Strand Finishing Or Developing Patents (Class 57/309)
  • Publication number: 20130247536
    Abstract: From a first aspect, a method is provided for forming a helix rope for a trawl comprising the steps of: a) situating upon a portion of a rope a bead of a substance being selected from a group consisting of: (i) a liquid substance; and (ii) a semi-liquid substance. From a second aspect, a helix rope (35) is provided for forming portions of a pelagic trawl, the helix rope comprising a braided sheath (398) formed of greater than sixteen strands (397), whereby drag is reduced. From a third aspect, a method is provided for forming a high strength synthetic rope useful for towing warps, trawler warps, yachting ropes, mooring lines, anchoring lines, oil derrick anchoring lines, seismic lines, paravane lines, and any other uses for rope, cable or chain.
    Type: Application
    Filed: May 24, 2013
    Publication date: September 26, 2013
    Inventors: Hjortur Erlendsson, Sherif Adham Safwat
  • Patent number: 7997055
    Abstract: Method for thermal treatment of a running yarn (14) on a multi-workstation twisting machine, each station having a device (1) for thermal treatment of the yarn, and a delivery system (2, 3) preceding or following such device (1). The yarn (14) passes through the device (1) substantially without tension, and after passing the downstream delivery system (3), is wound. The yarn (14) is loaded with a defined force by position-variable means (24, 25, 27). Position changes of such means caused by a change in the yarn tension under disruptive influences during the thermal treatment of the yarn (14) are used as a control variable for controlling at least one of the delivery systems (2, 3).
    Type: Grant
    Filed: July 18, 2007
    Date of Patent: August 16, 2011
    Assignee: Oerlikon Textile GmbH & Co KG
    Inventor: Siegfried Brenk
  • Publication number: 20110136601
    Abstract: A racket string 10 of the present invention includes a synthetic fiber. The cross section is flattened by heating, compressing, and deforming the string after it has been formed, and an indentation is made in any part of the string. The flattened string is wound in a substantially non-twisted state. A method for producing the racket string includes heating the string at a temperature of Tg (° C.) or more and Tm ?10 (° C.) or less, where Tg (° C.) represents a glass transition point and Tm (° C.) represents a melting point of a main synthetic fiber constituting the string, compressing and deforming the string between rollers 7a and 7b that are arranged with a predetermined clearance therebetween; and then cooling and winding up the string.
    Type: Application
    Filed: June 9, 2010
    Publication date: June 9, 2011
    Applicant: GOSEN CO., LTD.
    Inventors: Yasushi Hirata, Kei Kaieda, Yoshiyuki Ohara
  • Publication number: 20100222544
    Abstract: This invention seeks to provide a fiber formed of an aromatic polyazole that has a high molecular weight and is excellent in mechanical properties such as elastic modulus, strength, etc., and a process for the production thereof. This invention provides a fiber formed of a polyazole containing a recurring unit of the following formula (1), wherein Ar1 is a divalent aromatic group having 4 to 20 carbon atoms, Ar2 is a tetravalent aromatic group having 4 to 20 carbon atoms and each X is O, S or NH, and having a phosphorus atom content of 30 ppm or less, and a process for the production thereof.
    Type: Application
    Filed: November 2, 2006
    Publication date: September 2, 2010
    Applicant: Teijin Limited
    Inventors: Masayuki Chokai, Anton Peter De Weijer, Susumu Honda, Hiroaki Kuwahara, Dennis Wilbers
  • Publication number: 20080282664
    Abstract: A rope structure comprising a plurality of formed composite strands. Each of the formed composite strands comprises fiber material and matrix material. The fiber material within the matrix material is twisted. The shapes of the plurality of formed composite strands are predetermined to facilitate combination of the plurality of composite strands into the rope structure.
    Type: Application
    Filed: May 19, 2008
    Publication date: November 20, 2008
    Inventors: Chia-Te Chou, Liangfeng Sun
  • Patent number: 7356984
    Abstract: A device for treatment of a traveling yarn with a steam-creating medium includes a column of several chambers provided with yarn inlet- and yarn outlet-channels and arranged one over the other, of which one of the chambers is a steam treatment chamber provided with a steam inlet and a condensate outlet with respect to which mixing chambers are respectively operated upstream and downstream thereof, with each such mixing chamber respectively having an air inlet and a condensate outlet. The yarn inlet- and yarn outlet-channels have an opening cross section that, on the one hand, makes possible a pneumatic yarn threading-in and, on the other hand, controls the exchange of air and steam between the chambers such that a steam-air-mixture atmosphere sets in that substantially forecloses the entrance of air into the steam treatment chamber.
