Alternately Twisted Patents (Class 57/204)
  • Patent number: 9103055
    Abstract: A device for producing intertwining knots in a multifilament thread has a rotating nozzle ring with an encircling guide groove on an outer casing and an encircling sealing surface on an inner casing. At least one nozzle bore opens radially into the guide groove and passes through the nozzle ring. The nozzle ring is guided on a stator that has an encircling sliding surface on its periphery for guiding the nozzle ring and that forms a pressure chamber having a chamber opening that opens into the sliding surface. The sealing surface of the nozzle ring interacts with the sliding surface of the stator in order to provide air sealing. The nozzle ring is formed in a pot-like manner with an end wall having a disc-like end sealing surface which interacts with an end sliding surface formed on an end side of the stator to provide air sealing.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: August 11, 2015
    Assignee: OERLIKON TEXTILE GMBH & CO. KG
    Inventors: Claus Matthies, Jan Westphal
  • Patent number: 8919092
    Abstract: An SZ laying machine for umbilical/power umbilical is described. Starting from an input end the machine includes: a first die receiving and collecting a first set of elongate elements substantially rectilinear from respective supplies of elongate elements, a second static die which receives and collects a second set of elongate elements substantially rectilinear from respective supplies of elongate elements and this second set is closed together with the first set into an assembled bundle, at least one supporting means which keeps the assembled bundle radially in place; a revolving device able to torsional rotate the bundle back and forth in an oscillating SZ manner, and a tape or band winding apparatus which in immediate proximity to the revolving device applies band or tape circumferentially onto the SZ laid bundle of elongate elements.
    Type: Grant
    Filed: October 5, 2009
    Date of Patent: December 30, 2014
    Assignee: Aker Subsea AS
    Inventors: Arild Figenschou, Finn Peter Gjerull
  • Patent number: 8756906
    Abstract: An upstream twisting inhibiting roller, a twist non-inhibiting roller, a twist provider and a downstream twist inhibiting roller are provided in this order along the path line of a coated optical fiber. The twist provider provides the twist to the coated optical fiber. The upstream twist inhibiting roller and the downstream twist inhibiting roller respectively inhibit a rotation of the coated optical fiber around the axis of the coated optical fiber. The twist non-inhibiting roller does not inhibit the rotation of the coated optical fiber around the axis of the coated optical fiber.
    Type: Grant
    Filed: March 11, 2009
    Date of Patent: June 24, 2014
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventor: Tetsuya Hayashi
  • Publication number: 20130205741
    Abstract: The present invention provides an improved method and device for producing an alternate S/Z twist plied braid and joined alternate S/Z twist plied yarns. The invention further provides an alternate S/Z twist plied braid and joined alternate S/Z twist plied yarns produced according to a process of the invention.
    Type: Application
    Filed: November 3, 2011
    Publication date: August 15, 2013
    Applicant: GILBOS N.V.
    Inventors: Erik Gilbos, Miguel Vermandel, Hans Evenepoel, Jeroen Claes
  • Patent number: 8429889
    Abstract: Apparatus and a method for producing a yarn, the apparatus and method comprising a reciprocating twisting stage, the reciprocating twisting stage comprising one or more twist rollers that rotate along an axis of rotation and that are arranged to move reciprocally along the axis of rotation to impart twist to one or more slivers to form twisted strands; and a drive system for one or more take up holders, the drive system arranged to have wound onto the one or more take up holders the yarn after two or more strands are twisted together to form the yarn. The drive system is arranged to drive the one or more take up holders such that the linear speed at which the yarn is wound onto the one or more take up holders can be controlled relative to the linear speed at which the strands exit the one or more twist rollers.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: April 30, 2013
    Inventor: David Arthur Lee
  • Patent number: 8117816
    Abstract: The present application of the invention aims at improving knot strength of a twisted yarn without compromising circularity, with respect to various yarns including a fishing line. For such purpose, the present application of the invention provides a yarn including a multifilament subjected to two twisting processes in different directions, and a coating resin that covers a surface of the multifilament; wherein the multifilament is subjected to a first twist in one direction, and then to a second twist in a direction opposite to that of the first twist, without being doubled with another yarn.
    Type: Grant
    Filed: February 16, 2006
    Date of Patent: February 21, 2012
    Assignee: Duel Co., Inc.
