Patents by Inventor Joachim Fritzson
Joachim Fritzson 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).
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Patent number: 11370447Abstract: A method for calibrating sensor signals in networks in a vehicle, wherein a number of sensors are arranged in the vehicle including one or more cameras, one or more LIDAR, and one or more radar units each communicating with a electronic control unit over a network, the electronic control unit communicating with vehicle elements including braking system and steerings system. The method includes receiving incoming signals from sensors at a calibration unit, wherein the incoming signals contain information of a detected object or signal, determining a delay for each received signal relative to a predetermined master clock time; and determining one calibration time for all the received signals based on the determined delays relative the predetermined master clock time.Type: GrantFiled: October 16, 2019Date of Patent: June 28, 2022Inventor: Joachim Fritzson
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Publication number: 20200174474Abstract: A method for sampling of task relevant data in sensors in a vehicle, wherein a number of sensors are arranged in the vehicle. The method comprises receiving a task at a computer or data processing unit arranged in the vehicle, the task being associated with task information, providing a set of abstract models associated with context and content information, the abstract models including models describing traffic scenes and the context and context information describing traffic scene environment, classifying sampling of sensor data according to the task information and a selected abstract model in order to sample task relevant data, evaluating the selected abstract model based on received sensor data whether to maintain the selected abstract model or to select a new abstract model, the received sensor data representing an actual traffic scene, and adapting the classification of sampling of sensor data based on selected abstract model.Type: ApplicationFiled: November 26, 2019Publication date: June 4, 2020Inventors: Joachim FRITZSON, Siamak KHATIBI
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Publication number: 20200122740Abstract: A method for calibrating sensor signals in networks in a vehicle, wherein a number of sensors are arranged in the vehicle including one or more cameras, one or more LIDAR, and one or more radar units each communicating with a electronic control unit over a network, the electronic control unit communicating with vehicle elements including braking system and steerings system. The method includes receiving incoming signals from sensors at a calibration unit, wherein the incoming signals contain information of a detected object or signal, determining a delay for each received signal relative to a predetermined master clock time; and determining one calibration time for all the received signals based on the determined delays relative the predetermined master clock time.Type: ApplicationFiled: October 16, 2019Publication date: April 23, 2020Inventor: Joachim FRITZSON
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Patent number: 6592667Abstract: An applicator for applying a liquid impregnation agent to running yarns, especially a yarn oiler. The applicator has a rotating element with a surface with which at least one transfer mechanism comes into contact, and is equipped with an integrated cleaning device for impurities which collect between the applicator element and the transfer mechanism. The cleaning device is active when the applicator is in operation.Type: GrantFiled: August 30, 2001Date of Patent: July 15, 2003Assignee: Iropa AGInventor: Joachim Fritzson
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Patent number: 6257516Abstract: 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: GrantFiled: July 26, 1999Date of Patent: July 10, 2001Assignee: IRO ABInventors: Joachim Fritzson, Kurt Arne Gunnar Jacobsson, Lars Helge Gottfrid Tholander
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Patent number: 6213419Abstract: A yarn feeder having a stationary storage drum defining at least one cylindrical and circumferentially closed circumferential section, and a stationarily held ring-shaped yarn control element surrounding the circumferential section. The yarn control element is a finite band having a generally planar cross-section and is positioned on the circumferential section with mutually aligned, neighboring ends. The band is resistant against extension in the circumferential direction and is yieldable in the radial direction of the storage drum. Further, the band is preloaded against the circumferential section by means of an elastic tensioning device.Type: GrantFiled: February 22, 1999Date of Patent: April 10, 2001Assignee: Iro ABInventor: Joachim Fritzson
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Patent number: 6125892Abstract: A device for braking a yarn and a yarn feeding apparatus having a stationary storage body for a yarn store with an annular withdrawal surface. The braking device includes a frustoconical flexible braking band which is arranged approximately coaxially relative to the withdrawal surface and to which pressure is applied in the axial direction to press the braking band against the withdrawal surface. A ring-shaped membrane made of an elastomeric or rubber material is joined in a force transmitting manner to the braking band and is supported in an outer ring holder. An end region of the annular membrane is bent back inwardly in a direction towards the withdrawal surface and is joined to the braking band thereat.Type: GrantFiled: June 15, 1999Date of Patent: October 3, 2000Assignee: IRO ABInventor: Joachim Fritzson
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Patent number: 6058982Abstract: A yarn feeder includes a storage drum, and an unwinding brake which has a storage drum counter-braking surface continuous in the peripheral direction and coaxial to the axis of the storage drum. The unwinding brake further has a braking component supported on the counter-braking surface axially counter to the direction of yarn unwinding so as to produce spring action and having a coaxial braking surface also continuous in the peripheral direction. The yarn feeder also has a mounting for the braking component, and a pneumatic brake opening device which has a pressure chamber with a pneumatically loadable, axially movable boundary wall. The boundary wall is connected to the braking component so as to transmit movement at least in the direction of movement thereof counter to the action of the spring. When the boundary wall is pressurised by excess pressure or a vacuum, the braking component can be moved axially into a threading position in which the braking surface is lifted from the counter-braking surface.Type: GrantFiled: August 3, 1998Date of Patent: May 9, 2000Assignee: Iro ABInventor: Joachim Fritzson
