Patents by Inventor Rainer PURSCHWITZ

Rainer PURSCHWITZ 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 and apparatus for reducing interference in electrical locating of a buried cable sheathing fault
    Patent number: 9389265
    Abstract: A method and an apparatus are provided to reduce or eliminate interference signals that have been additively superimposed on a useful signal for locating a cable sheathing fault of a buried electrical cable. A correction unit includes a filter, a delay device and/or a DC component estimator. The correction unit automatically determines a transient interference signal and a DC offset voltage component that have been superimposed on the useful signal as received in an input signal of the correction unit, and then subtracts these determined interference signals from the input signal to provide the interference-free or interference-suppressed useful signal as the output.
    Type: Grant
    Filed: July 31, 2013
    Date of Patent: July 12, 2016
    Assignee: Hagenuk KMT Kabelmesstechnik GmbH
    Inventors: Marco Stephan, Marco Kuettner, Rainer Purschwitz
  • Method and Apparatus for Reducing Interference in Electrical Locating of a Buried Cable Sheathing Fault
    Publication number: 20140062497
    Abstract: A method and an apparatus are provided to reduce or eliminate interference signals that have been additively superimposed on a useful signal for locating a cable sheathing fault of a buried electrical cable. A correction unit includes a filter, a delay device and/or a DC component estimator. The correction unit automatically determines a transient interference signal and a DC offset voltage component that have been superimposed on the useful signal as received in an input signal of the correction unit, and then subtracts these determined interference signals from the input signal to provide the interference-free or interference-suppressed useful signal as the output.
    Type: Application
    Filed: July 31, 2013
    Publication date: March 6, 2014
    Applicant: Hagenuk KMT Kabelmesstechnik GmbH
    Inventors: Marco STEPHAN, Marco KUETTNER, Rainer PURSCHWITZ