Patents by Inventor Yoshitaka Shibata

Yoshitaka Shibata 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: 20220174767
    Abstract: A communication device that establishes connection to an access point is configured to perform processing for establishing connection to the access point and communicating data with the access point through a first communication channel, processing for notifying the access point of suppression of data communication, processing for data communication for a predetermined period through a second communication channel after the notification of suppression of data communication, processing for resuming data communication with the access point through the first communication channel after data communication through the second communication channel, and processing for determining timing to perform processing for data communication through the second communication channel.
    Type: Application
    Filed: September 23, 2021
    Publication date: June 2, 2022
    Inventors: Sho Kurose, Takayuki Shibata, Satoshi Miyamoto, Yoshitaka Imura
  • Patent number: 11338385
    Abstract: A machine component includes a first region having a first linear expansion coefficient, and a second region having a second linear expansion coefficient greater than the first linear expansion coefficient and joined to the first region. A region including an outer periphery of an interface between the first region and the second region is inclined toward the second region side over the entire periphery. On a surface of the first region, a groove is formed to extend along the outer periphery of the interface.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: May 24, 2022
    Assignee: KOMATSU LTD.
    Inventors: Toshikazu Matsuyama, Masaharu Amano, Yoshitaka Shibata
  • Patent number: 10906126
    Abstract: The method includes a step of preparing a first member made of a first metal and a second member made of a second metal having a smaller deformation resistance than the first metal, and a step of joining the first member and the second member. The step of joining includes a step of disposing the second member in a cavity of a mold, a step of heating the first member and the second member by relatively rotating the first member with respect to the second member, while pressing the first member against the second member, without changing a positional relationship, and a step of cooling the first member and the second member with the members being in contact with each other. In the step of disposing, the second member is disposed such that a second member contact surface is surrounded by the sidewall of the cavity.
    Type: Grant
    Filed: April 15, 2015
    Date of Patent: February 2, 2021
    Assignee: KOMATSU LTD.
    Inventors: Toshikazu Matsuyama, Masaharu Amano, Yoshitaka Shibata
  • Patent number: 10888951
    Abstract: The method for producing a metal member includes a step of preparing a first member made of a first metal and having a recessed portion formed therein, and a second member made of a second metal having a smaller deformation resistance than the first metal, and a step of joining the first member and the second member. The step of joining includes a step of increasing temperatures of the first member and the second member by relatively rotating the second member with respect to the first member while pressing the second member against the first member with at least a part of the second member being received in the recessed portion, and a step of stopping the relative rotation of the second member with respect to the first member and cooling the first member and the second member with the members being pressed against each other.
    Type: Grant
    Filed: April 15, 2015
    Date of Patent: January 12, 2021
    Assignee: KOMATSU LTD.
    Inventors: Toshikazu Matsuyama, Masaharu Amano, Yoshitaka Shibata
  • Patent number: 10618130
    Abstract: The method includes a step of preparing a first member made of a first metal and a second member made of a second metal having a smaller deformation resistance than the first metal, and a step of joining the first member and the second member. The step of joining includes a step of heating the first member and the second member by relatively rotating the first member and the second member, while pressing the first member and the second member against each other, without changing a relative positional relationship therebetween, and a step of cooling the first member and the second member heated, while being pressed against each other. In a first contact surface which is a surface of the first member coming into contact with the second member, a recess is formed so as to include a region intersecting the axis of rotation.
    Type: Grant
    Filed: April 15, 2015
    Date of Patent: April 14, 2020
    Assignee: KOMATSU LTD.
    Inventors: Toshikazu Matsuyama, Masaharu Amano, Yoshitaka Shibata
  • Patent number: 10583518
    Abstract: The method for producing a metal member includes a step of preparing a first member made of a first metal, a second member made of a second metal, and a third member made of a third metal, and a step of joining the first member and the second member via the third member. The step of joining includes a step of heating the first member, the second member, and the third member by stacking the first member, the third member, and the second member in this order and relatively rotating the first member about an axis of rotation, while pressing the first member against the third member, without changing a positional relationship, and a step of cooling the first member, the second member, and the third member heated, with the members being in the stacked state.
    Type: Grant
    Filed: April 15, 2015
    Date of Patent: March 10, 2020
    Assignee: KOMATSU LTD.
    Inventors: Toshikazu Matsuyama, Masaharu Amano, Yoshitaka Shibata
  • Patent number: 10544945
    Abstract: A heat supply system with a first temperature detection unit that detects a first temperature of hot water in a tank and a second temperature detection unit that detects a second temperature above the first temperature detection unit. When the first temperature is a first lower limit temperature or less, where a temperature increase operation by a combined heat and power supply device is permitted, a control device operates the combined heat and power supply device and flow state adjustment devices such that a heat medium circulates between the combined heat, power supply device, and hot water storage device. When the second temperature is a second lower limit temperature or less, where a temperature increase operation by a boiler device is permitted, the control device operates the boiler device and the flow state adjustment devices such that the heat medium circulates between the boiler device and hot water storage device.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: January 28, 2020
    Assignee: Osaka Gas Co., Ltd.
