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).
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Patent number: 10354822Abstract: 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: GrantFiled: April 14, 2016Date of Patent: July 16, 2019Assignee: Marquardt Verwaltungs-GmbHInventors: Klaus Fiederer, Daniel Hafen, Frank Baumgaertner, Frank Hacke, Alexander Ruf, Clemens Lauer
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Patent number: 10033256Abstract: 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: GrantFiled: March 4, 2015Date of Patent: July 24, 2018Assignee: Marquardt GmbHInventors: Andreas Fuchs, Klaus Fiederer, Lars Girsberger, Emiliano Villanova
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Publication number: 20160293369Abstract: 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: ApplicationFiled: April 14, 2016Publication date: October 6, 2016Applicant: MARQUARDT VERWALTUNGS-GMBHInventors: Klaus FIEDERER, Daniel HAFEN, Frank BAUMGAERTNER, Frank HACKE, Alexander RUF, Clemens LAUER
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Patent number: 9071119Abstract: 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: GrantFiled: July 22, 2011Date of Patent: June 30, 2015Assignee: Marquardt GmbHInventors: Andreas Fuchs, Klaus Fiederer, Lars Girsberger, Emiliano Villanova
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Publication number: 20150180308Abstract: 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: ApplicationFiled: March 4, 2015Publication date: June 25, 2015Inventors: Andreas FUCHS, Klaus FIEDERER, Lars GIRSBERGER, Emiliano VILLANOVA
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Patent number: 8629363Abstract: 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: GrantFiled: October 22, 2012Date of Patent: January 14, 2014Assignee: Marquardt GmbHInventors: Edgar Pohl, Klaus Fiederer, Alfons Steidle, Emiliano Villanova
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Patent number: 8188395Abstract: 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: GrantFiled: August 8, 2008Date of Patent: May 29, 2012Assignee: Marquardt GmbHInventors: Alfons Steidle, Klaus Fiederer
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Publication number: 20120013205Abstract: 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: ApplicationFiled: July 22, 2011Publication date: January 19, 2012Applicant: Marquardt GmbHInventors: Andreas FUCHS, Klaus Fiederer, Lars Girsberger, Emiliano Villanova
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Patent number: 7764502Abstract: 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: GrantFiled: February 5, 2009Date of Patent: July 27, 2010Assignee: Marquardt GmbHInventors: Tino Erb, Dirk Pfeiffer, Klaus Fiederer
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Publication number: 20090213545Abstract: 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: ApplicationFiled: February 5, 2009Publication date: August 27, 2009Applicant: Marquardt GmbHInventors: Tino Erb, Dirk Pfeiffer, Klaus Fiederer
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Publication number: 20090026052Abstract: 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: ApplicationFiled: August 8, 2008Publication date: January 29, 2009Applicant: Marquardt GmbHInventors: Alfons Steidle, Klaus Fiederer