Patents by Inventor Ludwig Freudenreich

Ludwig Freudenreich 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).

  • Method for automatic sequential coating of workpieces
    Patent number: 5152841
    Abstract: A method and apparatus for controlling the sequential coating of motor-vehicle bodies using a preprogrammed painter-robot is provided. As a result of wear, the signal/response delay times of valves and other control elements deviate from the information stored in the program. According to the subject invention, the actual signal/response delay time is measured and compared with the stored information stored in the program. In the event of unacceptable deviations in the actual verses stored signal/response delay times, the actuating times controlled by the program are changed in response thereto, and signals warning of excessive actual delay time are given.
    Type: Grant
    Filed: April 26, 1988
    Date of Patent: October 6, 1992
    Assignees: Behr Industrieanlagen GmbH & Co., Daimler-Benz AG
    Inventors: Eberhard Medler, Siefried Phillipi, Kurt Vetter, Ludwig Freudenreich, Othmar Lippuner
  • Method for automatic sequential coating of workpieces
    Patent number: 4957782
    Abstract: A method and apparatus for controlling the sequential coating of motor-vehicle bodies using a preprogrammed painter-robot is provided. As a result of wear, the signal/response delay times of valves and other control elements deviate from the information stored in the program. According to the subject invention, the actual signal/response delay time is measured and compared with the stored information stored in the program. In the event of unacceptable deviations in the actual verses stored signal/response delay times, the actuating times controlled by the program are changed in response thereto, and signals warning of excessive actual delay time are given.
    Type: Grant
    Filed: January 29, 1990
    Date of Patent: September 18, 1990
    Assignees: Behr Industrieanlagen GmbH & Co., Daimler-Benz AG
    Inventors: Eberhard Medler, Siefried Phillipi, Kurt Vetter, Ludwig Freudenreich, Othmar Lippuner