Patents by Inventor Yuuji Kitasaka

Yuuji Kitasaka 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: 6889782
    Abstract: A tractor having right and left traveling crawlers (9) installed thereon, comprising a hydraulic transmission swing mechanism (45), a forced-diff (41) for driving a crawler driving sprocket (4), and an engine (10), a hydraulic transmission straight-ahead driving mechanism (25), and a transmission case (12) disposed from the front side to the rear side of a machine body in that order, wherein an allowance for heat radiation is provided to a space under a machine floor for storing the hydraulic transmission straight-ahead driving mechanism (25) to eliminate the problem of the machine floor becoming too high, and the forced-diff (41) is driven by the hydraulic transmission swing mechanism (45) with a simple structure.
    Type: Grant
    Filed: October 12, 2001
    Date of Patent: May 10, 2005
    Assignee: Yanmar Agricultural Equipment Co., Ltd.
    Inventors: Masakazu Komatsu, Yuuji Kitasaka, Susumu Nochi, Yukio Kubota, Susumu Akashima
  • Publication number: 20030173132
    Abstract: A tractor having right and left traveling crawlers (9) installed thereon, comprising a hydraulic transmission swing mechanism (45), a forced-diff (41) for driving a crawler driving sprocket (4), and an engine (10), a hydraulic transmission straight-ahead driving mechanism (25), and a transmission case (12) disposed from the front side to the rear side of a machine body in that order, wherein an allowance for heat radiation is provided to a space under a machine floor for storing the hydraulic transmission straight-ahead driving mechanism (25) to eliminate the problem of the machine floor becoming too high, and the forced-diff (41) is driven by the hydraulic transmission swing mechanism (45) with a simple structure.
    Type: Application
    Filed: April 17, 2003
    Publication date: September 18, 2003
    Inventors: Masakazu Komatsu, Yuuji Kitasaka, Susumu Nochi, Yukio Kubota, Sususmu Akashima