Patents by Inventor Kurt Arne Gunnar Jacobsson

Kurt Arne Gunnar Jacobsson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7896279
    Abstract: A yarn braking device includes a braking body with the shape of a frustocone coat. The braking body is put over a rounded withdrawal end of a storage body and is pressed from the small diameter end by a resilient axial force against the withdrawal end. The axial force defines the braking effect between the braking body and the withdrawal end. Between a stationary holder and the braking body an axial force generator and a centering device acting in radial direction are provided. The axial force generator is formed by at least one pair of permanent magnets. The permanent magnets are axially aligned by the centering devices with an intermediate gap. The centering device neither is an axial sliding guiding system structurally and functionally separated from the pair of permanent magnets, or is formed free of contact directly by the pair of permanent magnets, respectively.
    Type: Grant
    Filed: April 28, 2005
    Date of Patent: March 1, 2011
    Assignee: IRO AB
    Inventors: Renato Comotto, Kurt Arne Gunnar Jacobsson
  • Patent number: 7604024
    Abstract: The invention concerns a yarn brake (B) comprising a brake (L) electromagnetically stressed against a fixed braking surface (17), a housing (1) whereon the cover bearing the brake (L) is mounted such that it is capable of being lifted relative to the fixed braking surface (17), and at least an adjusting arbor (S) controlling the lifting movements of the cover, said arbor being mounted on the housing (S) in geometric association to the path of the yarn (W). The invention is characterised in that the cover is a flap cover (K) mounted so as to be capable of being lifted about the adjusting arbor (S) for completely clearing the braking zone (12) of the yarn tension device (B).
    Type: Grant
    Filed: July 26, 2002
    Date of Patent: October 20, 2009
    Assignee: Iropa AG
    Inventors: Kurt Arne Gunnar Jacobsson, Per Ohlson, Fiorenzo Ghiardo, Andrea Maffeo
  • Publication number: 20080296425
    Abstract: The invention relates to a yarn tensioning device (B) comprising a braking body (K) embodied in the form of a truncated conical jacket (3) which is coaxially positioned on the rounded discharge end (2) of a storage body (1) and is pushed to a small diameter end (5) by the elastic axial force defining a braking effect between the braking body and the discharge end (2), an axial force generator (P) disposed between a fixed holding element (10) and the braking body and a centering device (C) provided with a radial working direction and disposed between the holding element (10) and the braking body, wherein said axial force generator (P) consists of at least one pair of axially superimposed permanent magnets, an intermediate slit is arranged between said permanent magnets and the centering device (C) which is embodied in the form of a axial slide guideway (9, 12, 24, 23) which is structurally and functionally separated from the permanent magnet pair or contactlessly formed thereby.
    Type: Application
    Filed: April 28, 2005
    Publication date: December 4, 2008
    Applicant: IRO AB
    Inventors: Renato Comotto, Kurt Arne Gunnar Jacobsson
  • Publication number: 20080245110
    Abstract: The invention relates to a yarn processing system S with a textile machine T, a carrying device P, comprising a round cross-section or square cross-section clamping profile 1 and at least one yarn feeding device F, fixed to the clamping profile, which yarn feeding device fixation has a cut-out 5 and at least one detachable clamping element 7 for mounting on the clamping profile, wherein the cut-out of the fixation B of the yarn feeding device F is either selectively changeable between a round configuration and a square configuration or is embodied to be suitable for both cross-sections.
    Type: Application
    Filed: June 24, 2005
    Publication date: October 9, 2008
    Inventors: Kurt Arne Gunnar Jacobsson, Per Ohlson, Jonas Frendin, Richard Kaufmann, Peter Kiebler
  • Patent number: 6832496
    Abstract: In order to monitor/adjust production in a circular knitting machine including several knitting systems and several yarn feeder devices, yarn is fed to active knitting systems from several supply devices operating according to at least two different yarn feeding principles, and in a non-positive manner. The individually fed amounts of yarn are continuously measured by means of scanned real rotation signals of the feeder devices. In order to obtain monitoring information and/or adjustment measures, comparisons are made with corresponding set amounts of yarn within at least one range of tolerance, the extent of which is adapted at least to yarn quality and/or yarn path parameters.
