Patents by Inventor Lars Jonsson
Lars Jonsson 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: 7166936Abstract: An apparatus for controlling an electric switching device (1) for alternating current arranged in a current path for opening the switching device and for breaking the current in the current path after occurrence of a fault current comprises members (15) adapted to detect the current in the current path and a unit (20) adapted to control the electric switching device to break the current in the current path directly after a half wave of the alternating current having a peak value below a predetermined current limit value, so that the breaking is completed through a zero-crossing of the alternating current terminating a said half wave.Type: GrantFiled: June 7, 2001Date of Patent: January 23, 2007Assignee: ABB Group Services Center ABInventors: Per Larsson, Magnus Backman, Lars Jonsson
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Patent number: 7151353Abstract: A method for evaluating a condition of a switching device. The switching device includes contact parts, an electric motor and a mechanical coupling device for transforming motion from the electric motor to at least one of the contact parts. A self-diagnostic test is performed on a component of the switching device. The test includes making at least one small movement with the electric motor. A switching device includes contact parts, an electric motor, a mechanical coupling device for transforming motion from the electric motor to at least one of the contact parts, and tester for making self-diagnostic tests, wherein the tester makes small motor movements that are a fraction of a full breaking movement, thereby producing data for evaluating a condition of the switching device.Type: GrantFiled: September 17, 2001Date of Patent: December 19, 2006Assignee: ABB ABInventors: Sjoerd G. Bosga, Philip C. Kiaer, Magnus Backman, Mats Svensson, Per-Olof Thureson, Lars Jonsson, Freddy Magnussen, Per Larsson, Stefan Valdemarsson
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Patent number: 7010436Abstract: An apparatus (14) for detecting a zero-crossing of an alternating current after occurrence of a fault in a current path (2) for determining a suitable time for opening an electric switching device (2) arranged in the current path for breaking the current in the current path comprises members (15) adapted to detect the current in the current path. An arrangement (19) is adapted to calculate the dc-level of the current and the decay of the dc-level with time on the basis of values of the alternating current detected and also predict the time for a future zero-crossing of the alternating current on the basis of at least current values obtained through said current detection, the dc-level calculated, the dc-decay calculated and information about the period time of the alternating current.Type: GrantFiled: June 7, 2001Date of Patent: March 7, 2006Assignee: ABB Group Services Center ABInventors: Per Larsson, Magnus Backman, Lars Jonsson
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Patent number: 6994791Abstract: The present invention relates to an adsorbent material for chromatography comprising a polymer immobilized onto a support, wherein the polymer backbone is attached to the support by one or more linkages which comprise one or more amide groups. It further relates to a method for preparing an adsorbent material for chromatography wherein a support is reacted with a polymer.Type: GrantFiled: June 27, 2003Date of Patent: February 7, 2006Assignee: Akzo Nobel N.V.Inventors: Per Möller, Domingo Sanchez, Peter Gidlund, Börje S. Persson, Lars Jonsson
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Patent number: 6960844Abstract: An electric switching device for alternating current comprises two branches (2, 3) connected in parallel in a current path and having each at least two contact members (4–7) connected in series. A semiconductor device (8) is adapted to interconnect the midpoints between the two contact members of each branch. When opening the current path a first contact member (5) of one, first branch located before said midpoint as seen in the current direction existing is controlled to open and a second contact member (6) of the second branch located after the midpoint as seen in the current direction is controlled to open for transferring the current to a temporary current path through the semiconductor device. The current path through the switching device is then broken when the semiconductor device is in a blocking state by opening a contact member (4, 7) of the switching device arranged in the temporary current path.Type: GrantFiled: November 20, 2000Date of Patent: November 1, 2005Assignee: ABB Technology AGInventors: Falah Al-Hosini, Jan Smede, Jan-Anders Nygren Nolemo, Magnus Backman, Philip Kjaer, Lennart Balgård, Per Larsson, Ove Albertsson, Lars Jonsson, Jan Johansson
