Patents by Inventor William Dobbie

William Dobbie 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: 5118195
    Abstract: The invention features a real time system for detecting streaks or scratches which occur substantially parallel to the direction of motion of a continuous web of material. The system can also be used to inspect sheets of material that may have been cut from such webs. An energy source such as an incandescent lamp or a bank of lamps generates electromagnetic energy that impinges upon the continuous web of material. CCD cameras receive reflected specular radiation from the web and generate video signals. The CCD cameras are disposed opposite the energy source and within 5.degree. of the plane perpendicular to the continuous web plane. Alternatively, the energy sources may transmit energy through the web material, which energy can be received by the CCD cameras. A processor is connected to the CCD cameras to process the video signals and to generate an enhanced signal-to-noise ratio signal that represents a streak or scratch on the web.
    Type: Grant
    Filed: September 10, 1990
    Date of Patent: June 2, 1992
    Assignee: RKB Opto-Electrics, Inc.
    Inventor: William Dobbie