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: April 15, 2008
    Assignee: Saurer GmbH & Co. KG
    Inventor: Siegfried Brenk
  • Patent number: 6694720
    Abstract: An apparatus for forming a cotton/rayon blended yarn. The apparatus includes a supply of cotton fibers and a supply of rayon fibers. A blending operation line blends the cotton fibers and the rayon fibers. The fibers are then spun in an open end spinning turbine having a twist multiple of less than about 3.7 at a rotor speed of less than about 112,000 RPM. A roughing navel downstream from the open and spinning turbine distressing the surface of the cotton/rayon blended yarn to further improve the hand of yarn. The yarn is then knitted or woven into fabric and finished. The resulting fabric, and apparel made therefrom, has the advantage of having a particularly soft and luxurious hand, particularly compared to fabric knit from 100% cotton yarn.
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: February 24, 2004
    Assignee: Sara Lee Corporation
    Inventors: Sonny B. Driggars, Carroll D. Lineberry, Steve B. Brooks
  • Patent number: 6684617
    Abstract: In order to increase the cracking corrosion resistance of a wire under stress compressive stresses are introduced through surface treatment by brushing, on the apparent surface of the wire. A system and method are notably applied for the manufacture of wire-reinforced flexible pipes. The reinforcing wires are subjected to a surface treatment by brushing after setting the wires on the flexible pipe.
    Type: Grant
    Filed: November 19, 2001
    Date of Patent: February 3, 2004
    Assignee: Institut Francais du Petrole
    Inventors: Xavier Longaygue, Christian Boudou
  • Patent number: 6668535
    Abstract: The invention provides heat-resistant crimped yarn, of which the constituent heat-resistant high-functional fibers are prevented as much as possible from being deteriorated under heat in the process of producing the yarn. Not losing excellent properties of heat resistance and flame retardancy intrinsic to the heat-resistant high-functional fibers, the crimped yarn has a good elongation percentage in stretch, a good stretch modulus of elasticity and a good appearance, and it fluffs little and releases little dust. The heat-resistant crimped yarn comprises heat-resistant high-functional fibers, and is characterized in that it does not deteriorate under heat, and that its elongation percentage in stretch is at least 6%, its stretch modulus of elasticity is at least 40%, and its tenacity falls between 0.15 and 3.5 N/tex.
    Type: Grant
    Filed: October 3, 2001
    Date of Patent: December 30, 2003
    Assignee: Du Pont-Toray Co., Ltd.
    Inventors: Mitsuhiko Tanahashi, Kazuhiko Kosuge, Takeshi Hatano, Iori Nakabayashi
  • Patent number: 6631609
    Abstract: A method for producing a cable or cable element from individual elements is provided. The method comprises heating the individual elements before or during a stranding process until they are at least close to plastification and cooling the individual elements to a solidification temperature of a plastic. A cable or cable element comprising individual elements that are twisted together to form the cable is also disclosed. The individual elements are heated either before or during a stranding process until they are at least close to plastification, and are subsequently cooled to a solidification temperature of the plastic until they leave a stranding machine. A stranding device for the production of a cable or cable element from individual elements is also disclosed. The stranding device comprises a heating device which acts on the individual elements and a cooling device located downstream of the heating device in a direction of processing.
    Type: Grant
    Filed: May 28, 2002
    Date of Patent: October 14, 2003
    Assignee: Drahtseilerei Gustav Kocks GmbH & Co.
    Inventor: Wolfgang Scheunemann
  • Patent number: 6625970
    Abstract: An article of furniture is made from elongated polymer filaments which are attached and woven onto a frame forming woven panels. Subsequent to the weaving and attachment process, the completed article is placed in an oven to heat set the resulting woven material. The polymer filaments may be monofilaments or plural filaments which are twisted together and then heat set to prevent their untwisting during the subsequent weaving process. The heat setting of the polymer filaments is achieved by heating to about the softening temperature or above of the polymer material.
    Type: Grant
    Filed: January 31, 2002
    Date of Patent: September 30, 2003
    Assignee: Sun Isle Casual Furniture, LLC
    Inventor: Larry Schwartz
  • Patent number: 6623355
    Abstract: Methods and apparatus for chemical mechanical planarization of an article such as a semiconductor wafer use polishing slurries including a carbon dioxide solvent or a carbon dioxide-philic composition. A carbon dioxide cleaning solvent step and apparatus may also be employed.
