Patents by Inventor Hisashi Miyasaka

Hisashi Miyasaka 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: 10258909
    Abstract: A work vehicle includes a work implement and an operating fluid tank. The operating fluid tank has a tank body and a strainer. The tank body is for collecting operating fluid for driving the work implement. The strainer is installed inside the tank body and includes a cylindrical filter and a cover member. The cylindrical filter is disposed with an axis extending in a vertical direction. The cover member includes an upper plate part and a cylindrical part. The upper plate part of the cover member covers an upper surface of the filter. The cylindrical part of the cover member extends downward from an outer edge part of the upper plate part and covers an upper side surface part of the filter with a gap between the side surface of the filter and the cylindrical part, while allowing a lower side surface part of the filter to be exposed.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: April 16, 2019
    Assignees: KOMATSU LTD., YAMASHIN-FILTER CORP.
    Inventor: Hisashi Miyasaka
  • Patent number: 8954242
    Abstract: A wheel loader includes a vehicle body frame, an engine, a working unit including a boom and a bucket, a cab accommodating therein an operator seat, a boom operating member an operating member that switches forward/rearward travelling, a first sensor configured and arranged to detect that the operating member is located in a neutral position, and a second sensor configured and arranged to detect that the boom has been operated. An engine control unit is configured to limit a maximum rotation speed of the engine to a predetermined rotation speed when the operating member for switching of forward/rearward travelling is located in the neutral position and the boom operating member has been operated.
    Type: Grant
    Filed: September 19, 2012
    Date of Patent: February 10, 2015
    Assignee: Komatsu Ltd.
    Inventor: Hisashi Miyasaka
  • Publication number: 20140238923
    Abstract: A work vehicle includes a work implement and an operating fluid tank. The operating fluid tank has a tank body and a strainer. The tank body is for collecting operating fluid for driving the work implement. The strainer is installed inside the tank body and includes a cylindrical filter and a cover member. The cylindrical filter is disposed with an axis extending in a vertical direction. The cover member includes an upper plate part and a cylindrical part. The upper plate part of the cover member covers an upper surface of the filter. The cylindrical part of the cover member extends downward from an outer edge part of the upper plate part and covers an upper side surface part of the filter with a gap between the side surface of the filter and the cylindrical part, while allowing a lower side surface part of the filter to be exposed.
    Type: Application
    Filed: February 27, 2013
    Publication date: August 28, 2014
    Applicant: KOMATSU LTD.
    Inventor: Hisashi Miyasaka
  • Patent number: 8727588
    Abstract: A wheel loader, which is a construction machine, includes: a rear vehicle body and a front frame; an operating device provided at the front frame; and a working lamp unit attached to a sidewall of the rear vehicle body. The working lamp unit has a light source and a bracket including a downward illuminating portion that covers at least an upper part of the light source and that protrudes more in the light illumination direction than a lens surface of the light source and that is inclined downward with respect to a horizontal direction. Thus, there is obtained a construction machine including a working lamp, in which visibility can be ensured both in a distant area and in an area near the construction machine.
    Type: Grant
    Filed: July 23, 2012
    Date of Patent: May 20, 2014
    Assignee: Komatsu Ltd.
    Inventors: Hisashi Miyasaka, Kazuyuki Sagara, Shuichi Osawa
  • Publication number: 20140078761
    Abstract: A wheel loader, which is a construction machine, includes: a rear vehicle body and a front frame; an operating device provided at the front frame; and a working lamp unit attached to a sidewall of the rear vehicle body. The working lamp unit has a light source and a bracket including a downward illuminating portion that covers at least an upper part of the light source and that protrudes more in the light illumination direction than a lens surface of the light source and that is inclined downward with respect to a horizontal direction. Thus, there is obtained a construction machine including a working lamp, in which visibility can be ensured both in a distant area and in an area near the construction machine.
    Type: Application
    Filed: July 23, 2012
    Publication date: March 20, 2014
    Applicant: KOMATSU LTD.
    Inventors: Hisashi Miyasaka, Kazuyuki Sagara, Shuichi Osawa
  • Publication number: 20140058649
    Abstract: A wheel loader includes a vehicle body frame, an engine, a working unit including a boom and a bucket, a cab accommodating therein an operator seat, a boom operating member an operating member that switches forward/rearward travelling, a first sensor configured and arranged to detect that the operating member is located in a neutral position, and a second sensor configured and arranged to detect that the boom has been operated. An engine control unit is configured to limit a maximum rotation speed of the engine to a predetermined rotation speed when the operating member for switching of forward/rearward travelling is located in the neutral position and the boom operating member has been operated.
    Type: Application
    Filed: September 19, 2012
    Publication date: February 27, 2014
    Applicant: Komatsu Ltd.
    Inventor: Hisashi Miyasaka