    Inventors: Yasuhisa Yamamoto, Eric Eun-Ha Choi
  • Publication number: 20110016841
    Abstract: ATP yarns having high twist efficiency (low residual twist) as well as methods for increasing the self plying action that occurs in ATP yarn processing. The self plying action and the ATP yarn structure may be improved by increasing the convergence angle of the singles twist yarns to above 50 degrees (compared to current values of 0 to 35 degrees). The increased convergence angle permits an increase in the ply twist above the level possible by self plying alone. This results in a yarn with reduced residual singles twist. An array of singles torque jets and an optional ply torque jet has been developed to achieve a high convergence angle. The angle between the singles torque jet axes can be varied from 0 to 180 degrees.
    Type: Application
    Filed: May 16, 2008
    Publication date: January 27, 2011
    Applicant: DREXEL UNIVERSITY
    Inventors: Peter Popper, Donia Elkhamy, Paul Yngve, Frank Ko
  • Patent number: 7810308
    Abstract: The invention relates to a method for producing a towel, specifically a low twist towel, comprising the following steps: Z twisting a thick yarn and separately Z twisting a fine count yarn; unevenly S twisting the Z-twisted yarns to make the volume of the thick yarn more than that of the fine count; weaving the yarn to produce a fabric; processing the fabric with hot water to reduce inner tension in the yarn and make the fabric become fluffy. Fabric produced by this method can solve the dependency on PVA, reduce energy consumption and material consumption, and prevent water pollution. This method for producing a low twist towel is environmentally friendly, healthy, and energy saving.
    Type: Grant
    Filed: September 24, 2008
    Date of Patent: October 12, 2010
    Assignee: Loftex USA LLC
    Inventor: Hongxing Wang
  • Publication number: 20100229521
    Abstract: The present application of the invention aims at improving knot strength of a twisted yarn without compromising circularity, with respect to various yarns including a fishing line. For such purpose, the present application of the invention provides a yarn including a multifilament subjected to two twisting processes in different directions, and a coating resin that covers a surface of the multifilament; wherein the multifilament is subjected to a first twist in one direction, and then to a second twist in a direction opposite to that of the first twist, without being doubled with another yarn.
    Type: Application
    Filed: February 16, 2006
    Publication date: September 16, 2010
    Inventors: Yasuhisa Yamamoto, Eric Eun-Ha Choi
  • Publication number: 20100126134
    Abstract: A nanofibre yarn assembly including a longitudinally extending core for the yarn assembly and, twisted about the core, at least one ribbon of multiple nanofibres. The yarn assembly can be formed by drawing a longitudinally extending core for the yarn assembly through a concentric core-spinning zone, and, as the core travels through the core-spinning zone, twisting at least one ribbon of multiple nanofibres about the travelling core. Apparatus is also disclosed.
    Type: Application
    Filed: February 5, 2008
    Publication date: May 27, 2010
    Inventors: Kenneth Ross Atkinson, Niall Finn
  • Publication number: 20090229237
    Abstract: A cord for rubber reinforcement of the present invention includes a core strand including a plurality of strands (A), and a plurality of strands (B) disposed around the core strand. In the core strand, the plurality of strands (A) are finally twisted, and each of the plurality of strands (A) is formed of a plurality of reinforcing fibers (A) that are primarily twisted. Each of the plurality of strands (B) is formed of a plurality of reinforcing fibers (B) that are primarily twisted, and the plurality of strands (B) are finally twisted to be disposed around the core strand. The direction of final twist of the plurality of strands (B) is the same as the direction of primary twist in at least one strand (B) selected from the plurality of strands (B). The number of primary twists in the strand (B) is greater than the number of primary twists in the strand (A), and/or the number of final twists of the strands (B) is greater than the number of final twists of the strands (A).
    Type: Application
    Filed: November 8, 2006
    Publication date: September 17, 2009
    Inventors: Hideki Imanishi, Mitsuharu Akiyama, Hiroshi Iizuka
  • Publication number: 20090165883
    Abstract: Four light-transmitting mono filaments (2) each having an almost circular cross section and surface substantially being mirror surface are arranged in a single layer and in parallel, and a flat yarn (3) formed by fusing or melt-bonding adjacent mono filaments (2) to each other and fixing them is twisted. Twisting is imparted over a full length of a light diffusing yarn (1) continuously at a frequency of more than one time with a length five times as long as the width of the flat yarn (3). The twisting cyclically reverses the front and rear surfaces of the flat yarn (3) along the longitudinal direction of the light diffusing yarn (1) to continuously change the longitudinal-axis direction of each mono filament (2) along the longitudinal direction of the light diffusing yarn (1).
