Patents by Inventor Keita Mutou

Keita Mutou 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).

  • Work implement and retaining pin assembly
    Patent number: 8495826
    Abstract: A work implement includes a ground engaging tool with a first through-hole, an adapter with a second through-hole, a retaining pin, a metal bushing and a metal retainer. The retaining pin is inserted into the first and second through-holes disposed in a state in which the ground engaging tool is in contact with the adapter. The retaining pin is inserted in an inside of an cylindrical member of the bushing, which is disposed at an end portion of the retaining pin inside the first through-hole. The metal retainer prevents the bushing from coming loose from the retaining pin by sandwiching the bushing between the metal retainer and the adapter at the end of the retaining pin. The bushing is disposed in a state that allows movement in an axial direction of the retaining pin between the adapter and the retainer on an outer peripheral face of the retaining pin.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: July 30, 2013
    Assignee: Komatsu Ltd.
    Inventors: Daijirou Itou, Kouzou Ishida, Takanori Nagata, Keita Mutou
  • WORK MACHINE AND MOUNTING PIN ASSEMBLY
    Publication number: 20120222336
    Abstract: A work implement includes a ground engaging tool with a first through-hole, an adapter with a second through-hole, a retaining pin, a metal bushing and a metal retainer. The retaining pin is inserted into the first and second through-holes disposed in a state in which the ground engaging tool is in contact with the adapter. The retaining pin is inserted in an inside of an cylindrical member of the bushing, which is disposed at an end portion of the retaining pin inside the first through-hole. The metal retainer prevents the bushing from coming loose from the retaining pin by sandwiching the bushing between the metal retainer and the adapter at the end of the retaining pin. The bushing is disposed in a state that allows movement in an axial direction of the retaining pin between the adapter and the retainer on an outer peripheral face of the retaining pin.
    Type: Application
    Filed: March 30, 2011
    Publication date: September 6, 2012
    Applicant: KOMATSU LTD.
    Inventors: Daijirou Itou, Kouzou Ishida, Takanori Nagata, Keita Mutou