar Minocha, Deveshkumar Mahendralal Kothwala
  • Patent number: 10525642
    Abstract: A preform is infused with a resin to form a composite laminate. The preform is placed between a mold and a vacuum bag. An offset tool is placed to permit the vacuum bag to lift away from a surface of the preform in a controlled amount. A charge of the resin is injected between the vacuum bag and the preform to lift the vacuum bag off the surface of the preform and move the vacuum bag toward the offset tool, so that the resin occupies a volume between the vacuum bag and the preform. The preform is infused with the resin by applying a super-atmospheric pressure to an outer surface of the vacuum bag to transport the resin from the volume between the vacuum bag and the preform into a volume within the preform. The resin in the preform is cured, forming the composite laminate.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: January 7, 2020
    Assignee: GKN Aerospace Services Structures LLC
    Inventors: Christopher J. Feeney, Steven Hayse, David A. Rogozinski
  • Patent number: 9725352
    Abstract: A method for forming a hollow cylinder, in a single step or in as small a number of steps as possible, into a quartz glass tube with a large outer diameter and high dimensional stability is provided. The cylinder, while rotating about a rotation axis, is softened in portions in a heating zone which is moved at a relative feed rate Va, and the softened portion is radially expanded by a centrifugal force and/or an internal overpressure applied in the hollow cylinder bore so as to form a deformation zone. The tube is continuously shaped with an outer diameter D2 which is greater than that of the hollow cylinder D1. The radial expansion of the softened portion is carried out at a location-dependent radial expansion rate Vr, the profile of which along the deformation zone has a maximum value Vr,max which is smaller than two times the feed rate Va.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: August 8, 2017
    Assignee: Heraeus Quarzglas GmbH & Co. KG
    Inventors: Boris Gromann, Nigel Whippey
  • Patent number: 9238011
    Abstract: Methods, compositions, systems, devices and kits are provided for preparing and using a multi-layer polymeric microstructure composition for delivering a therapeutic agent to a subject. In various embodiments, the therapeutic agent includes at least one selected from the group of: a drug, a protein, a sugar, a carbohydrate, and a nucleotide sequence. In related embodiments, the composition is a fiber, a suture, a sphere, an implant, or a scaffold.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: January 19, 2016
    Assignee: Brown University
    Inventors: Edith Mathiowitz, Danya Lavin, Richard Hopkins
  • Patent number: 9199418
    Abstract: Systems and methods for assembling a skin of a composite structure on an outer surface of an inner mold line layup mandrel. The systems and methods include receiving a plurality of ply kits, assembling the plurality of ply kits to form a skin segment that defines a portion of the skin, and affixing the skin segment to the outer surface of the layup mandrel. The assembling includes transferring a respective ply kit of the plurality of ply kits to a non-planar transfer tool, compacting the respective ply kit on the non-planar transfer tool, and repeating the transferring and the compacting for each ply kit in the plurality of ply kits to form the skin segment.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: December 1, 2015
    Assignee: The Boeing Company
    Inventors: Daniel M. Rotter, Paul Chih-Yung Chang, Brad A. Coxon, Paul E. Nelson, Kimberlee Madden, Henry Macias, Jennifer Sue Noel, Eugene H. Jeppesen, Kurtis S. Willden, Arvid J. Berg, Richard V. Phillips, Stephen Lee Metschan, Stephen K. Kirchmeier, Joseph D. Anderson, Scott A. Boner
  • Patent number: 8980161
    Abstract: A process for making a reservoir including steps of positioning a hollow extrudate at an elevated temperature in a mold cavity, inserting a fitting into an end of the extrudate, sealing an outer surface of the fitting with an interior surface of the extrudate using latent heat within the extrudate, and forming at least a portion of the extrudate against the mold cavity forming a reservoir with the fitting sealed into the reservoir.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: March 17, 2015
    Assignee: Mercury Plastics, Inc.
    Inventors: William W. Rowley, Grandin A. Rushlander, Robert Yunk, Earl Christian, Jr.
