Patents by Inventor Yoshiki Okubo

Yoshiki Okubo 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).

  • Publication number: 20220325705
    Abstract: A piston (8) is provided in a motor main body (4). A first motor chamber (9) is provided above the piston (8) and a second motor chamber (10) is provided below the piston (8). A pilot valve element (18) is provided so as to protrude from the piston (8). When a supply/discharge valve (13) is moved to its upper limit position or its lower limit position by the movement of the pilot valve element (18) in an up-down direction, a first valve member (25) of the supply/discharge valve (13) switches between supplying and discharging pressure fluid to and from the first motor chamber (9) and a second valve member (26) of the supply/discharge w valve (13) switches between supplying and discharging pressure fluid to and from the second motor chamber (10).
    Type: Application
    Filed: July 31, 2020
    Publication date: October 13, 2022
    Applicant: KOSMEK LTD.
    Inventors: Keitaro YONEZAWA, Yoshiki OKUBO
  • Patent number: 10696188
    Abstract: Provided is a vehicle including the following: a vehicle body having side walls on both sides in a width direction that is perpendicular to the direction of travel, and having an expanded portion between the upper end and the lower end of the side wall, the expanded portion being expanded further outward in the width direction than the upper end and the lower end; and a seat provided in the vehicle body and having a seatback along the side wall and a seat surface that extends inward in the width direction of the vehicle body from the seatback, the portion of the rear surface of the seatback that faces the side wall and that protrudes the farthest towards the side wall being disposed in a position facing the expanded portion of an in-vehicle-side lateral surface of the side wall.
    Type: Grant
    Filed: July 15, 2016
    Date of Patent: June 30, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINEERING, LTD.
    Inventors: Toru Kanemori, Nobuyuki Fujio, Yoshiki Okubo, Ryuji Karasawa
  • Publication number: 20180126874
    Abstract: Provided is a vehicle including the following: a vehicle body having side walls on both sides in a width direction that is perpendicular to the direction of travel, and having an expanded portion between the upper end and the lower end of the side wall, the expanded portion being expanded further outward in the width direction than the upper end and the lower end; and a seat provided in the vehicle body and having a seatback along the side wall and a seat surface that extends inward in the width direction of the vehicle body from the seatback, the portion of the rear surface of the seatback that faces the side wall and that protrudes the farthest towards the side wall being disposed in a position facing the expanded portion of an in-vehicle-side lateral surface of the side wall.
    Type: Application
    Filed: July 15, 2016
    Publication date: May 10, 2018
    Inventors: Toru KANEMORI, Nobuyuki FUJIO, Yoshiki OKUBO, Ryuji KARASAWA
  • Patent number: 8776696
    Abstract: A low floor vehicle can reduce, during curved track traveling of a vehicle, the lateral pressure of the vehicle, can prevent occurrence of vibration and creaking sounds of the vehicle, can improve riding comfort for passengers, and can reduce wear of wheel flanges, is provided. The low floor vehicle includes: a journal member which couples a pair of wheels and is attached to a truck frame; and a truck frame lateral beam arranged along a vehicle width direction closer to the center of the truck frame than the journal member. The journal member can turn with respect to the truck frame. A coupling member which couples the journal member and the truck frame lateral beam is provided. The coupling member is attached to the center in the vehicle width direction of the truck frame lateral beam so as to be pivotable around an axis extending in a vehicle height direction.
    Type: Grant
    Filed: June 16, 2009
    Date of Patent: July 15, 2014
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Yoshiki Okubo, Hiroyuki Kono, Kousuke Katahira
  • Patent number: 8561547
    Abstract: A track-guided vehicle wheel truck facilitates vehicle maintenance and enables reduction in costs. The track vehicle wheel truck includes guide frames arranged along the forward and rearward directions of the vehicle on the inside of the vehicle width direction in the running wheels, and fixed to knuckles; a tie rod arranged on the center side of the forward and rearward directions in the vehicle along the vehicle width direction, and interlock with the guide frames; guide wheel receivers disposed toward the inside of the vehicle width direction from the guide frames on the vehicle end side and the center side relative to an axis of the running wheels; and a steering axle arranged along the vehicle width direction, and are able to turn the running wheels, the knuckles, and the guide frames by installing a kingpin at both ends thereof.
    Type: Grant
    Filed: August 25, 2009
    Date of Patent: October 22, 2013
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Mihoko Shiroyama, Yoshiki Okubo, Kousuke Katahira
  • Patent number: 8418628
    Abstract: A the low floor vehicle includes a journal member which couples a pair of wheels and is attached to a truck frame; and a truck frame lateral beam arranged along a vehicle width direction closer to the center of the truck frame than the journal member. The journal member is turnable with respect to the struck frame. A pair of left and right stub links extending between the journal member and the truck frame lateral beam, are provided. Axes passing both ends of the pair of stub links are arranged to tilt so as to widen a space between the ends in the vehicle width direction with going from the truck frame lateral beam toward the journal member. Both the ends of the stub links are attached to be pivotable respectively around axes which extend in a height direction to the journal member and the truck frame lateral beam.