    Type: Application
    Filed: May 1, 2007
    Publication date: July 2, 2009
    Inventor: Nobuo Oyama
  • Patent number: 7309666
    Abstract: A silicone coated fabric having a base woven fabric that is formed from a synthetic fiber weaving yarn that has a yarn size of from 100 to 270 dtex, and a weaving size expressed by product calculated by multiplying the yarn size of a weaving yarn and a weave density (ends or picks/2.54 cm) of from 10,000 to 25,000 (dtex·ends (or picks)/2.54 cm) in both the warp direction and the weft direction, a silicone being applied to the woven fabric in an amount of from 5 to 25 g/m2, and having on one side a uniform silicone coating layer forming part of the silicone mentioned above. The silicone coated fabric is a lightweight coated fabric that shows improved heat resistance, improved flexibility and an improved low coefficient of friction as well as particularly improved burning resistance. The fabric can therefore be used for producing lightweight and compactly storable airbags that suppress bursting starting from a burnt-through-hole, and that shorten a deployment time.
    Type: Grant
    Filed: February 23, 2006
    Date of Patent: December 18, 2007
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Hideaki Ishii, Toshirou Nagaoka
  • Patent number: 6945026
    Abstract: An unspun yarn including a longitudinal main rope body formed from a least one fibre assembly of substantially untwisted and parallel fibres, and a least one reinforcing thread helically wound around the rope body and extending therealong in a single longitudinal direction. The direction in which the reinforcing thread is wound around the rope is reversed at predetermined intervals. A method of forming an unspun yarn, including providing a fibre assembly of substantially untwisted and parallel fibres and reinforcing thread, forming a longitudinal main rope body; intermittently imparting opposing twists to alternate sections of the rope body while drawing the reinforcing thread longitudinally into surface contact with a twisted section of the rope body, allowing the twisted section to engage the adjacent section of the reinforcing thread, releasing the opposing twists of the rope body causing the engaged reinforcing thread to wrap the rope body.
    Type: Grant
    Filed: December 3, 1999
    Date of Patent: September 20, 2005
    Assignee: Dyers Road Re-Manufacturing and Imports Limited
    Inventor: Ashley Robert Hanna
  • Patent number: 6753081
    Abstract: The present invention provides a synthetic fiber blend and methods for its use comprising a first fiber component formed of a homopolymer polypropylene fiber and a second fiber component being a copolymer formed of a polypropylene and a high density polyethylene. The first fiber component is fibrillated and the second fiber component is a twisted bundle comprised of multiple strands of a nonfibrillating monofilament. The synthetic fiber blend imparts improved reinforcement properties to the building materials to which they are added. In particular, the synthetic fiber blend when incorporated into a building material provides reduced permeability, increased fatigue strength, improved toughness, and reduced plastic shrinkage. The unique combination of the twisted second fiber component blended with the first fiber component provides improved mixability and uniform distribution of the synthetic fiber blend in cementitious materials.
    Type: Grant
    Filed: February 21, 2001
    Date of Patent: June 22, 2004
    Assignee: Forta Corporation
    Inventors: Jeffrey B. Lovett, Daniel T. Biddle, H. Charles Pitts, Jr.
  • Publication number: 20040050031
    Abstract: The invention relates to a yarn package provided on a yarn package holder, such as a tube, wherein the yarn is at least partly unstable, such that a variation in the yarn tension results in a rotational movement thereof, characterized in that, the position of the yarn in the yarn package is controlled by the direction of the rotation of the yarn.
    Type: Application
    Filed: October 10, 2003
    Publication date: March 18, 2004
    Inventors: Erik Gilbos, Christian Van Hautte, Emiel Rubbrecht
  • Patent number: 6634164
    Abstract: An apparatus for manufacturing stranded cables from strand elements with alternating twist directions (SZ stranding). One or more storage disks can be disposed between a guide that receives the strand elements and a stranding disk. The stranding disk and the storage disks can be driven in alternating directions. At least one torsion element drives the storage disks with a respective rotation speed that decreases with increasing distance between the storage disks and the stranding disk. The torsion element can be driven at several locations with a different rotation speed.