  • Patent number: 8961862
    Abstract: Methods of fabricating a polymeric implantable device with improved fracture toughness through annealing are disclosed herein. A polymeric construct is annealed with no or substantially no crystal growth to increase nucleation density. After the annealing, crystallites are grown around the formed nuclei. An implantable medical device, such as a stent, can be fabricated from the polymer construct after the crystallite growth.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: February 24, 2015
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Yunbing Wang, James Oberhauser
  • Publication number: 20140346715
    Abstract: A method for producing a tubular structural component and device for production thereof are disclosed. A tubular moulding tool has an inner mould surface shaped corresponding to an outer surface of the structural component. A support surface of an expandable support, formed corresponding to the moulding tool shape such that in an unexpanded state the support fills the moulding tool while the support surface and the mould surface run parallel leaving an expansion spacing of the support surface to the mould surface, is covered with a tubular non-crimp fibre fabric, such that fibres of a fibre layer of the non-crimp fibre fabric run diagonally around the support. After the support has been arranged in the moulding tool, the non-crimp fibre fabric is pressed against the mould surface by expanding the support with radial expansion of the non-crimp fibre fabric. The non-crimp fibre fabric is infiltrated by a curable matrix.
    Type: Application
    Filed: May 23, 2014
    Publication date: November 27, 2014
    Inventors: HAUKE LENGSFELD, VOLKER REYE
  • Patent number: 8858857
    Abstract: A method of fabricating a composite vessel encompassing rapid manufacturing that is applicable to composite hydrogen and other gas storage tanks, both for high-pressure cylinders, as well as low-pressure conformal tanks. The process of fabrication includes using a liner, of metal or plastic materials, over which a braided or developed preform is wrapped. The dry fiber wrapped liner is placed in a mold and resin injected into the cavity formed between the liner and the mold outer walls. The liner is flooded with heated and/or cooled pressurized fluid thus enabling complete and independent process control from within the liner for both the resin injection and the cure phases. Fiber placement control is determined through combined biaxial and triaxial braid/preform design, and by wrapping at controlled tension onto the supporting liner. Fiber tension control is further enhanced by the methodology of mold loading whereby tensioning forces are enacted during actual load and close.
    Type: Grant
    Filed: March 12, 2008
    Date of Patent: October 14, 2014
    Inventors: Geoffrey Michael Wood, Pamela M. Schneider, Steven C. Stenard
  • Patent number: 8852263
    Abstract: The use of nucleating agents to manufacture polymeric stents is disclosed. The resulting stents may have increased crystallinity, decreased crystal size, increased mechanical properties, and faster degradation times.
    Type: Grant
    Filed: July 12, 2012
    Date of Patent: October 7, 2014
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventor: Yunbing Wang
  • Publication number: 20140265060
    Abstract: Methods of manufacturing a medical article that include radial deformation of a polymer tube are disclosed. A medical article, such as an implantable medical device or an inflatable member, may be fabricated from a deformed tube.
    Type: Application
    Filed: May 28, 2014
    Publication date: September 18, 2014
    Applicant: Abbott Cardiovascular Systems Inc.
    Inventors: Bin Huang, Jonathan P. Durcan
  • Patent number: 8778256
    Abstract: Methods of manufacturing a medical article that include radial deformation of a polymer tube are disclosed. A medical article, such as an implantable medical device or an inflatable member, may be fabricated from a deformed tube.
