Patents by Inventor Kenneth Johansson
Kenneth Johansson 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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Publication number: 20230089717Abstract: A protection device configured for being electrically connected to a test tap of a HV bushing for protecting the bushing from transient overvoltages. The protection device includes at least two parallel connected protection branches connected between the test tap and a ground connector configured for connecting to ground. Each of the protection branches includes a plurality of parallel connected gas discharge tubes, a Transient-Voltage-Suppression (TVS) diode connected in series with the gas discharge tubes, and a resistor connected in series with the gas discharge tubes and across the TVS diode.Type: ApplicationFiled: February 25, 2021Publication date: March 23, 2023Inventor: Kenneth Johansson
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Publication number: 20230038231Abstract: The present invention relates to a process for reducing low molecular weight oligomers and wax build-up in one or more recycle coolers in a high pressure polymerization process by means of a gas stream, which is heated and/or free of wax, introduced into the one or more recycle coolers and the use of a heated gas stream for removing low molecular weight oligomers and wax build-up in one or more recycle coolers in a high pressure polymerization process.Type: ApplicationFiled: January 8, 2021Publication date: February 9, 2023Inventors: Kenneth Johansson, Tom Deboel
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Publication number: 20220415544Abstract: The present disclosure relates to a condenser core configured for surrounding an electrical conductor. The condenser core includes an insulation material and a plurality of electrically conducting capacitive layers for modifying electrical fields formed by a current flowing in the electrical conductor. At least one of the electrically conducting capacitive layers includes a first foil and a second foil. Each of the first and second foils of an outermost capacitive layer is connected with a grounding arrangement for grounding the foils.Type: ApplicationFiled: October 27, 2020Publication date: December 29, 2022Applicant: Hitachi Energy Switzerland AGInventors: Jens KANJE-NORDBERG, Peter SJÖBERG, Kenneth JOHANSSON
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Patent number: 11270817Abstract: A bushing including: a bushing comprising: a bushing body, an electrode contained in the bushing body, a flange body mounted to the bushing body, a tap assembly including: a hollow electrically conductive sleeve portion extending from the flange body, a conductor connected to the electrode and extending from the electrode into the sleeve portion, a pin connected to the conductor, an insulating body provided around the conductor in the sleeve portion, and an electrically conductive lid configured to be assembled with the sleeve portion, the lid having a cap portion and a hollow cylindrical extension portion, wherein the cap portion is configured to receive an end portion of the pin, wherein the extension portion extends axially from the cap portion and is configured to be received by the sleeve portion, and wherein the extension portion is configured to surround the insulating body in the sleeve portion when the lid is assembled with the sleeve portion.Type: GrantFiled: March 22, 2019Date of Patent: March 8, 2022Assignee: HITACHI ENERGY SWITZERLAND AGInventors: Peter Sjöberg, Björn Edberg, Kenneth Johansson, Jan-Åke Börjesson
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Publication number: 20210027919Abstract: A bushing including: a bushing comprising: a bushing body, an electrode contained in the bushing body, a flange body mounted to the bushing body, a tap assembly including: a hollow electrically conductive sleeve portion extending from the flange body, a conductor connected to the electrode and extending from the electrode into the sleeve portion, a pin connected to the conductor, an insulating body provided around the conductor in the sleeve portion, and an electrically conductive lid configured to be assembled with the sleeve portion, the lid having a cap portion and a hollow cylindrical extension portion, wherein the cap portion is configured to receive an end portion of the pin, wherein the extension portion extends axially from the cap portion and is configured to be received by the sleeve portion, and wherein the extension portion is configured to surround the insulating body in the sleeve portion when the lid is assembled with the sleeve portion.Type: ApplicationFiled: March 22, 2019Publication date: January 28, 2021Applicant: ABB Power Grids Switzerland AGInventors: Peter SJÖBERG, Björn EDBERG, Kenneth JOHANSSON, Jan-Åke BÖRJESSON
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Patent number: 9530588Abstract: A circuit breaking arrangement is disclosed, which is adapted to be coupled to a transmission line arranged to carry direct current for controllably effecting discontinuation of flow of direct current in the transmission line. The circuit breaking arrangement includes a current interrupter unit adapted to, when actuated, interrupt current in the transmission line and a first resonance circuit and at least a second resonance circuit. Each of the first and the at least a second resonance circuit is adapted to, upon actuation of the current interrupter unit and when the respective resonance circuit is activated, generate a resonance current superposing current of any arc generated in the current interrupter unit after actuation thereof.Type: GrantFiled: March 27, 2013Date of Patent: December 27, 2016Assignee: ABB TECHNOLOGY LTDInventor: Kenneth Johansson