    Type: Grant
    Filed: November 2, 2001
    Date of Patent: October 21, 2003
    Assignee: KMS Kabelmaschinen und Systeme GmbH
    Inventors: Walter Moser, Günther Kirchknopf, Josef Stiller
  • Patent number: 6610176
    Abstract: A yarn is produced which consists substantially of twisting filaments which are wrapped sequentially upon each other helically upon the yarn in layers, wherein the helically wound filaments preferably are wound right to left and then left to right alternatively to balance the yarn, wherein optionally a glue is applied to one of the filaments to maximize the performance of the yarn in producing paper.
    Type: Grant
    Filed: August 9, 2001
    Date of Patent: August 26, 2003
    Assignee: Pascale Industries, Inc.
    Inventor: Gerald J. Mauretti
  • Patent number: 6546180
    Abstract: After a wide-band DCF is wound around a bobbin to form an optical fiber coil 32, the latter is removed from the bobbin and placed into a bundle state (the state where the increase in transmission loss in the wavelength band of 1.55 &mgr;m caused by distortions in winding is reduced by 0.1 dB/km or more) released from distortions in winding. A resin 42 is used as a coil-tidying member so as to secure the optical fiber coil 32 to a storage case 40 at four positions. Both ends of the optical fiber coil 32 are connected to pigtail fibers at fusion-splicing parts 44; respectively. Even when the storage case 40 is closed with a lid after the optical fiber coil 32 is secured to the storage case 40 with the resin 42, there remain interstices within the bundle of the optical fiber coil 32 and a space between the optical fiber coil 32 and the storage case 40. As a result, even when the optical fiber coil 32 in a bundle state is accommodated in the storage case 40, transmission loss and the like would not increase.
    Type: Grant
    Filed: February 2, 1999
    Date of Patent: April 8, 2003
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Yasushi Koyano, Eisuke Sasaoka, Shigeru Tanaka, Kohei Kobayashi, Masashi Onishi
  • Publication number: 20030024230
    Abstract: The invention comprises a multi-ribbed belt having a tensile cord. The tensile cord having areas of opposite twist along a length of a single cord. In particular, a tensile cord comprises S twist sections and Z twist sections. An S twist section is separated from a Z twist section by a node, thereby creating alternate S twist and Z twist sections along a length of a tensile cord. Therefore, the inventive belt comprises a belt having a tensile cord having a random distribution of S twist sections and Z twist sections along a length of the belt as well as across a width of the belt. This significantly reduces tracking force while using only a single cord in belt construction.
    Type: Application
    Filed: July 26, 2002
    Publication date: February 6, 2003
    Inventor: Paul S. Knutson
  • Patent number: 6458725
    Abstract: An airbag base fabric is formed of thermoplastic synthetic filament yarns, wherein the yarn strength of the filament yarn is 7.0 g/denier or more and the fineness of the filament yarn is 200-250 denier. The fabric is thin and lightweight, which is thus excellent in accommodation, and is effective in reducing the size and weight of an airbag module.
    Type: Grant
    Filed: November 18, 1999
    Date of Patent: October 1, 2002
    Assignee: Takata Corporation
    Inventors: Yasushi Masuda, Akira Kokeguchi, Ryosuke Nakanishi
  • Patent number: 6412263
    Abstract: A reinforcing steel cord for rubber products, such as steel belted radial tires or conveyor belts, is disclosed. This steel cord is improved in rubber penetration and ageing adhesive force relative to the rubber material. The steel cord is formed by twisting a plurality of brass coated external element wires around a flat and spirally twisted core, with the twisted direction of the core being the same as or opposite to that of the resulting steel cord. In the steel cord, the pitch of the twisted core is set to allow the core to be twisted 0.2 to 2 times within the pitch of the cord, thus preferably forming sufficient interspaces between the core and the external wires in addition to the interspaces between the external wires.
    Type: Grant
    Filed: June 2, 2000
    Date of Patent: July 2, 2002
    Assignee: Hongduk Steel Cord Co., Ltd.
    Inventors: Byung-Ho Lee, Seung-Ho Lim
  • Patent number: 6318504
    Abstract: A synthetic fiber rope having load-bearing aramide fiber strands laid together in parallel in concentric layers of strands and an intersheath with sheath surfaces adapted to the external contours of the adjacent layers of strands. By positively bonding the inner and outer layers of strands a higher torsional rigidity is achieved as well as a rope structure of the stranded rope which is less susceptible to twisting. Furthermore, the elastic intersheath between the layers of stands serves to protect the strands against abrasion and assists in transmitting torque within the rope over a large area.
