Patents by Inventor Andrew M. Tullis

Andrew M. Tullis 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).

  • Ion detector
    Patent number: 4697083
    Abstract: An improved ion detector device of the ionization detection device chamber ype comprises an ionization chamber having a central electrode therein surrounded by a cylindrical electrode member within the chamber with a collar frictionally fitted around at least one of the electrodes. The collar has electrical contact means carried in an annular groove in an inner bore of the collar to contact the outer surface of the electrode to provide electrical contact between an external terminal and the electrode without the need to solder leads to the electrode.
    Type: Grant
    Filed: January 30, 1986
    Date of Patent: September 29, 1987
    Assignee: The United States of America as represented by the Department of Energy
    Inventor: Andrew M. Tullis