Patents by Inventor Jeff Takenaka

Jeff Takenaka 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).

  • X-ray tube having an integral housing assembly
    Patent number: 6487273
    Abstract: The present invention is directed to a radiographic apparatus that utilizes a single integral housing for providing an evacuated envelope for an anode and cathode assembly. The integral housing provides sufficient radiation blocking and heat transfer characteristics such that an additional external housing is not required. The integral housing is air cooled, and thus does not utilize any coolant. In addition, the integral housing is insulated with a potting material, which electrically insulates the integral housing and its components, and also limits the amount of noise emitted from the housing during operation. In an alternative embodiment, enhanced thermal and electrically insulating properties are achieved through the use of a potting material disposed in selected areas of the tube interior. The potting material cooperates with optimized airflow through the tube assembly to effectively and continuously remove heat therefrom.
    Type: Grant
    Filed: November 20, 2001
    Date of Patent: November 26, 2002
    Assignee: Varian Medical Systems, Inc.
    Inventors: Jeff Takenaka, Scott Coles, Mark Lange, Karen Quinn, Christopher Artig, Jim Burke, Brian Carsten, Craig Smith
  • Mammography x-ray tube having an integral housing assembly
    Patent number: 6361208
    Abstract: The present invention is directed to a radiographic apparatus that utilizes a single integral housing for providing an evacuated envelope for an anode and cathode assembly. The integral housing provides sufficient radiation blocking and heat transfer characteristics such that an additional external housing is not required. The integral housing is air cooled, and thus does not utilize any coolant. In addition, the integral housing is insulated with a dielectric gel material, which electrically insulates the integral housing and its components, and also limits the amount of noise emitted from the housing during operation.
    Type: Grant
    Filed: November 26, 1999
    Date of Patent: March 26, 2002
    Assignee: Varian Medical Systems
    Inventors: Jeff Takenaka, Scott Coles, Mark Lange, Karen Quinn, Christopher F. Artig
  • Electron beam superimposition method and apparatus
    Patent number: 5844963
    Abstract: A method and apparatus for superimposing a plurality of electron beams at a desired location after X-ray tube manufacturing processes are generally complete. The method is embodied in providing mechanical and electrical means which are internal to the X-ray tube which provide means for adjustment of a focal point of a plurality of electron beams being emitted from a cathode assembly to thereby provide precise control of where the plurality of electron beams achieve superimposition on a target anode.
    Type: Grant
    Filed: August 28, 1997
    Date of Patent: December 1, 1998
    Assignee: Varian Associates, Inc.
    Inventors: Thomas Koller, Rajesh Bandari, Jeff Takenaka, Rick Smith