    Type: Grant
    Filed: September 30, 2004
    Date of Patent: July 15, 2014
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Bin Huang, Jonathan P. Durcan
  • Patent number: 8763250
    Abstract: The present invention relates to a method for producing a pipe (1) which is provided in its wall (2) and between its ends with at least one channel (4) which passes through the wall (2), in which method a plastic pipe preform (16) is blow-moulded, wherein a protrusion (17) is provided for the channel (4), this protrusion lining the pipe preform (16) and having inside dimensions which are larger than the outside dimensions of the channel (4), in which method the pipe preform (16) in its as yet unsolidified state is squashed in the region of the protrusion (17) in such a way that a rough channel (21) communicating with the interior (3) of the pipe (1) is formed for the channel (4), this rough channel being closed at its end remote from the interior (3) of the pipe and having, apart from the desired channel length (7), the outside dimension of the channel (4), and in which method the squashed pipe preform (16) in its solidified state is cut in the region of the rough channel (21) in such a way that the channel (
    Type: Grant
    Filed: December 13, 2007
    Date of Patent: July 1, 2014
    Assignee: Mahle International GmbH
    Inventor: Thomas Zirkelbach
  • Patent number: 8765040
    Abstract: Methods of fabricating a polymeric implantable device, such as a stent, with improved fracture toughness through annealing a polymer construct below the glass transition temperature of the polymer of the construct prior to a deformation step are disclosed herein. The deformation of the construct induces crystallization in the polymer construct through strain-induced crystallization. The annealing of the polymer construct accelerates the crystallization induced during the deformation and results in an increase in crystallite density with smaller crystallites as compared to deformation of a tube that has not been annealed. A stent scaffolding is then made from the deformed tube.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: July 1, 2014
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Lothar W. Kleiner, Fuh-Wei Tang
  • Patent number: 8758006
    Abstract: Processes for manufacturing hollow structures such as spars for helicopter rotor blades, fixed wings for aircraft, and other aerostructures can include the provision of a path for gases to exit the material from which the spar is formed as the material is heated and cured, to help eliminate voids within the material caused by the presence of such gases.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: June 24, 2014
    Inventor: Franklin D. Carson
  • Patent number: 8721959
    Abstract: A system for self-repairing matrices such as concrete or cementitous matrices, polymeric matrices, and/or fibrous matrices, including laminates thereof The system includes repair agents retained in and/or on vessels, such as hollow fibers, within the matrix. Upon impact, the vessel rupture, releasing the chemicals. For multi-layer laminates, the systems provides a total dynamic energetic circulation system that functions as an in situ fluidic system in at least one layer or area. The energy from the impact ruptures the vessels to release the chemical(s), and mixes the chemical(s) and pushes the chemical(s) and/or resulting compound through the matrix. The repair agents can withstand high temperatures, such as the heat of processing of many laminates, e.g., 250-350° F.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: May 13, 2014
    Inventor: Carolyn Dry
  • Patent number: 8709333
    Abstract: The present invention includes injecting a molten resin into a main cavity, which has on its one end a pressure port provided with a floating core and on its other end a first outlet, and a branch cavity, which communicates with the main cavity and has on its end a second outlet allowed to open and close, injecting a pressurized fluid through the pressure port after the injection of the molten resin, and moving the floating core to the first outlet side, and, at the same time, extruding the molten resin from the first outlet to form a main pipe hollow, and opening the second outlet after the main pipe hollow reaches a portion at which the branch cavity communicates with the main cavity, and extruding the molten resin by the pressurized fluid from the second outlet to form the branch pipe hollow.
    Type: Grant
    Filed: January 21, 2010
    Date of Patent: April 29, 2014
    Assignee: RP Topla Limited
    Inventors: Minoru Ojiro, Tomoyoshi Sakamoto, Hiroki Katagiri
  • Patent number: 8709331
    Abstract: The apparatus comprises a mold assembly including at least one bore therethrough having a cavity therein defining the shape of the finished microneedle shape to be formed therein. The bore has an inlet opening and an exit opening. The apparatus also comprises means for locating the polymer to be formed at one end of the cavity and means for introducing fluid into the inlet opening of said bore and into the cavity. The apparatus also comprises exhaust means communicating with the exit opening of the bore, so that introducing the fluid through the polymer causes the polymer to assume the shape of the cavity and the fluid forms a hollow channel to define a needle-like structure in the polymer as the fluid is exhausted through the cavity and the bore.
    Type: Grant
    Filed: March 16, 2010
    Date of Patent: April 29, 2014
    Assignee: 10x Technology LLC
    Inventor: Robert M. Pricone
  • Publication number: 20140083550
    Abstract: The present invention pertains to a process for lining a metal pipeline, said process comprising the following steps: (i) processing a thermoplastic fluoropolymer composition to yield a pipe liner having an outer diameter greater than the inner diameter of said metal pipeline, said thermoplastic fluoropolymer composition comprising: (A) from 10% to 60% by weight, on the total weight of polymer (A) and polymer (B) of at least one vinylidene fluoride (VDF) homopolymer [polymer (A)], (B) from 40% to 90% by weight, based on the total weight of polymer (A) and polymer (B) of at least one VDF copolymer comprising from 2% to 15% by moles of recurring units derived from at least one other fluorinated comonomer (F) [polymer (B)], and (ii) deforming said pipe liner, (iii) introducing the deformed pipe liner in said metal pipeline; and (iv) expanding the deformed pipe liner to fit with the inner diameter of said metal pipeline. The present invention also relates to a pipeline system.