    Type: Grant
    Filed: October 21, 1999
    Date of Patent: November 20, 2001
    Assignee: Inventio AG
    Inventor: Claudio De Angelis
  • Patent number: 5829241
    Abstract: A process and apparatus for making alternate S and Z twist plied yarn from individual singles yarns includes the steps of tensioning the singles yarns as they move in a path through the process, twisting the individual yarns in either an S or Z direction, snubbing the yarn to restrain ply twisting so the twist in the singles yarn can equalize itself, stopping the forward movement of the yarn, then bonding the ply-twisted yarns at a node while applying twist, stopping the twisting operation, then repeating the procedure while twisting in the opposite direction. The ply twisted yarn has a lower defect level of less than 2.5 defects per 100 inch length of yarn.
    Type: Grant
    Filed: February 2, 1996
    Date of Patent: November 3, 1998
    Assignee: E. I. duPont de Nemours and Company
    Inventors: Robert William McAllister, Steven Kikuo Shibata
  • Patent number: 5752496
    Abstract: A bow string having a plurality of parallel strands, comprising at least one first strand being twisted in a clockwise manner, and at least one second strand being twisted in a counter clockwise manner, wherein the amount of twists in the second strands are the same as that of the first strands, and wherein the number of first strands approximately equals the number of second strands.
    Type: Grant
    Filed: January 28, 1997
    Date of Patent: May 19, 1998
    Inventor: Mathew A. McPherson
  • Patent number: 5676123
    Abstract: A bow string having a plurality of parallel strands, comprising at least one first strand being twisted in a clockwise manner, and at least one second strand being twisted in a counter clockwise manner, wherein the amount of twists in the second strands are the same as that of the first strands, and wherein the number of first strands approximately equals the number of second strands.
    Type: Grant
    Filed: September 15, 1994
    Date of Patent: October 14, 1997
    Inventor: Mathew A. McPherson
  • Patent number: 5644909
    Abstract: An alternate twist plied yarn formed from a plurality of strands of singles yarn twisted in alternating directions in lengthwise intervals of first half-cycles of twist at a predetermined twist level followed by second half-cycles of twist at the same twist level with reversal nodes therebetween, the singles twisted yarns being ply-twisted together in alternating directions in lengthwise intervals of first half-cycles of ply-twist followed by second half-cycles of ply-twist, there being a bond formed adjacent each node wherein the first half-cycle of ply-twist is located within the bond and the second half-cycle of ply-twist originates at one end of the bond, the twist level in the singles twisted yarn is between 25% in the same direction and 60% in the opposite direction of the twist applied to the singles yarns before plying.
    Type: Grant
    Filed: September 10, 1996
    Date of Patent: July 8, 1997
    Assignee: E.I. Du Pont de Nemours and Company
    Inventors: Warren Francis Knoff, Robert William McAllister, Peter Popper, Steven Kikuo Shibata, Robert Edward Taylor, Paul Wesley Yngve
  • Patent number: 5603589
    Abstract: A method of manufacturing an anchor element for a soil anchor or rock anchor, rock bolt or the like, from a strand of twisted steel wire. The anchor element includes a central wire and outer wires arranged radially relative to the central wire. The anchor element has at least one expanded section obtained by spreading the individual wires. Spacer members are provided for fixing the individual wires in the spread-apart position. The central wire is laterally deflected when the individual wires of the strand are being spread and, by inserting a rod-shaped spacer element, the central wire is fixed in an out of center position together with at least one outer wire.