    Type: Grant
    Filed: February 17, 2004
    Date of Patent: December 21, 2004
    Assignees: Memminger-IRO GmbH, IRO AB
    Inventors: Lars Helge Gottfrid Tholander, Kurt Arne Gunnar Jacobsson, Friedrich Weber, Ludwig Ketterer
  • Publication number: 20040154339
    Abstract: In order to monitor/adjust production especially in a circular knitting machine comprising several knitting systems and several yarn feeder devices, yarn is fed to active knitting systems from several supply devices operating according to at least two different yarn feeder principles, in a non-positive manner. The individually fed amounts of yarn are continuously measured by means of scanned real rotation signals of the feeder devices. In order to obtain monitoring information and/or adjustment measures, comparisons are made with corresponding set amounts of yarn within at least one range of tolerance, the extent of which is adapted at least to yarn quality and/or yarn path parameters.
    Type: Application
    Filed: February 17, 2004
    Publication date: August 12, 2004
    Inventors: Lars Helge Gottfrid Tholander, Kurt Arne Gunnar Jacobsson, Friedrich Weber, Ludwig Ketterer
  • Patent number: 6752178
    Abstract: A method for inserting a longitudinally elastic yarn from a yarn supply into a shuttleless weaving machine. The yarn is first removed with positive yarn feed from the yarn supply. Afterwards, the yarn in intermediately stored in adjacent windings with a predetermined elongation while using a winding speed that is synchronized with the positive feed speed, and for each insertion process, the yarn is released only with a predetermined insertion length.
    Type: Grant
    Filed: January 16, 2003
    Date of Patent: June 22, 2004
    Assignee: Iropa AG
    Inventor: Kurt Arne Gunnar Jacobsson
  • Publication number: 20040026562
    Abstract: An endless yarn braking strip for a yarn tensioning device consists of precipitation hardened stainless steel (S). The endless yarn braking strip is produced by first manufacturing an endless blank from a sheet of precipitation hardening steel, shaping the blank into a truncated cone in its endless form, and then hardening the strip by precipitation hardening.
    Type: Application
    Filed: August 11, 2003
    Publication date: February 12, 2004
    Inventors: Kurt Arne Gunnar Jacobsson, Per Ohlson
  • Patent number: 6637692
    Abstract: A yarn feeder including a stationary storage body and a yarn brake having a brake element which axially contacts the storage body. The brake element is embodied by a truncated cone-shaped, thin-walled braking band which is held externally in an elastic, circular retaining membrane joined to a carrier ring that is concentric to the brake band. At least outside the retaining area for the brake band, several areas having a reduced wall thickness are provided in the retaining membrane.
    Type: Grant
    Filed: February 11, 2002
    Date of Patent: October 28, 2003
    Assignee: Iropa AG
    Inventor: Kurt Arne Gunnar Jacobsson
  • Patent number: 6322016
    Abstract: A yarn feeding device having a storage body defining a frontal withdrawal rim which forms a yarn braking zone of a yarn brake in co-operation with a circumferentially continuous braking band in the shape of a frustocone jacket and made of a material which is elastically deformable perpendicular to the generatrix of the frustocone. The yarn brake includes a stationary support for the braking band carrier which presses the braking band substantially axially and resiliently against the withdrawal rim. The braking band is held in a floating manner in relation to the withdrawal rim and in relation to the braking band carrier.
    Type: Grant
    Filed: November 15, 1999
    Date of Patent: November 27, 2001
    Assignee: IRO AB
    Inventors: Kurt Arne Gunnar Jacobsson, Per Ohlson
  • Patent number: 6257516
    Abstract: An axial disc brake, particularly for a yarn feeding device, having braking surfaces which are axially pressed against each other with a predetermined yieldable contact pressure. One of said braking surfaces has a spherical convex shape, and the other braking surface is conical with a cone axis lying at least approximately along the axis of the disc brake. The axial disc brake can be provided at the front end of a storage drum of a yarn feeding device of a projectile or gripper weaving machine, such that the yarn withdrawn from the storage drum rotates like the pointer of a clock along a yarn guiding surface and directly enters into the contact zone of the braking surfaces without deflection, and is deflected after having passed the contact zone gently in the axial direction.
