Patents by Inventor Dennis P. Newstead

Dennis P. Newstead 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: 4939522
    Abstract: Multiple vehicles located within a predefined search space are located and tracked using at least two spaced-apart transmitters. Each transmitter can broadcast an omnidirectional initialization signal and a positioning signal having a null or break in its wavefront. By rotating the positioning signal, the null will sweep the predefined search space and by detecting both the initialization signal and the null in the positioning signal, the position of each vehicle can be determined. In the preferred embodiment, the locational information from each vehicle is collected at a central location, typically in a data acquisition system or controller. In the particularly preferred embodiment, the locational information is further relied on to provide for command information for feedback control of the vehicles.
    Type: Grant
    Filed: May 15, 1989
    Date of Patent: July 3, 1990
    Assignee: Bechtel Group, Inc.
    Inventors: Dennis P. Newstead, Colin J. Whitehead