Patents by Inventor Takeshi Oi

Takeshi Oi 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: 11946219
    Abstract: A work machine includes work equipment. A control device of the work machine includes a trajectory generation unit, and an operation signal output unit. The trajectory generation unit generates a target trajectory of the work equipment according to an excavation curve ratio determined in advance. The excavation curve ratio is expressed as a ratio of an excavation depth to an excavation length. The operation signal output unit outputs an operation signal for the work equipment according to the target trajectory.
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: April 2, 2024
    Assignee: KOMATSU LTD.
    Inventors: Tomoki Konda, Takeshi Oi, Atsunori Kikuchi
  • Publication number: 20230074375
    Abstract: An automatic control determination unit determines whether to start automatic dumping control. A dumping control unit generates a first command to rotate a bucket in a dump direction until an inclination of the bucket reaches a predetermined dumping completion angle upon determining to start the automatic dumping control. The dumping control unit generates a second command to rotate a boom in a raising direction during a period until the inclination of the bucket reaches the dumping completion angle from an inclination at the time of start of the automatic dumping control.
    Type: Application
    Filed: April 16, 2021
    Publication date: March 9, 2023
    Inventors: Ryuta OKUWAKI, Takeshi OI, Kenji OKAMURA
  • Patent number: 11565121
    Abstract: A composite electrode intracardiac defibrillation catheter includes a first electrode group including at least two first electrodes for detecting an electrophysiological electrical signal of a site or a cell group in a heart chamber, and a second electrode group including at least one second electrode located between an adjacent pair of the at least two first electrodes for causing an electric current by a high-voltage defibrillation electric shock for defibrillation to flow in a contact site in the heart chamber or a contact site in a vein, and a conductive length of a surface of the at least one second electrode in a longitudinal direction of the composite electrode intracardiac defibrillation catheter is longer than a conductive length of each of the at least two first electrodes.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: January 31, 2023
    Assignee: INTER NOVA MEDICAL CO., LTD.
    Inventor: Takeshi Oi
  • Publication number: 20220316174
    Abstract: A work machine comprises: a work implement; a hydraulic cylinder; a hydraulic pump that supplies the hydraulic oil to the hydraulic cylinder via a hydraulic circuit; a relief valve that can set a relief pressure of the hydraulic circuit to either a first set pressure or a second set pressure higher than the first set pressure; a detection unit that detects at least one of a pressure of the hydraulic oil in the hydraulic circuit and a speed of the work implement; and a relief pressure changing unit that changes a relief pressure of the relief valve from the first set pressure to the second set pressure based on a detection value of at least one of the pressure of the hydraulic oil in the hydraulic circuit and the speed of the work implement when the controlled state of the work implement is the excavation state.
    Type: Application
    Filed: June 30, 2020
    Publication date: October 6, 2022
    Applicant: KOMATSU LTD.
    Inventors: Tomoki KONDA, Takeshi OI, Kenjiro SHIMADA, Kenji OHIWA
  • Publication number: 20210254312
    Abstract: A control device for a work machine includes a three-dimensional map acquisition unit, a boundary specification unit, and an excavation start point determination unit. The work machine includes a travel body, a swing body supported by the travel body, and work equipment provided to the swing body and having a bucket. The three-dimensional map acquisition unit acquires a three-dimensional map indicating a shape around the work machine. The boundary specification unit specifies a traveling road boundary line in terrain shown by the three-dimensional map. The traveling road boundary line is a boundary line between a traveling road surface on which a transport vehicle is capable of traveling, and an excavation target by the work equipment. The excavation start point determination unit determines a point on the traveling road boundary line or a point above the traveling road boundary line as an excavation start point by the work equipment.
    Type: Application
    Filed: July 19, 2019
    Publication date: August 19, 2021
    Inventors: Takeshi OI, Tomoki KONDA
  • Publication number: 20210246625
    Abstract: A loading machine includes a swing body, work equipment provided on the swing body, a posture measuring device to measure a posture of the swing body, and a depth detecting device to detect a depth of at least part of a surrounding of the swing body in a detection range. A control device controls the loading machine. The control device includes a posture information acquisition unit that acquires posture information indicating the posture measured, a detection information acquisition unit that acquires depth information indicating the depth detected, a target azimuth direction determination unit, and an output unit. The target azimuth direction determination unit determines a target azimuth direction in swing control based on the posture information and the depth information acquired when the swing body is stopped swinging. The output unit outputs a swing operation signal based on the target azimuth direction.
