Patents by Inventor Klaus Fiederer

Klaus Fiederer 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: 10354822
    Abstract: An electrical switch for an electric power tool. The electrical switch has a contact system that can be switched between an off position and an on position, and having a movable actuating means or switching the contact system. The actuating means comprises a plunger and a contact piece. The contact piece acts on the contact system for the purpose of switching. A coupling element is provided, such that the plunger can be brought into and out of interaction with the contact piece. The interaction is effected such that it is made possible for the contact system to be switched into the on position and the off position by means of the plunger, and for the contact system to be switched into the off position independently of the plunger.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: July 16, 2019
    Assignee: Marquardt Verwaltungs-GmbH
    Inventors: Klaus Fiederer, Daniel Hafen, Frank Baumgaertner, Frank Hacke, Alexander Ruf, Clemens Lauer
  • Patent number: 10033256
    Abstract: A device for reversing the direction of rotation and/or for adjusting the carbon brushes for a reversible electric motor, in particular for an electric hand tool, with a base and with a mount, which is mounted pivotably on the base and on which brushholders for the carbon brushes wiping over the collector of the electric motor are arranged. The electric motor can be driven by means of power electronics, such as a pulse width controller, a phase gating controller, a phase chopping controller or the like. The power electronics are arranged on the base and/or on the mount. The device furthermore has fixed contacts and switching contacts, which interact with alternate contact-making for reversing the direction of rotation of the electric motor as the mount is pivoted.
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: July 24, 2018
    Assignee: Marquardt GmbH
    Inventors: Andreas Fuchs, Klaus Fiederer, Lars Girsberger, Emiliano Villanova
  • Publication number: 20160293369
    Abstract: An electrical switch for an electric power tool. The electrical switch has a contact system that can be switched between an off position and an on position, and having a movable actuating means for switching the contact system. The actuating means comprises a plunger and a contact piece. The contact piece acts on the contact system for the purpose of switching. A coupling element is provided, such that the plunger can be brought into and out of interaction with the contact piece. The interaction is effected such that it is made possible for the contact system to be switched into the on position and the off position by means of the plunger, and for the contact system to be switched into the off position independently of the plunger.
    Type: Application
    Filed: April 14, 2016
    Publication date: October 6, 2016
    Applicant: MARQUARDT VERWALTUNGS-GMBH
    Inventors: Klaus FIEDERER, Daniel HAFEN, Frank BAUMGAERTNER, Frank HACKE, Alexander RUF, Clemens LAUER
  • Patent number: 9071119
    Abstract: A device for reversing the direction of rotation and/or for adjusting the carbon brushes for a reversible electric motor, in particular for an electric hand tool, with a base and with a mount, which is mounted pivotably on the base and on which brushholders for the carbon brushes wiping over the collector of the electric motor are arranged. The electric motor can be driven by means of power electronics, such as a pulse width controller, a phase gating controller, a phase chopping controller or the like. The power electronics are arranged on the base and/or on the mount. The device furthermore has fixed contacts and switching contacts, which interact with alternate contact-making for reversing the direction of rotation of the electric motor as the mount is pivoted.
    Type: Grant
    Filed: July 22, 2011
    Date of Patent: June 30, 2015
    Assignee: Marquardt GmbH
    Inventors: Andreas Fuchs, Klaus Fiederer, Lars Girsberger, Emiliano Villanova
  • Publication number: 20150180308
    Abstract: A device for reversing the direction of rotation and/or for adjusting the carbon brushes for a reversible electric motor, in particular for an electric hand tool, with a base and with a mount, which is mounted pivotably on the base and on which brushholders for the carbon brushes wiping over the collector of the electric motor are arranged. The electric motor can be driven by means of power electronics, such as a pulse width controller, a phase gating controller, a phase chopping controller or the like. The power electronics are arranged on the base and/or on the mount. The device furthermore has fixed contacts and switching contacts, which interact with alternate contact-making for reversing the direction of rotation of the electric motor as the mount is pivoted.