    Inventor: Yoshitaka Shibata
  • Patent number: 10436192
    Abstract: A sliding component and its producing method are provided. The sliding component includes a base section made of steel or cast iron, and a sliding section having a sliding surface, made of copper alloy including hard particles, and joined to the base section. The hard particles in the sliding section are arranged such that those in a region including an outer periphery of the interface with the base section have their longitudinal directions coinciding with the directions along the outer periphery as compared to those in an inner peripheral side. This improves the durability of the sliding section in its region including the outer periphery of the interface with the base section.
    Type: Grant
    Filed: April 15, 2015
    Date of Patent: October 8, 2019
    Assignee: KOMATSU LTD.
    Inventors: Toshikazu Matsuyama, Masaharu Amano, Yoshitaka Shibata
  • Patent number: 10408164
    Abstract: A waste heat recovery device with a first heat medium side inlet; a first heat medium side outlet; a first heat medium flow path; a second heat medium side inlet; a second heat medium side outlet; a second heat medium flow path; a heat exchanger that exchanges heat between the first heat medium and second heat medium; an expansion tank in the first heat medium flow path; a bypass flow path that causes the first heat medium to flow and bypass the heat exchanger; and a mixer where the bypass flow path and first heat medium flow path merge together. The mixer is configured to adjust a ratio of a flow rate of the first heat medium in the bypass flow path and a flow rate of the first heat medium in the heat exchanger, such that the temperature of the first heat medium after merging approaches a predetermined temperature.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: September 10, 2019
    Assignee: Osaka Gas Co., Ltd.
    Inventor: Yoshitaka Shibata
  • Patent number: 10384301
    Abstract: A piston shoe as a sliding component includes a base section, which is made of steel, and a sliding section having a sliding surface, which is made of copper alloy and joined to the base section. The base section and the sliding section are joined, with a base section joint region being formed in the base section, the base section joint region including a base section joint surface that is a surface joined to the sliding section and having smaller grains than other regions in the base section.
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: August 20, 2019
    Assignee: KOMATSU LTD.
    Inventors: Yoshitaka Shibata, Masaharu Amano, Takuya Tsumura, Kazuhiro Nakata
  • Publication number: 20180339361
    Abstract: A machine component includes a first region having a first linear expansion coefficient, and a second region having a second linear expansion coefficient greater than the first linear expansion coefficient and joined to the first region. A region including an outer periphery of an interface between the first region and the second region is inclined toward the second region side over the entire periphery. On a surface of the first region, a groove is formed to extend along the outer periphery of the interface.
    Type: Application
    Filed: October 29, 2015
    Publication date: November 29, 2018
    Applicant: KOMATSU LTD.
    Inventors: Toshikazu MATSUYAMA, Masaharu AMANO, Yoshitaka SHIBATA
  • Patent number: 10071440
    Abstract: A metal member producing device includes a spindle, a base portion, and a driving portion which drives at least one of the spindle and the base portion in an axial direction of the spindle. Of the spindle and the base portion, one includes a first holding portion for holding a first member. The other has disposed thereon a mold for holding a second member to oppose the first holding portion. The mold includes a bottom wall and a sidewall that extends from the bottom wall in a direction intersecting the bottom wall. The sidewall has a resistive wall formed thereon, the resistive wall being a wall surface inclined with respect to a plane parallel to the axial direction of the spindle so as to face the bottom wall side.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: September 11, 2018
    Assignee: KOMATSU LTD.
    Inventors: Yoshitaka Shibata, Atsushi Saitou, Masaharu Amano
  • Publication number: 20180085848
    Abstract: The method for producing a metal member includes a step of preparing a first member made of a first metal and having a recessed portion formed therein, and a second member made of a second metal having a smaller deformation resistance than the first metal, and a step of joining the first member and the second member. The step of joining includes a step of increasing temperatures of the first member and the second member by relatively rotating the second member with respect to the first member while pressing the second member against the first member with at least a part of the second member being received in the recessed portion, and a step of stopping the relative rotation of the second member with respect to the first member and cooling the first member and the second member with the members being pressed against each other.
    Type: Application
    Filed: April 15, 2015
    Publication date: March 29, 2018
    Applicant: KOMATSU LTD.
    Inventors: Toshikazu MATSUYAMA, Masaharu AMANO, Yoshitaka SHIBATA
  • Publication number: 20180071859
    Abstract: The method for producing a metal member includes a step of preparing a first member made of a first metal, a second member made of a second metal, and a third member made of a third metal, and a step of joining the first member and the second member via the third member. The step of joining includes a step of heating the first member, the second member, and the third member by stacking the first member, the third member, and the second member in this order and relatively rotating the first member about an axis of rotation, while pressing the first member against the third member, without changing a positional relationship, and a step of cooling the first member, the second member, and the third member heated, with the members being in the stacked state.
