Patents by Inventor Werner Mannhart

Werner Mannhart 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 evaluating yarn signals based on the detection of at least approximately periodic variations in cross section
    Patent number: 4168604
    Abstract: An apparatus for controlling a plurality of spinning stations by evaluating yarn signals based upon detection of approximately periodic variations in yarn cross section provides for conversion of the signals to digital form and application of the digital signals to a microcomputer in which the sum of the differences between the original yarn signal and a yarn signal delayed in time is continuously formed. Specific fault signals are produced from the summed differences which are checked against predetermined reference values.
    Type: Grant
    Filed: February 17, 1978
    Date of Patent: September 25, 1979
    Assignee: Zellweger, Ltd.
    Inventor: Werner Mannhart
  • Method and apparatus for evaluating yarn signals having an at least approximately periodic component
    Patent number: 4152931
    Abstract: A method and apparatus for evaluating yarn signals having at least an approximately periodic component superimposed on an irregularity provides for determining the polarity values of successive signal components using a comparator and the evaluation of coincidence of such polarity values during a predetermined period using counting means.
    Type: Grant
    Filed: February 17, 1978
    Date of Patent: May 8, 1979
    Assignee: Zellweger, Ltd.
    Inventor: Werner Mannhart