Patents by Inventor David John Drew

David John Drew 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: 7047801
    Abstract: A portable system (20) for testing an electro-optical guidance assembly (22) includes an electro-optical test unit (40) with at least two sources of electromagnetic energy at different wavelengths for selectively illuminating the guidance assembly. The electro-optical test unit (40) is mounted within a frame (56) that can be part of a wheeled cart (50). The system (20) further includes one or more of: an adjustable fixture (84) for supporting a guidance assembly (22) for testing, a processor unit (42) for controlling the electro-optical test unit (40), a power supply unit (44) for providing electrical power to the electro-optical test unit (40) and the guidance assembly (22), and a leak test unit (46) for generating a vacuum in the guidance assembly (22) or for pressurizing the guidance assembly (22) with an inert gas to test for leaks.
    Type: Grant
    Filed: April 30, 2004
    Date of Patent: May 23, 2006
    Assignee: Raytheon Company
    Inventors: Clark Stephens, Jessie Roy Nichols, Bryan Richard Nichols, Ryan Joseph Peters, Richard Lee Collins, David John Drew, Jon Rocky Boyd, Richard Stephen Dotson, Scott David Zibrat
  • Patent number: 5905465
    Abstract: The present invention relates to an antenna system that is particularly suited for use in mobile communications applications. The antenna system includes both a transmit array and a receive array in a side by side configuration. In one embodiment, the radiating elements used in each of the arrays consist of air loaded microstrip patch antennas. The elements in each array are linearly arranged and polarization diversity is utilized so that the transmit and receive arrays can be spaced closely together.
    Type: Grant
    Filed: April 23, 1997
    Date of Patent: May 18, 1999
    Assignee: Ball Aerospace & Technologies Corp.
    Inventors: Steven C. Olson, Kerry R. Stewart, Jeffrey David Goodwin, David John Drew, Travis Lee Newton