Patents by Inventor Shuuji Miyasaka

Shuuji 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: 8434562
    Abstract: A ripper operating device is configured to perform operations of a ripper of a work vehicle. The ripper operating device includes a support portion, an operating lever, and an operating switch part. The operating lever is supported by the support portion to be movable with respect to the support portion in a first direction to perform a first operation and non-movable in a second direction. The first direction intersects a front-and-rear direction at an intersection point corresponding to a neutral position of the operating lever to form an acute angle with the front-and-rear direction on a rearward-outward side of the intersection point. The second direction is substantially perpendicular to the first direction and substantially matches with a direction in which a forearm of an operator extends when operating the ripper. The operating switch part is arranged on the operating lever to perform a second operation other than the first operation.
    Type: Grant
    Filed: December 3, 2008
    Date of Patent: May 7, 2013
    Assignee: Komatsu Ltd.
    Inventors: Shuuji Miyasaka, Shigeru Yamamoto, Kazuyuki Suzuki
  • Patent number: 8393670
    Abstract: A cab stopper device 32 is provided between a bracket 23 on a machine frame of a work machine and a cab 25. The cab stopper device 32 restricts relative movement of the cab 25 with respect to the machine frame in the vertical direction. Two through holes 43, 44 are formed in a floor plate 27 of the cab 25. A stopper 48 of the cab stopper device 32 is inserted in the through holes 43, 44 from above. An engaging portion 48a is formed at the lower end of the stopper 48 that projects from the through holes 43, 44 downward of the floor plate 27. The engaging portion 48a is arranged to be engageable with a restricting groove 42 formed in the bracket 23. In this state, a securing portion 48b at the upper end of the stopper 48 is secured to the floor plate 27.
    Type: Grant
    Filed: July 5, 2012
    Date of Patent: March 12, 2013
    Assignee: Komatsu Ltd.
    Inventor: Shuuji Miyasaka
  • Publication number: 20120274097
    Abstract: A cab stopper device 32 is provided between a bracket 23 on a machine frame of a work machine and a cab 25. The cab stopper device 32 restricts relative movement of the cab 25 with respect to the machine frame in the vertical direction. Two through holes 43, 44 are formed in a floor plate 27 of the cab 25. A stopper 48 of the cab stopper device 32 is inserted in the through holes 43, 44 from above. An engaging portion 48a is formed at the lower end of the stopper 48 that projects from the through holes 43, 44 downward of the floor plate 27. The engaging portion 48a is arranged to be engageable with a restricting groove 42 formed in the bracket 23. In this state, a securing portion 48b at the upper end of the stopper 48 is secured to the floor plate 27.
    Type: Application
    Filed: July 5, 2012
    Publication date: November 1, 2012
    Applicant: Komatsu Ltd.
    Inventor: Shuuji Miyasaka
  • Patent number: 8246107
    Abstract: A cab stopper device 32 is provided between a bracket 23 on a machine frame of a work machine and a cab 25. The cab stopper device 32 restricts relative movement of the cab 25 with respect to the machine frame in the vertical direction. Two through holes 43, 44 are formed in a floor plate 27 of the cab 25. A stopper 48 of the cab stopper device 32 is inserted in the through holes 43, 44 from above. An engaging portion 48a is formed at the lower end of the stopper 48 that projects from the through holes 43, 44 downward of the floor plate 27. The engaging portion 48a is arranged to be engageable with a restricting groove 42 formed in the bracket 23. In this state, a securing portion 48b at the upper end of the stopper 48 is secured to the floor plate 27.
    Type: Grant
    Filed: April 13, 2009
    Date of Patent: August 21, 2012
    Assignee: Komatsu, Ltd.
    Inventor: Shuuji Miyasaka
  • Publication number: 20100320802
    Abstract: A cab stopper device 32 is provided between a bracket 23 on a machine frame of a work machine and a cab 25. The cab stopper device 32 restricts relative movement of the cab 25 with respect to the machine frame in the vertical direction. Two through holes 43, 44 are formed in a floor plate 27 of the cab 25. A stopper 48 of the cab stopper device 32 is inserted in the through holes 43, 44 from above. An engaging portion 48a is formed at the lower end of the stopper 48 that projects from the through holes 43, 44 downward of the floor plate 27. The engaging portion 48a is arranged to be engageable with a restricting groove 42 formed in the bracket 23. In this state, a securing portion 48b at the upper end of the stopper 48 is secured to the floor plate 27.
    Type: Application
    Filed: April 13, 2009
    Publication date: December 23, 2010
    Applicant: KOMATSU LTD.
    Inventor: Shuuji Miyasaka
  • Publication number: 20100212450
    Abstract: A ripper operating device is configured to perform operations of a ripper of a work vehicle. The ripper operating device includes a support portion, an operating lever, and an operating switch part. The operating lever is supported by the support portion to be movable with respect to the support portion in a first direction to perform a first operation and non-movable in a second direction. The first direction intersects a front-and-rear direction at an intersection point corresponding to a neutral position of the operating lever to form an acute angle with the front-and-rear direction on a rearward-outward side of the intersection point. The second direction is substantially perpendicular to the first direction and substantially matches with a direction in which a forearm of an operator extends when operating the ripper. The operating switch part is arranged on the operating lever to perform a second operation other than the first operation.
    Type: Application
    Filed: December 3, 2008
    Publication date: August 26, 2010
    Applicant: KOMATSU LTD.
    Inventors: Shuuji Miyasaka, Shigeru Yamamoto, Kazuyuki Suzuki