Patents by Inventor Junichi Teruta

Junichi Teruta 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).

  • Method of driving plural linear induction motors in a transporting system
    Patent number: 5237252
    Abstract: A transporting system includes plural primary dispersedly arranged linear induction motors and plural continuously movable bodies connected by a secondary conductor in an endless path. At least one of the linear induction motors is directly controlled by an inverter control device, and the remaining linear induction motors are switchably connected to a power source. A running speed of the moveable bodies is detected, and the difference between the detected running speed and a desired running speed is used to control the inverter control device and the switching of the remaining induction motors to the power source. A voltage controller can be used in place of the inverter control device.
    Type: Grant
    Filed: December 31, 1991
    Date of Patent: August 17, 1993
    Assignee: Hitachi Kiden Kogyo Kabushiki Kaisha
    Inventors: Michihiro Tanaka, Junichi Teruta
  • Controls in a goods assorting device
    Patent number: 5199548
    Abstract: A control system in a goods assorting apparatus whereby the moving state of an assorting carrier by the linear motor driving system is detected by a group of photoelectric switches which are arranged at regular intervals in each section of a reaction plate for detection of the speed of the assorting carrier and issuance of synchronizing signals. This control device ensures accurate dividing of goods into the specified assorting destination.
    Type: Grant
    Filed: October 3, 1991
    Date of Patent: April 6, 1993
    Assignee: Hitachi Kiden Kogyo K.K.
    Inventors: Michihiro Tanaka, Junichi Teruta, Shigeo Yamanishi