With Fluid Jet Patents (Class 57/350)
  • Publication number: 20150082766
    Abstract: The invention relates to a slubbing machine for producing a rove (1) from a fiber web (2), wherein the slubbing machine has at least one spinning nozzle (3) with an inlet opening (4) for the fiber web (2), wherein the spinning nozzle (3) is assigned at least one air nozzle through which the air can be channeled into the spinning nozzle (3) in order to impart a protective rotation to the fiber web (2) within the spinning nozzle (3), wherein the spinning nozzle (3) has an outlet (5) through which the rove (1) can be drawn out of the spinning nozzle (3), and wherein the slubbing machine comprises at least one receiving device (28) arranged downstream of the spinning nozzle (3) in the transport direction of the rove (1), particularly in the form of a winding device (6) to receive the rove (1) leaving the spinning nozzle (3).
    Type: Application
    Filed: March 15, 2013
    Publication date: March 26, 2015
    Inventors: Gerd Stahlecker, Rudolf Härdi
  • Patent number: 8966873
    Abstract: A yarn-producing apparatus for an air spinning machine, which is used for producing a yarn from a fiber strand with the assistance of an air flow, has a spinning tip with an inlet opening surrounded by the outer surface of the spinning tip, in the area of which a yarn is able to be produced with the assistance of the air flow. The yarn-producing apparatus has an internal inset with a draw-off conduit adjacent to the inlet opening for the yarn and several air outlets branching off on the side from the draw-off conduit, such that an air flow introduced counter to the direction of spinning (S) in the draw-off conduit can escape in part through the air outlets and in part through the inlet opening. In addition, a spinning unit with a corresponding yarn-producing apparatus is provided.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: March 3, 2015
    Assignee: Maschinenfabrik Rieter AG
    Inventor: Markus Kübler
  • Publication number: 20140366503
    Abstract: The invention relates to a spinning nozzle for an air-jet spinning machine which is used for producing a thread (2) from a fiber sliver (3), wherein the spinning nozzle (1) has a base body (4) with an internal turbulence chamber (5), wherein the spinning nozzle (1) has an inlet opening (6) for the fiber sliver (3) which enters the turbulence chamber (5) in a transport direction when the air-jet spinning machine is operating, wherein a fiber guide channel (7) for guiding the fiber sliver (3) entering the inlet opening is provided between the inlet opening and the turbulence chamber (5), wherein the spinning nozzle (1) has a thread-forming element (8) which extends at least partially into the turbulence chamber (5) and has an inlet mouth (9) as well as an adjoining take-off channel (10) for the thread (2) in the transport direction, and wherein the spinning nozzle (1) has air nozzles (11) which are directed into the turbulence chamber (5) and which open out into the turbulence chamber (5) in the region of a wal
    Type: Application
    Filed: June 13, 2014
    Publication date: December 18, 2014
    Inventors: Christian Griesshammer, Petr Haska
  • Publication number: 20140283496
    Abstract: The invention relates to a spinning point (1) of a spinning machine, whereas the spinning point (1) includes a spinning unit (5), a drawing-off device (6) for the yarn (2) downstream of the spinning unit (5) in the direction of transport (T) and a yarn accumulator (7) downstream of the drawing-off device (6) for the intermediate accumulation of a section of yarn, whereas the yarn accumulator (7) is allocated a sensor system (8) for monitoring the filling level of the yarn accumulator (7), whereas the spinning point includes a spooling device (9) for the yarn (2) downstream of the yarn accumulator (7), along with a return unit (10), with the assistance of which an end of the yarn (11), which is found within the yarn accumulator (7) after a yarn break, is able to be returned in the area of the spinning point (1).
    Type: Application
    Filed: March 18, 2014
    Publication date: September 25, 2014
    Applicant: Maschinenfabrik Rieter AG
    Inventors: Gerd Stahlecker, Markus Kübler, Gernot Schäffler, Evzen Pilar, Javier-Orlando Ricaurte-Rubio
  • Publication number: 20140237985
    Abstract: The invention relates to a spinning unit of the air-jet spinning machine, which serves the purpose of producing a yarn (2) from a fiber composite (3), whereas the spinning unit (1) possesses a spinning nozzle (4) with a vortex chamber (6) featuring an inlet opening (5) for the fiber composite (3), whereas the spinning unit (1) features air jets (21) directed into the vortex chamber (6), which flow into the vortex chamber (6) in the area of a wall (7) surrounding the vortex chamber (6) and through which air jets, during operation of the spinning unit (1), compressed air can be introduced into the vortex chamber (6) in a given direction of rotation, in order to confer upon the fiber composite (3) a rotation in the specified direction of rotation, and whereas the air jets (21) are connected to a source of compressed air (9) with the assistance of at least one fluid connection (8).
