Patents by Inventor Shunsuke Utena

Shunsuke Utena 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).

  • Control system
    Patent number: 4843537
    Abstract: A safety control safeguard system includes sensors disposed in a quadruple array. First, second, third and fourth signal processing channels provided in parallel each include signal processing means for receiving output signals from the associated sensors for producing a trip signal. First and second actuating means operable independent of each other are provided for actuating an apparatus to be controlled. A first switch means operatively connected to the first, second, third and fourth processing channels for activating the first actuating means in response to reception of the trip signal produced by the signal processing channels and second switch means operatively connected to the first, second, third and fourth processing channels for activating the second actuating means in response to reception of the trip signal produced by the signal processing channels.
    Type: Grant
    Filed: July 2, 1987
    Date of Patent: June 27, 1989
    Assignee: Hitachi, Ltd.
    Inventors: Setsuo Arita, Shunsuke Utena, Fumio Murata, Atomi Noguchi, Shigeru Izumi, Satoshi Suzuki, Fumiyasu Ookido