    Type: Grant
    Filed: March 23, 2001
    Date of Patent: September 23, 2003
    Assignee: MiCell Technologies, Inc.
    Inventors: James B. McClain, Joseph M. DeSimone
  • Patent number: 6592716
    Abstract: Security fibers having enhanced antifalsification features are prepared by a process which comprises the steps of: i) braiding 5 to 30 denier fibers to form a twine; ii) dyeing the twine with a dye or pigment; iii) drying the dyed twine; and then iv) cutting the dried twine to give the security fibers in the form of cut fibers.
    Type: Grant
    Filed: September 1, 2000
    Date of Patent: July 15, 2003
    Assignee: Korea Security Printing and Minting Corporation
    Inventors: Jong-Kyu Kim, Yong-Hwan Park
  • Patent number: 6261673
    Abstract: The present invention relates to a coated cutting tool insert useful for grooving or severing steel components such as steel or stainless steel tubes and bars. The insert is characterized by WC—Co-based cemented carbide substrate having a highly W-alloyed Co-binder phase and a relatively thin coating including an inner layer of TiCxNyOz with columnar grains followed by a layer of fine grained &kgr;—Al2O3 and a top layer of TiN.
    Type: Grant
    Filed: July 8, 1999
    Date of Patent: July 17, 2001
    Assignee: Sandvik AB
    Inventors: Ingrid Reineck, Torbjörn Selinder, Anders Piirhonen, Gregor Kullander
  • Patent number: 6228483
    Abstract: A coated article for tribological applications, for example a cutting tool for machining titanium and its alloys. The densified substrate of the article is a cemented carbide, nitride, or carbonitride, or ceramic and may include cubic carbides. A composite coating is codeposited on the substrate to provide a wear surface including no cubic carbides to a depth at least sufficient to avoid exposure of cubic carbides to a workpiece during machining. The coating is a pore-free, dense, hard phase/cobalt composite applied by CVD or PVD, the hard phase including tungsten carbide, nitride, or carbonitride. The cutting tool thus possesses good shape retention at high machining speeds and provides wear-resistance and chemical inertness.
    Type: Grant
    Filed: January 18, 1994
    Date of Patent: May 8, 2001
    Assignee: Trustees of Boston University
    Inventor: Vinod K. Sarin
  • Patent number: 6026636
    Abstract: A yarn false twist texturing apparatus which includes a serially arranged heater, cooling device, and twisting unit. In order to collect and remove the oil vapors arising within the false twist zone, the cooling device is configured as an elongate hollow body, and the yarn is conveyed for cooling in contact with the inside wall of the hollow body. A vapor extraction system is provided which communicates with the interior of the body. In another embodiment, a tubular protective body is arranged between the heater and the cooling device, and the interior chamber of the tubular protective body encloses the yarn and is connected to an extraction device. The advancing yarn may be wetted with a cooling fluid at a location between the heater and the cooling device, to facilitate the volatilization of the oil constituents in the yarn as well as cool the yarn.
    Type: Grant
    Filed: May 22, 1998
    Date of Patent: February 22, 2000
    Assignee: Barmag AG
    Inventors: Hellmut Lorenz, Peter Dammann
  • Patent number: 5942318
    Abstract: There is provided a coated cutting insert particularly useful for finishing operations in milling of grey cast iron. The insert has a fine-grained WC-Co cemented carbide body and a coating of multiple layers of TiC.sub.x N.sub.y deposited at conditions aiming to minimize the decarburization of the cutting edge without any negative effects on the substrate. There is also disclosed a method of applying a TiC.sub.x N.sub.y layer by CVD technique on a cemented carbide cutting insert without eta phase formation and without etching of the binder phase.
    Type: Grant
    Filed: July 1, 1997
    Date of Patent: August 24, 1999
    Assignee: Sandvik AB
    Inventors: Staffan Soderberg, .ANG.sa Kutscher, Leif kesson
  • Patent number: 5897942
    Abstract: In order to improve the wear resistancy--including adherence behaviour, ductility and shearing strength--at a diamond coated multiphase body, an element enrichment is applied in controlled manner in the interphase of base body and diamond layer.