    Type: Grant
    Filed: September 8, 1995
    Date of Patent: February 18, 1997
    Assignee: Dyckerhoff & Widmann Aktiengesellschaft
    Inventors: Hans-Peter von Allmen, Reinhard Klockner, Engelbert Gott, Otmar Langwadt
  • Patent number: 5577376
    Abstract: A process and apparatus for making alternate S and Z twist plied yarn from individual singles yarns includes the steps of tensioning the singles yarns as they move in a path through the process, twisting the individual yarns in either an S or Z direction, snubbing the yarn to restrain ply twisting so the twist in the singles yarn can equalize itself, stopping the forward movement of the yarn, then bonding the ply-twisted yarns at a node while applying twist, stopping the twisting operation, then repeating the procedure while twisting in the opposite direction. The ply twisted yarn has a lower defect level of less than 2.5 defects per 100 inch length of yarn.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: November 26, 1996
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Robert W. McAllister, Steven K. Shibata
  • Patent number: 5557915
    Abstract: An alternate twist plied yarn formed from a plurality of strands of singles yarn twisted in alternating directions in lengthwise intervals of first half-cycles of twist at a predetermined twist level followed by second half-cycles of twist at the same twist level with reversal nodes therebetween, the singles twisted yarns being ply-twisted together in alternating directions in lengthwise intervals of first half-cycles of ply-twist followed by second half-cycles of ply-twist, there being a bond formed adjacent each node wherein the first half-cycle of ply-twist is located within the bond and the second half-cycle of ply-twist originates at one end of the bond, the twist level in the singles twisted yarn is between 25% in the same direction and 60% in the opposite direction of the twist applied to the singles yarns before plying.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: September 24, 1996
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Warren F. Knoff, Robert W. McAllister, Peter Popper, Steven K. Shibata, Robert E. Taylor, Paul W. Yngve
  • Patent number: 5531064
    Abstract: A loose tube optical fiber cable with SZ stranding in which the units receive two or more laminated multicase ribbons stranded toward a central member with the stranding direction reversed at specific intervals. These multicase ribbons are twisted in the same direction as the stranding of the tube units, and a reverse stranding angle of the tube units is selected to be a value within a specific scope.
    Type: Grant
    Filed: March 7, 1995
    Date of Patent: July 2, 1996
    Assignee: Fujikura Ltd.
    Inventors: Hiroyuki Sawano, Masayoshi Yamanaka, Yutaka Kurosawa, Matsuhiro Miyamoto
  • Patent number: 5521007
    Abstract: A fiber cord having a plurality of fiber filaments twisted together in a first direction to produce strand yarns with a primary twist and a first twist coefficient, with a plurality of the strand yarns being in turn aligned and twisted together in a second twist direction opposite to the first twist direction to produce a fiber cord with a final twist and a second twist coefficient. The second twist coefficient is between 4.0 and 7.0 and the ratio of the second twist coefficient to the first twist coefficient is at least 1.25.
    Type: Grant
    Filed: July 30, 1992
    Date of Patent: May 28, 1996
    Assignee: Mitsuboshi Belting Ltd.
    Inventor: Tomomitsu Kurokawa
  • Patent number: 5465566
    Abstract: A system for bonding alternate S and Z twist plied yarn. The system bonds the plied yarns as they move in a path through the process and permits balanced expansion of the yarn while preventing lateral movement out of the path. The bonding of the yarn strands while plied together, forms a bond characterized by a dense region of filaments adhesively joined together where one of the strands overlaps another strand, followed by a less dense region along the one strand where fewer filaments are adhesively joined, followed by another dense region.
    Type: Grant
    Filed: June 8, 1993
    Date of Patent: November 14, 1995
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Donald W. Edwards, Craig A. Jackson, Steven K. Shibata, Paul W. Yngve
  • Patent number: 5456697
    Abstract: A braided suture possesses a cable core which resists any tendency to protrude through the surrounding braid structure.
    Type: Grant
    Filed: August 23, 1993
    Date of Patent: October 10, 1995
    Assignee: United States Surgical Corporation
    Inventors: Michael P. Chesterfield, Ilya S. Koyfman, Donald S. Kaplan, Matthew E. Hermes
  • Patent number: 5436075
    Abstract: Composite flexible multilayer insulation systems (MLI) were evaluated for thermal performance and compared with currently used fibrous silica (baseline) insulation system. The systems described are multilayer insulations consisting of alternating layers of metal foil and scrim ceramic cloth or vacuum metallized polymeric films quilted together using ceramic thread. A silicon carbide thread for use in the quilting and the method of making it are also described. These systems are useful to provide lightweight thermal insulation for a variety of uses, particularly on the surface of aerospace vehicles subject to very high temperatures during flight.
    Type: Grant
    Filed: November 9, 1992
    Date of Patent: July 25, 1995
    Assignee: The United States of America as represented by the Administrator of National Aeronautics and Space Administration
    Inventor: Paul M. Sawko
  • Patent number: 5336562
    Abstract: The invention relates to a novel type of polyolefine yarns with good performance in the manufacture of rugs and carpets, made-up by admixing polypropylene filaments with polyethylene filaments, and by subjecting said filaments mixture to a temperature of from 125.degree. C. up to 130.degree. C., which substantially equals the melting temperature of the polyethylene filaments, whereby said polyethylene filaments become melted while the polypropylene filaments, with higher melting point, remain solid and stable, and with said melting of the polyethylene filaments constituting welding points for said polypropylene filaments, bulking and shaping the resulting yarn.