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Patent number: 6036132Abstract: A yarn feeder including a storage drum which is held in a stationary manner on a housing, a rotatable winding tube disposed between the housing and the storage drum and having an outwardly facing yarn exit, and a bracket which is rigid with the housing. An opto-electronic sensor is provided at the bracket in alignment with a light inlet/exit zone. At least one wind deflector is provided between the yarn exit and the light inlet/exit zone. The deflector protrudes outwardly beyond the light inlet/exit zone to guide an air stream emerging from yarn exit away from the light inlet/exit zone.Type: GrantFiled: January 21, 1999Date of Patent: March 14, 2000Assignee: IRO ABInventor: Joachim Fritzson
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Patent number: 5944272Abstract: A bobbin core holder for a bobbin creel. The bobbin core holder includes a sleeve body securable on a creel rod, on which sleeve body a ring socket is fitted so as to be rotatable into at least one predeterminable rotary position by a releasable spring detent mechanism. The bobbin core holder also includes a bearing block on the ring socket having a bore therein for the bobbin core and an additional threaded bore opening into the bobbin core bore for a set screw. The bobbin core bore is open at both ends and is circumferentially closed with its axis extending transversely with respect to the axis of the ring socket. The bobbin core bore has an intermediate longitudinal section which at least partly extends through the ring socket, and the length of the bobbin core bore is approximately the same as the outside diameter of the ring socket. The threaded bore extends approximately radially relative to the ring socket axis.Type: GrantFiled: June 1, 1998Date of Patent: August 31, 1999Assignee: IRO ABInventors: Renato Comotto, Joachim Fritzson
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Patent number: 5769132Abstract: A projectile or gripper shuttle loom includes a weft-yarn delivery device with an overend-unwinding delivery unit that has a stationary, brakeless drum, a withdrawal eye arranged coaxially downstream of the drum and a yarn brake controlled in accordance with the loom cycle. The thread path is enclosed by at least one hollow body extending from the circumferential face of the drum to the withdrawal eye at least in one axially limited segment. The hollow body has on its inner side coaxial to the drum axis a plurality of ballooning, disturbing and braking elements which protrude inwards without touching the drum while forming projections and deposit surfaces for the weft yarn.Type: GrantFiled: May 13, 1996Date of Patent: June 23, 1998Assignee: Iro ABInventors: Lars Helge Gottfrid Tholander, Joachim Fritzson
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Patent number: 5706868Abstract: In a device for guiding and braking a yarn, a yarn brake comprises braking elements that are pressed flexibly against each other and act on the yarn in a pinch zone. The yarn brake is arranged in the yarn running path between a yarn feeder and a yarn receiver. A pneumatic threader also is provided which includes at least one air and yarn guide element that is disposed in the yarn brake and surrounds the pinch zone without contact. The air and yarn guide element comprising a receiving end, a delivery end and a guide channel provided therebetween, which is open towards the braking elements and from which the yarn is introduced into the pinch zone. The yarn is conveyed into the guide channel by means of an air flow past the pinch zone to the yarn receiver and is introduced into the pinch zone under the action of a produced drawing force.Type: GrantFiled: May 30, 1996Date of Patent: January 13, 1998Assignee: IRO ABInventors: Joachim Fritzson, Staffan Hagstroem, Per Ohlson
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Patent number: 5377922Abstract: In a sensing and analyzing system for a yarn feeder with yarn storing unit, one or more sensor elements which may be coupled to one or more circuits are used for evaluating or sensing sensor information. At least one sensor element is placed in the unit, from a yarn detection standpoint, in an uncritical relationship to the unit's yarn transporting surface and a yarn turn travelling forward on this. The transmitting members are designed to relay information from each sensor element in the unit in unprocessed or processed form to receiving members located outside the unit. Energy emitting members within the unit ensure energy supply to the sensor elements and the circuits belong thereto. When using optical emitting elements, these are included in an arrangement which supplements or alternatively substantially reduces the influence of vibrations in the unit on the sensing or analyzing result.Type: GrantFiled: February 2, 1993Date of Patent: January 3, 1995Assignee: IRO ABInventors: Lars-Berno Fredriksson, Joachim Fritzson
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Patent number: 5371374Abstract: In the case of an optical sensor, which is used for a thread (Y) moving approximately transversely to the longitudinal direction thereof, in particular for the thread supply (V) which consists of non-separated thread windings in a thread storage and feed device (F) having provided therein a light source (2) directed towards a predetermined passage area (P) for the thread (Y) and a receiver (3) oriented such that scattered light (6) reflected by the thread in said passage area will fall onto it, a shield element (9), (10) is arranged in the passage area (P) below the thread (Y) on the side of the thread which faces away from the light source (2), said shield element being arranged and/or constructed in such a way that it will not reflect light (4), which comes from the light source (2), to the receiver (3) and that it will not allow light, which is reflected by surfaces or objects (L) located on the other side of the shield element (9) with respect to the light source (2), to pass to the receiver (3).Type: GrantFiled: May 25, 1993Date of Patent: December 6, 1994Assignee: IRO ABInventor: Joachim Fritzson
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Patent number: 5170822Abstract: A yarn storage and feed device for textile machines, in particular for the weft yarn of a multicolor weaving machine, comprising an arrangement for limiting the length of the yarn which is unwound in sections having a predetermined length. The arrangement includes a cylindrical storage member for a yarn supply which consists of windings and from which the yarn can be unwound via one end of the cylinder. At least one stopping element is arranged at an axial distance from the last yarn winding of the yarn supply and is adapted to be moved from a passive position, in which the yarn unwound in a circulating movement passes the stopping element, to a stopping position, in which the yarn under take-off tension is stopped at the stopping element during a period of rest until the next movement of the stopping element to the passive position takes place.Type: GrantFiled: June 3, 1991Date of Patent: December 15, 1992Assignee: IRO ABInventors: Par Josefsson, Joachim Fritzson