    Type: Application
    Filed: May 25, 2012
    Publication date: March 27, 2014
    Applicant: SOLVAY SPECIALTY POLYMERS ITALY S.P.A.
    Inventors: Nicasio Messina, Marco Mirenda, Giambattista Besana, Julio A. Abusleme, Régis Faig
  • Patent number: 8679397
    Abstract: A hollow body formed of a thermoplastic resin and having uniform inner diameter and thickness and an excellent inner surface smoothness, and, in particular, a pipe-shaped hollow body having a bent portion is manufactured by injection molding. A method of manufacturing a hollow body includes injecting a molten resin 8 into a mold cavity 2 of a mold 1, the mold cavity 2 having on its one end a pressure port 4 provided with a floating core 6 and on its other end an outlet 5, pressure-injecting a pressurized fluid through the pressure port 4 after the injection of the molten resin 8, and moving the floating core 6 toward the outlet 5, and, at the same time, extruding the molten resin 8 from the outlet 5.
    Type: Grant
    Filed: January 21, 2010
    Date of Patent: March 25, 2014
    Assignee: RP Topla Limited
    Inventors: Tomoyoshi Sakamoto, Minoru Ojiro, Hiroki Katagiri
  • Patent number: 8679398
    Abstract: An apparatus for folding a pre-pleated catheter balloon comprises a stationary base member; a rotatable drive hub which is moveable in relation to the stationary base member; and a folding head aligned with respect to the stationary base member and to the rotatable drive hub. The folding head includes at least three segments, each having a proximal end and an angled distal end with at least one angled side face terminating in an edge of a predetermined length. The segments are arranged so that the segment distal ends are disposed adjacent to and defining a central aperture The segment distal ends move closer to the central point upon rotation of the rotatable hub member in a predetermined direction, whereby the balloon is folded around the shaft substrate upon rotation of the rotatable hub.
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: March 25, 2014
    Assignee: Machine Solutions, Inc.
    Inventors: Tom Motsenbocker, Edward Goff, Daniel J. Kasprzyk
  • Publication number: 20140076327
    Abstract: The invention concerns a method for making a reservoir (5) containing an active substance and adapted to be introduced into a natural cavity of a living being, the reservoir (5) comprising a membrane (9) permeable to the active substance.
    Type: Application
    Filed: March 4, 2013
    Publication date: March 20, 2014
    Applicant: BAYER INTELLECTUAL PROPERTY GmbH
    Inventor: Charles-Dominique LAFONT
  • Patent number: 8658071
    Abstract: A method for enabling a lining (14) to be applied to a pipe elbow or bend C comprises the steps of connecting a tie member (12) to an end of a flexible elongate mandrel (1), drawing the tie member through the elbow or bend so as to draw the mandrel therethrough and locate opposing ends of the mandrel adjacent to opposing respective ends of the elbow or bend, and securing the mandrel ends in relation to the respective ends of the elbow or bend. The mandrel can be adapted to the elbow or bend by locating the elbow or bend in a given orientation and deriving a profile S of the elbow or bend while in that orientation, removing the elbow or bend and then locating the mandrel in the given orientation, and adjusting the mandrel in relation to the profile of the elbow or bend to adapt it thereto.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: February 25, 2014
    Assignee: Weir Vulco, S.A.
    Inventors: Ricardo Abarca Melo, Wilfredo San Martin Cisterna, Jaime Ramirez Toledo
  • Patent number: 8641134
    Abstract: An air duct for an automotive vehicle is blow molded with an elongated, hollow structural member to be used as a portion of a body of the vehicle. The structural member has an inner wall defining an elongated cavity communicating with first and second access holes at respective longitudinal positions along the structural member. A parison comprised of a thermally insulating material is inserted into the internal cavity. A source of inflation gas is connected to a mouth portion or the parison. The parison is heated and inflated within the internal cavity to an expanded shape to form the air duct disposed against the inner wall and spanning the first and second access holes. The air duct at one of the access holes is configured as an air inlet. The air duct at the other one of the access holes is configured as an air outlet.