    Type: Grant
    Filed: August 5, 1992
    Date of Patent: August 9, 1994
    Assignee: Pavco S.A.
    Inventor: Miguel Forero
  • Patent number: 5307617
    Abstract: A reverse stranding apparatus for the reverse stranding of conductors. The apparatus comprises a stationary divider plate, a twisting plate rotatable in different directions, and a central element disposed between the parts, and peripheral tubes surrounding the central element, the central element and the peripheral tubes being pressed against each other at least during the twisting step of the conductors, and the conductors to be stranded being adapted to pass through at least the peripheral tubes. To allow high speeds of rotation, the peripheral tubes are connected substantially for their entire length to the central element by a substantially radial part.
    Type: Grant
    Filed: August 17, 1992
    Date of Patent: May 3, 1994
    Assignee: Nokia-Maillefer Holding S.A.
    Inventor: Raimo Karhu
  • Patent number: 5296292
    Abstract: An elongated cylindrical tensile article of one or more strands of monofilament core surrounded by porous polytetrafluoroethylene (PTFE) which may be optionally coated or die sized on the outer surface for smoothness and/or abrasion resistance. The core filaments thereof may optionally be coated with high-temperature resistant adhesive for increased adherence to the PTFE. The article is particularly useful for fly-casting lines for fishing. The density may be controlled to produce a floating or sinking flyline or portion thereof.
    Type: Grant
    Filed: September 4, 1990
    Date of Patent: March 22, 1994
    Assignee: W. L. Gore & Associates, Inc.
    Inventor: Leslie C. Butters
  • Patent number: 5268221
    Abstract: A rubber article having a fiber reinforcement embedded therein. The reinforcement comprises a cylindrically braided cord of an even number of twisted yarns of four or more, an equal number having an twist, i.e. twisted to the right, and a Z-twist, i.e. twisted to the left. The angle difference between a first twisting angle of a yarn and a final twisting angle of the cylindrically braided cord is set at less than 10.degree..
    Type: Grant
    Filed: March 24, 1992
    Date of Patent: December 7, 1993
    Assignee: Bando Chemical Industries, Ltd.
    Inventors: Yasuyuki Nakanishi, Susumu Onoe, Hiroshi Matsuoka
  • Patent number: 5242743
    Abstract: A rubber having fiber reinforcement embedded thereon. The reinforcement comprises a cylindrically braided cords of more than four and even numbered twisted yarns. Yarns are right twist oriented and left twist oriented and they are twisted in the reverse direction in an, S-twist and a Z-twist.
    Type: Grant
    Filed: February 20, 1991
    Date of Patent: September 7, 1993
    Assignee: Bando Chemical Industries, Ltd.
    Inventors: Yasuyuki Nakanishi, Susumu Onoe, Toru Kusakabe, Hiroshi Matsuoka
  • Patent number: 5237809
    Abstract: A method and apparatus for stranding with changing lay directions (SZ-stranding) utilizes an elongated cylindrical member which is driven with changing rotational sense on which the conductors are wrapped and supplied to a stranding disk at one end. The cylindrical member serves the purpose of stranding and is held under an axial tensile stress at its ends during the stranding process. The cylindrical member is also twisted to provide a torsional stress.
    Type: Grant
    Filed: April 27, 1992
    Date of Patent: August 24, 1993
    Assignee: Siemens Aktiengesellschaft
    Inventors: Ulrich Oestreich, Reiner Schneider
  • Patent number: 5214244
    Abstract: An underwater cable has a flexible, elongated core surrounded by a flexible, elongated jacket. A distributed jacket includes a helically displaced phase shifter to decouple the cable from strumming produced by shedding of von Karman vortex streets from the cable.
    Type: Grant
    Filed: December 6, 1991
    Date of Patent: May 25, 1993
    Assignee: Science Applications International Corporation
    Inventors: Thomas R. Cummings, Douglas E. Brown
  • Patent number: 5179827
    Abstract: An alternate S and Z twist plied yarn made from individual singles yarns. The apparatus twists the singles yarns as they move in a path through the process, twisting the individual yarns in either an S or Z direction. The bonding of the ply-twisted yarns at a node while applying twist forms a bond characterized by numerous individual spaced bond sites between individual filaments that are distributed throughout the bond.
