Patents by Inventor Douglas W. Plier

Douglas W. Plier 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: 4866852
    Abstract: An aeronautic chart course and position locator is removably attachable by means of an adhesive backing to an aeronautic chart. The locator is made from a clear supple polymer film and comprises a 360 degree compass rose and a rotatable course and mileage indicator arm attached to the compass rose. The locator may also include a rotatable aircraft heading indicator disk for wind drift correction and course interception and permits course and azimuth identification to or from airports or VHF omni-directional range navigation radial (VOR) transmitters or any other selected point. Two locators can be used together with VOR equipment to locate the position of an aircraft on a chart by simple azimuth triangulation. A third locator can be used to determine the correct course to a point not serviced by directional radio facilities. A modified locator assists a student to visualize the aircraft's position on a chart either to the right or left of a given VOR radial.
    Type: Grant
    Filed: July 28, 1988
    Date of Patent: September 19, 1989
    Inventor: Douglas W. Plier