Patents by Inventor Umeko Kato

Umeko Kato 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).

  • Train detection device for railroad models and train crossing control apparatus utilizing the train detection device
    Patent number: 5590855
    Abstract: A train detection device for use in railroad models is provided with a capacitance type sensor which detects the close approach or passage of a train by responding to capacitance of the train. By using the capacitance type sensor, the train detection device becomes a non-contact type detection device, which avoids the kind of damage that can occur with contact type detectors. The train detection device is applied to a train crossing control apparatus for use in railroad models equipped with a crossing gate, a warning signal, and a controlling device for controlling the operations of the crossing gate and the warning signal.
    Type: Grant
    Filed: July 12, 1994
    Date of Patent: January 7, 1997
    Inventors: Ryochi Kato, Umeko Kato, Tomohiko Kato, Hideto Kato, Teruko Ichizuka