    Type: Grant
    Filed: April 20, 1995
    Date of Patent: April 27, 1999
    Assignee: Balzers Aktiengesellschaft
    Inventors: Johann Karner, Erich Bergmann, Mauro Pedrazzini, Ingrid Reineck, Mats E. Sjostrand
  • Patent number: 5794427
    Abstract: A process of making a low-shrinkage, air-textured yarn, in particular sewing yarn, of synthetic, pre-oriented polymer multifilaments, includes the steps of drawing multifilaments in the form of a single strand at a temperature of about 180.degree. to 230.degree. C. by a factor of 1.6 to 2.5, air-texturing the drawn strand at a rate of overfeed of 1.03 to 1.20 to form a single-strand raw yarn, feeding the raw yarn to a fluffing zone of predetermined length at a rate of overfeed of 1.003 to 1.025, winding the fluffy raw yarn at slightest possible tension, reeling off and twisting the wound raw yarn, and treating the twisted raw yarn at a temperature of 125.degree. to 135.degree. C. over 1 to 3 hours in a dyeing unit, and, optionally, dyeing the raw yarn. The process is equally applicable for making plied yarns.
    Type: Grant
    Filed: July 3, 1997
    Date of Patent: August 18, 1998
    Assignee: Madeira Garnfabrik Rudolf Schmidt KG
    Inventors: Franco Cavedon, Hartmut Ritter, Martin Lohe
  • Patent number: 5644906
    Abstract: A method is disclosed for increasing the dyeability of polyester yarn and comprises heating the partially oriented yarn to a temperature between its crystallization temperature and its melting point while preventing the partially oriented yarn from shrinking, and immediately thereafter draw texturizing the partially oriented yarn to a desired draw ratio and texturization.
    Type: Grant
    Filed: May 10, 1995
    Date of Patent: July 8, 1997
    Assignee: Wellman, Inc.
    Inventor: Charlie King
  • Patent number: 5466528
    Abstract: A chemical treating composition, treated glass-type surfaces and vinyl addition polymer compatible substrates with such treated surfaces are provided where the treating composition has at least five nonaqueous components. These components include in weight percent of the nonaqueous component the following: at least one starch in an amount from around 1 to around slightly greater than 50, at least one wax in an amount to have a ratio with the starch and a range of around 0.
    Type: Grant
    Filed: October 17, 1994
    Date of Patent: November 14, 1995
    Assignee: PPG Industries, Inc.
    Inventor: Mikhail M. Girgis
  • Patent number: 5457950
    Abstract: A spindle for manufacturing a yarn has a spindle body for receiving a fiber supply bobbin from which a fiber is removed radially outwardly to form a fiber balloon and guided to a centering point above the spindle body. A spindle rotor for rotating the spindle body has a central axis. A supply device for introducing a flowable medium into the space limited by the fiber balloon is provided. The supply device has an inlet line with an outlet opening. The inlet line has a section adjacent to the outlet opening extending at least directly upstream of the outlet opening coaxially or parallel to the central axis. At least a portion of the section is rotatable about the central axis and has a fiber guide tube comprising a first end that extends coaxially from the portion and a second end that extends radially from this portion.
    Type: Grant
    Filed: March 11, 1994
    Date of Patent: October 17, 1995
    Assignee: Palitex Project-Company GmbH
    Inventors: Ulrich Ballhausen, Karl J. Brockmanns, Ulrich Lossa
  • Patent number: 5398492
    Abstract: Industrial dust mop having a homogenous yarn composed of high melt staple fibers and low melt staple which has been heated to homogeneously melt the low melt fibers throughout the yarn to form a fused yarn product in the mop.
    Type: Grant
    Filed: April 16, 1993
    Date of Patent: March 21, 1995
    Assignee: Milliken Research Corporation
    Inventor: Manuel A. Thomas
  • Patent number: 5220778
    Abstract: A method for the production of untwisted yarns from at least two fibril bundles. Intermediate method steps, which are introduced between the main steps of the conventional production method for such yarns (Spinning, stretching and texturing), allows the receiprocal position of the individual fibril bundles resulting from the arrangement of the spinnerets to be retained through the process. A non-positively acting false twister for each individual fibril bundle, whose strength or thickness can be varied, also makes it possible to reproducibly vary the mixing of the fibrils of the individual bundles in their contact zones.
    Type: Grant
    Filed: June 22, 1992
    Date of Patent: June 22, 1993
    Assignee: Rieter Machine Works, Ltd.
