Patents by Inventor Koushirou Sakado

Koushirou Sakado 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).

  • Signal system on railway vehicle, railway transportation system and railway vehicle
    Patent number: 8583298
    Abstract: The invention solves the prior art problem of signals not being transmitted between ground and vehicle when a train stops so that a cross point of a loop coil or a boundary between two loop coils is positioned between antennas disposed on a front side and a rear side in a direction of travel of the train.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: November 12, 2013
    Assignee: Hitachi, Ltd.
    Inventors: Naoya Tomioka, Koushirou Sakado, Morimitsu Kubo
  • Train detector and train security device for dual gauge track circuit
    Patent number: 8505855
    Abstract: When a prior art track circuit for monitoring an electric signal supplied to a rail via a transmitter and a receiver connected to the rail for detecting a presence of a train using a phenomenon in which the reception level of a signal drops when axles of a train electrically short two rails together and sending a train control signal to the train is applied to a dual gauge track circuit in which two types of trains having different gauges share a rail, mutual induction between rails occurs which is a problem specific to the dual gauge track circuit, and the amount of attenuation of the train detection signal when a train is present on a track drops.
    Type: Grant
    Filed: January 18, 2011
    Date of Patent: August 13, 2013
    Assignee: Hitachi, Ltd.
    Inventors: Kenji Kikuchi, Koushirou Sakado, Kentaro Ohkubo
  • TRAIN DETECTOR AND TRAIN SECURITY DEVICE FOR DUAL GAUGE TRACK CIRCUIT
    Publication number: 20110174934
    Abstract: When a prior art track circuit for monitoring an electric signal supplied to a rail via a transmitter and a receiver connected to the rail for detecting a presence of a train using a phenomenon in which the reception level of a signal drops when axles of a train electrically short two rails together and sending a train control signal to the train is applied to a dual gauge track circuit in which two types of trains having different gauges share a rail, mutual induction between rails occurs which is a problem specific to the dual gauge track circuit, and the amount of attenuation of the train detection signal when a train is present on a track drops.
    Type: Application
    Filed: January 18, 2011
    Publication date: July 21, 2011
    Inventors: Kenji KIKUCHI, Koushirou Sakado, Kentaro Ohkubo
  • SIGNAL SYSTEM ON RAILWAY VEHICLE, RAILWAY TRANSPORTATION SYSTEM AND RAILWAY VEHICLE
    Publication number: 20110160942
    Abstract: The invention solves the prior art problem of signals not being transmitted between ground and vehicle when a train stops so that a cross point of a loop coil or a boundary between two loop coils is positioned between antennas disposed on a front side and a rear side in a direction of travel of the train.
    Type: Application
    Filed: December 21, 2010
    Publication date: June 30, 2011
    Inventors: Naoya TOMIOKA, Koushirou Sakado, Morimitsu Kubo