Patents Assigned to Japan as represented by Director-General of National Astronomical Observatory
  • Patent number: 6604365
    Abstract: A thermal link assembly provides thermal connection between a first thermally conductive part to which it is secured, and a second thermally conductive part which is generally disk-shaped and has a peripheral cylindrical surface. The thermal link assembly includes an annular ring made of thermally conductive material, generally in a shape of a revolution with respect to an axis, including an annular base portion to be secured to the first part and a series of contact tongues arranged along the base portion. Each contact tongue has a stem and a head. The stem has i) a longitudinal axis extending generally parallel to the axis of the annular ring, ii) a first longitudinal end connected to the base portion, and iii) a second longitudinal end connected to the head. The head has a contact surface to be in contact with the peripheral cylindrical surface of the second part.
    Type: Grant
    Filed: October 24, 2002
    Date of Patent: August 12, 2003
    Assignees: Japan as represented by Director-General of National Astronomical Observatory, Sumitomo Heavy Industries, Ltd., Oshima Prototype Engineering Co., Ltd.
    Inventors: Yutaro Sekimoto, Katsuhiro Narasaki, Kazufusa Noda
  • Publication number: 20030106326
    Abstract: A thermal link assembly provides thermal connection between first and second thermally conductive parts. The thermal link assembly is adapted for securing to the first part. The second part is generally disk-shaped and has a peripheral cylindrical surface. The thermal link assembly includes an annular ring made of thermally conductive material. The annular ring is generally in a shape of revolution with respect to an axis. The annular ring includes an annular base portion to be secured to the first part and a series of contact tongues arranged along the base portion. Each contact tongue has a stem and a head. The stem has i) a longitudinal axis extending generally parallel to the axis of the annular ring, ii) a first longitudinal end connected to the base portion, and iii) a second longitudinal end connected to the head. The head has a contact surface to be in contact with the peripheral cylindrical surface of the second part.
    Type: Application
    Filed: October 24, 2002
    Publication date: June 12, 2003
    Applicants: JAPAN AS REPRESENTED BY DIRECTOR-GENERAL OF NATIONAL ASTRONOMICAL OBSERVATORY, SUMITOMO HEAVY INDUSTRIES, LTD., OSHIMA PROTOTYPE ENGINEERING CO., LTD.
    Inventors: Yutaro Sekimoto, Katsuhiro Narasaki, Kazufusa Noda
  • Patent number: 6288683
    Abstract: An antenna mirror surface measuring/adjusting apparatus has a plane mirror larger than an aperture surface of said principal reflection mirror and set in parallel with the aperture surface, an actuator for driving a group of mirror surface panels of the principal reflection mirror, and a receiving electric field arithmetic processor for measuring, each time the actuator shifts a position of the mirror surface panel from an initial state of the mirror surface panel of the principal reflection mirror, radio wave signals of radio waves radiated by a transmitter/receiver and reflected back from the plane mirror, obtaining an aperture surface phase distribution in an initial state of the principal reflection mirror by executing an arithmetic process on these measured signals, then gaining configurations of the mirror surface on the basis of the aperture surface phase distribution, and adjusting the mirror surface by the actuator in accordance with the obtained mirror surface configurations.
    Type: Grant
    Filed: September 27, 2000
    Date of Patent: September 11, 2001
    Assignees: Mitsubishi Denki Kabushiki Kaisha, Japan Represented by Director-General National Astronomical Observatory
    Inventors: Hiroyuki Deguchi, Norio Miyahara, Shuji Urasaki, Soichi Matsumoto, Masato Ishiguro, Tomohiro Mizuno, Shigeru Makino