Patents by Inventor David Karlén

David Karlén 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: 10347436
    Abstract: A switching device for breaking an electric current including a main contact carrier, movable and stationary main contacts, the movable contact attached to the main contact carrier, an arcing contact carrier, a movable and stationary arcing contacts, the movable arcing contact attached to the arcing contact carrier and the stationary arcing contact arranged in parallel with the stationary main contact, and an actuating unit for the main and arcing contact carriers between open and close position at an actuating distance, wherein there are separation distances between the stationary and movable contacts of the main and arcing contact units respectively when the current is interrupted. The switching device further includes a first rack and a first gear for actuating the arcing contact carrier so that, when interrupting the current, a separation distance between the arcing contacts is longer than a separation distance between the main contacts.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: July 9, 2019
    Assignee: ABB Schweiz AG
    Inventors: Gunnar Johansson, David Karlén, Jonathan Jonsson, Markus Angell, Mats Henning Johansson
  • Publication number: 20190066939
    Abstract: A switching device for breaking an electric current including a main contact carrier, movable and stationary main contacts, the movable contact attached to the main contact carrier, an arcing contact carrier, a movable and stationary arcing contacts, the movable arcing contact attached to the arcing contact carrier and the stationary arcing contact arranged in parallel with the stationary main contact, and an actuating unit for the main and arcing contact carriers between open and close position at an actuating distance, wherein there are separation distances between the stationary and movable contacts of the main and arcing contact units respectively when the current is interrupted. The switching device further includes a first rack and a first gear for actuating the arcing contact carrier so that, when interrupting the current, a separation distance between the arcing contacts is longer than a separation distance between the main contacts.
    Type: Application
    Filed: October 8, 2015
    Publication date: February 28, 2019
    Inventors: Gunnar Johansson, David Karlén, Jonathan Jonsson, Markus Angell, Mats Henning Johansson
  • Patent number: 9928971
    Abstract: An electrical contact tip for switching applications. The contact tip includes a body having a first layer and a second layer. The first layer arranged on the second layer and adapted to come in contact with a corresponding contact tip during switching operations. The first and second layers consist of Ag-composites of one or more elements, compounds or alloys, where the hardness of the first layer is lower than the hardness of the second layer.
    Type: Grant
    Filed: April 16, 2014
    Date of Patent: March 27, 2018
    Assignee: ABB Schweiz AG
    Inventors: Gunnar Johansson, David Karlén, Erik Johansson, Reinhard Simon
  • Publication number: 20170117102
    Abstract: An electrical contact tip for switching applications. The contact tip includes a body having a first layer and a second layer. The first layer arranged on the second layer and adapted to come in contact with a corresponding contact tip during switching operations. The first and second layers consist of Ag-composites of one or more elements, compounds or alloys, where the hardness of the first layer is lower than the hardness of the second layer.
    Type: Application
    Filed: April 16, 2014
    Publication date: April 27, 2017
    Inventors: Gunnar Johansson, David Karlén, Erik Johansson, Reinhard Simon
  • Patent number: 9455098
    Abstract: An electrical circuit switch including: a first movable element configured for being movable by a force applied to the first movable element, the force having a direction parallel to a first axis; and a second movable element including a movable contact and being configured for, by means of the force, moving the movable contact in parallel to a second axis between an open and a closed position, corresponding to the switch opening or closing an electrical circuit. The first axis forms an angle to the second axis and the first movable element and the second movable element are pivotally arranged to each other in a first joint.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: September 27, 2016
    Assignee: ABB Schweiz AG
    Inventors: Bjorn Lunden, David Karlen, Arne Trangard, Stefan Lunderius
  • Patent number: 9324519
    Abstract: A low-voltage switching device including a plurality of arc-extinguishing chambers, wherein each of the arc-extinguishing chambers encloses a contacting unit including a stationary contact and a movable contact and arcs are formed when the movable contact is disconnected to the stationary contact, each of the arc-extinguishing chamber including a plurality of U-shaped arc extinguishing plates arranged for splitting, guiding and cooling the arc formed between the contacts and sidewalls provided with guiding means for guiding the arms of the arc extinguishing plates. The guiding means includes a plurality of supporting plates and the supporting plates are arranged protruding towards interior of the arc-extinguishing chamber for receiving the arms of the arc-extinguishing plates and for providing electrical isolation between arms of two adjacent arc extinguishing plates.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: April 26, 2016
    Assignee: ABB Technology Ltd
    Inventor: David Karlen
  • Publication number: 20150262774
    Abstract: A low-voltage switching device including a plurality of arc-extinguishing chambers , wherein each of the arc-extinguishing chambers encloses a contacting unit including a stationary contact and a movable contact and arcs are formed when the movable contact is disconnected to the stationary contact, each of the arc-extinguishing chamber including a plurality of U-shaped arc extinguishing plates arranged for splitting, guiding and cooling the arc formed between the contacts and sidewalls provided with guiding means for guiding the arms of the arc extinguishing plates. The guiding means includes a plurality of supporting plates and the supporting plates are arranged protruding towards interior of the arc-extinguishing chamber for receiving the arms of the arc-extinguishing plates and for providing electrical isolation between arms of two adjacent arc extinguishing plates.