    Type: Application
    Filed: February 27, 2014
    Publication date: August 28, 2014
    Applicant: Maschinenfabrik Rieter AG
    Inventor: Gernot Schäffler
  • Patent number: 8813467
    Abstract: A tire includes at least one structural element which includes at least one reinforcing element which includes at least one hybrid yarn, the at least one hybrid yarn including a plurality of filaments obtained from at least one first multifilament yarn having a first initial tangent modulus and at least one second multifilament yarn having a second initial tangent modulus, the first and the second initial tangent modulus being different from each other, each one of the first and the second multifilament yarn including a plurality of individual filaments, the individual filaments of each one of the first and the second multifilament yarns being at least partially intermixed with each other. The tire may be a high performance or ultra high performance tire, or a tire suitable for being employed in sporting contests such as track motor races, or a tire suitable for sports utility vehicles.
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: August 26, 2014
    Assignee: Pirelli Tyre, S.p.A.
    Inventors: Barbara Rampana, Diego Tirelli, Udo Kuhlmann, Chokri Cherif, Christian Paul, Refah Ahmet Torun, Olaf Diestel
  • Publication number: 20140116022
    Abstract: The invention relates to a yarn-producing apparatus (1) for an air spinning machine, which is used for producing a yarn (2) from a fiber strand (3) with the assistance of an air flow, whereas the yarn-producing apparatus (1) has a spinning tip (4) with an inlet opening (6) surrounded by the outer surface (5) of the spinning tip (4), in the area of which a yarn (2) is able to be produced with the assistance of the air flow. In accordance with the invention, it is suggested that the yarn-producing apparatus (1) have an internal inset (7) with a draw-off conduit (8) adjacent to the inlet opening (6) for the yarn (2) and several air outlets (9) branching off on the side from the draw-off conduit (8), such that an air flow introduced counter to the direction of spinning (S) in the draw-off conduit (8) can escape in part through the air outlets (9) and in part through the inlet opening (6). In addition, a spinning unit with a corresponding yarn-producing apparatus (1) is suggested.
    Type: Application
    Filed: October 29, 2013
    Publication date: May 1, 2014
    Applicant: Maschinenfabrik Rieter AG
    Inventor: Markus Kübler
  • Patent number: 8607540
    Abstract: A roving machine for producing a roving from a sliver has at least one spinning station that has a vortex chamber with an infeed opening for the sliver and a roving forming element in the form of a spindle extending at least partially into the vortex chamber. The vortex chamber is associated with at least one air nozzle via which air is guided into the vortex chamber, and wherein the spindle has a draw-off channel via which the roving is drawn out of the vortex chamber. In the region of the vortex chamber, the draw-off channel has an inlet port for the roving to be drawn out of the vortex chamber, wherein the inlet port has an inner diameter that lies between 4 mm and 12 mm, preferably between 6 mm and 8 mm.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: December 17, 2013
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Dorothee Betz, Simon Küppers
  • Publication number: 20130312236
    Abstract: A method for preparing high-grade and casual fabric with special leather feel using a corn-based fiber that comprises the steps of: 1) selecting 0.3-0.5 D/PF ultrafine corn-based SORONA fiber from DuPont (U.S.) and 0.2-0.4 D/PF long porous bright polyester yarns as raw materials; 2) compositing by air-jet texturing: having the above raw materials composited by low tension air-jet texturing in an air texturing machine, with the tension force controlled in the range of 4.5-6.0 cN, so as to form ATY yarns with a denier number of 120-180 D; 3) weaving, which includes yarn sizing, preliminary drying, oil applying and plain weaving; 4) dyeing and finishing, which include treating a fabric by pre-treating, presetting, splitting and alkali detaching, water washing and dehydrating, dyeing, water repellent treatment, instant ultrahigh temperature treatment, and one-sided lustering.
    Type: Application
    Filed: October 28, 2011
    Publication date: November 28, 2013
    Applicant: DANYANG DANQI YUYUE TEXTILE COMPANY LIMITED
    Inventors: Junyan Zhang, Huirong Lin, Pei Zhang
  • Patent number: 8499539
    Abstract: A process for the production of a yarn is disclosed, the process comprising providing a bundle comprising continuous filaments of a thermoplastic polymer, contacting the bundle with a sliver comprising fibers of a heat resistant material to form a mixed bundle, and applying a gas jet to the mixed bundle to distribute the fibers of the heat resistant material in the bundle. Also disclosed are yarns comprising filaments of a thermoplastic polymer and fibers of a heat resistant material, wherein the fibers are distributed between and among the filaments. Preferably, the heat resistant material is a non-thermoplastic polymer, especially an aramid. Yarns according to the invention find use in technical fabrics especially transmission belts.