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Publication number: 20040100741Abstract: The present invention relates to a method for testing, controlling and regulating a switching device with contact parts, to a switching device and to a computer program therefore. The switching device comprises an electric motor (6) and a mechanical coupling device (41) for transforming motion from the electric motor to one of the contact parts (4, 5). Position, speed and/or acceleration of the contact part during operation are controlled during operation. By means of a control unit (43), the operation of the switching device is adaptively controlled in real-time. Storage means (70) are provided and contain information on measurements, events and failures in the switching device and include operation parameters. In the logs, information regarding self-diagnostic tests of the switching device can be stored as well.Type: ApplicationFiled: July 7, 2003Publication date: May 27, 2004Inventors: Sjoerd G Bosga, Philip C Kiaer, Magnus Backman, Mars Svensson, Per-Olof Thureson, Lars Jonsson, Freddy Magnussen, Per Larsson, Stefan Valdemarsson
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Publication number: 20040090720Abstract: An apparatus for a controlling an electric switching device (1) for alternating current arranged in a current path for opening the switching device and for breaking the current in the current path after occurrence of a fault current comprises members (15) adapted to detect the current in the current path and a unit (20) adapted to control the electric switching device to break the current in the current path directly after a half wave of the alternating current having a peak value below a predetermined current limit value, so that the breaking is completed through a zero-crossing of the alternating current terminating a said half wave.Type: ApplicationFiled: April 7, 2003Publication date: May 13, 2004Inventors: Per Larsson, Magnus Backman, Lars Jonsson
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Publication number: 20040090719Abstract: An apparatus (14) for detecting a zero crossing of an alternating current after occurrence of a fault in a current path (2) for determining a suitable time for opening an electric switching device (2) arranged in the current path for breaking the current in the current path comprises members (15) adapted to detect the current in the current path. An arrangement (19) is adapted to calculate the dc-level of the current and the decay of the dc-level with time on the basis of values of the alternating current detected and also predict the time for a future zero-crossing of the alternating current on the basis of at least current values obtained through said current detection, the dc-level calculated, the dc-decay calculated and information about the period time of the alternating current.Type: ApplicationFiled: June 4, 2003Publication date: May 13, 2004Inventors: Per Larsson, Magnus Backman, Lars Jonsson
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Publication number: 20040059040Abstract: The present invention relates to an adsorbent material for chromatography comprising a polymer immobilised onto a support, wherein the polymer backbone is attached to the support by one or more linkages which comprise one or more amide groups. It further relates to a method for preparing an adsorbent material for chromatography wherein a support is reacted with a polymer.Type: ApplicationFiled: June 27, 2003Publication date: March 25, 2004Inventors: Per Moller, Domingo Sanchez, Peter Gidlund, Borje S. Persson, Lars Jonsson
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Patent number: 6687366Abstract: The present invention relates to an arrangement, a network and methods for identifying the relevant SDP for a question from an SCP in a telecommunication network with a large amount of subscribers and handling and administration of a large amount of subscribers by introducing a function for intelligent routing. The intelligent routing between SCP and SDP can be handled by a node standing by itself in the network or as a part-function in an already existing node, for example an SCP. When a new subscriber shall be stored in an SDP subscriber data is transferred from the service administration to a master IRF (Intelligent Routing Function). The IRF comprises a function for determining which SDP that shall store the subscriber data and the IRF thereafter transfer the subscriber data to the SDP. The IRF also stores this information. The information is also transferred to the other IRFs. When an SCP gets a call from an SSP, the SCP contacts an IRF which contacts an SDP.Type: GrantFiled: November 5, 1999Date of Patent: February 3, 2004Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Lars Jonsson, Göran Pettersson