    Inventors: Werner Flachmueller, Hans-Joach Weiss
  • Patent number: 4995230
    Abstract: A steam setting system for steam setting a plurality of bobbins reduced by a fine spinning frame in which a steam setting apparatus comprising at least a pair of independent steam setting mechanisms is provided on the way of a bobbin feeder line connecting a fine spinning frame with a winder.
    Type: Grant
    Filed: October 12, 1988
    Date of Patent: February 26, 1991
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventors: Shoichi Tone, Masaharu Kiriake
  • Patent number: 4763468
    Abstract: The present invention reveals a process for manufacturing a high strength woven fabric that is particularly suitable for use as a tire reinforcement which comprises:(a) drawing a polymeric yarn to a draw ratio that is 70% to 99% of the draw ratio that would fully draw the yarn to produce an optimally drawn yarn;(b) twisting at least two of said optimally drawn polymeric yarns into a cord;(c) weaving a plurality of said cords into a greige woven fabric; and(d) stretching and relaxing said greige woven fabric under conditions sufficient to reduce the denier of the cords in said fabric by 1% to 10%.
    Type: Grant
    Filed: November 3, 1986
    Date of Patent: August 16, 1988
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Donald L. Brown, James T. Weissert, Roop S. Bhakuni, Gregory S. Rogowski
  • Patent number: 4685284
    Abstract: A method of producing twisted yarn comprises precision doubling several single yarns in a precision assembly winder to form a precision package which is dyed or bleached. The yarn is thereupon twisted during withdrawal from the precision package.
    Type: Grant
    Filed: December 12, 1985
    Date of Patent: August 11, 1987
    Assignee: Maschinen Fabrik Scharer AG
    Inventors: Peter R. Philipp, Jean Weber
  • Patent number: 4660368
    Abstract: An installation includes a spinning machine, a winding machine, a bobbin transporting device transporting the bobbins from the spinning machine to the winding machine, and a tube or sleeve transporting device transporting tubes or sleeves from the winding machine to the spinning machine providing a circulation of wound and unwound tubes or sleeves, the bobbin transporting device including at least one automatic yarn steaming device.
    Type: Grant
    Filed: March 13, 1986
    Date of Patent: April 28, 1987
    Assignee: W. Schlafhorst & Co.
    Inventor: Wilhelm Kupper
  • Patent number: 4615167
    Abstract: A method and apparatus for forming a yarn or sewing thread from core and effect yarns. The effect yarn is drawn at no higher than a normal drawing ratio for material from which the effect yarn is made and the effect yarn is softened by sufficient heating, in order to prevent rupturing of the effect yarn during drawing. The core or effect yarn is passed through a wetting device to aid aspiration and entanglement of the core and effect yarns in a fluid jet device. The effect yarn is overfed to the jet device to aid in the formation of a highly entangled looped yarn which is subsequently set by a heated roller while contraction of the yarn is prevented. The core yarn can also be drawn at or below its normal drawing ratio in order to aid in developing thread tenacity and ensure an acceptable elongation at break after dyeing or subsequent wet processing.
    Type: Grant
    Filed: June 25, 1985
    Date of Patent: October 7, 1986
    Inventor: Neville G. Greenberg
  • Patent number: 4542619
    Abstract: This invention discloses a yarn, and method and apparatus for making it, composed of a core component having yarn strength wrapped clockwise and counter-clockwise by wrapper components, wherein the core has a sinuous configuration and contains a greater length per unit of yarn length than the wrapper components. Optionally, the core component may be a newly texturized multi-filament yarn, wrapped according to this invention before being subjected to significant tension, thereby preserving much of the bulk that would otherwise be lost in winding or other tensioning of the texturized core in unwrapped condition.
    Type: Grant
    Filed: November 21, 1983
    Date of Patent: September 24, 1985
    Assignee: Techniservice Division, Textured Yarn Company
    Inventor: Nathan G. Schwartz
  • Patent number: 4481996
    Abstract: In order to improve the fatigue resistance of a cable, particularly a rubber adherable cable for reinforcing rubber articles such as vehicle tires, substantially uniformly distributed residual compressive stress is induced in substantially the complete peripheric zone of the wires making up the cable. The stress may be induced by submitting lengths of the cable to a number of elementary bending--unbending operations in considerably different planes and simultaneously tensioning the cable.
    Type: Grant
    Filed: February 4, 1982
    Date of Patent: November 13, 1984
    Assignee: N. V. Bekaert S.A.