    Type: Application
    Filed: April 15, 2015
    Publication date: March 15, 2018
    Applicant: KOMATSU LTD.
    Inventors: Toshikazu MATSUYAMA, Masaharu AMANO, Yoshitaka SHIBATA
  • Publication number: 20180071858
    Abstract: The method includes a step of preparing a first member made of a first metal and a second member made of a second metal having a smaller deformation resistance than the first metal, and a step of joining the first member and the second member. The step of joining includes a step of disposing the second member in a cavity of a mold, a step of heating the first member and the second member by relatively rotating the first member with respect to the second member, while pressing the first member against the second member, without changing a positional relationship, and a step of cooling the first member and the second member with the members being in contact with each other. In the step of disposing, the second member is disposed such that a second member contact surface is surrounded by the sidewall of the cavity.
    Type: Application
    Filed: April 15, 2015
    Publication date: March 15, 2018
    Applicant: KOMATSU LTD.
    Inventors: Toshikazu MATSUYAMA, Masaharu AMANO, Yoshitaka SHIBATA
  • Publication number: 20180056438
    Abstract: The method includes a step of preparing a first member made of a first metal and a second member made of a second metal having a smaller deformation resistance than the first metal, and a step of joining the first member and the second member. The step of joining includes a step of heating the first member and the second member by relatively rotating the first member and the second member, while pressing the first member and the second member against each other, without changing a relative positional relationship therebetween, and a step of cooling the first member and the second member heated, while being pressed against each other. In a first contact surface which is a surface of the first member coming into contact with the second member, a recess is formed so as to include a region intersecting the axis of rotation.
    Type: Application
    Filed: April 15, 2015
    Publication date: March 1, 2018
    Applicant: KOMATSU LTD.
    Inventors: Toshikazu MATSUYAMA, Masaharu AMANO, Yoshitaka SHIBATA
  • Publication number: 20180051693
    Abstract: A sliding component and its producing method are provided. The sliding component includes a base section made of steel or cast iron, and a sliding section having a sliding surface, made of copper alloy including hard particles, and joined to the base section. The hard particles in the sliding section are arranged such that those in a region including an outer periphery of the interface with the base section have their longitudinal directions coinciding with the directions along the outer periphery as compared to those in an inner peripheral side. This improves the durability of the sliding section in its region including the outer periphery of the interface with the base section.
    Type: Application
    Filed: April 15, 2015
    Publication date: February 22, 2018
    Applicant: KOMATSU LTD.
    Inventors: Toshikazu MATSUYAMA, Masaharu AMANO, Yoshitaka SHIBATA
  • Publication number: 20180010809
    Abstract: A heat supply system with a first temperature detection unit that detects a first temperature of hot water in a tank, and a second temperature detection unit that detects a second temperature above the first temperature detection unit. When the first temperature is a first lower limit temperature or less, where a temperature increase operation by a combined heat and power supply device is permitted, a control device operates the combined heat and power supply device and flow state adjustment devices such that a heat medium circulates between the combined heat, power supply device, and hot water storage device. When the second temperature is a second lower limit temperature or less, where a temperature increase operation by a boiler device is permitted, the control device operates the boiler device and the flow state adjustment devices such that the heat medium circulates between the boiler device and hot water storage device.
    Type: Application
    Filed: November 20, 2015
    Publication date: January 11, 2018
    Inventor: Yoshitaka SHIBATA
  • Publication number: 20170370324
    Abstract: A waste heat recovery device with a first heat medium side inlet; a first heat medium side outlet; a first heat medium flow path; a second heat medium side inlet; a second heat medium side outlet; a second heat medium flow path; a heat exchanger that exchanges heat between the first heat medium and second heat medium; an expansion tank in the first heat medium flow path; a bypass flow path that causes the first heat medium to flow and bypass the heat exchanger; and a mixer where the bypass flow path and first heat medium flow path merge together. The mixer is configured to adjust a ratio of a flow rate of the first heat medium in the bypass flow path and a flow rate of the first heat medium in the heat exchanger, such that the temperature of the first heat medium after merging approaches a predetermined temperature.
    Type: Application
    Filed: November 20, 2015
    Publication date: December 28, 2017
    Inventor: Yoshitaka Shibata
  • Publication number: 20170203383
    Abstract: A metal member producing device includes a spindle, a base portion, and a driving portion which drives at least one of the spindle and the base portion in an axial direction of the spindle. Of the spindle and the base portion, one includes a first holding portion for holding a first member. The other has disposed thereon a mold for holding a second member to oppose the first holding portion. The mold includes a bottom wall and a sidewall that extends from the bottom wall in a direction intersecting the bottom wall. The sidewall has a resistive wall formed thereon, the resistive wall being a wall surface inclined with respect to a plane parallel to the axial direction of the spindle so as to face the bottom wall side.
    Type: Application
    Filed: August 29, 2014
    Publication date: July 20, 2017
    Applicant: KOMATSU LTD.
    Inventors: Yoshitaka SHIBATA, Atsushi SAITOU, Masaharu AMANO