Patents by Inventor Olav Birlem

Olav Birlem 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 device for the optical detection of foreign fibers and other impurities in a longitudinally traveling yarn
    Publication number: 20010022656
    Abstract: Yarn impurities are detectable by a method and device wherein a first diameter-dependent signal is obtained in a first measurement of a linearly traveling yarn, the intensity of the light for a second measurement is set as a function of the first signal to compensate for the effect of the yarn diameter on the light reflected by the yarn and then the second electrical signal can be directly evaluated for detecting yarn impurities. The invention improves the detection of impurities, for example in connection with spinning and bobbin winding machines.
    Type: Application
    Filed: February 26, 2001
    Publication date: September 20, 2001
    Inventors: Herbert Henze, Olav Birlem
  • Apparatus for detecting foreign substance in strand-like textile material
    Patent number: 6175408
    Abstract: An apparatus detects foreign substances in strand-like textile material, such as slivers or yarn, using a white-light LED. The color detection is effected over more than two color support points whereby the detection of foreign substances in the textile material is improved. The apparatus is preferably operated in combination with a yarn cleaner in spinning or bobbin winding machines.
    Type: Grant
    Filed: December 22, 1999
    Date of Patent: January 16, 2001
    Assignee: W. Schlafhorst AG & Co.
    Inventors: Herbert Henze, Olav Birlem