    Type: Grant
    Filed: April 2, 2012
    Date of Patent: February 4, 2014
    Assignee: Ford Global Technologies, LLC
    Inventors: Robert S. Sawyer, Mukesh Kumar, Martha E. Nefcy
  • Publication number: 20130282097
    Abstract: The present invention relates to medical devices for dilating or enlarging strictures or narrowed regions of body vessels. Specifically, the present invention relates to a high pressure dilation balloon catheter that includes an elongate shaft extending between a proximal end and a distal end, the proximal end being adapted for attachment to a source of inflation fluid, and a lumen extending through the shaft adapted for the passage of the inflation fluid; and a balloon disposed on the distal end of the shaft and having a balloon body extending between a proximal end and a distal end of the balloon.
    Type: Application
    Filed: April 9, 2013
    Publication date: October 24, 2013
    Inventor: David G. Burton
  • Publication number: 20130249148
    Abstract: A shape adjusting mechanism for an extrusion molding machine includes a shape adjusting member, a blow-in mechanism, and a discharge mechanism. The shape adjusting member comes into contact with an inner circumferential surface of a molten substantially cylindrical resin extruded and transported from a ferrule provided to an extrusion molding machine, and adjusts the shape of the substantially cylindrical resin. The blow-in mechanism blows a gas into the substantially cylindrical resin transported between the ferrule and the shape adjusting member. The discharge mechanism discharges to the outside the gas in the substantially cylindrical resin transported between the ferrule and the shape adjusting member.
    Type: Application
    Filed: September 6, 2012
    Publication date: September 26, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Tomoo MATSUSHIMA, Kenji OOMORI, Shoichi MORITA
  • Patent number: 8540926
    Abstract: A method of, and apparatus for, profiling a tube to form at least one profiled product having a first open end and a second open end. The tube (30) is supported on a support (19) which supports the tube along at least a substantial part of the length of the tube corresponding to the product(s) to be formed. At least a portion of the tube is heated to form at least one heat-softened portion of the tube in the region(s) corresponding to the product(s) to be formed. A fluid pressure change (28) is applied to the region(s) of the tube corresponding to the product(s) to be formed to form at least one profiled product having a first open end, a second open end, and a predetermined shape with one or more three dimensional profile features.
    Type: Grant
    Filed: November 20, 2006
    Date of Patent: September 24, 2013
    Inventor: Alan Mark Crawley
  • Patent number: 8535593
    Abstract: Methods of fabricating a polymeric implantable device with improved fracture toughness through annealing, nucleating agents, or both are disclosed herein. A polymeric construct that is completely amorphous or that has a very low crystallinity is annealed with no or substantially no crystal growth to increase nucleation density. Alternatively, the polymer construct includes nucleating agent. The crystallinity of the polymer construct is increased with a high nucleation density through an increase in temperature, deformation, or both. An implantable medical device, such as a stent, can be fabricated from the polymer construct after the increase in crystallinity.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: September 17, 2013
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Yunbing Wang, Lothar W. Kleiner
  • Patent number: 8535542
    Abstract: A method of separating a mixture of liquid and insoluble solids in a filter press may comprise: pumping the mixture into a chamber between two filter plates in the filter press to form a filter cake, wherein the chamber is lined by filter cloths, and wherein, during the pumping, filtrate is forced through the filter cloths and out of the chamber; heating the filter cake in the chamber, wherein, during the heating, filtrate is forced through the filter cloths and out of the chamber, and wherein the heating is by radio frequency irradiation of the filter cake in the chamber; and releasing dried filter cake from the chamber.
    Type: Grant
    Filed: November 2, 2009
    Date of Patent: September 17, 2013
    Inventors: Daniel J. Simpson, Ferdinand Kogler
  • Patent number: 8524132
    Abstract: Devices and methods for treating veins and venous conditions, such as chronic cerebrospinal venous insufficiency, are provided. In one aspect, the disclosed subject matter provides an intraluminal scaffold having a generally tubular body with a lumen defined therethrough, the tubular body having a compressed condition for delivery and an expanded condition for implant within a vessel having a distended portion, at least a length of the tubular body configured to form an enlarged portion in the expanded condition to engage a wall of the distended portion of the vessel. Methods for fabricating and using the scaffold, methods for remodeling a vein, and methods of deploying a medical device in a vessel without negatively impacting the function of a valve of the vessel, are also provided.
    Type: Grant
    Filed: April 14, 2011
    Date of Patent: September 3, 2013
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Randolf Von Oepen, Kevin J. Ehrenreich
  • Patent number: 8501079
    Abstract: Methods to expand polymer tubing with desirable or optimum morphology and mechanical properties for stent manufacture and fabrication of a stent therefrom are disclosed.