    Type: Application
    Filed: July 18, 2019
    Publication date: August 12, 2021
    Inventors: Takeshi OI, Kazuhiro HATAKE
  • Publication number: 20210246627
    Abstract: A work machine includes work equipment. A control device of the work machine includes a trajectory generation unit, and an operation signal output unit. The trajectory generation unit generates a target trajectory of the work equipment according to an excavation curve ratio determined in advance. The excavation curve ratio is expressed as a ratio of an excavation depth to an excavation length. The operation signal output unit outputs an operation signal for the work equipment according to the target trajectory.
    Type: Application
    Filed: August 28, 2019
    Publication date: August 12, 2021
    Inventors: Tomoki KONDA, Takeshi OI, Atsunori KIKUCHI
  • Publication number: 20210164192
    Abstract: A loading machine includes a swing body and work equipment with a bucket. A control device of the loading machine includes a loading target specifying unit that specifies a position and shape of a loading target, an avoidance position specifying unit, and a movement processing unit. The avoidance position specifying unit specifies an interference avoidance position based on the position and shape of the loading target. The movement processing unit outputs an operation signal to drive only the swing body until the bucket reaches the interference avoidance position from a loading position above the loading target, to cause the bucket to move to the interference avoidance position. The movement processing unit outputs an operation signal to drive the swing body and the work equipment after the bucket has reached the interference avoidance position, to cause the bucket to move to an excavation position above an excavation target.
    Type: Application
    Filed: August 28, 2019
    Publication date: June 3, 2021
    Inventors: Tomoki KONDA, Kazuhiro HATAKE, Takeshi OI, Masanori AIZAWA
  • Publication number: 20200384276
    Abstract: The composite electrode type intracardiac defibrillation catheter of the present invention includes a first electrode group including two or more first electrodes for detecting an electrophysiological electrical signal of a site or a cell group in a heart chamber, and a second electrode group including one or more second electrodes located between adjacent two of the first electrodes for causing an electric current by a high-voltage defibrillation electric shock for defibrillation to flow in a contact site in the heart chamber or in contact sites in the heart chamber and in a vein, and a conductive length of a surface of the second electrode in a longitudinal direction of the catheter shaft is longer than the conductive length of the first electrode.
    Type: Application
    Filed: March 27, 2018
    Publication date: December 10, 2020
    Applicants: INTER NOVA MEDICAL CO., LTD., FUKUDA DENSHI CO., LTD.
    Inventor: Takeshi OI
  • Patent number: 10352428
    Abstract: A slide component comprises a base member and a plated layer. The base member is made of a titanium alloy including beta phase of titanium. The base member includes a surface having a plurality of recesses. The plated layer is provided on the surface of the base member.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: July 16, 2019
    Assignee: SHIMANO INC.
    Inventors: Dai Yokozawa, Wataru Yamauchi, Michiaki Komada, Takeshi Oi
  • Patent number: 10352382
    Abstract: A bicycle disc brake rotor, having a rotational center axis, comprises an outer portion having plural layers including first and second braking surfaces in opposite axial directions. The plural layers include a first layer made of a copper or a copper alloy.
    Type: Grant
    Filed: July 27, 2016
    Date of Patent: July 16, 2019
    Assignee: Shimano Inc.
    Inventors: Takeshi Oi, Masanori Taniguchi, Toru Iwai, Masahiro Nakakura, Noriko Masuta, Yusuke Hosomi
  • Patent number: 10240619
    Abstract: A bicycle operating device comprises a base, an operating member, a hydraulic cylinder, a piston, a connecting link, and a guiding structure. The operating member is pivotally coupled to the base. The hydraulic cylinder is mounted to the base. The piston is movably provided in the hydraulic cylinder. The connecting link is pivotally coupled to each of the operating member and the piston to move the piston relative to the hydraulic cylinder in response to a pivotal movement of the operating member relative to the base. The guiding structure is coupled to the piston to guide the piston relative to the base.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: March 26, 2019
    Assignee: SHIMANO INC.
    Inventor: Takeshi Oi
  • Patent number: 10023139
    Abstract: A bicycle control system is basically provided with a first power supply, a plurality of electric drive devices and an operating apparatus. The electric drive devices are electrically coupled to the first power supply to receive electric power supplied from the first power supply. The operating apparatus wirelessly operates the electric drive devices by wireless signals.