    Type: Grant
    Filed: July 26, 1999
    Date of Patent: July 10, 2001
    Assignee: IRO AB
    Inventors: Joachim Fritzson, Kurt Arne Gunnar Jacobsson, Lars Helge Gottfrid Tholander
  • Patent number: 6095199
    Abstract: A yarn feeder having a storage drum, a bracket fixed to the housing and a controlled yarn withdrawal brake axially displaceably held in the bracket. The yarn withdrawal brake includes a ring-shaped braking body co-operating with a yarn withdrawal region of the storage drum and further includes an outer carrier ring which is displaceable in the axial direction within a predetermined axial clearance defined in a ring-shaped holder. The predetermined axial clearance is defined by axial counter stops, and the holder includes at least one pair of shift drives which act on the carrier ring from opposite directions. At least one side surface of the carrier ring is provided with at least one group of travel stroke adjustment ramps of different axial heights, each of which ramps can be selectively aligned with an axial counter stop of the holder.
    Type: Grant
    Filed: April 29, 1999
    Date of Patent: August 1, 2000
    Assignee: IRO AB
    Inventor: Kurt Arne Gunnar Jacobsson
  • Patent number: 6015109
    Abstract: In a yarn feeder, particularly for knitting machines, having a stationary housing and a rotational element which can be driven by a motor for winding on a yarn, and having a mechanical backturn-detent mechanism for the rotational element, which mechanism contains a detent member which is displaceable on a counter-member between a running position and a blocking position, in which blocking position the detent member engages at a braking surface. The detent member underlying a permanent drag power in each rotational direction which drag power is generated by means of friction contact in case of a rotational movement of the rotational element for displacing the detent member in dependence from the sense of rotation and in relation to the counter member either into the running position or into the blocking position. The counter-member and the detent member consist of ring bodies which are set within each other and which are rotatable in relation to each other about the rotational axis of the rotational element.
    Type: Grant
    Filed: June 29, 1998
    Date of Patent: January 18, 2000
    Assignee: Memminger-IRO GmbH
    Inventors: Per Ohlson, Kurt Arne Gunnar Jacobsson
  • Patent number: 5765399
    Abstract: For determining the movement of a thread supply boundary on the storage surface of a thread storage and feed device, different scanning properties of at least two circumferentially offset circumferential sections of the storage surface are scanned simultaneously and converted into storage surface signals which are nonidentical among themselves and which are discriminated from thread signals which are identical among themselves. The thread signals are generated by sensors which scan a scanning zone on the storage surface and formed on the basis of a scanning property of the thread windings when the thread supply is present in the scanning zone. The thread storage and feed device is provided with first and second circumferential sections on the storage surface differing from one another with respect to their scanning properties, and a plurality of sensors.
    Type: Grant
    Filed: August 16, 1996
    Date of Patent: June 16, 1998
    Assignees: Iro AB, Memminger-Iro GmbH
    Inventors: Rolf Huss, Kurt Arne Gunnar Jacobsson, Lars Helge Gottfrid Tholander, Friedrich Weber
  • Patent number: 5662148
    Abstract: A thread feed system having a measuring feeder, a supply bobbin supplying thread to the measuring feeder and a textile machine which withdraws the thread from the measuring feeder so as to perform a weaving operation. The measuring feeder includes a storage drum and a winding element which removes the thread from the supply bobbin and winds the thread onto the storage drum. A control device is provided for monitoring the operating conditions of the thread system so as to identify increases in thread tension. The control device is operatively connected to an auxiliary conveyor device having a drivable friction roll which is frictionally engaged with the thread between the supply bobbin and the storage drum. The auxiliary conveyor device is operable so as to provide an increased frictional action on the thread so as to advance the thread at an increased rate to the storage drum so as to preparatorily counteract the thread tension increase and eliminate short picks of the thread in the textile machine.