    Type: Grant
    Filed: May 3, 1991
    Date of Patent: January 19, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Otis B. Tinsley, Paul W. Yngve
  • Patent number: 5147721
    Abstract: A glass matrix/ceramic fiber reinforcement composite is prepared from a yarn formed by spinning glass fiber and ceramic fibers lengths together, to form a bicomponent yarn. The yarn is weavable and spinnable, and accordingly may be prepared in fabric forms, or in windings, of predetermined shape. The precursor is melted by heating to the temperature of the melting point of glass, which fused the glass into a continuous matrix, surrounding the ceramic reinforcement.
    Type: Grant
    Filed: July 7, 1989
    Date of Patent: September 15, 1992
    Assignee: Hexcel Corporation
    Inventors: Kenneth S. Baron, Milton F. Custer, Andreas G. Hegedus
  • Patent number: 5134840
    Abstract: A randomly entangled, plied yarn having a first yarn strand and a second yarn strand wherein at least one of the first yarn strand or the second yarn strand is unidirectionally twisted in a first direction of twist, the plied yarn having spaced-apart spliced zones along its length defining therebetween lengths of unspliced yarn having a ply twist in the opposite direction of the twist of the component yarn strands along the entire length of the plied yarn.
    Type: Grant
    Filed: May 3, 1990
    Date of Patent: August 4, 1992
    Inventors: Kurt W. Niederer, Edward L. Hand, Edwin R. Grose
  • Patent number: 5012636
    Abstract: A process for making alternate S and Z twist plied yarn from individual singles yarns includes the steps of tensioning the singles yarns as they move in a path through the process, twisting the individual yarns in either an S or Z direction, stopping the forward movement of the yarn, then bonding the ply-twisted yarns at a node while applying twist, stopping the twisting operation, then repeating the procedure while twisting in the opposite direction.
    Type: Grant
    Filed: March 13, 1989
    Date of Patent: May 7, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Donald E. Hallam, Peter Popper, Harold F. Staunton, Paul W. Yngve
  • Patent number: 4977739
    Abstract: A composite yarn comprising at least two yarn bundles plied together in alternating S and Z composite directions of twist separated by composite nodes of zero twist. At least one of the yarn bundles is a multi-strand bundle comprising at least two yarn strands. The strands of the bundles are twisted and the strands of the multi-strand bundle are plied together in alternating S and Z bundle directions of twist separated by bundle nodes of zero twist. The composite nodes and the bundle nodes coincide and the composite direction of twist is opposite to said bundle direction of twist between nodes. A method of plying filaments to obtain the composite yarn and apparatus for doing so are also disclosed.
    Type: Grant
    Filed: June 26, 1989
    Date of Patent: December 18, 1990
    Assignee: Du Pont Canada Inc.
    Inventor: Douglas R. Buchanan
  • Patent number: 4870813
    Abstract: A ply-twisted crimped continuous filament yarn having at least 40 twist reversals per meter and particularly suited for freize style carpets and the process for making the yarn is disclosed.
    Type: Grant
    Filed: June 3, 1988
    Date of Patent: October 3, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Thomas L. Nelson
  • Patent number: 4790802
    Abstract: A power transmission belt having a load carrier in which a twisted cord of synthetic fiber such as polyester fiber or of inorganic fiber such as glass fiber is embedded. Said load carrier is made by final twisting a plurality of twisted yarn (one or plural single yarns first twisted) in the direction contrary to the first twisting direction. The first twisting angle should be in the range between 87.degree. and 93.degree. and the final twist multiplier should preferably be in the range between 400 and 1,600.
    Type: Grant
    Filed: September 11, 1987
    Date of Patent: December 13, 1988
    Assignee: Bando Chemical Industries, Ltd.
    Inventors: Susumu Onoe, Mutsuyuki Yamaguchi
  • Patent number: RE45243
    Abstract: The invention relates to a method for producing a towel, specifically a low twist towel, comprising the following steps: Z twisting a thick yarn and separately Z twisting a fine count yarn; unevenly S twisting the Z-twisted yarns to make the volume of the thick yarn more than that of the fine count; weaving the yarn to produce a fabric; processing the fabric with hot water to reduce inner tension in the yarn and make the fabric become fluffy. Fabric produced by this method can solve the dependency on PVA, reduce energy consumption and material consumption, and prevent water pollution. This method for producing a low twist towel is environmentally friendly, healthy, and energy saving.
    Type: Grant
    Filed: October 9, 2012
    Date of Patent: November 18, 2014
    Assignee: Loftex USA LLC
    Inventor: Hongxing Wang