Patents by Inventor Keith Squibb

Keith Squibb 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).

  • Magnetron having an TM.sub.01 output coupling probe passing through a coupling iris
    Patent number: 5210465
    Abstract: An output of a magnetron operating in the TM.sub.01 /mode has a ceramic output window which is planar. As ceramic material may have a higher dielectric constant than glass a longer output probe can be used which, combined with the fact that the window is planar, gives good mode purity thus reducing heating and arcing in the window. Ceramic also has a higher melting point than glass which means that cooling of the window is less critical.
    Type: Grant
    Filed: October 26, 1990
    Date of Patent: May 11, 1993
    Assignee: EEV Limited
    Inventor: Keith Squibb
  • Magnetron tuning systems
    Patent number: 5041801
    Abstract: A magnetron is tuned by a co-axial transmission line co-axial with the axis of the magnetron and a radial transmission line linking the co-axial line to a plurality of sampling points symmetrically positioned on the end of the magnetron. A fraction of the R.F. power in the magnetron passes into the transmission lines and vice versa, so by altering the resonant frequency of the transmission lines the frequency of the RF power in the magnetron can be controlled.
    Type: Grant
    Filed: October 20, 1989
    Date of Patent: August 20, 1991
    Assignee: EEV Limited
    Inventor: Keith Squibb