    Type: Grant
    Filed: October 21, 2010
    Date of Patent: August 6, 2013
    Assignee: Heathcoat Fabrics Limited
    Inventor: Richard Crane
  • Patent number: 8464510
    Abstract: An air spinning device has a nozzle body and a hollow spindle with a spindle tip and a longitudinal axis, wherein the spindle tip protrudes into the nozzle body. An outlet channel having a ring-shaped cross-sectional area is formed between an outside surface of the spindle tip and an inside surface of the nozzle body. The gap width at a certain location of the outlet channel normal to the longitudinal axis of the spindle is constant over the circumference of the spindle. The outside surface of the spindle tip and/or the inside surface of the nozzle body is/are shaped in such a way that at least two constrictions are formed in the outlet channel in its course in the direction of the longitudinal axis of the spindle, wherein the outlet channel has a ring-shaped cross-sectional area at each of these constrictions smaller than the ring-shaped cross-sectional area of the outlet channel upstream and downstream from each of these constrictions.
    Type: Grant
    Filed: July 9, 2010
    Date of Patent: June 18, 2013
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Petr Haska, Robert Mikyska, Christian Griesshammer
  • Publication number: 20130042593
    Abstract: A tire includes at least one structural element which includes at least one reinforcing element which includes at least one hybrid yarn, the at least one hybrid yarn including a plurality of filaments obtained from at least one first multifilament yarn having a first initial tangent modulus and at least one second multifilament yarn having a second initial tangent modulus, the first and the second initial tangent modulus being different from each other, each one of the first and the second multifilament yarn including a plurality of individual filaments, the individual filaments of each one of the first and the second multifilament yarns being at least partially intermixed with each other. The tire may be a high performance or ultra high performance tire, or a tire suitable for being employed in sporting contests such as track motor races, or a tire suitable for sports utility vehicles.
    Type: Application
    Filed: October 19, 2012
    Publication date: February 21, 2013
    Inventors: Barbara RAMPANA, Diego TIRELLI, Udo KUHLMANN, Chokri CHERIF, Christian PAUL, Refah Ahmet TORUN, Olaf DIESTEL
  • Publication number: 20120321888
    Abstract: A spliced fiber tow (40) having a uniform density along its entire length is provided. The spliced fiber tow is manufactured by rarefying the ends (22, 32) of the two fiber tow segments to be joined, aligning the rarefied regions (26, 36) and then applying pressurized gas to entangle the filaments in the rarefied regions. An apparatus (50) for forming the spliced fiber tow includes a pair of rarefying blades (86, 92) and an entanglement element (58).
    Type: Application
    Filed: February 24, 2011
    Publication date: December 20, 2012
    Applicant: ZOLTEK COMPANIES, INC.
    Inventors: Zsolt Rumy, Gabor Kovacs
  • Publication number: 20120192541
    Abstract: A component for an air jet spinning arrangement, in particular a spindle point, comprises a yarn withdrawal channel having an entry opening for drawing a yarn out of a vortex chamber of the air jet spinning arrangement. The component comprises at least one air outlet opening connected to the yarn withdrawal channel for discharging air from the yarn withdrawal channel during a piecing process. The component may comprise an injector channel for feeding back a yarn end back counter to the withdrawal direction during a piecing process. The injector channel, which is connectable to a compressed air source, can be connected by means of an opening to the yarn withdrawal channel and be positioned opposite the entry opening of the yarn withdrawal channel. The air outlet opening can be connected to the yarn withdrawal channel between the entry opening of the yarn withdrawal channel and the mouth of the injector channel.
    Type: Application
    Filed: June 23, 2010
    Publication date: August 2, 2012
    Applicant: MASCHINENFABRIK RIETER AG
    Inventors: Peter Artzt, Kurt Ziegler, Heinz Müller, Uwe Heitmann, Jörg Hehl
  • Patent number: 8190328
    Abstract: An electropneumatic control arrangement for an automatic vehicle level control system, particularly of a commercial vehicle, includes at least; a solenoid valve unit having at least two electropneumatic solenoid valves, a compressed air inlet for infeeding compressed air, at least one compressed air connection for at least one air bellows and electrical control inputs, and an electronic control unit for actuating the solenoid valve unit. The electronic control unit comprises control outputs for electrically connecting to the control inputs of the solenoid valve unit. A plug connector is configured on the housing of the solenoid valve unit, in which the electrical control inputs are disposed, and a plug connector is provided on the housing of the electronic control unit, in which the control outputs are disposed. The plug connectors are mechanically plugged into each other.
    Type: Grant
    Filed: May 26, 2009
    Date of Patent: May 29, 2012
    Assignee: WABCO GmbH
    Inventors: Ingo Jovers, Berend Kleen, Johann Lucas, Frauke Rathjen, Andreas Rutsch, Andreas Schwarzer, Thomas Stellmacher
  • Publication number: 20110173945
    Abstract: An airjet spinning unit comprises a spindle-shaped component. The spindle-shaped component comprises a yarn withdrawal channel and is movable along said yarn withdrawal channel. The airjet spinning unit comprises at least one magnet for holding the spindle-shaped component in its operating position.
