Patents by Inventor Mark E. Coles

Mark E. Coles 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).

  • Microwave circulator apparatus and method
    Patent number: 5384556
    Abstract: A ferrite stripline circulator having low cost, broad tolerance elements and an easy to assembly design. The unit comprises of a cylindrical housing into which are stacked a ferrite disk, a center conductor, another ferrite disk, a metal ground plane, a disk magnet, a metal cover and a compression spring. A C-clip, that fits into a groove on an upper inner circumference of the cylinder, forces the compression spring against the cover and thereby applies the pressure that is required to assure proper operation of the stacked elements.
    Type: Grant
    Filed: September 30, 1993
    Date of Patent: January 24, 1995
    Assignee: Raytheon Company
    Inventors: Mark E. Coles, James P. Kingston