Patents by Inventor Thomas E. Gleason

Thomas E. Gleason 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).

  • Source range field calibration fixture
    Patent number: 5032719
    Abstract: A portable dosimeter calibration device has a shielded container with a cover, and providing a cavity in which dosimeters may be spaced about a central shielded compartment. An elongated carrier rod has a radiation source adjacent its lower end and extends outwardly of the cover. The end of the rod with the radiation source is normally seated in a shielded well of the compartment in a first position of the rod, and the rod may be secured in a second elevated position in which it is aligned with a radiation passage in the shielding of the compartment to expose the dosimeter to radiation.
    Type: Grant
    Filed: February 27, 1990
    Date of Patent: July 16, 1991
    Assignee: Northeast Utilities Service Company
    Inventors: Thomas E. Gleason, John E. Laine, Thomas P. Ricketts