    Type: Application
    Filed: September 11, 2009
    Publication date: July 21, 2011
    Inventor: Peter Schweier
  • Patent number: 7681390
    Abstract: A spindle of an airjet spinning machine for guiding back the free yarn end after an interruption in a spinning process is disclosed. The spindle contains an injector duct in the immediate vicinity of the spindle orifice. To guide the free yarn end back after an interruption, compressed air is admitted through the injector duct and generates a suction action at the spindle end. After the yarn end has been guided back level with the entrance of the injector duct the yarn end is blown out of the spindle orifice by the compressed air.
    Type: Grant
    Filed: July 15, 2005
    Date of Patent: March 23, 2010
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Olivier Wust, Herbert Stalder
  • Patent number: 7661259
    Abstract: The invention relates to a slubbing machine, the use of a twist application means, and a method for the manufacture of a roving yarn (9). The roving yarn (9) is manufactured according to the invention from a fiber assembly (3), which undergoes a true twist application (rotation) by mean of one or more air flows.
    Type: Grant
    Filed: July 16, 2004
    Date of Patent: February 16, 2010
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Christian Griesshammer, Herbert Stalder
  • Patent number: 7647760
    Abstract: A drawing frame-slubbing machine combination for manufacturing a roving yarn from a fiber assembly is disclosed. The drawing frame-slubbing machine combination includes a drawing frame for doubling and stretching a fiber assembly into a drafter sliver and a slubbing machine with a twist application component configured to apply a true twist to the drafter sliver by one or more air flows.
    Type: Grant
    Filed: July 6, 2004
    Date of Patent: January 19, 2010
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Christian Griesshammer, Herbert Stalder
  • Patent number: 7628005
    Abstract: An air jet spinning machine for producing spun threads from staple fiber strands includes a number of spinning positions, to each of which compressed air nozzles are arranged for the purpose of generating the spinning twist. A joint compressed air regulator is connected upstream of the spinning positions, which regulator includes a pressure sensor and a regulating device. The compressed air regulator is set at a reference pressure, which corresponds to the unregulated static pressure prevailing when all spinning positions are in operation. In the case of a change in the static pressure, the compressed air regulator re-adjusts to the reference pressure.
    Type: Grant
    Filed: October 18, 2005
    Date of Patent: December 8, 2009
    Assignee: Maschinenfabrik Rieter AG
    Inventor: Gernot Schaeffler
  • Patent number: 7581376
    Abstract: The present invention relates to a novel spun yarn, and a method and apparatus for the manufacture thereof.
    Type: Grant
    Filed: February 24, 2005
    Date of Patent: September 1, 2009
    Assignee: E.I. du Pont de Nemours and Company
    Inventor: Glen E. Simmonds
  • Patent number: 7516606
    Abstract: A process is provided for optimizing the production performance of a spinning machine. Each individual spinning position is separately monitored in relation to the number of end breaks and is adjusted to an optimal production speed. When this process is applied to an air jet spinning machine, the compressed air fed to the spinning positions is adjusted depending on the respective production speed.
    Type: Grant
    Filed: October 28, 2005
    Date of Patent: April 14, 2009
    Assignee: Maschinenfabrik Rieter AG
    Inventor: Gernot Schaeffler
  • Patent number: 7493749
    Abstract: A spinning position for spinning yard from a fiber structure including a fiber guidance element is disclosed. The fiber guidance element includes a fiber guiding surface having a deflection point located in the interior of the fiber guidance element. The input direction of a fiber structure into the fiber guidance element forms an angle of inclination ? with the fiber guiding surface at the deflection point. The splaying of the outer fibers of the fiber structure is increased and the quality of the yarn is thereby increased. The jamming of the fiber elements lying parallel to the direction of introduction may also be avoided.
    Type: Grant
    Filed: July 6, 2004
    Date of Patent: February 24, 2009
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Herbert Stalder, Kurt Ziegler, Peter Artzt, Heinz Müller
  • Publication number: 20090031693
    Abstract: The invention relates to an entanglement nozzle and to a method for producing fine knotted yarn with highly regular knots by means of air jets comprising a yarn treatment channel. According to said method, air is blown transversally to the yarn treatment channel. Said blown air forms a respective double swirl both in the yarn transport direction and against the yarn transport direction for creating the knots. According to the invention, upon entry into the yarn treatment channel, the blown air is converted into two intense, stationary eddy currents that are not disrupted by filament bundles, in an air swirling chamber that only extends for a short distance in the longitudinal direction of the yarn channel. The regularity of the knots can be significantly improved, despite the tiny dimensions of the air swirling chamber, which projects beyond the longitudinal wall of the yarn channel for a maximum 0.5 mm or for 5% to 22% of the width (B) of said channel.
    Type: Application
    Filed: March 16, 2006
    Publication date: February 5, 2009
    Inventor: Christian Simmen
  • Patent number: 7464529
    Abstract: A process and an arrangement for re-starting a previously interrupted spinning process in a spinning arrangement is provided. The arrangement includes a drafting unit which can be shut down and also an airjet unit including a vacuum chamber. For the purpose of removing an initially inhomogeneous fiber stream, a staple fiber strand, delivered by the re-operating drafting unit, is temporarily suctioned as waste via a deflecting device after it has left the drafting unit. Only then, when a homogeneous fiber stream has formed, is the staple fiber strand joined with a thread which is transported through the airjet unit. The inhomogeneous fiber stream is removed with the aid of the low pressure in the vacuum chamber.
