Patents by Inventor Karl-Heinz Schwedhelm

Karl-Heinz Schwedhelm 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).

  • TRUCK-MOUNTED CONCRETE PUMP
    Publication number: 20230302682
    Abstract: A hydraulically driven concrete pump system includes a distribution boom, a support system, and a concrete pump. A first hydraulic pump is configured to drive the concrete pump, and a combustion drive engine is configured to drive the first hydraulic pump. A second hydraulic pump is configured to drive the distribution boom and/or the support system, and an electric motor is configured to drive the second hydraulic pump.
    Type: Application
    Filed: August 6, 2021
    Publication date: September 28, 2023
    Inventors: Andreas Lehmann, Uwe Krischan, Karl-Heinz Schwedhelm, Johannes Henikl, Roland Schink, Reiner Vierkotten
  • TRUCK-MOUNTED CONCRETE PUMP
    Publication number: 20230295936
    Abstract: A power supply unit includes inputs for receiving electric energy from multiple electric energy sources. The power supply unit also includes outputs for delivering electric energy for operating working components of a truck-mounted concrete pump. The power supply unit is configured to control consumption of electrical energy from the electric energy sources.
    Type: Application
    Filed: August 6, 2021
    Publication date: September 21, 2023
    Inventors: Andreas Lehmann, Uwe Krischan, Karl-Heinz Schwedhelm, Johannes Henikl, Roland Schink, Reiner Vierkotten
  • Electrohydraulic control circuit for a large manipulator
    Patent number: 10900244
    Abstract: An electrohydraulic control circuit includes a hydraulically-operated drive assembly and an emergency valve. The hydraulically-operated drive assembly includes an electrically-actuated proportional valve and hydraulic operating lines. The proportional valve is connected to the hydraulic operating lines for actuation of the drive assembly in a normal operation mode. The proportional valve is also connected to a pressure supply line and to a return line. The emergency valve is connected to the hydraulic operating lines for actuation of the drive assembly in an emergency operation mode. In the emergency operation mode, the emergency valve is actuated via an emergency operating unit.
    Type: Grant
    Filed: April 10, 2017
    Date of Patent: January 26, 2021
    Assignee: SCHWING GMBH
    Inventors: Reiner Vierkotten, Johannes Henikl, Andreas Lehmann, Peter Przebinda, Karl-Heinz Schwedhelm
  • ELECTROHYDRAULIC CONTROL CIRCUIT FOR A LARGE MANIPULATOR
    Publication number: 20190119934
    Abstract: An electrohydraulic control circuit includes a hydraulically-operated drive assembly and an emergency valve. The hydraulically-operated drive assembly includes an electrically-actuated proportional valve and hydraulic operating lines. The proportional valve is connected to the hydraulic operating lines for actuation of the drive assembly in a normal operation mode. The proportional valve is also connected to a pressure supply line and to a return line. The emergency valve is connected to the hydraulic operating lines for actuation of the drive assembly in an emergency operation mode. In the emergency operation mode, the emergency valve is actuated via an emergency operating unit.
    Type: Application
    Filed: April 10, 2017
    Publication date: April 25, 2019
    Inventors: Reiner Vierkotten, Johannes Henikl, Andreas Lehmann, Peter Przebinda, Karl-Heinz Schwedhelm