Patents by Inventor Naohide Kamikawa

Naohide Kamikawa 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: 9090267
    Abstract: A railway vehicle body tilting system has a height control valve for supplying and discharging compressed air to and from an air spring by an actuator, an auxiliary control valve for supplying compressed air to the air spring and thereby causing a car body to tilt, a backup valve for switching the connection between the air spring and either the height control valve or the auxiliary control valve, and a controller installed in each of vehicles linked together as a train. During normal operation, the controller provided in each of the cars controls the height control valve of the respective car and monitors for faulty operation in other linked controllers. If a fault arises in a linked controller, control over the malfunctioning controller is terminated, and another normal controller controls a backup valve in the car with the malfunctioning control device.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: July 28, 2015
    Assignee: NIPPON SHARYO, LTD.
    Inventors: Hiroshi Shinmura, Tetsuya Hayashi, Nobuyuki Okada, Naohide Kamikawa
  • Patent number: 8935984
    Abstract: A carriage-body inclination device (30) has individual inclination units (112, 113) that are provided corresponding to air springs (22, 23), and a control unit (110). The individual inclination unit (112) can sufficiently execute supply or release of air to or from the air spring (22) by driving a control valve (40) and a large-capacity valve (170) using a height difference value which is a difference between a height instruction value provided by the control unit (110) and a height value obtained from a link-lever mechanism (24). The control valve (40) has a two-layer structure of a fixed sleeve (91), a control sleeve (90), and a spool (80). The control sleeve (90) is moved and driven by the link-lever mechanism (24) and a rotation-translation conversion mechanism (44). The spool (80) is moved and driven by a spool actuator (120) according to a set height value.
    Type: Grant
    Filed: May 9, 2012
    Date of Patent: January 20, 2015
    Assignees: Pneumatic Servo Controls Ltd., Nippon Sharyo, Ltd.
    Inventors: Katsumi Sasaki, Hiroshi Shinmura, Tetsuya Hayashi, Takeyoshi Mihara, Naohide Kamikawa
  • Patent number: 8667900
    Abstract: A vehicle body tilting device for railway vehicle is arranged to control the tilt of a vehicle body by exchanging compressed air between a pair of left and right air springs. This device includes: a control valve for tilt operation, connected between the air springs; a pump for tilt operation, connected between the air springs through the control valve; and a control device for controlling both the control valve and the pump. The control valve forms a circulation flow path for allowing compressed air, delivered by the pump, to circulate therethrough. Before controlling the tilt of the vehicle body, the control device drives in advance the pump to circulate the compressed air through the circulation flow path to provide a delivery standby state, changes over at predetermined timing the position of the control valve, and delivers the compressed air from one of the air springs to the other.
    Type: Grant
    Filed: October 15, 2010
    Date of Patent: March 11, 2014
    Assignee: Nippon Sharyo, Ltd.
    Inventors: Hiroshi Shinmura, Tetsuya Hayashi, Takeyoshi Mihara, Naohide Kamikawa
  • Publication number: 20140060379
    Abstract: A carriage-body inclination device (30) has individual inclination units (112, 113) that are provided corresponding to air springs (22, 23), and a control unit (110). The individual inclination unit (112) can sufficiently execute supply or release of air to or from the air spring (22) by driving a control valve (40) and a large-capacity valve (170) using a height difference value which is a difference between a height instruction value provided by the control unit (110) and a height value obtained from a link-lever mechanism (24). The control valve (40) has a two-layer structure of a fixed sleeve (91), a control sleeve (90), and a spool (80). The control sleeve (90) is moved and driven by the link-lever mechanism (24) and a rotation-translation conversion mechanism (44). The spool (80) is moved and driven by a spool actuator (120) according to a set height value.
    Type: Application
    Filed: May 9, 2012
    Publication date: March 6, 2014
    Applicants: NIPPON SHARYO, LTD., PNEUMATIC SERVO CONTROLS LTD.
    Inventors: Katsumi Sasaki, Hiroshi Shinmura, Tetsuya Hayashi, Takeyoshi Mihara, Naohide Kamikawa
  • Publication number: 20130319284
    Abstract: A railway vehicle body tilting system has a height control valve for supplying and discharging compressed air to and from an air spring by an actuator, an auxiliary control valve for supplying compressed air to the air spring and thereby causing a car body to tilt, a backup valve for switching the connection between the air spring and either the height control valve or the auxiliary control valve, and a controller installed in each of vehicles linked together as a train. During normal operation, the controller provided in each of the cars controls the height control valve of the respective car and monitors for faulty operation in other linked controllers. If a fault arises in a linked controller, control over the malfunctioning controller is terminated, and another normal controller controls a backup valve in the car with the malfunctioning control device.
    Type: Application
    Filed: April 28, 2011
    Publication date: December 5, 2013
    Applicant: NIPPON SHARYO, LTD
    Inventors: Hiroshi Shinmura, Tetsuya Hayashi, Nobuyuki Okada, Naohide Kamikawa
  • Publication number: 20130180427
    Abstract: A vehicle body tilting device for railway vehicle is arranged to control the tilt of a vehicle body by exchanging compressed air between a pair of left and right air springs. This device includes: a control valve for tilt operation, connected between the air springs; a pump for tilt operation, connected between the air springs through the control valve; and a control device for controlling both the control valve and the pump. The control valve forms a circulation flow path for allowing compressed air, delivered by the pump, to circulate therethrough. Before controlling the tilt of the vehicle body, the control device drives in advance the pump to circulate the compressed air through the circulation flow path to provide a delivery standby state, changes over at predetermined timing the position of the control valve, and delivers the compressed air from one of the air springs to the other.
    Type: Application
    Filed: October 15, 2010
    Publication date: July 18, 2013
    Applicant: NIPPON SHARYO, LTD.
    Inventors: Hiroshi Shinmura, Tetsuya Hayashi, Takeyoshi Mihara, Naohide Kamikawa