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: December 16, 2008
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Gerd Stahlecker, Gernot Schaeffler, Peter Schweier
  • Publication number: 20080190089
    Abstract: An airjet spinning arrangement includes a fiber feed channel, which runs into a vortex chamber, and a fiber withdrawal channel, which exits out of the vortex chamber. The fiber withdrawal channel is arranged in a spindle-shaped component, which can be moved away from the fiber feed channel by a moving device. In order to clean the area of the entry opening of the thread withdrawal channel, a cleaning channel is provided, which is directed against the spindle-shaped component and is connected to a pressurized air source. The cleaning channel runs into a ring channel, which surrounds the spindle-shaped component. A first exit opening of this ring channel is designed so that it forms a ring opening surrounding the spindle-shaped component and is directed against the spindle shaped component when the spindle-shaped component is moved away from the fiber feed channel.
    Type: Application
    Filed: September 7, 2005
    Publication date: August 14, 2008
    Inventors: Gerd Stahlecker, Gernot Schaeffler, Peter Schweier
  • Publication number: 20080190090
    Abstract: An air jet spinning machine for producing spun threads from staple fiber strands includes a number of spinning positions, to each of which compressed air nozzles are arranged for the purpose of generating the spinning twist. A joint compressed air regulator is connected upstream of the spinning positions, which regulator includes a pressure sensor and a regulating device. The compressed air regulator is set at a reference pressure, which corresponds to the unregulated static pressure prevailing when all spinning positions are in operation. In the case of a change in the static pressure, the compressed air regulator re-adjusts to the reference pressure.
    Type: Application
    Filed: October 18, 2005
    Publication date: August 14, 2008
    Applicant: Maschinefabrik Rieter AG
    Inventor: Gernot Schaeffler
  • Patent number: 7386976
    Abstract: A spinning device for producing a yarn by a circulating air flow, comprising a hollow spinning cone arranged in a spinning housing and rotatably mounted about a central longitudinal axis and a nozzle block which can be loaded with compressed air to generate the circulating air flow. The spinning cone (19) is mounted via a bearing arrangement (30) in the rear housing part (15) such that the installation angle position of the spinning cone (19) can be adjusted selectively inside the air spinning device (5).
    Type: Grant
    Filed: July 21, 2006
    Date of Patent: June 17, 2008
    Assignee: Oerlikon Textile GmbH & Co. KG
    Inventor: Thomas Weide
  • Patent number: 7328569
    Abstract: An arrangement for producing a spun thread includes a drafting unit having a delivery roller pair and an airjet assembly arranged downstream thereof. In the airjet assembly, a vortex chamber with an air evacuation channel is provided. Furthermore, at least one cleaning channel is provided, which is arranged with a suction opening to the delivery roller pair. This cleaning channel is connected by a mouthpiece to the air evacuation channel. A compressed air opening of an injector channel is located in the area of the mouthpiece. The injector channel increasing the low pressure of the air evacuation channel when required.
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: February 12, 2008
    Assignee: Maschinenfabrik Rieter Ag
    Inventor: Peter Schweier
  • Patent number: 7313907
    Abstract: The present invention relates to equipment/apparatus, and the relative method/process, for the treatment of synthetic filaments, in particular for drawing said filaments, comprising at least two nozzles each provided with a main passage, through which said yarns pass, having a section variable between an inlet portion and an outlet portion and into which at least one supply channel opens to supply a fluid according to a preferential direction. Advantageously, the nozzles are provided in line and the sections of the main passage of the second nozzle have an area at least 3% larger than the corresponding sections of the main passage of the first nozzle.
    Type: Grant
    Filed: July 26, 2005
    Date of Patent: January 1, 2008
    Assignee: Fare' S.p.A.
    Inventor: Rosaldo Fare′
  • Patent number: 7299615
    Abstract: A method and apparatus for twisting two or more strands of yarn together in accordance with a pre-selected and changeable pattern so as to obtain twisted yarn with a selected twist level extending for a selected length of the yarn and other selected twist levels and/or twist directions extending for various other lengths of the yarn so that a package of finished yarn has a variable twist pattern which is reproducible and changeable. The yarn twisting apparatus has a drive for pulling the yarn through the twist inserting apparatus, and controllable fluid twisting devices for twisting the yarn together. A programmable controller controls ratios of the speeds at which the product package drive is operated and pressures or other parameters of fluid jets effecting fluid twisting of the yarn. The programmable controller can also vary the time that each selected ratio is maintained.
    Type: Grant
    Filed: June 17, 2005
    Date of Patent: November 27, 2007
    Assignee: Mannington Mills, Inc.
