Patents by Inventor Kazuharu Yoshinaga

Kazuharu Yoshinaga 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: 10766513
    Abstract: An article transport vehicle includes an obstacle sensor having a detection area that includes at least the width of the own vehicle and that expands in the advancing direction, controls the travel of the own vehicle, based on as front inter-object distance corresponding to own-vehicle position information indicating a position of the own vehicle and front object position information indicating a position on a track of a front object that is located in front of the own vehicle and whose position on the track is specified, and sets a length of the detection area E along the advancing direction of the obstacle sensor to be variable according to the front inter-object distance such that the length is less than the front inter-object distance.
    Type: Grant
    Filed: May 2, 2018
    Date of Patent: September 8, 2020
    Assignee: Daifuku Co., Ltd.
    Inventors: Natsuo Takagawa, Kazuharu Yoshinaga, Toshikazu Kato, Yusuke Morimoto
  • Patent number: 10358295
    Abstract: A transport device includes a conveyor, a plurality of movable guide rails each of which is provided at a corresponding one of a plurality of locations along a lateral width direction, a drive shaft disposed to extend along the lateral width direction, and an actuator configured to drivingly rotate the drive shaft. A plurality of cam members are fixed to the drive shaft in respective fixing attitudes. Each movable guide rail of a plurality of movable guide rails is configured to be moved to change a height thereof depending on a fixing attitude of corresponding one of the cam members as the actuator drivingly rotates the drive shaft.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: July 23, 2019
    Assignee: Daifuku Co., Ltd.
    Inventor: Kazuharu Yoshinaga
  • Publication number: 20190062064
    Abstract: A fire protection door in an open position is present above a traveling path of a transport vehicle. The fire protection door is capable of moving downward from the open position to a closed position along a door trajectory. The transport vehicle includes: a control portion; an area detection portion that detects an interference area, which is an area in which a portion of the transport vehicle in the traveling path overlaps the door trajectory; and a descent detection portion that detects a descent of the fire protection door. The control portion performs a retraction control such that the transport vehicle travels to the outside of the interference area when the descent detection portion has detected a descent of the fire protection door in a state in which the transport vehicle is located in the interference area.
    Type: Application
    Filed: August 30, 2018
    Publication date: February 28, 2019
    Inventors: Yuso Ogawa, Natsuo Takagawa, Kazuharu Yoshinaga, Toshikazu Kato, Yusuke Morimoto
  • Publication number: 20180334330
    Abstract: A transport device includes a conveyor, a plurality of movable guide rails each of which is provided at a corresponding one of a plurality of locations along a lateral width direction, a drive shaft disposed to extend along the lateral width direction, and an actuator configured to drivingly rotate the drive shaft. A plurality of cam members are fixed to the drive shaft in respective fixing attitudes. Each movable guide rail of a plurality of movable guide rails is configured to be moved to change a height thereof depending on a fixing attitude of corresponding one of the cam members as the actuator drivingly rotates the drive shaft.
    Type: Application
    Filed: May 17, 2018
    Publication date: November 22, 2018
    Inventor: Kazuharu Yoshinaga
  • Publication number: 20180327009
    Abstract: An article transport vehicle includes an obstacle sensor having a detection area that includes at least the width of the own vehicle and that expands in the advancing direction, controls the travel of the own vehicle, based on as front inter-object distance corresponding to own-vehicle position information indicating a position of the own vehicle and front object position information indicating a position on a track of a front object that is located in front of the own vehicle and whose position on the track is specified, and sets a length of the detection area E along the advancing direction of the obstacle sensor to be variable according to the front inter-object distance such that the length is less than the front inter-object distance.
    Type: Application
    Filed: May 2, 2018
    Publication date: November 15, 2018
    Inventors: Natsuo Takagawa, Kazuharu Yoshinaga, Toshikazu Kato, Yusuke Morimoto
  • Patent number: 9221606
    Abstract: A goods transport facility provided with a detected body installed on the ground side for providing stop control. A detected-body detector on a mobile assembly detects the presence of the detected body. The goods transport facility is switchable between a first and a second control status so that when a fire detector means detects that no goods are on fire, the first control status is maintained. Once the fire detector detects a fire, the status is switched to the second control status. In the first control status, a mobile assembly control provides travel control using an optical distance-measuring sensor to control the actuation of the mobile assembly. In the second control status, the actuation of the mobile assembly travels until detected by the detected-body detector for a goods storage section to which goods are to be transferred, and brought into alignment with the target travel position.
    Type: Grant
    Filed: May 24, 2011
    Date of Patent: December 29, 2015
    Assignee: DAIFUKU CO., LTD
    Inventor: Kazuharu Yoshinaga
  • Patent number: 8670861
    Abstract: An article storage facility with a storing shelf structured by lining up a plurality of article storage units in the vertical direction and the horizontal direction. A stacker crane travels along a traveling rail to transport articles to each article storage unit. The stacker crane has a traveling cart having a pair of vertical-movement guiding masts set upright on both ends of the traveling cart in the front-back width direction, and a vertical-movement platform movable vertically along the pair of vertical-movement guiding masts between the pair of vertical-movement guiding masts. An article transfer device is provided on the vertical-movement platform. The stacker crane has a work frame, having a width in the sideways direction of the traveling cart and the front-back width direction of the traveling cart between the pair of vertical-movement guiding masts structured so as to be freely attached and removed.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: March 11, 2014
    Assignee: Daifu Co., Ltd.
    Inventor: Kazuharu Yoshinaga
  • Publication number: 20130270063
    Abstract: A goods transport facility provided with a detected body installed on the ground side for providing stop control. A detected-body detector on a mobile assembly detects the presence of the detected body. The goods transport facility is switchable between a first and a second control status so that when a fire detector means detects that no goods are on fire, the first control status is maintained. Once the fire detector detects a fire, the status is switched to the second control status. In the first control status, a mobile assembly control provides travel control using an optical distance-measuring sensor to control the actuation of the mobile assembly. In the second control status, the actuation of the mobile assembly travels until detected by the detected-body detector for a goods storage section to which goods are to be transferred, and brought into alignment with the target travel position.
    Type: Application
    Filed: May 24, 2011
    Publication date: October 17, 2013
    Applicant: DAIFUKU CO., LTD.
    Inventor: Kazuharu Yoshinaga
  • Publication number: 20120189411
    Abstract: An article storage facility with a storing shelf structured by lining up a plurality of article storage units in the vertical direction and the horizontal direction. A stacker crane travels along a traveling rail to transport articles to each article storage unit. The stacker crane has a traveling cart having a pair of vertical-movement guiding masts set upright on both ends of the traveling cart in the front-back width direction, and a vertical-movement platform movable vertically along the pair of vertical-movement guiding masts between the pair of vertical-movement guiding masts. An article transfer device is provided on the vertical-movement platform. The stacker crane has a work frame, having a width in the sideways direction of the traveling cart and the front-back width direction of the traveling cart between the pair of vertical-movement guiding masts structured so as to be freely attached and removed.
    Type: Application
    Filed: June 30, 2010
    Publication date: July 26, 2012
    Applicant: DAIFUKU CO., LTD.
    Inventor: Kazuharu Yoshinaga