Patents by Inventor Yasumasa Takagi

Yasumasa Takagi 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).

  • Patent number: 4913379
    Abstract: To quickly change rocket flight direction immediately after a rocket has been launched without increasing the wing area, the rocket flight direction control system comprises four steering wings for controlling rocket flight directions; four deflectable nozzles for jetting combustion gas backward to generate rocket thrust; a controller for generating steering control signals; and at least one actuator for actuating the deflectable nozzles in response to the steering control signals in synchronism with steering motion of the steering wings. Further, when the deflectable nozzle is divided into two, fixed and movable, nozzles, the diameter of the outlet end of the fixed divergent nozzle of the overexpansion type nozzle in matched with that of the movable nozzle for prevention of gas leakage through a gap between the two nozzles.
    Type: Grant
    Filed: February 23, 1989
    Date of Patent: April 3, 1990
    Assignees: Japan as represented by Director General, Technical Research and Development Institute, Japan Defence Agency, Nissan Motor Co., Ltd.
    Inventors: Naminosuke Kubota, Yutaka Yano, Yasumasa Takagi, Kazuyoshi Ninomiya, Nobuo Shimoguti, Mituhiko Terashima, Tooru Nakano, Hirohito Ohtsuka
  • Patent number: 4486058
    Abstract: A power source terminal assembly for the wiring of electronic instruments, in which a plurality of terminal screw rods, each having a central flange, are molded into an insulating substrate with the flanges partly embedded therein. At least one of the terminal screw rods is designed so that one side of the flange projects outwardly from the substrate surface by a predetermined amount, and this terminal screw rod is used as a grounding terminal. A casing of an electronic instrument has a hole, for receiving the grounding terminal screw rod to permit one side of its flange to make contact with the casing, and a window for insertion of the other terminal screw rods without making contact with the casing. The power source terminal assembly is engaged with the casing, and the grounding terminal and one portion of the power source assembly are fixedly retained by fixing means to the casing.
    Type: Grant
    Filed: September 14, 1982
    Date of Patent: December 4, 1984
    Assignee: Fujitsu Limited
    Inventors: Yasumasa Takagi, Tomohico Sasaki, Tadanobu Matsumura, Tadashi Gobuichi
  • Patent number: 4400844
    Abstract: A wiper device equipped with a rise up mechanism, including a motor, a blade, a wiper pivot, a motor arm which rotates in one direction during the starting and wiping operations of the blade and which rotates in a reverse direction during the parking and stopping operations of the blade, a connecting rod reciprocating in response to the rotation of the motor arm to swing the wiper pivot, a retainer for retaining the connecting rod, an eccentric member for rotating together with or relative to the retainer, a friction spring disposed between the eccentric member and the retainer for permitting the rotation of the eccentric member relative to the retainer only just after the starting of the blade or just before the parking and stopping of the blade, and a cam mechanism for rotating the eccentric member together with the retainer during all operations except the operation during which the eccentric member rotates relative to the retainer just after the starting of the blade or just before the parking and stoppin
    Type: Grant
    Filed: January 11, 1982
    Date of Patent: August 30, 1983
    Assignees: Nissan Motor Co., Ltd., Jidosha Denki Kogyo Kabushiki Kaisha
    Inventors: Nobuo Hayakawa, Yasuo Ohashi, Kenji Ohta, Yasumasa Takagi, Masami Gotoh
  • Patent number: 4095553
    Abstract: A lever fixed to a metal cap or speed cup of a speedometer is vibratably engageable with projections provided on a rotating ring member when a speed pointer rotatable with the metal cap deflects beyond a predetermined maximum index, so that the speed pointer is vibrated to give a warning to the vehicle driver.
    Type: Grant
    Filed: October 22, 1976
    Date of Patent: June 20, 1978
    Inventors: Katsutoshi Ono, Yasumasa Takagi