    Inventor: Brandon S. Kersey
  • Patent number: 7281366
    Abstract: An arrangement for producing a spun thread from a staple sliver including a drafting unit and an air jet aggregate arranged downstream thereof. A vortex chamber with an air evacuation channel is located in the air jet aggregate. A cleaning channel is arranged to the delivery roller pair of the drafting unit, which cleaning channel is connected, together with the air evacuation channel to a joint vacuum source. The cleaning channel runs preferably into the air evacuation channel in the inside of the air jet aggregate. The cleaning channel is preferably aligned against the pressure roller of the delivery roller pair. Further suction openings can be additionally arranged to the bottom rollers of the drafting unit, which suction openings are also connected to the joint vacuum source.
    Type: Grant
    Filed: February 14, 2004
    Date of Patent: October 16, 2007
    Assignee: Maschinenfabrik Rieter AG
    Inventor: Peter Schweier
  • Patent number: 7269936
    Abstract: It is an object of the present invention to provide a spinning device that detects early that fibers F have been accumulated in an air exhausting space 55 to prevent a defect (weak yarn) in a spun yarn. A spinning device in accordance with the present invention includes a pneumatic spinning nozzle 19, a whirling current generating chamber 25 in which fibers are twisted using a whirling air current generated by the pneumatic spinning nozzle, an air exhausting space 55 that is in communication with the whirling current generating chamber 25, a negative pressure source that sucks air from the air exhausting space 55, and a pressure sensor 63 that detects a pressure in the air exhausting space 55. When the pressure detected by the pressure sensor 63 during a spinning operation performed by the pneumatic spinning nozzle 19 rises to at least a predetermined value, the unit controller 32 performs control such that the spinning operation is stopped. The unit controller 32 further lights an alarm lamp 71.
    Type: Grant
    Filed: October 7, 2005
    Date of Patent: September 18, 2007
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventors: Atsushi Yamamoto, Tomoaki Takahashi, Masaki Oka
  • Patent number: 7104040
    Abstract: Device for reducing the fluff of a yarn comprising a longitudinal duct for the passage of the yarn, and ducts for the injection of air, tangential to the yarn, forming a vortex in accordance with the yarn twist, without the interposition of deviation and control means for generating a balloon.
    Type: Grant
    Filed: April 19, 2004
    Date of Patent: September 12, 2006
    Assignee: Savio Macchine Tessili S.p.A.
    Inventors: Luciano Bertoli, Giovanni Gardin, Guido Belforte, Terenziano Raparelli, Francantonio Testore, Vladimir Viktorov, Alexandre Ivanov, Andrea Trivella, Matteo Martinelli
  • Patent number: 7080502
    Abstract: An arrangement for manufacturing a spun thread from a staple fiber mass includes a feed channel having an outlet opening for feeding the fiber mass, and a yarn withdrawal channel having an inlet opening. In order to generate a rotating current around the entry opening of the yarn withdrawal channel, a vortex chamber is provided with compressed air nozzles. An air evacuation duct surrounds, essentially ring-like, a stationary, spindle-shaped component which forms the yarn withdrawal channel. The feed channel extends in a meandering manner and includes fiber guiding surfaces, which are designed in the form of deflecting edges, between which the staple fiber mass is without support.
    Type: Grant
    Filed: December 17, 2003
    Date of Patent: July 25, 2006
    Assignee: Maschinenfabrik Rieter AG
    Inventor: Gerd Stahlecker
  • Patent number: 7059110
    Abstract: A device for the manufacture of a spun thread from a fiber sliver includes a fiber conveying channel with a fiber guidance surface. A yarn guidance channel includes an inlet mouth aperture disposed such that the fiber guidance surface guides fibers to the inlet mouth aperture. A fluid generating device creates eddy currents around the inlet mouth aperture to incorporate individual fibers into an end of a yarn being formed in the yarn guidance channel. The fiber guidance surface includes a fiber delivery edge having a shape and disposed relative to the inlet mouth aperture such that the fibers are guided over the delivery edge and conveyed to the inlet mouth aperture in an aligned generally flat planar formation.
    Type: Grant
    Filed: September 19, 2001
    Date of Patent: June 13, 2006
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Peter Anderegg, Herbert Stalder
  • Patent number: 7043893
    Abstract: To manufacture a spun yarn from a loose fiber structure, devices are used in which a swirl chamber is provided between a fiber delivery channel and a yarn extraction channel. A fluid is blown into the swirl chamber. This device exhibits in the swirl chamber a guide surface, which delimits the swirl chamber downstream for the purpose of guiding fibers or fiber sectors that are swirling in the swirl chamber, the surface extending in collar fashion around the inlet aperture of the yarn extraction channel. The guide surface may form an angle of at least 30° with the axis of the yarn extraction channel in the yarn extraction direction, and outer areas of this guide surface are at a distance interval from the inlet aperture of the yarn extraction channel that corresponds to at least one tenth of the effective staple length of the fibers that are to be processed.