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Patent number: 6668626Abstract: A system and a method for measuring and determining flatness of a strip (1) of rolled material. Said system is comprising a measuring roll (2) having a cylindrical central structure (41) having a number of measuring devices for force/pressure registration. Said devices is generating measurement output signals (Upi) depending on the contact between the strip and the measuring roll (2), wherein said measurement output signal (Upi) comprises a force component signal (UFi). Said system also comprises a Flatness Determination Unit (56), said unit being arranged for calculating the flatness (&Dgr;&sgr;1) of the strip based exclusively on signals derived from measurement output signal (Upi) values generated by said measuring devices and information about the values of the width and thickness of the strip (1). The system is continuously determining the Wrap Angle (&agr;) from at least one measurement output signal (Upi) and automatically compensating for a changing Wrap Angle (&agr;).Type: GrantFiled: February 27, 2002Date of Patent: December 30, 2003Assignee: ABB ABInventors: Kenneth Grefve, Jörgen Bosson, Magnus Hallefält, Lars Jonsson
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Patent number: 6518865Abstract: An electric switching device for fast closing of a high current in a power network comprising a first electrode (1), a second electrode (2), a movable contact element (3) closing said first and second electrodes, and an operating device. The operating device comprises a helically wound first coil (6) secured to the first electrode. The movable contact element comprises a flange (4) making contact with the coil. A current pulse flowing through the coil forms a repulsive force between the coil and the flange, said repulsive force throwing the movable contact element to the second electrode and completing the closing operation.Type: GrantFiled: February 26, 2002Date of Patent: February 11, 2003Assignee: ABB T&D Technology LTD et al.Inventors: Falah Al-Hosini, Stefan Valdemarsson, Lars Jonsson, Jan-Anders Nygren, Per Larsson
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Patent number: 6513358Abstract: A method for controlling flatness of a strip (1) of rolled material rolled to a first flatness target and coiled and that is subsequently uncoiled, and a system which employs the method. Measurements of the flatness of the strip (1) during rolling are compared to both the first flatness target and to a second flatness target, a Mill Flatness Target 2. A flatness target for each of one or more subsequent processes, a Post Rolling Flatness Target (PRFT) and a measured flatness error is used to adapt a control signal for a mill stand (5) to control and regulate the flatness of subsequent production of rolled material of the same specification. The adaption may be made using different statistical techniques including fuzzy logic and neuro-fuzzy logic control methods. In the preferred embodiment, flatness measurements after decoiling are also fed forward to at least one subsequent process 12 and used to adapt control signals to regulate flatness of the current strip in the subsequent process 12.Type: GrantFiled: December 22, 2000Date of Patent: February 4, 2003Assignee: ABB ABInventors: Lars Jonsson, Klaus Meyer
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Publication number: 20020134146Abstract: A system and a method for measuring and determining flatness of a strip (1) of rolled material. Said system is comprising a measuring roll (2) having a cylindrical central structure (41) having a number of measuring devices for force/pressure registration. Said devicesis generating measurement output signals (Upi) depending on the contact between the strip and the measuring roll (2), wherein said measurement output signal (Upi) comprises a force component signal (UFi). Said system also comprises a Flatness Determination Unit (56), said unit being arranged for calculating the flatness (&Dgr;&sgr;1) of the strip based exclusively on signals derived from measurement output signal (Upi) values generated by said measuring devices and information about the values of the width and thickness of the strip (1). The system is continuously determining the Wrap Angle (&agr;) from at least one measurement output signal (Upi) and automatically compensating for a changing Wrap Angle (&agr;).Type: ApplicationFiled: February 27, 2002Publication date: September 26, 2002Inventors: Kenneth Grefve, Jorgen Bosson, Magnus Hallefalt, Lars Jonsson