    Type: Grant
    Filed: September 14, 2009
    Date of Patent: August 6, 2013
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Thierry Glauser, Vincent Gueriguian, Bethany Steichen, James Oberhauser, Manish Gada, Lothar Kleiner, Mary Beth Kossuth
  • Patent number: 8501078
    Abstract: A method for blow molding containers having cross-sections of a non-circular shape from preforms, in which a temperature profile varying at least in the circumferential direction of the preform is produced by means of at least one heat transfer element, for which purpose the preform and at least the heat transfer element are oriented toward one another by a relative rotational movement in the circumferential direction of the preform, the heat transfer element is rotated relative to the stationary preform about a heat transfer element axis during the relative rotational movement. Further, a device for blow molding such containers where the heat transfer element and the holder are rotatable about a heat transfer element axis and are coupled with a rotational drive.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: August 6, 2013
    Assignee: Krones AG
    Inventor: Rupert Meinzinger
  • Patent number: 8431067
    Abstract: The invention described herein relates to a method by which a reservoir having desired end connection profiles may be made using shape memory characteristics of crosslinking to compressively seal the connection profiles into the reservoir.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: April 30, 2013
    Assignee: Mercury Plastics, Inc.
    Inventors: William W. Rowley, Grandin A. Rushlander, Robert Yunk, Earl Christian, Jr.
  • Patent number: 8419881
    Abstract: The present invention provides a method for manufacturing a hollow composite structure by forming a prepreg product using a plurality of prepregs, forming a soft coating layer on an inner surface of the prepreg product, and compressing the prepreg product by applying pressurized air to the coating layer and, at the same time, applying heat to the prepregs.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: April 16, 2013
    Assignees: Hyundai Motor Company, Industry-Academic Cooperation Foundation, Younsei University
    Inventors: Heoung Jae Chun, Wook Jin Na
  • Patent number: 8394317
    Abstract: Methods of fabricating a polymeric implantable device with improved fracture toughness through annealing are disclosed herein. A polymeric construct is annealed with no or substantially no crystal growth to increase nucleation density. After the annealing, crystallites are grown around the formed nuclei. An implantable medical device, such as a stent, can be fabricated from the polymer construct after the crystallite growth.
    Type: Grant
    Filed: August 11, 2008
    Date of Patent: March 12, 2013
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Yunbing Wang, James Oberhauser
  • Patent number: 8372332
    Abstract: Methods of fabricating a polymeric implantable device with improved fracture toughness through annealing, nucleating agents, or both are disclosed herein. A polymeric construct that is completely amorphous or that has a very low crystallinity is annealed with no or substantially no crystal growth to increase nucleation density. Alternatively, the polymer construct includes nucleating agent. The crystallinity of the polymer construct is increased with a high nucleation density through an increase in temperature, deformation, or both. An implantable medical device, such as a stent, can be fabricated from the polymer construct after the increase in crystallinity.
    Type: Grant
    Filed: May 13, 2009
    Date of Patent: February 12, 2013
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Yunbing Wang, Lothar Kleiner
  • Patent number: 8252215
    Abstract: The use of nucleating agents to manufacture polymeric stents is disclosed. The resulting stents may have increased crystallinity, decreased crystal size, increased mechanical properties, and faster degradation times.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: August 28, 2012
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventor: Yunbing Wang
  • Patent number: 8241554
    Abstract: Methods of fabricating an implantable medical device from a tube or a sheet in an expanded or stretched state, respectively, are disclosed herein. The implantable medical device may be an endoprosthesis such as a stent. In one embodiment, the method may include radially expanding a tube about a cylindrical axis of the tube from a first diameter to a second diameter. The method may further include forming a pattern on at least a portion of the expanded tube. Additional embodiments may include forming a stent pattern on a stretched sheet from which a stent may be formed. In addition, a stent pattern may be formed on a tube that is formed from a stretched sheet.
    Type: Grant
    Filed: June 29, 2004
    Date of Patent: August 14, 2012
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Anthony J. Abbate, David C. Gale, Klaus Kleine, Svava Maria Atladottir
  • Publication number: 20120193851
    Abstract: The invention provides vehicle suspension systems, and more particularly jounce bumpers made of elastomeric thermoplastic material, having improved design to maximize energy absorption.
