Patents by Inventor Ralf Materna

Ralf Materna 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).

  • Abrasive means
    Patent number: 9969057
    Abstract: An abrasive member includes an abrasive member base and a plurality of abrasive particles applied to the abrasive member base. At least a large proportion of the abrasive particles form an abrasive edge unit with an abrasive edge inclined at an angle between 0° and 90° relative to a defined working direction.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: May 15, 2018
    Assignee: Robert Bosch GmbH
    Inventors: Beat Eugster, Georg Hejtmann, Thomas Rohner, Roman Zaech, Thomas Kipfer, Ralf Materna, Adrian Schoch, Jiri Misak, Petra Stedile, Peter Eggenberger, Stefan Fuenfschilling
  • Abrasive Means
    Publication number: 20160144480
    Abstract: An abrasive member includes an abrasive member base and a plurality of abrasive particles applied to the abrasive member base. At least a large proportion of the abrasive particles form an abrasive edge unit with an abrasive edge inclined at an angle between 0° and 90° relative to a defined working direction.
    Type: Application
    Filed: June 24, 2014
    Publication date: May 26, 2016
    Inventors: Beat Eugster, Georg Hejtmann, Thomas Rohner, Roman Zaech, Thomas Kipfer, Ralf Materna, Adrian Schoch, Jiri MIsak, Petra Stedile, Peter Eggenberger, Stefan Fuenfschilling
  • Machine tool, in particular hand-held machine tool
    Patent number: 9327377
    Abstract: A machine tool, for example a hand-held belt grinder, is subjected to high frequencies outside a working plane between an abrasive belt and a workpiece. In particular, the machine tool is subject to high frequencies in a free-running region of the belt, of an excitation actuator, in particular by a piezo element.
    Type: Grant
    Filed: August 29, 2011
    Date of Patent: May 3, 2016
    Assignee: Robert Bosch GmbH
    Inventors: Peter Keller-Sornig, Georg Hejtmann, Aldo Di Nicolantonio, Stefano Delfini, Ralf Materna, Adrian Schoch, Dieter Troendle
  • MACHINE TOOL, IN PARTICULAR HAND-HELD MACHINE TOOL
    Publication number: 20130331011
    Abstract: A machine tool, for example a hand-held belt grinder, is subjected to high frequencies outside a working plane between an abrasive belt and a workpiece. In particular, the machine tool is subject to high frequencies in a free-running region of the belt, of an excitation actuator, in particular by a piezo element.
    Type: Application
    Filed: August 29, 2011
    Publication date: December 12, 2013
    Applicant: Robert Bosch GmbH
    Inventors: Peter Keller-Sornig, Georg Hejtmann, Aldo Di Nicolantonio, Stefano Delfini, Ralf Materna, Adrian Schoch, Dieter Troendie