Patents by Inventor Christopher W. Howard

Christopher W. Howard 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).

  • Magnetrons
    Patent number: 4774436
    Abstract: The present invention concerns a rising sun magnetron comprising an anode ring having a series of radially inwardly-projecting teeth-like elements of a relatively high thermal coefficient of expansion. Each element (27) has a vane (21) of material of relatively low thermal coefficient of expansion secured on either side thereof so as to define alternate long and short cavities and an associated length of material (26) also of low coefficient of thermal expansion lying between the adjacent pair of vanes (21) and acting as a fulcrum for the associated vanes when the element (27) expands due to temperature rises.
    Type: Grant
    Filed: June 2, 1987
    Date of Patent: September 27, 1988
    Assignee: The M-O Valve Company Limited
    Inventors: Michael J. Clark, Edward Sobieradzki, Christopher W. Howard