    Type: Grant
    Filed: August 5, 2002
    Date of Patent: May 16, 2006
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Herbert Stalder, Peter Anderegg
  • Patent number: 7024848
    Abstract: The application relates to a device for air spinning, i.e., for the manufacture of a spun yarn from a sliver. The device contains in particular a fiber guide element, a fiber conveying channel, and an eddy chamber housing attached to the fiber guide element. The eddy chamber housing contains in its turn a spindle with a yarn guide channel arranged at a distance interval from the fiber guide element. In addition, the eddy chamber housing contains a fluid device with at least one jet nozzle for the production of an eddy current about an inlet aperture mouth of the yarn guide channel. The fiber conveying channel exhibits a tunnel cladding, which is dimensioned in such a way that at the end of the fiber conveying channel a step to the eddy chamber housing is formed.
    Type: Grant
    Filed: March 19, 2003
    Date of Patent: April 11, 2006
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Herbert Stalder, Olivier Wüst
  • Patent number: 7020940
    Abstract: There is disclosed a method of texturing yarn products wherein the yarn product is passed along a predetermined yarn path through a liquid jet device applying a force to the yarn transversely to the axis thereof, comprising directing the liquid as it passes through the liquid jet device past an air inlet to the liquid jet device to entrain air therein.
    Type: Grant
    Filed: October 29, 2001
    Date of Patent: April 4, 2006
    Assignee: The University of Manchester
    Inventor: Peter William Foster
  • Patent number: 6928803
    Abstract: The invention relates to a device for the production of a spun thread from a staple fiber strand by means of air spin method. The fiber guiding element according to the invention includes a fiber conveying channel with a fiber guiding surface, whereby the fiber guiding surface ends at a fiber presenting edge and leads the fibers of the staple strand in the form of an essentially flat arrangement lying next to each other. The fiber-guiding surface is configured in such a manner that it includes a diverting point which causes a deviation of the staple fiber strand, where the deviation is being provided in such a manner that the free fiber ends of the fibers within the staple fiber protrude from the staple fiber strand.
    Type: Grant
    Filed: February 11, 2003
    Date of Patent: August 16, 2005
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Herbert Stalder, Peter Anderegg
  • Patent number: 6880319
    Abstract: The present invention relates to cut resistant yarns. More particularly, it relates to a process of making a cut resistant yarn comprising a plurality of cut resistant filaments and at least one elastomeric filament, as well as fabrics and articles such as gloves, comprising such cut resistant yarns.
    Type: Grant
    Filed: October 29, 2003
    Date of Patent: April 19, 2005
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Reiyao Zhu
  • Patent number: 6860095
    Abstract: An internal torque balancing method of short fiber yarns related to the art of textile and the manufacturing apparatus thereof. The present invention proposes a completely new mechanical processing method of single torque-free yarns, and applies it into the process of ring spinning. Said method accomplishes a machine and a possibility of processing single torque-free yarns within one processing step by simple improvement on the existing ring spinning machine. Said technique is applicable to the production of all types of short fiber materials, and can overcome the maximum bundle yarn count of Ne limit of the torque-free yarns processed by the existing physical balancing technique. Meanwhile, said technique can process the yarns with low twist, which is unable to be processed normally by the conventional ring spinning machine. The torque-free singles ring spinning machine has good mechanical behavior, good handle, and evenness without residual torque.
    Type: Grant
    Filed: November 8, 2002
    Date of Patent: March 1, 2005
    Assignee: The Hong Kong Polytechnic University
    Inventors: Xiaoming Tao, Bingang Xu
  • Patent number: 6792744
    Abstract: A spinning device for producing a spun yarn by a circulating air flow in a housing has an adjustment device (17) for controlling the angular position of the fiber ends wrapped around a spindle head, and in turn, the angular position of the fibers wrapped around the produced yarn, by adjusting a linear component of an air flow into the spinning device as a function of the yarn withdrawal speed, whereby a yarn is produced of a required yarn strength even during a spinning start phase in the process of making the spun yarn.
    Type: Grant
    Filed: January 16, 2003
    Date of Patent: September 21, 2004
    Assignee: W. Schlafhorst AG & Co.
    Inventors: Helmut Feuerlohn, Thomas Weide
  • Patent number: 6789382
    Abstract: An apparatus for producing yarn spun from a loose fibre array using a vortex flow includes a fibre supply duct having an outlet opening. A vortex chamber in communication with the outlet opening is also provided. A yarn take-off duct is present with an inlet opening in communication with the vortex chamber. The vortex chamber is also in communication with an exhaust duct. A wall that defines at least a portion of the vortex chamber is present and has an opening disposed therethrough allowing for communication between the exhaust duct and the vortex chamber.