    Type: Application
    Filed: August 4, 2011
    Publication date: August 2, 2012
    Applicant: E.I.DU PONT DE NEMOURS AND COMPANY
    Inventors: Peter Laszlo Szekely, Damien Van Der Zyppe
  • Publication number: 20120193850
    Abstract: The invention provides vehicle suspension systems, and more particularly jounce bumpers made of elastomeric thermoplastic material, having improved design to maximize energy absorption.
    Type: Application
    Filed: August 4, 2011
    Publication date: August 2, 2012
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: PETER LASZLO SZEKELY, DAMIEN VAN DER ZYPPE
  • Patent number: 8221673
    Abstract: The present invention provides a method for producing an injection molded panel member having a first portion, a second portion, and an appearance surface portion. The method includes placing the appearance surface portion of the panel member into a mold cavity. The mold cavity preferably includes a first chamber adapted to form the first portion of the panel member, and a second chamber adapted to form the second portion of the panel member. After the appearance surface portion of the panel member is inserted into the mold, molten plastic material and pressurized gas are injected into the first chamber of the mold cavity. After the molten plastic material is injected into the first chamber of the mold, molten plastic material is injected into the second chamber of the mold cavity. The molten plastic is then cooled until it solidifies. After the molten plastic is sufficiently cooled, the pressurized gas is vented and the panel member is removed from the mold.
    Type: Grant
    Filed: March 8, 2006
    Date of Patent: July 17, 2012
    Assignee: Century Plastics, Inc.
    Inventors: Calvin A. Saur, Robert L. Becker
  • Patent number: 8215945
    Abstract: An apparatus for forming a hollow FRP article by internal pressure molding includes a vacuum chamber, a forming die positioned in the vacuum chamber, a vacuum-chamber opening/closing mechanism, a composite-body support device for supporting a composite body without making the composite body come into contact with the forming die in a state where the forming die is opened by the vacuum-chamber opening/closing mechanism, the composite body including an airtight internal-pressure holding tube and a prepreg fitted on said airtight internal-pressure holding tube, an evacuation system for evacuating the vacuum chamber, an internal-pressure supplying device for applying pressure to an inside of the internal-pressure holding tube, and a controller for actuating the vacuum-chamber opening/closing mechanism to clamp the forming die to thereby bring the forming die and the composite body into intimate contact with each other.
    Type: Grant
    Filed: January 19, 2010
    Date of Patent: July 10, 2012
    Assignee: Fujikura Rubber Ltd.
    Inventors: Norio Matsumoto, Akiyasu Higuchi, Masaki Wakabayashi
  • Patent number: 8206636
    Abstract: Tubular casting processes, such as dip-coating, may be used to form substrates from polymeric solutions which may be used to fabricate implantable devices such as stents. The polymeric substrates may have multiple layers which retain the inherent properties of their starting materials and which are sufficiently ductile to prevent brittle fracture. Parameters such as the number of times the mandrel is immersed, the duration of time of each immersion within the solution, as well as the delay time between each immersion or the drying or curing time between dips and withdrawal rates of the mandrel from the solution may each be controlled to result in the desired mechanical characteristics. Additional post-processing may also be utilized to further increase strength of the substrate or to alter its shape.
    Type: Grant
    Filed: June 19, 2009
    Date of Patent: June 26, 2012
    Assignee: Amaranth Medical Pte.
    Inventors: Kamal Ramzipoor, Alfred N. K. Chia, Liwei Wang, Chang Y. Lee
  • Patent number: 8206635
    Abstract: Tubular casting processes, such as dip-coating, may be used to form substrates from polymeric solutions which may be used to fabricate implantable devices such as stents. The polymeric substrates may have multiple layers which retain the inherent properties of their starting materials and which are sufficiently ductile to prevent brittle fracture. Parameters such as the number of times the mandrel is immersed, the duration of time of each immersion within the solution, as well as the delay time between each immersion or the drying or curing time between dips and withdrawal rates of the mandrel from the solution may each be controlled to result in the desired mechanical characteristics. Additional post-processing may also be utilized to further increase strength of the substrate or to alter its shape.
    Type: Grant
    Filed: June 20, 2008
    Date of Patent: June 26, 2012
    Assignee: Amaranth Medical Pte.
