Patents by Inventor Norifumi Takagaki

Norifumi Takagaki 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 diaphragm mechanism and X-ray CT apparatus
    Patent number: 9312038
    Abstract: The present invention includes: X-ray shielding materials; X-ray shielding material mounting plates to which the X-ray shielding portions are fixed; a driven side link and a driving side link that connect the two X-ray shielding material mounting plates to each other so that the X-ray shielding portions face each other and cross each other; connecting portions that connect each of the X-ray shielding material mounting plates to the driven side link and the driving side link; and a driving device that drives the driving side link so as to rotate. Connecting portions and are provided at positions not interfering with a movable region of the X-ray shielding material mounting plates formed in conjunction with the rotational driving of the driven side link and the driving side link. The X-ray shielding material mounting plates are moved by the rotational driving of the driving side link and accordingly, the slit width between the X-ray shielding materials is changed.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: April 12, 2016
    Assignee: HITACHI MEDICAL CORPORATION
    Inventors: Norifumi Takagaki, Tsutomu Suzuki, Mikio Mochitate
  • X-RAY DIAPHRAGM MECHANISM AND X-RAY CT APPARATUS
    Publication number: 20140079179
    Abstract: The present invention includes: X-ray shielding materials; X-ray shielding material mounting plates to which the X-ray shielding portions are fixed; a driven side link and a driving side link that connect the two X-ray shielding material mounting plates to each other so that the X-ray shielding portions face each other and cross each other; connecting portions that connect each of the X-ray shielding material mounting plates to the driven side link and the driving side link; and a driving device that drives the driving side link so as to rotate. Connecting portions and are provided at positions not interfering with a movable region of the X-ray shielding material mounting plates formed in conjunction with the rotational driving of the driven side link and the driving side link. The X-ray shielding material mounting plates are moved by the rotational driving of the driving side link and accordingly, the slit width between the X-ray shielding materials is changed.
    Type: Application
    Filed: May 30, 2012
    Publication date: March 20, 2014
    Applicant: HITACHI MEDICAL CORPORATION
    Inventors: Norifumi Takagaki, Tsutomu Suzuki, Mikio Mochitate