    Type: Application
    Filed: May 30, 2012
    Publication date: September 17, 2015
    Inventor: David Karlen
  • Publication number: 20150054607
    Abstract: An electrical circuit switch including: a first movable element configured for being movable by a force applied to the first movable element, the force having a direction parallel to a first axis; and a second movable element including a movable contact and being configured for, by means of the force, moving the movable contact in parallel to a second axis between an open and a closed position, corresponding to the switch opening or closing an electrical circuit. The first axis forms an angle to the second axis and the first movable element and the second movable element are pivotally arranged to each other in a first joint.
    Type: Application
    Filed: September 30, 2014
    Publication date: February 26, 2015
    Inventors: Bjorn Lunden, David Karlen, Arne Trangard, Stefan Lunderius
  • Patent number: 8742875
    Abstract: A contactor has a frame including a base unit, a coil provided on the base unit and including input terminals, and a module including a circuit board for electrically controlling the coil, the circuit board including input terminals for power supply and output terminals for providing an electrical connection to the coil. The contactor further includes a fastening device arranged for mechanically and electrically connecting one of the output terminals to a corresponding input terminal of the coil, and the module is designed such that the fastening device connects the output terminal of the circuit board to the input terminal of the coil while at the same time the module is connected to the frame.
    Type: Grant
    Filed: June 7, 2012
    Date of Patent: June 3, 2014
    Assignee: ABB AB
    Inventors: Anders Eriksson, David Karlén, Lars Eriksson, Ove Coman
  • Patent number: 8314670
    Abstract: A mechanical switching device including a base member, at least one pair of elongated conductor members mounted on the base member, each conductor member with a conductor end, wherein the conductor ends of the pair of conductor members are separated by a gap, a middle member mounted on the base member, a switch member adapted to establish and disestablish an electrical connection between the conductor ends of the pair of conductor members. Each of the conductor members includes an opening in which a respective protruding part is received. The protruding parts are provided on and extend from the middle member so that the conductor members are electrically isolated and protected from the surrounding environment around the device.
    Type: Grant
    Filed: February 3, 2012
    Date of Patent: November 20, 2012
    Assignee: ABB AB
    Inventors: Mats Johansson, David Karlén
  • Publication number: 20120242433
    Abstract: A contactor has a frame including a base unit, a coil provided on the base unit and including input terminals, and a module including a circuit board for electrically controlling the coil, the circuit board including input terminals for power supply and output terminals for providing an electrical connection to the coil. The contactor further includes a fastening device arranged for mechanically and electrically connecting one of the output terminals to a corresponding input terminal of the coil, and the module is designed such that the fastening device connects the output terminal of the circuit board to the input terminal of the coil while at the same time the module is connected to the frame.
    Type: Application
    Filed: June 7, 2012
    Publication date: September 27, 2012
    Inventors: Anders Eriksson, David Karlén, Lars Eriksson, Ove Coman
  • Publication number: 20120133463
    Abstract: A mechanical switching device including a base member, at least one pair of elongated conductor members mounted on the base member, each conductor member with a conductor end, wherein the conductor ends of the pair of conductor members are separated by a gap, a middle member mounted on the base member, a switch member adapted to establish and disestablish an electrical connection between the conductor ends of the pair of conductor members. Each of the conductor members includes an opening in which a respective protruding part is received. The protruding parts are provided on and extend from the middle member so that the conductor members are electrically isolated and protected from the surrounding environment around the device.
    Type: Application
    Filed: February 3, 2012
    Publication date: May 31, 2012
    Inventors: Mats Johansson, David Karlén
  • Publication number: 20120122333
    Abstract: A switching device including a connection housing. The connection housing includes a mechanism for receiving a cable and clamping mechanism for clamping the cable, the cable including one or more strands. The connection housing further includes a space provided between a wall of the switching device and an end portion of the cable when inserted in the mechanism for reception, whereby the one or more strands of the end portion of the cable are arranged with a free end thereof having a larger dimension than the dimension of the one or more strands at the clamping means of the connection housing.
    Type: Application
    Filed: January 25, 2012
    Publication date: May 17, 2012
    Inventors: Anders Eriksson, David Karlén
  • Publication number: 20070151199
    Abstract: A noise reducing joist system includes a joist hanger, a joist and a sheath surrounding a bottom portion, a lower end portion and lower end side portions of the joist, the sheath and joist inserted into the joist hanger. The joist and sheath are inserted into the joist hanger. The sheath interfaces with the joist hanger rather than the joist thereby reducing noise that may be created by a sliding that might occur between the joist end the joist hanger.
    Type: Application
    Filed: December 16, 2005
    Publication date: July 5, 2007
    Applicant: ROUNDA ENTERPRISES, LLC
    Inventor: David Karlen
  • Patent number: D780698
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: March 7, 2017
    Assignee: ABB Schweiz AG
    Inventors: David Karlen, Jonathan Jonsson
  • Patent number: D781242
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: March 14, 2017
    Assignee: ABB Schweiz AG
    Inventors: David Karlen, Anders Eriksson
  • Patent number: D781243
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: March 14, 2017
    Assignee: ABB Schweiz AG
    Inventors: David Karlen, Anders Eriksson
  • Patent number: D788714
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: June 6, 2017
    Assignee: ABB Schweiz AG
    Inventors: David Karlen, Anders Eriksson