    Inventors: Kamal Ramzipoor, Alfred N. K. Chia, Liwei Wang
  • Patent number: 8197744
    Abstract: A method and apparatus for blow molding an article wherein a parison is positioned between substantially opposed mold closures. The opposed mold closures and at least one other mold closure are advanced, wherein the at least one other mold closure is advanced into abutment with at least one of another of the substantially opposed mold closures, and another of the at least one other mold closure. Thereafter, a gas may be injected within the interior of the parison to form a molded article, the mold closures retracted along their respective axes, and the molded article removed.
    Type: Grant
    Filed: August 5, 2004
    Date of Patent: June 12, 2012
    Assignee: TI Group Automotive Systems, L.L.C.
    Inventors: Harald Knueppel, Steve L. Toth
  • Patent number: 8173062
    Abstract: Methods of manufacturing a medical article that include radial deformation of a polymer tube are disclosed. A medical article, such as an implantable medical device or an inflatable member, may be fabricated from a deformed tube.
    Type: Grant
    Filed: September 30, 2004
    Date of Patent: May 8, 2012
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventor: Jonathan P. Durcan
  • Publication number: 20120068388
    Abstract: A hollow body formed of a thermoplastic resin and having uniform inner diameter and thickness and an excellent inner surface smoothness, and, in particular, a pipe-shaped hollow body having a bent portion is manufactured by injection molding. A method of manufacturing a hollow body includes injecting a molten resin 8 into a mold cavity 2 of a mold 1, the mold cavity 2 having on its one end a pressure port 4 provided with a floating core 6 and on its other end an outlet 5, pressure-injecting a pressurized fluid through the pressure port 4 after the injection of the molten resin 8, and moving the floating core 6 toward the outlet 5, and, at the same time, extruding the molten resin 8 from the outlet 5.
    Type: Application
    Filed: January 21, 2010
    Publication date: March 22, 2012
    Applicant: RP Topla Limited
    Inventors: Tomoyoshi Sakamoto, Minoru Ojiro, Hiroki Katagiri
  • Publication number: 20120062021
    Abstract: A wheel rim comprising a lip formed on the wheel rim, the lip running parallel to the circumference of the rim. A method of forming a lip on a wheel rim, the method comprising: forming fiber layers on an upper and lower portion of a mold; forming fiber layers on an upper and lower portion of a mold; curing the fiber layers; removing the cured rim from the upper and lower portions of the mold; in which the internal surface of the lower portion of the mold comprises an indention that, once the fiber layers are cured, creates a lip on the surface of the rim.
    Type: Application
    Filed: November 15, 2011
    Publication date: March 15, 2012
    Applicant: REYNOLDS CYCLING LLC
    Inventor: Paul Eric Lew
  • Patent number: 8128860
    Abstract: An apparatus for folding a catheter balloon comprises a stationary base member; a rotatable drive hub which is moveable in relation to the stationary base member; and a pleating head aligned with respect to the stationary base member and to the rotatable drive hub. The pleating head includes at least three segments, each having a proximal end and an angled distal end with at least one angled side face terminating in an edge of a predetermined length. Each segment has a centerline between the proximal and distal ends, each segment having a proximal point and a distal point, and the proximal point being pivotally coupled by pins to the stationary base member and the distal point being pivotally coupled by pins to the rotatable hub member. The segments are arranged so that the segment distal ends are disposed adjacent to and a predetermined distance away from a central point and defining a central aperture with a spiral-pleat dimension having at least three channels in communication with a central aperture.
    Type: Grant
    Filed: July 13, 2005
    Date of Patent: March 6, 2012
    Assignee: Machine Solutions, Inc.
    Inventors: Tom Motsenbocker, Edward Goff, Daniel J. Kasprzyk
  • Publication number: 20120031869
    Abstract: Performs used in the preperation of a transiently-extant drink bottle is described. The drink bottle may be formed from joining two separate closable fluid holding compartments, each compartment capable of holding a unique drinking fluid. Joining of the compartments tends to allow for greater consumer choice in beverage selection as well as potential cooling of one beverage through its non-contact proximity to a second frozen beverage. PET preforms having joining elements can also aid in joining of closable fluid holding compartments to form a transiently-extant disposable drink bottle.
    Type: Application
    Filed: August 8, 2010
    Publication date: February 9, 2012
    Inventor: Alan Bauer