Patents by Inventor Christopher S. Carver

Christopher S. Carver 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: 5268844
    Abstract: An electronic digital plotter for navigators which relieves the rigors of mechanical manual plotting of position on a chart. The plotter utilizes either a flexible or rigid board employing electromagnetic or capacitive resistance technology. It makes use of a fixed X/Y coordinate system to generate latitude and longitude coordinates from a chart overlay. The plotter employs a pencil or pen type stylus with interchangeable cartridge to locate position, derived from electronic position information on the board and hence on the chart. By comparing the location of the stylus to the input data, the plotter directs the user to the input location utilizing a visual, bullseye director display. Given ship's position, on a dead reckoning track or expected destination or waypoint, the plotter gives course, speed distance, and transit time. The plotter can also accept inputs from hand bearing compass or ship's heading compass.
    Type: Grant
    Filed: May 21, 1990
    Date of Patent: December 7, 1993
    Inventors: Christopher S. Carver, Christopher Carver