Patents by Inventor Peter Harke

Peter Harke 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).

  • Process for monitoring a moving yarn sheet and apparatus for the execution of this process
    Patent number: 5684598
    Abstract: Process for monitoring a moving yarn sheet by means of a light beam, photodetectors and an electronic analyzer, whereby the yarn sheet is guided via thread guide rods before and after the monitoring site and the shadowing of the light beam caused by an increase in thread thickness is directed perpendicularly to the direction of travel of the yarn sheet for detection by photodetectors, and evaluated and recorded by the electronic analyzer, characterized in that the intensity of a single light beam is detected by at least two photodetectors arranged in series in the direction of travel of the yarn sheet and in that the evaluation by the electronic analyzer is such that a recording only takes place when the shadowing is detected by one or more of said photodetectors following in the direction of travel of the yarn sheet with a time delay corresponding to the running speed of the yarn sheet is disclosed.
    Type: Grant
    Filed: January 16, 1996
    Date of Patent: November 4, 1997
    Assignee: Akzo Nobel NV
    Inventors: Peter Harke, Hans Willi Louis, Wolfgang Worbs