Patents by Inventor Patrick Pettersson

Patrick Pettersson 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).

  • Effective charging by multiple contact points
    Patent number: 9419453
    Abstract: A charging coupling for connecting a robotic garden tool with a charging device may facilitate the charging of a battery of the robotic garden tool. The charging coupling may include a first charging contact and a second charging contact. The first charging contact may be a charging plate or a charging rod. The second charging contact may be provided with a row of resilient contact bars. The arrangement of the first charging contact and the second charging contact may be configured such that the resilient contact bars are pressed against the charging plate to provide multiple contact points.
    Type: Grant
    Filed: November 19, 2012
    Date of Patent: August 16, 2016
    Assignee: HUSQVARNA AB
    Inventors: Gunnar Andersson, Patrick Pettersson, Peter Hallin, Patrik Jägenstedt, Jonathan Björn
  • Method and system for guiding a robotic garden tool to a predetermined position
    Patent number: 8942862
    Abstract: The present invention relates to a method (400) and a system (100) for guiding a robotic garden tool to a predetermined position. The robotic garden tool includes a control unit (104) and a sensor unit (102) to detect guiding signals. The sensor unit (102) detects a first guiding signal (110) from a first signal source (106) and the robotic garden tool follows the first guiding signal (110) at a variable distance from the first signal source (106) towards the predetermined position. While within a predetermined distance (D) from the predetermined position, the sensor unit (102) detects a second guiding signal (112) from a second signal source (108). Within the predetermined distance (D), the robotic garden tool follows one of the first and the second guiding signals (110 or 112) towards the predetermined position at a pre-configured distance from the corresponding signal source.
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: January 27, 2015
    Assignee: Husqvarna AB
    Inventors: Olle Markusson, Gunnar Andersson, Johan Adolfsson, Patrick Pettersson, Johan Öster, Patrik Jägenstedt
  • Method and System for Guiding a Robotic Garden Tool to a Predetermined Position
    Publication number: 20130066484
    Abstract: The present invention relates to a method (400) and a system (100) for guiding a robotic garden tool to a predetermined position. The robotic garden tool includes a control unit (104) and a sensor unit (102) to detect guiding signals. The sensor unit (102) detects a first guiding signal (110) from a first signal source (106) and the robotic garden tool follows the first guiding signal (110) at a variable distance from the first signal source (106) towards the predetermined position. While within a predetermined distance (D) from the predetermined position, the sensor unit (102) detects a second guiding signal (112) from a second signal source (108). Within the predetermined distance (D), the robotic garden tool follows one of the first and the second guiding signals (110 or 112) towards the predetermined position at a pre-configured distance from the corresponding signal source.
    Type: Application
    Filed: March 17, 2010
    Publication date: March 14, 2013
    Applicant: HUSQVARNA AB
    Inventors: Olle Markusson, Gunnar Andersson, Johan Adolfsson, Patrick Pettersson, Johan Öster, Patrik Jägenstedt