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Patent number: 9450397Abstract: A circuit breaking arrangement is disclosed, which is adapted to be coupled to a transmission line arranged to carry direct current for controllably effecting discontinuation of flow of direct current in the transmission line. The circuit breaking arrangement includes a current interrupter unit, which is adapted to, when actuated, interrupt current in the transmission line, and at least one resonance circuit. The resonance circuit is connected in parallel with the current interrupter unit and includes at least one capacitor, at least one inductor and at least one switch element. The resonance circuit is adapted to, upon actuation of the current interrupter unit, generate a resonance current superposing current of any arc generated in the current interrupter unit after actuation thereof, upon closing of the switch element by means of successive discharging and charging of the at least one capacitor.Type: GrantFiled: April 9, 2013Date of Patent: September 20, 2016Assignee: ABB TECHNOLOGY LtdInventor: Kenneth Johansson
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Publication number: 20160035509Abstract: A circuit breaking arrangement is disclosed, which is adapted to be coupled to a transmission line arranged to carry direct current for controllably effecting discontinuation of flow of direct current in the transmission line. The circuit breaking arrangement includes a current interrupter unit adapted to, when actuated, interrupt current in the transmission line and a first resonance circuit and at least a second resonance circuit. Each of the first and the at least a second resonance circuit is adapted to, upon actuation of the current interrupter unit and when the respective resonance circuit is activated, generate a resonance current superposing current of any arc generated in the current interrupter unit after actuation thereof.Type: ApplicationFiled: March 27, 2013Publication date: February 4, 2016Applicant: ABB Technology LtdInventor: Kenneth JOHANSSON
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Publication number: 20160028222Abstract: A circuit breaking arrangement is disclosed, which is adapted to be coupled to a transmission line arranged to carry direct current for controllably effecting discontinuation of flow of direct current in the transmission line. The circuit breaking arrangement includes a current interrupter unit, which is adapted to, when actuated, interrupt current in the transmission line, and at least one resonance circuit. The resonance circuit is connected in parallel with the current interrupter unit and includes at least one capacitor, at least one inductor and at least one switch element. The resonance circuit is adapted to, upon actuation of the current interrupter unit, generate a resonance current superposing current of any arc generated in the current interrupter unit after actuation thereof, upon closing of the switch element by means of successive discharging and charging of the at least one capacitor.Type: ApplicationFiled: April 9, 2013Publication date: January 28, 2016Applicant: ABB Technology LtdInventor: Kenneth JOHANSSON
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Patent number: 9109064Abstract: The present invention relates to an ethylene homo- or copolymerization process, characterized in that an inhibitor is added to the reaction mixture or any of its components before the reaction mixture is fed to the reaction zone. The present invention further relates to the use of an inhibitor to reduce fouling in an ethylene homo- or copolymerization process.Type: GrantFiled: March 12, 2013Date of Patent: August 18, 2015Assignee: BOREALIS AGInventors: Thomas Hjertberg, Torbjorn Magnusson, Bjorn Voigt, Mattias Bergqvist, Kenneth Johansson, Marcus Kierkegaard, Annika Smedberg
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Publication number: 20150038655Abstract: The present invention relates to a high-pressure radical ethylene polymerization process in which ethylene is polymerized with a polyunsaturated olefin comprising at least 6 carbon atoms and at least two non-conjugated double bonds of which at least one is terminal; and/or an alpha-omega-divinylsiloxane according to Formula (I) wherein R1 and R2, which can be alike or different, are selected among alkyl groups having 1-4 carbon atoms and alkoxy groups having 1-4 carbon atoms, and n is 1-200, characterized in that the maximum temperature of the reaction mixture prior to introduction into the reaction zone is 160° C. or less.Type: ApplicationFiled: January 7, 2013Publication date: February 5, 2015Applicant: BOREALIS AGInventors: Torbjorn Magnusson, Thomas Hjertberg, Mattias Bergqvist, Kenneth Johansson, Bjorn Voigt
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Publication number: 20150031843Abstract: The present invention relates to an ethylene homo- or copolymerization process, characterized in that an inhibitor is added to the reaction mixture or any of its components before the reaction mixture is fed to the reaction zone. The present invention further relates to the use of an inhibitor to reduce fouling in an ethylene homo- or copolymerization process.Type: ApplicationFiled: March 12, 2013Publication date: January 29, 2015Inventors: Thomas Hjertberg, Torbjorn Magnusson, Bjorn Voigt, Mattias Bergqvist, Kenneth Johansson, Marcus Kierkegaard, Annika Smedberg
