Patents by Inventor Mutsuhisa ISHIHARA

Mutsuhisa ISHIHARA 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).

  • Vertical multicylinder straight engine
    Patent number: 10920650
    Abstract: There is provided a vertical multicylinder straight engine in which the temperature distribution of a plurality of cylinder barrels is made close to an even state. A cylinder jacket includes: a jacket inlet; a separated channel; a plurality of separated outlets; and heat dissipater channels for dissipating heat of the respective cylinder barrels to engine cooling water introduced through the separated outlets. The plurality of separated outlets include: a front-side separated outlet to a front-end barrel; a rear-side separated outlet to a rear-end barrel; and middle separated outlets to middle barrels between the front-end barrel and the rear-end barrel, and the jacket inlet is disposed so as to be contained within an entire middle barrel side area that is lateral to the middle barrels and has a front-rear length as long as a length from a front-most end to a rear-most end of the middle barrels.
    Type: Grant
    Filed: May 7, 2018
    Date of Patent: February 16, 2021
    Assignee: KUBOTA CORPORATION
    Inventors: Takayuki Ichikawa, Mutsuhisa Ishihara, Shinya Asada, Yasushi Kobayashi
  • Intake manifold of vertical multicylinder engine
    Patent number: 10612498
    Abstract: There is provided an intake manifold of a multicylinder engine capable of facilitating homogenization of concentration distribution of EGR gas in intake air and distribution of EGR gas into respective cylinders.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: April 7, 2020
    Assignee: KUBOTA Corporation
    Inventors: Mutsuhisa Ishihara, Yasushi Nakamura
  • VERTICAL MULTICYLINDER STRAIGHT ENGINE
    Publication number: 20190003368
    Abstract: There is provided a vertical multicylinder straight engine in which the temperature distribution of a plurality of cylinder barrels is made close to an even state. A cylinder jacket includes: a jacket inlet; a separated channel; a plurality of separated outlets; and heat dissipator channels for dissipating heat of the respective cylinder barrels to engine cooling water introduced through the separated outlets. The plurality of separated outlets include: a front-side separated outlet to a front-end barrel; a rear-side separated outlet to a rear-end barrel; and middle separated outlets to middle barrels between the front-end barrel and the rear-end barrel, and the jacket inlet is disposed so as to be contained within an entire middle barrel side area that is lateral to the middle barrels and has a front-rear length as long as a length from a front-most end to a rear-most end of the middle barrels.
    Type: Application
    Filed: May 7, 2018
    Publication date: January 3, 2019
    Inventors: Takayuki ICHIKAWA, Mutsuhisa ISHIHARA, Shinya ASADA, Yasushi KOBAYASHI
  • INTAKE MANIFOLD OF MULTICYLINDER ENGINE
    Publication number: 20160090949
    Abstract: There is provided an intake manifold of a multicylinder engine capable of facilitating homogenization of concentration distribution of EGR gas in intake air and distribution of EGR gas into respective cylinders.
    Type: Application
    Filed: September 1, 2015
    Publication date: March 31, 2016
    Inventors: Mutsuhisa ISHIHARA, Yasushi NAKAMURA