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Publication number: 20020020198Abstract: A method for controlling flatness of a strip (1) of rolled material rolled to a first flatness target and coiled and that is subsequently uncoiled, and a system which employs the method. Measurements of the flatness of the strip (1) during rolling are compared to both the first flatness target and to a second flatness target, a Mill Flatness Target 2. A flatness target for each of one or more subsequent processes, a Post Rolling Flatness Target (PRFT) and a measured flatness error is used to adapt a control signal for a mill stand (5) to control and regulate the flatness of subsequent production of rolled material of the same specification. The adaption may be made using different statistical techniques including fuzzy logic and neuro-fuzzy logic control methods. In the preferred embodiment, flatness measurements after decoiling are also fed forward to at least one subsequent process 12 and used to adapt control signals to regulate flatness of the current strip in the subsequent process 12.Type: ApplicationFiled: December 22, 2000Publication date: February 21, 2002Inventors: Lars Jonsson, Klaus Meyer
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Patent number: 6340027Abstract: Monofilament dental floss/tape of polymer material including fluoride and polishing powder the dental floss/tape (1) being ribbon-shaped and having material properties that enable it to be stretched to increase its length by at least 100% and also to reduce its cross-sectional area by up to ten times, and also a method fot the use of monofilament polymer dental floss/tape (1) by preparing a suitable length of dental floss/tape (1) for cleaning the teeth , by extending it to a reduce cross section so that the area of the whole piece of floss/tape can thereafter be used to clean the teeth distally and/or mesially.Type: GrantFiled: February 16, 2001Date of Patent: January 22, 2002Assignee: Athena Nordic ABInventors: Leif Hagne, Lars Jönsson
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Patent number: 6330701Abstract: The present invention relates to a method of utilizing information made available in a bit error check of data words belonging to instructions read into a processor having a first (11) and a second (11′) calculating unit which operate in parallel with one another, a so-called double processor mode. The processor structure also comprises a third and a fourth calculating unit (13, 13′) intended for continuously checking for possible bit errors in read-in data words, a comparator (14) for comparing output data from parallel operating units (11, 11′), a diagnostic unit (15) adapted to determine which of the calculating units delivered correct output data when detecting a difference in output data in the comparator (14), and a control unit (16) adapted to control that the output data from the processor structure (1) originates from a calculating unit that has delivered correct output data.Type: GrantFiled: December 9, 1998Date of Patent: December 11, 2001Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Michael Rosendahl, Tomas Lars Jonsson, Per Anders Holmberg
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Patent number: 6320392Abstract: An active filter device provided for compensating harmonic distortion in a supply line by injecting for each harmonic (fk) to be considered a compensation current. The compensation current being determined by injecting a monitoring current on the supply line at a first (f1) and second (f2) frequency value, offset respectively on either side of the considered harmonic, and measuring response currents generated by the supply line upon injection of said monitoring currents.Type: GrantFiled: September 13, 1999Date of Patent: November 20, 2001Assignee: Asea Brown Boveri Jumet S.A.Inventor: Lars Jonsson
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Patent number: 6292338Abstract: An electric coupling device for connecting, disconnecting or limiting the current in an electric circuit. The electric coupling device includes a variable resistor. This resistance is variable between a very low value corresponding to a conducting state and a very high value corresponding to a substantially insulating state. Switching between the states takes place continually and in a very short time. The invention relates to an electric circuit provided with such an electric coupling device and a method performed in accordance with the function of the electric coupling device.Type: GrantFiled: December 8, 1999Date of Patent: September 18, 2001Assignee: ABB ABInventors: Hans Bernhoff, Henrik Breder, Jan Isberg, Lars Jonsson, Lars Liljestrand, Stefan Valdemarsson
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Patent number: 6279082Abstract: A method and system are described for improving memory access. The invention will improve memory access in systems where program code and data stored in memory have low locality. The invention builds on that the access to at least some addresses of the memory will take longer time than the access to other addresses, such as, for example, page type memory.Type: GrantFiled: October 14, 1998Date of Patent: August 21, 2001Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Lennart Michael Rosendahl, Tomas Lars Jonsson, Per Anders Holmberg