Patents by Inventor William J. Trondsen

William J. Trondsen 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).

  • Vacuum envelope including self-aligning end shield, vacuum interrupter, vacuum circuit interrupter and method including the same
    Patent number: 8039771
    Abstract: A vacuum envelope is for a fixed contact mounted on a fixed electrode and a moveable contact mounted on a moveable electrode. The vacuum envelope includes a ceramic tube including a first open end and a second open end. A first end member is secured to the first open end. A second end member includes an inside surface and is secured to the second open end. A self-aligning end shield includes a first end having an opening therein, a second open end, an intermediate portion disposed between the first end and the end shield second open end, and a flange portion disposed from the end shield second open end. The flange portion extends outwardly from the intermediate portion and generally back toward the first end. The flange portion includes an edge engaging the inside surface of the second end member, and is normally offset from the ceramic tube.
    Type: Grant
    Filed: August 11, 2008
    Date of Patent: October 18, 2011
    Assignee: Eaton Corporation
    Inventor: William J. Trondsen
  • VACUUM ENVELOPE INCLUDING SELF-ALIGNING END SHIELD, VACUUM INTERRUPTER, VACUUM CIRCUIT INTERRUPTER AND METHOD INCLUDING THE SAME
    Publication number: 20100032412
    Abstract: A vacuum envelope is for a fixed contact mounted on a fixed electrode and a moveable contact mounted on a moveable electrode. The vacuum envelope includes a ceramic tube including a first open end and a second open end. A first end member is secured to the first open end. A second end member includes an inside surface and is secured to the second open end. A self-aligning end shield includes a first end having an opening therein, a second open end, an intermediate portion disposed between the first end and the end shield second open end, and a flange portion disposed from the end shield second open end. The flange portion extends outwardly from the intermediate portion and generally back toward the first end. The flange portion includes an edge engaging the inside surface of the second end member, and is normally offset from the ceramic tube.
    Type: Application
    Filed: August 11, 2008
    Publication date: February 11, 2010
    Inventor: WILLIAM J. TRONDSEN