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Patent number: 8907223Abstract: A lead-trough device for an electrical conductor, which structure includes an insulating body arranged for housing the electrical conductor along a central axis of the insulating body. Further, the lead-trough structure includes insulating layers and conducting layers arranged on the inside of the insulating body, which insulating layers and conducting layers are concentrically wrapped around the central axis of the body and alternatingly arranged along a transaxial direction of the insulating body. At least one conducting layer is wrapped concentrically around the central axis of the body for less than 360° such that ends of the at least one conducting layer are spaced apart.Type: GrantFiled: December 23, 2013Date of Patent: December 9, 2014Assignee: ABB Research Ltd.Inventors: Kenneth Johansson, Robert Stahl
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Patent number: 8724659Abstract: A packet forwarding unit such as a Digital Subscriber Line Access Multiplexer (DSLAM) receives Ethernet packets carrying real-time information and forwards the information therein on output lines such as Asymmetric Digital Subscriber Lines (ADSLs). The DSLAM includes a clock device having an extraction unit and an adaptive clock. The extraction unit analyzes received packets to select streams of received packets from one destination to one user, and the adaptive clock generates a reference clock signal according to the arrival times of packets in the selected streams. The clock signal is sent to time reference units in DSL modems for the output lines.Type: GrantFiled: May 11, 2005Date of Patent: May 13, 2014Assignee: Telefonaktiebolaget L M Ericsson (Publ)Inventors: Tore Andre, Anders Lindblad, Kenneth Johansson
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Publication number: 20140110151Abstract: A lead-trough device for an electrical conductor, which structure includes an insulating body arranged for housing the electrical conductor along a central axis of the insulating body. Further, the lead-trough structure includes insulating layers and conducting layers arranged on the inside of the insulating body, which insulating layers and conducting layers are concentrically wrapped around the central axis of the body and alternatingly arranged along a transaxial direction of the insulating body. At least one conducting layer is wrapped concentrically around the central axis of the body for less than 360° such that ends of the at least one conducting layer are spaced apart.Type: ApplicationFiled: December 23, 2013Publication date: April 24, 2014Inventors: Kenneth Johansson, Robert Stahl
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Patent number: 8017710Abstract: The present invention relates to a crosslinkable high pressure polyethylene composition containing ethylene silane copolymer resin having a content of silane of about 0.1 to 10 weight % and at least one silanol condensation catalyst. The invention further relates to a process for the preparation thereof, to a pipe made of said composition and to the use of the composition as an insulation for a cable.Type: GrantFiled: August 28, 2004Date of Patent: September 13, 2011Assignee: Borealis Technology OyInventors: Bernt-Åke Sultan, Jeroen Oderkerk, Kenneth Johansson, Jonas Jungkvist
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Patent number: 7834115Abstract: The present invention relates to an improved method for preparing an ethylene-silane copolymer comprising hydrolysable silane groups by radical-initiated polymerisation of ethylene and an olefinically unsaturated silane compound, such as vinyl trimethoxysilane (VTMS). Said method is performed in a multi-zone reactor comprising two or more reaction zones, wherein advantageously essentially all of the silane compound is introduced into the first reaction zone to provide a higher conversion of silane monomer into polymer.Type: GrantFiled: November 15, 2007Date of Patent: November 16, 2010Assignee: Borealis Technology OyInventors: Kenneth Johansson, Roger Carlsson
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Patent number: 7759910Abstract: A high voltage AC transmission cable system for transmitting power between two points, each connected to one or more power networks, and a method to operate the system. At least one transformer is arranged at each end of the AC transmission cable, wherein at least one of the transformers is arranged to operate the transformer at a voltage whereby losses due to reactive power transport and dielectric losses are minimized. The AC cable is run at a variable voltage regulated such that the voltage is a function of the load for the transmission cable. This operating voltage is not necessarily the same as the nominal voltages in the connection points. A control and communication system and a graphical user interface for carrying out the method are also provided.Type: GrantFiled: September 13, 2004Date of Patent: July 20, 2010Assignee: ABB Research Ltd.Inventors: Sture Lindahl, Kenneth Johansson, Udo Fromm, Stefan Johansson
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Publication number: 20100041840Abstract: The present invention relates to a method for preparing an unsaturated ethylene-diene copolymer by high pressure radical-initiated polymerisation, said method providing an improved conversion of added diene into pendant vinyl groups.Type: ApplicationFiled: November 6, 2007Publication date: February 18, 2010Inventors: Kenneth Johansson, Peter Rydin, Annika Smedberg
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Publication number: 20090020749Abstract: The present invention relates to a crosslinkable polymer composition which is useful for the preparation of semiconductive layers of electric cables, the polymer composition comprising (a) an unsaturated polyolefm having at least 0.15 vinyl groups/1000 carbon atoms and (b) carbon black.Type: ApplicationFiled: June 1, 2006Publication date: January 22, 2009Applicant: BOREALIS TECHNOLOGY OYInventors: Karl-Michael Jager, Kenneth Johansson