    Type: Application
    Filed: March 4, 2015
    Publication date: June 25, 2015
    Inventors: Andreas FUCHS, Klaus FIEDERER, Lars GIRSBERGER, Emiliano VILLANOVA
  • Patent number: 8629363
    Abstract: An electrical switch having a contact system including at least one fixed contact and a switching contact. The switch has an actuating element for acting in switching fashion on the contact system and a switching slide which bears the switching contact and is moveable in a movement direction between two positions, wherein in one position the switching contact is remote from the fixed contact and in the other position the switching contact bears against the fixed contact. The switch has an actuating slide which is moveable by virtue of the actuating element and is coupled to the switching slide by an elastic element. The switch includes a latching mechanism which interacts with the switching slide, such that the switching slide can be switched over between the two positions on actuation of the actuating element with a type of snap-action movement.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: January 14, 2014
    Assignee: Marquardt GmbH
    Inventors: Edgar Pohl, Klaus Fiederer, Alfons Steidle, Emiliano Villanova
  • Patent number: 8188395
    Abstract: The invention relates to an electrical switch for an electrical appliance, in particular for an electrical tool, such as a drill, a grinder, a saw, a plane, an angle grinder or the like, and having a housing. The switch has a contact system which is located in the housing, and electrical connections, which lead into the housing and/or are located in the housing, for electrical supply lines to the contact system. Furthermore, the switch may have an operating member for switching action on the contact system, with the contact system being operatively connected to the operating member by means of an elastic element. The electrical connections have seals.
    Type: Grant
    Filed: August 8, 2008
    Date of Patent: May 29, 2012
    Assignee: Marquardt GmbH
    Inventors: Alfons Steidle, Klaus Fiederer
  • Publication number: 20120013205
    Abstract: A device for reversing the direction of rotation and/or for adjusting the carbon brushes for a reversible electric motor, in particular for an electric hand tool, with a base and with a mount, which is mounted pivotably on the base and on which brushholders for the carbon brushes wiping over the collector of the electric motor are arranged. The electric motor can be driven by means of power electronics, such as a pulse width controller, a phase gating controller, a phase chopping controller or the like. The power electronics are arranged on the base and/or on the mount. The device furthermore has fixed contacts and switching contacts, which interact with alternate contact-making for reversing the direction of rotation of the electric motor as the mount is pivoted.
    Type: Application
    Filed: July 22, 2011
    Publication date: January 19, 2012
    Applicant: Marquardt GmbH
    Inventors: Andreas FUCHS, Klaus Fiederer, Lars Girsberger, Emiliano Villanova
  • Patent number: 7764502
    Abstract: A control device, in particular an electrical switch for use for an electrical tool such as a rechargeable-battery and/or plug-powered electrical tool having an electric motor. The switch has a housing for holding at least one heat-generating component such as a power transistor, a MOSFET, a triac or the like, which is arranged in particular in an electrical circuit arrangement which, for example, is used for open-loop and/or closed-loop control of the electric motor by appropriate open-loop and/or closed-loop control of the electrical load current flowing through the component to the electric motor. A means for thermal conduction is connected on the one hand to the housing of the electrical switch, and/or to the heat-generating component, in particular to the power semiconductor which is located in the housing, and on the other hand to a cooled area which is associated with the switch.
    Type: Grant
    Filed: February 5, 2009
    Date of Patent: July 27, 2010
    Assignee: Marquardt GmbH
    Inventors: Tino Erb, Dirk Pfeiffer, Klaus Fiederer
  • Publication number: 20090213545
    Abstract: A control device, in particular an electrical switch for use for an electrical tool such as a rechargeable-battery and/or plug-powered electrical tool having an electric motor. The switch has a housing for holding at least one heat-generating component such as a power transistor, a MOSFET, a triac or the like, which is arranged in particular in an electrical circuit arrangement which, for example, is used for open-loop and/or closed-loop control of the electric motor by appropriate open-loop and/or closed-loop control of the electrical load current flowing through the component to the electric motor. A means for thermal conduction is connected on the one hand to the housing of the electrical switch, and/or to the heat-generating component, in particular to the power semiconductor which is located in the housing, and on the other hand to a cooled area which is associated with the switch.
    Type: Application
    Filed: February 5, 2009
    Publication date: August 27, 2009
    Applicant: Marquardt GmbH
    Inventors: Tino Erb, Dirk Pfeiffer, Klaus Fiederer
  • Publication number: 20090026052
    Abstract: The invention relates to an electrical switch for an electrical appliance, in particular for an electrical tool, such as a drill, a grinder, a saw, a plane, an angle grinder or the like, and having a housing. The switch has a contact system which is located in the housing, and electrical connections, which lead into the housing and/or are located in the housing, for electrical supply lines to the contact system. Furthermore, the switch may have an operating member for switching action on the contact system, with the contact system being operatively connected to the operating member by means of an elastic element. The electrical connections have seals.
    Type: Application
    Filed: August 8, 2008
    Publication date: January 29, 2009
    Applicant: Marquardt GmbH
    Inventors: Alfons Steidle, Klaus Fiederer