    Type: Grant
    Filed: May 26, 2014
    Date of Patent: July 17, 2018
    Assignee: Shimano Inc.
    Inventors: Etsuyoshi Watarai, Hideki Ikemoto, Takeshi Oi
  • Publication number: 20180031061
    Abstract: A bicycle disc brake rotor, having a rotational center axis, comprises an outer portion having plural layers including first and second braking surfaces in opposite axial directions. The plural layers include a first layer made of a copper or a copper alloy.
    Type: Application
    Filed: July 27, 2016
    Publication date: February 1, 2018
    Inventors: Takeshi Oi, Masanori Taniguchi, Toru Iwai, Masahiro Nakakura, Noriko Masuta, Yusuke Hosomi
  • Publication number: 20170276226
    Abstract: A slide component comprises a base member and a plated layer. The base member is made of a titanium alloy including beta phase of titanium. The base member includes a surface having a plurality of recesses. The plated layer is provided on the surface of the base member.
    Type: Application
    Filed: March 28, 2016
    Publication date: September 28, 2017
    Applicant: SHIMANO INC.
    Inventors: Dai YOKOZAWA, Wataru YAMAUCHI, Michiaki KOMADA, Takeshi OI
  • Publication number: 20170227022
    Abstract: A bicycle operating device comprises a base, an operating member, a hydraulic cylinder, a piston, a connecting link, and a guiding structure. The operating member is pivotally coupled to the base. The hydraulic cylinder is mounted to the base. The piston is movably provided in the hydraulic cylinder. The connecting link is pivotally coupled to each of the operating member and the piston to move the piston relative to the hydraulic cylinder in response to a pivotal movement of the operating member relative to the base. The guiding structure is coupled to the piston to guide the piston relative to the base.
    Type: Application
    Filed: February 4, 2016
    Publication date: August 10, 2017
    Applicant: SHIMANO INC.
    Inventor: Takeshi OI
  • Patent number: 9643678
    Abstract: A bicycle setting calculating system comprises a drive-train calculating device. The drive-train calculating device is configured to calculate reference drive-train information as a reference for a setting of a drive train based on bicycle information and rider information. The bicycle information relates to a bicycle configured to be equipped with the drive train. The rider information relates to a rider who is to ride the bicycle.
    Type: Grant
    Filed: July 17, 2014
    Date of Patent: May 9, 2017
    Assignee: SHIMANO INC.
    Inventors: Ryuji Abe, Mitsuru Tauchi, Takeshi Oi
  • Patent number: 9299628
    Abstract: A power semiconductor module is provided which is capable of keeping low the degrees of increases in temperatures of wide bandgap semiconductor elements, reducing the degree of increase in chip's total surface area of the wide bandgap semiconductor elements, and being fabricated at low costs, when Si semiconductor elements and the wide bandgap semiconductor elements are placed within one and the same power semiconductor module. The Si semiconductor elements are placed in a central region of the power semiconductor module, and the wide bandgap semiconductor elements are placed on opposite sides relative to the central region or in edge regions surrounding the central region.
    Type: Grant
    Filed: July 5, 2012
    Date of Patent: March 29, 2016
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takayoshi Miki, Yasushi Nakayama, Takeshi Oi, Kazuhiro Tada, Shiori Idaka, Shigeru Hasegawa, Tomohiro Kobayashi, Yukio Nakashima
  • Publication number: 20160016624
    Abstract: A bicycle setting calculating system comprises a drive-train calculating device. The drive-train calculating device is configured to calculate reference drive-train information as a reference for a setting of a drive train based on bicycle information and rider information. The bicycle information relates to a bicycle configured to be equipped with the drive train. The rider information relates to a rider who is to ride the bicycle.
    Type: Application
    Filed: July 17, 2014
    Publication date: January 21, 2016
    Applicant: SHIMANO INC.
    Inventors: Ryuji ABE, Mitsuru TAUCHI, Takeshi OI
  • Publication number: 20150343518
    Abstract: A method of manufacturing a disc brake rotor comprises preparing at least one elongated plate having a first end and a second end opposite to the first end in a longitudinal direction of the at least one elongated plate. The method comprises bending the at least one elongated plate in an arc shape.
    Type: Application
    Filed: June 1, 2014
    Publication date: December 3, 2015
    Applicant: SHIMANO INC.
    Inventor: Takeshi OI