Patents by Inventor Thomas Gundrum

Thomas Gundrum 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: 8205507
    Abstract: The invention relates to an ultrasonic sensor for measuring flow rates in liquid melts at high temperatures. The aim of the invention is to provide an ultrasonic sensor for carrying out local, continuous, reliable rate measurements in hot melts. To achieve this, the ultrasonic sensor contains an ultrasonic waveguide that is connected to the piezoelectric transducer and consists of a material with low acoustic damping properties in a temperature range relevant for the area of application of above 200 DEG C, said material being chemically resistant to the melt. In addition, the end face of the ultrasonic waveguide facing the melt is closed and can be wetted by the melt.
    Type: Grant
    Filed: June 10, 2008
    Date of Patent: June 26, 2012
    Assignee: Forschungszentrum Dresden-Rossendorf E.V.
    Inventors: Sven Eckert, Gunter Gerbeth, Thomas Gundrum
  • Patent number: 7950293
    Abstract: The invention relates to a method for measuring flow rates in liquid melts in a temperature range above 200 DEG C. using an ultrasonic generator and to an associated ultrasonic waveguide according to the ultrasonic Doppler method. The aim of the invention is to provide good signal incoupling and outcoupling. This is achieved by the preparation of the wettability of the end face of the ultrasonic waveguide before the measuring operation, subsequent direct incoupling of ultrasonic measuring signals into the melt at an angle that is not equal to 90 DEG, achieved by the immersion of the end face of the ultrasonic waveguide into the melt, outcoupling of the ultrasonic signals reflected in the melt via the end face of the ultrasonic waveguide and routing of said signals to an evaluation circuit. To prepare the wettability of the end face, the latter is mechanically and chemically cleaned and subsequently coated with a suitable material.
    Type: Grant
    Filed: June 10, 2008
    Date of Patent: May 31, 2011
    Assignee: Helmholtz-Zentrum Dresden, Rossendorf e.V.
    Inventors: Sven Eckert, Gunter Gerbeth, Thomas Gundrum
  • Publication number: 20100218617
    Abstract: The invention relates to a method for measuring flow rates in liquid melts in a temperature range above 200 DEG C. using an ultrasonic generator and to an associated ultrasonic waveguide according to the ultrasonic Doppler method. The aim of the invention is to provide good signal incoupling and outcoupling. This is achieved by the preparation of the wettability of the end face of the ultrasonic waveguide before the measuring operation, subsequent direct incoupling of ultrasonic measuring signals into the melt at an angle that is not equal to 90 DEG, achieved by the immersion of the end face of the ultrasonic waveguide into the melt, outcoupling of the ultrasonic signals reflected in the melt via the end face of the ultrasonic waveguide and routing of said signals to an evaluation circuit. To prepare the wettability of the end face, the latter is mechanically and chemically cleaned and subsequently coated with a suitable material.
    Type: Application
    Filed: June 10, 2008
    Publication date: September 2, 2010
    Applicant: FORSCHUNGSZENTRUM DRESDEN-ROSSENDORF E.V.
    Inventors: Sven Eckert, Gunter Gerbeth, Thomas Gundrum
  • Publication number: 20100218608
    Abstract: The invention relates to an ultrasonic sensor for measuring flow rates in liquid melts at high temperatures. The aim of the invention is to provide an ultrasonic sensor for carrying out local, continuous, reliable rate measurements in hot melts. To achieve this, the ultrasonic sensor contains an ultrasonic waveguide that is connected to the piezoelectric transducer and consists of a material with low acoustic damping properties in a temperature range relevant for the area of application of above 200 DEG C, said material being chemically resistant to the melt. In addition, the end face of the ultrasonic waveguide facing the melt is closed and can be wetted by the melt.
    Type: Application
    Filed: June 10, 2008
    Publication date: September 2, 2010
    Applicant: FORSCHUNGSZENTRUM DRESDEN-ROSSENDORF E.V.
    Inventors: Sven Eckert, Gunter Gerbeth, Thomas Gundrum