    Type: Grant
    Filed: July 24, 2002
    Date of Patent: September 14, 2004
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Herbert Stalder, Peter Anderegg
  • Patent number: 6782685
    Abstract: An apparatus and method for producing a core spun yarn by means of a fluid delivery device is provided. The apparatus substantially comprises a fiber and thread guide means using a fiber guide conduit with a fiber guide surface for guiding fibers and a thread guide for guiding at least one continuous yarn into an inlet orifice of a yarn guide conduit and a fluid delivery device for producing a swirl flow about the inlet orifice of the yarn guide conduit so that the at least one continuous yarn can be spun over by the fibers. The thread guide is either a groove which is associated with the fiber guide surface, a bore disposed below the fiber guide surface, an individual tube-like element, or a tube-like element that is combined with a groove or a bore. The thread guide is introduced in a fiber and thread guide means, with the axis of the groove, the bore or the tube-like element being in alignment with the axis of the yarn guide conduit.
    Type: Grant
    Filed: December 18, 2001
    Date of Patent: August 31, 2004
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Jürg Bischofberger, Peter Anderegg, Christian Griesshammer
  • Publication number: 20040123581
    Abstract: The invention relates to air spinning frames for the production of spun thread (2) from a staple fibre strand (3), comprising a drafting unit (4) followed by a spinning box (5) with a twisting chamber (9) and a spindle (8). The invention was based on the task to provide a design by means of which the distance between the drafting unit (4) and the spindle (8) can be newly adjusted in a fast and simple manner. This task has been solved according to the invention by attaching an adjusting device (10) to adjust the distance (I) between the drafting unit and the spindle (8).
    Type: Application
    Filed: August 29, 2003
    Publication date: July 1, 2004
    Applicant: MASCHINENFABRIK RIETER AG
    Inventor: Olivier Wuest
  • Patent number: 6742560
    Abstract: Two flat fiber bundles of non-twisted filaments are arranged in an overlapped relationship or in a parallel and adjoining relationship, and held by a gripper at two points spaced apart from each other in the filament-extending direction. Compressed air is injected from a nozzle to the overlapped portion of the fiber bundles between the holding points at a plurality of positions arranged in the direction transverse to the filament-extending direction to cause the adjacent filaments to be entangled. The nozzle is moved across the fiber bundles while injecting air. Filaments are thus opened and rotated by the injected air, and thus entangled. A fiber bundle joining apparatus includes support sections and a receiving section provided in a base, a gripper cooperating with the support sections to grip overlapped ends of fiber bundles therebetween, a nozzle, and a regulating member to temporarily hold the fiber bundles and to allow the lower fiber bundle to be slackened.
    Type: Grant
    Filed: June 10, 2002
    Date of Patent: June 1, 2004
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventors: Junji Takeuchi, Yasuki Miyashita, Yoshiharu Yasui
  • Patent number: 6726975
    Abstract: Dual fiber carpet and matting fabrics are made of tufted ends of yarn with one end being made from standard carpet denier yarns ranging from about 10 to 30 denier per filament and total denier ranging from about 600 to 5000 denier and the second end being made from heavy monofilament fibers with a denier per filament ranging from about 100 to 500 denier and a total denier ranging from about 300 to 5000 denier per yarn bundle. Both fibers can be made from a variety of synthetic and/or natural materials. Also, a combination of at least three floor or ground covering articles, A, B, and C, for placement in and around the entryway of a building is disclosed which provides more effective cleaning ability for pedestrians' footwear, thus better ensuring the inside of the building itself remains clean.
    Type: Grant
    Filed: June 25, 2001
    Date of Patent: April 27, 2004
    Assignee: Milliken & Company
    Inventors: James N Rockwell, Richard C Willey, Jr., Tammy B Gooch
  • Patent number: 6705072
    Abstract: The invention relates to a spinning device for the production of a spun thread from a fiber bundle, including a nozzle part with an upper nozzle part and a lower nozzle part. Likewise, a spindle is included with an upper part and a lower part. In order to be able to carry out cleaning work between an edge of a fiber guide surface opposite an intake mouth of the spindle, or, at the start of the spinning, in order to be able to guide a yarn end through a yarn guide channel of the spindle onto the fiber guide surface, the upper nozzle part is capable of being raised or can be pivoted. In this situation, the lower nozzle part may remain stationary.
    Type: Grant
    Filed: December 18, 2001
    Date of Patent: March 16, 2004
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Peter Anderegg, Robert Wehrli
  • Publication number: 20040025487
    Abstract: In what is referred to as an air vortex spinning method, fibres are dispersed by a dispersion roller (5) into individual fibres, and conveyed by means of a suction roller (9) against a fibre conveying channel (15), from which the fibres are conducted against the mouth of a yarn channel of a hollow spindle (13). In this situation, the front ends of the fibres are taken up in the yarn channel (14), while the rear ends are acquired by a rotating air flow R and rotated around the mouth area of the spindle or yarn channel, so that a yarn is formed which exhibits at least a surface which displays a character similar to a ring-spun yarn.
    Type: Application
    Filed: July 2, 2003
    Publication date: February 12, 2004
    Inventor: Peter Anderegg