    Inventors: Marc De Bondt, Urbain D'Haene, Paul Dambre
  • Patent number: 4470252
    Abstract: Glass fiber strand is prepared from a process so that the strand can be bulked at higher processing speeds. The process involves drawing the glass fibers from molten glass, applying an aqueous treating composition to the fibers, gathering the treated glass fibers into one or more strands and collecting the glass fiber strands onto one or more packages, drying the packages, rewinding the packages onto a second, more supportive package, steaming one or more of the second packages and drying the steamed packages so that the package has a moisture content of around 1 to about 25 weight percent. The aqueous treating composition used to treat the glass fibers in forming has one or more starches, an aqueous soluble, emulsifiable or dispersible wax wherein the amount of wax in the aqueous treating composition is less than the amount of starch, a cationic lubricant and water.
    Type: Grant
    Filed: April 4, 1983
    Date of Patent: September 11, 1984
    Assignee: PPG Industries, Inc.
    Inventor: George L. Brodmann
  • Patent number: 4297837
    Abstract: A method and apparatus is provided for producing a synthetic multifilament yarn having appearance, bulk and hand characteristics of conventional spun yarns of staple fibers while retaining strength characteristics of continuous filament yarns. The multifilament yarn is air jet textured to form loops, bows, coils and the like in at least the surface filaments thereof and at least some of these loops, bows, coils and the like only in the surface filaments are parted while the interior or core filaments remain substantially intact to form a yarn having free filament or fiber ends projecting from a substantially continuous filament core. The interior or core filaments are shielded or protected from being parted by false twisting the yarn (without heat setting the twist therein) to provide a substantially closed form with the interior or core filaments surrounded by the surface filaments and by parting the surface filaments while the yarn has twist therein.
    Type: Grant
    Filed: December 5, 1979
    Date of Patent: November 3, 1981
    Assignee: Barmag Barmer Maschinenfabrik Aktiengesellschaft
    Inventors: Karl Bauer, Eberhard Krenzer
  • Patent number: 4246747
    Abstract: The present invention relates to a process and product for directly producing a latent heat-bulkable yarn from the same polymer composition in the same spinning process. The self-crimping yarn is produced from polyethylene terephthalate compositions which are melt spun at high speeds to form a plurality of spin oriented filaments. The filaments are divided in the spinning column into at least two groups and the two groups of filaments are subjected to different heat conditions, recombined, and taken up as a fully drawn yarn. The high spinning speed and differential heat treatment are selected to produce highly spin oriented yarn of relatively high spun birefringence with the conditions of spinning speed and heat treatment being controlled to produce a desired shrinkage differential between the two groups of filaments of up to 60 percent.
    Type: Grant
    Filed: January 2, 1979
    Date of Patent: January 27, 1981
    Assignee: Fiber Industries, Inc.
    Inventors: Joseph A. Plunkett, James R. Talbot
  • Patent number: 4209965
    Abstract: The present invention provides a process and apparatus for manufacturing yarn products comprised of an inner core of fibers and an outer layer of fibers. In the process, first fibers have a pre-twist imparted thereto to form a strand which becomes the inner core of the yarn and the pre-twist is retained by passing the yarn between two pinch points. While between the two pinch points, second fibers are juxtaposed to the strand and any untwisting tendency by the inner strand will tend to twist the outer layer of fibers. Optionally, the yarn may undergo a further twisting operation while between the two pinch points after the second fibers have been deposited.
    Type: Grant
    Filed: May 3, 1978
    Date of Patent: July 1, 1980
    Inventor: Emilian Bobkowicz
  • Patent number: 4176712
    Abstract: There is provided an improved heating apparatus of the multiple condensing-vapor substantially air-free type used for uniformly heating moving threadlines of yarn up to 350.degree. C. and which includes a pressurized boiler containing a vaporizable liquid, means for heating the liquid in the boiler to generate hot vapor, means for distributing the hot vapor to the inside of multiple plates where the vapor condenses and thereby heats threadlines of yarn separately moved in frictional contact witn an outer yarn-contacting surface of each hot plate, and possibly means for returning the condensate to the boiler, wherein the improvement comprises having a coating on the inside surface of each said hot plate, said coating having a contact angle with said vaporizable liquid of at least 90.degree..
    Type: Grant
    Filed: January 9, 1978
    Date of Patent: December 4, 1979
    Assignee: Fiber Industries, Inc.
    Inventors: Lee H. Knox, Malcolm P. Owens