Patents by Inventor Wilhelm F. HOFMANN

Wilhelm F. HOFMANN 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 monitoring the state of a device and device
    Patent number: 11959469
    Abstract: A method monitors the state of a device having a first drive cylinder for receiving hydraulic fluid and a first drive piston which is movably arranged in the first drive cylinder. The method determines a speed of the first drive piston, establishes a difference between the determined speed of the first drive piston and an expected speed of the first drive piston, and determines a faulty state as a function of the difference established between the determined speed of the first drive piston and the expected speed of the first drive piston.
    Type: Grant
    Filed: August 20, 2020
    Date of Patent: April 16, 2024
    Assignee: Putzmeister Engineering GmbH
    Inventors: Carl Wiesenack, Benjamin Hoelzle, Michael Schaefer, Wolf-Michael Petzold, Jan-Martin Veit, Wilhelm F. Hofmann
  • Method for Monitoring the State of a Device and Device
    Publication number: 20220307490
    Abstract: A method monitors the state of a device having a first drive cylinder for receiving hydraulic fluid and a first drive piston which is movably arranged in the first drive cylinder. The method determines a speed of the first drive piston, establishes a difference between the determined speed of the first drive piston and an expected speed of the first drive piston, and determines a faulty state as a function of the difference established between the determined speed of the first drive piston and the expected speed of the first drive piston.
    Type: Application
    Filed: August 20, 2020
    Publication date: September 29, 2022
    Inventors: Carl WIESENACK, Benjamin HOELZLE, Michael SCHAEFER, Wolf-Michael PETZOLD, Jan-Martin VEIT, Wilhelm F. HOFMANN