Patents by Inventor Erich Ludewig

Erich Ludewig 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: 11261998
    Abstract: A method for switching over a solenoid valve having a movable valve body between a first position and a second position, wherein the method comprises at least the following method steps: a) adjusting a switching current to a pre-energization current intensity, in which the valve body remains in the present position, for a first time interval, and b) adjusting the switching current to a first switchover current intensity, which introduces a switchover movement of the valve body, for a second time interval.
    Type: Grant
    Filed: April 5, 2018
    Date of Patent: March 1, 2022
    Assignee: Robert Bosch GmbH
    Inventors: Dirk Bodenschatz, Erich Ludewig, Dirk Foerch, Steffen Benzler
  • Publication number: 20200378528
    Abstract: A method for switching over a solenoid valve having a movable valve body between a first position and a second position, wherein the method comprises at least the following method steps: a) adjusting a switching current to a pre-energization current intensity, in which the valve body remains in the present position, for a first time interval, and b) adjusting the switching current to a first switchover current intensity, which introduces a switchover movement of the valve body, for a second time interval.
    Type: Application
    Filed: April 5, 2018
    Publication date: December 3, 2020
    Inventors: Dirk Bodenschatz, Erich Ludewig, Dirk Foerch, Steffen Benzler
  • Patent number: 10184584
    Abstract: A magnetic valve device includes a valve receiving device and a valve insert of a magnetic valve which is received in the valve receiving device. A high pressure resistance is obtained in one of the modes of embodiment. The magnetic valve device includes either a pressure mechanism configured to press the valve insert against the valve receiving element or a sealing element arranged in a notch in the valve insert or a sealing element arranged between an axial filter and the valve insert.
    Type: Grant
    Filed: November 16, 2010
    Date of Patent: January 22, 2019
    Assignee: Robert Bosch GmbH
    Inventors: Klaus Heyer, Frank Kaestner, Erich Ludewig, Massimiliano Ambrosi, Fakheredine Keyrouz, Rene Schepp, Norbert Alaze
  • Publication number: 20140048732
    Abstract: A magnetic valve device includes a valve receiving device and a valve insert of a magnetic valve which is received in the valve receiving device. A high pressure resistance is obtained in one of the modes of embodiment. The magnetic valve device includes either a pressure mechanism configured to press the valve insert against the valve receiving element or a sealing element arranged in a notch in the valve insert or a sealing element arranged between an axial filter and the valve insert.
    Type: Application
    Filed: November 16, 2010
    Publication date: February 20, 2014
    Applicant: Robert Bosch GmbH
    Inventors: Klaus Heyer, Frank Kaestner, Erich Ludewig, Massimiliano Ambrosi, Fakheredine Keyrouz, Rene Schepp, Norbert Alaze
  • Patent number: 7661652
    Abstract: An electromagnetically actuatable valve for brake systems in motor vehicles, comprises a hydraulic part and an electric part. The valve is partially placed inside a valve block, in which an inlet borehole and an outlet borehole for a hydraulic fluid are made. The hydraulic part comprises a valve element inside of which a transversal borehole is made that communicates with the inlet borehole. In addition, a number of longitudinal boreholes, which are connected to the outlet borehole, are made in the valve element. The transversal borehole and the longitudinal boreholes are connected via a closing element. The valve enables a controlled opening and closing of the closing element thereby making a low-noise switching of the valve possible.
    Type: Grant
    Filed: September 21, 2005
    Date of Patent: February 16, 2010
    Assignee: Robert Bosch GmbH
    Inventors: Sezgin Acar, Jens Kolarsky, Boris Buchtala, Erich Ludewig, Dietmar Sommer, Massimiliano Ambrosi, Valentin Schubitschew, Ingo Buchenau, Rafael Gonzalez Romero, Dietmar Kratzer, Michael Hilden
  • Publication number: 20080093573
    Abstract: An electromagnetically actuatable valve for brake systems in motor vehicles, comprises a hydraulic part and an electric part. The valve is partially placed inside a valve block, in which an inlet borehole and an outlet borehole for a hydraulic fluid are made. The hydraulic part comprises a valve element inside of which a transversal borehole is made that communicates with the inlet borehole. In addition, a number of longitudinal boreholes, which are connected to the outlet borehole, are made in the valve element. The transversal borehole and the longitudinal boreholes are connected via a closing element. The valve enables a controlled opening and closing of the closing element thereby making a low-noise switching of the valve possible.
    Type: Application
    Filed: September 21, 2005
    Publication date: April 24, 2008
    Inventors: Sezgin Acar, Jens Kolarsky, Boris Buchtala, Erich Ludewig, Dietmar Sommer, Massimiliano Ambrosi, Valentin Schubitschew, Ingo Buchenau, Rafael Romero, Dietmar Kratzer, Michael Hilden
  • Patent number: 6069784
    Abstract: An apparatus and a method for driving a solenoid valve, which includes a coil and a movable armature. To move the armature, current and/or voltage is applied to the coil in a clocked manner. By varying the driving, the solenoid valve can be operated optionally as a control valve or as a relief valve.
    Type: Grant
    Filed: January 9, 1998
    Date of Patent: May 30, 2000
    Assignee: Robert Bosch GmbH
    Inventors: Berend-Wilhelm Doden, Michael Friedow, Michael Mettner, Martin Ohler, Gunther Hohl, Erich Ludewig, Dietmar Sommer
  • Patent number: 5468057
    Abstract: A hydraulic unit for wheel slip control, which is located between a master cylinder and wheel brake cylinders. Reflection damping devices are installed in main brake lines located between the hydraulic unit and the master cylinder which damp pressure waves that originate at control valves of the hydraulic unit. When the control valves are triggered in the wheel slip control mode the pressure waves are largely kept away from the master cylinder. By the means of length adaptation of the main brake lines, the brake lines can also contribute to the damping.
    Type: Grant
    Filed: February 24, 1995
    Date of Patent: November 21, 1995
    Assignee: Robert Bosch GmbH
    Inventors: Friedrich Megerle, Guenther Hohl, Erich Ludewig, Guenter Kaes
  • Patent number: 5417481
    Abstract: A hydraulic unit for wheel slip control, which is located between a master cylinder and wheel brake cylinders. Reflection damping devices are installed in main brake lines located between the hydraulic unit and the master cylinder which damp pressure waves that originate at control valves of the hydraulic unit. When the control valves are triggered in the wheel slip control mode the pressure waves are largely kept away from the master cylinder. By the means of length adaptation of the main brake lines, the brake lines can also contribute to the damping.
    Type: Grant
    Filed: April 21, 1993
    Date of Patent: May 23, 1995
    Assignee: Robert Bosch GmbH
    Inventors: Friedrich Megerle, Guenther Hohl, Erich Ludewig, Guenter Kaes