    Type: Grant
    Filed: June 16, 2009
    Date of Patent: April 16, 2013
    Assignee: Mitsubishi Heavy Industries, Ltd
    Inventors: Yoshiki Okubo, Hiroyuki Kono, Kousuke Katahira
  • Patent number: 8322289
    Abstract: A low floor vehicle reduces, when the vehicle enters a curved track, the lateral force of the vehicle, prevents occurrence of vibration and creaking sounds of the vehicle, improves riding quality of passengers, and reduces wear of wheel flanges. A low floor vehicle includes a bogie frame 9 of a bogie 7, a pair of bogie frame cross beams 9a arranged along a vehicle lateral direction in the middle of a vehicle longitudinal direction of the bogie frame 9 and arranged spaced apart from each other in the vehicle longitudinal direction, and a pair of wheels 8 provided in each of a vehicle front edge direction and a vehicle rear edge direction with respect to the pair of bogie frame cross beams 9a of the bogie frame 9 and configured to travel on a track 1.
    Type: Grant
    Filed: June 11, 2009
    Date of Patent: December 4, 2012
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Yoshiki Okubo, Hiroyuki Kono, Kousuke Katahira
  • Publication number: 20120048139
    Abstract: A low floor vehicle can reduce, during curved track traveling of a vehicle, the lateral pressure of the vehicle, can prevent occurrence of vibration and creaking sounds of the vehicle, can improve riding comfort for passengers, and can reduce wear of wheel flanges, is provided. The low floor vehicle includes: a journal member which couples a pair of wheels and is attached to a truck frame; and a truck frame lateral beam arranged along a vehicle width direction closer to the center of the truck frame than the journal member. The journal member can turn with respect to the truck frame. A coupling member which couples the journal member and the truck frame lateral beam is provided. The coupling member is attached to the center in the vehicle width direction of the truck frame lateral beam so as to be pivotable around an axis extending in a vehicle height direction.
    Type: Application
    Filed: June 16, 2009
    Publication date: March 1, 2012
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Yoshiki Okubo, Hiroyuki Kono, Kousuke Katahira
  • Publication number: 20120037031
    Abstract: A the low floor vehicle includes a journal member which couples a pair of wheels and is attached to a truck frame; and a truck frame lateral beam arranged along a vehicle width direction closer to the center of the truck frame than the journal member. The journal member is turnable with respect to the struck frame. A pair of left and right stub links extending between the journal member and the truck frame lateral beam, are provided. Axes passing both ends of the pair of stub links are arranged to tilt so as to widen a space between the ends in the vehicle width direction with going from the truck frame lateral beam toward the journal member. Both the ends of the stub links are attached to be pivotable respectively around axes which extend in a height direction to the journal member and the truck frame lateral beam.
    Type: Application
    Filed: June 16, 2009
    Publication date: February 16, 2012
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Yoshiki Okubo, Hiroyuki Kono, Kousuke Katahira
  • Publication number: 20120012028
    Abstract: A track-guided vehicle wheel truck facilitates vehicle maintenance and enables reduction in costs. The track vehicle wheel truck includes guide frames arranged along the forward and rearward directions of the vehicle on the inside of the vehicle width direction in the running wheels, and fixed to knuckles; a tie rod arranged on the center side of the forward and rearward directions in the vehicle along the vehicle width direction, and interlock with the guide frames; guide wheel receivers disposed toward the inside of the vehicle width direction from the guide frames on the vehicle end side and the center side relative to an axis of the running wheels; and a steering axle arranged along the vehicle width direction, and are able to turn the running wheels, the knuckles, and the guide frames by installing a kingpin at both ends thereof.
    Type: Application
    Filed: August 25, 2009
    Publication date: January 19, 2012
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Mihoko Shiroyama, Yoshiki Okubo, Kousuke Katahira
  • Publication number: 20110239899
    Abstract: A low floor vehicle reduces, when the vehicle enters a curved track, the lateral force of the vehicle, prevents occurrence of vibration and creaking sounds of the vehicle, improves riding quality of passengers, and reduces wear of wheel flanges. A low floor vehicle includes a bogie frame 9 of a bogie 7, a pair of bogie frame cross beams 9a arranged along a vehicle lateral direction in the middle of a vehicle longitudinal direction of the bogie frame 9 and arranged spaced apart from each other in the vehicle longitudinal direction, and a pair of wheels 8 provided in each of a vehicle front edge direction and a vehicle rear edge direction with respect to the pair of bogie frame cross beams 9a of the bogie frame 9 and configured to travel on a track 1.
    Type: Application
    Filed: June 11, 2009
    Publication date: October 6, 2011
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Yoshiki Okubo, Hiroyuki Kono, Kousuke Katahira