    Type: Grant
    Filed: July 28, 1995
    Date of Patent: September 2, 1997
    Assignee: IRO AB
    Inventors: Kurt Arne Gunnar Jacobsson, Lars Tholander, Paer Josefsson
  • Patent number: 4114822
    Abstract: A thread delivery device including a rotatable thread drum on which a thread is wound tangentially to form an intermediate thread storage and from which the thread is withdrawn endwise over a withdrawal edge for supply to a textile machine. A thread control element is arranged in the area of the withdrawal edge for engaging the withdrawn thread. A stationary withdrawal eyelet engages the withdrawn thread downstream of the thread control element. The thread control element is constructed as an eyelet which is closed at least opposite the direction of the rotation of the off-running thread relative to the drum. This thread control element is arranged approximately at the height of the withdrawal edge and is mounted on an arm which is rotatably supported on the drum about the longitudinal axis thereof. The friction in the rotatable bearing between the arm and the drum is of a magnitude such that the arm rotates with the drum only when the tension in the withdrawn thread falls below a desired magnitude.
    Type: Grant
    Filed: August 18, 1977
    Date of Patent: September 19, 1978
    Assignee: Aktiebolaget IRO
    Inventor: Kurt Arne Gunnar Jacobsson
  • Patent number: 4106713
    Abstract: A thread delivery device for a textile machine having a rotatable drum on which a thread issuing from a thread bobbin can be wound tangentially for forming an intermediate thread storage. The drum has a lower thread removal edge over which the thread can be withdrawn tangentially for permitting positive thread delivery. A thread guide member is stationarily positioned radially outside of the drum approximately at the level of the removal edge to guide the withdrawn thread. A thread control element is disposed in engagement with the withdrawn thread at a location between its engagement with the drum and the thread guiding member. The thread control element, which is movable transversely relative to the withdrawal path of the thread, is positioned approximately at the level of the removal edge of the drum and is maintained in this position by its engagement with the withdrawn thread so long as the normal working tension is maintained in the thread.
    Type: Grant
    Filed: May 3, 1977
    Date of Patent: August 15, 1978
    Assignee: Aktiebolaget IRO
    Inventor: Kurt Arne Gunnar Jacobsson
  • Patent number: 4092006
    Abstract: A thread storage and delivery device for textile machines, including a housing having a thread supply device rotatably supported thereon and defining a thread channel, a rotatably supported drum axle, a storage drum, and a gearing arrangement with at least one driven wheel which can be driven by means of a carrier pin carried by the thread supply device so that the drum rolls along on a housing-fixed rolling path. The gearing arrangement couples the storage drum to the thread supply device in such a manner that the storage drum stands still with respect to the housing as the thread supply device is rotatably driven. This gearing arrangement engages the drum axle which is fixedly connected to the storage drum and is supported rotatably on the thread supply device, and the thread channel is arranged at a radial distance from the drum axis and extends substantially rectilinearly.
    Type: Grant
    Filed: December 1, 1976
    Date of Patent: May 30, 1978
    Assignee: Aktiebolaget IRO
    Inventor: Kurt Arne Gunnar Jacobsson
  • Patent number: 4068807
    Abstract: A device for supplying a textile or metallic thread to a processing device. The thread issuing from a storage bobbin is wound tangentially on a storage body and is unwound endwise therefrom beneath a resilient brake ring which abuts a conical support surface on the storage body. The brake ring can be adjusted in the axial direction of the storage body relative to the support surface by means of an adjusting means which can be actuated in response to the thread tension.
    Type: Grant
    Filed: September 20, 1976
    Date of Patent: January 17, 1978
    Assignee: Aktiebolaget IRO
    Inventor: Kurt Arne Gunnar Jacobsson
  • Patent number: 4067508
    Abstract: A thread supply device for a textile machine, which device includes a drum on which a thread is wound to form an intermediate thread storage, and from which the thread is withdrawn over one end of the drum for supply to the textile machine. A brake means is disposed adjacent the withdrawal end of the drum and acts on the unwinding thread for imposing a braking effect thereon. The braking means acts progressively on the unwinding thread as it moves peripherally relative to the drum for either increasing or decreasing the braking effect on the thread, depending upon the relative peripheral direction of movement of the thread.
    Type: Grant
    Filed: November 8, 1976
    Date of Patent: January 10, 1978
    Assignee: Aktiebolaget IRO
    Inventor: Kurt Arne Gunnar Jacobsson