Patents by Inventor Walter Perrie

Walter Perrie 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).

  • Radiation beam position sensor
    Patent number: 5939704
    Abstract: An apparatus for detecting the position of a primary beam of electromagnetic radiation, the apparatus including a leaky mirror for reflecting the primary beam and for extracting from the primary beam a secondary beam and a position sensitive detector for detecting the spatial position of the secondary beam, wherein the leaky mirror comprises a material which has a transmissivity of less than 0.2 for the radiation of the primary beam and the position sensitive detector is arranged in the path of the secondary beam after transmission by the leaky mirror, the position of the secondary beam providing a measure of the position of the primary beam.
    Type: Grant
    Filed: November 13, 1996
    Date of Patent: August 17, 1999
    Assignee: British Nuclear Fuels PLC
    Inventors: Walter Perrie, Peter Julian Modern