Patents by Inventor Franz Fleckenstein

Franz Fleckenstein 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: 6672056
    Abstract: The invention relates to a device for cooling at least one component by hydraulic fluid from a hydraulic circuit. The hydraulic circuit includes a hydraulic pump, at least one user of hydraulic energy, and a reservoir. The component is connected into the hydraulic circuit between a heat exchanger and the intake side of the pump. The component is connected into a suction line that connects the reservoir with the pump. Between the component and the pump there is a control valve connected on the output side to a bypass suction line connected with the reservoir. In a first position of the control valve, the suction line is closed and the bypass suction line is open. In a second position of the control valve, the suction line is at least partly open. The heat exchanger can be connected into the suction line or into the return line.
    Type: Grant
    Filed: May 16, 2002
    Date of Patent: January 6, 2004
    Assignee: Linde Aktiengesellschaft
    Inventors: Jürgen Roth, Franz Fleckenstein
  • Publication number: 20030024241
    Abstract: The invention relates to a device for cooling at least one component by hydraulic fluid from a hydraulic circuit. The hydraulic circuit includes a hydraulic pump, at least one user of hydraulic energy, and a reservoir. The component is connected into the hydraulic circuit between a heat exchanger and the intake side of the pump. The component is connected into a suction line that connects the reservoir with the pump. Between the component and the pump there is a control valve connected on the output side to a bypass suction line connected with the reservoir. In a first position of the control valve, the suction line is closed and the bypass suction line is open. In a second position of the control valve, the suction line is at least partly open. The heat exchanger can be connected into the suction line or into the return line.
    Type: Application
    Filed: May 16, 2002
    Publication date: February 6, 2003
    Inventors: Jurgen Roth, Franz Fleckenstein
  • Patent number: 5919109
    Abstract: A drive axle has a drive motor and two reduction gearsets located on the ends of the axle to drive respective wheels. The input stages of the reduction gearsets are formed as common single-stage planetary gear train. The planetary gear train is connected to the final stages of the reduction gearsets by respective output shafts. The planetary gear train has a rotatable sun wheel, a rotatable planet carrier and a rotatable ring gear. In one embodiment, the sun wheel of the planetary gear train is in a drive connection with an input shaft, and the planet carrier is connected to a first output shaft, and the ring gear of the planetary gear train is connected to a second output shaft. The output shafts are each formed as a sun wheel of the reduction gearsets. The output of the first reduction gearset is via the planet carrier and the ring gear of the first reduction gearset is stationary relative to the axle housing.
    Type: Grant
    Filed: October 16, 1997
    Date of Patent: July 6, 1999
    Assignee: Linde Aktiengesellschaft
    Inventor: Franz Fleckenstein