Patents by Inventor Kunisuke Nakamura

Kunisuke Nakamura 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).

  • Automatic differential locking system for a working vehicle
    Patent number: 4671376
    Abstract: An automatic differential locking system for a working vehicle having steerable front and rear wheels, which includes a selector for selecting a steering mode of the vehicle, an actuator for operating a differential locking mechanism, and a gate for sending a control signal to the actuator in response to a signal received from the selector. The gate is adapted to send a differential locking signal to the actuator upon receipt of a parallel steering mode signal from the selector. In response to the differential locking signal the actuator actuates the differential locking mechanism. Since differential revolutions of the wheels are limited at times of parallel steering, the vehicle is capable of accurate course revisions and alterations without slipping.
    Type: Grant
    Filed: September 13, 1985
    Date of Patent: June 9, 1987
    Assignee: Kubota, Ltd.
    Inventors: Katsumi Ito, Shigeaki Okuyama, Norimi Nakamura, Yoshizo Kuroiwa, Kouji Fujiwara, Kunisuke Nakamura, Osami Fujiwara, Jituo Yoshida, Mitsugu Kobayashi
  • Tractor
    Patent number: D297433
    Type: Grant
    Filed: September 4, 1985
    Date of Patent: August 30, 1988
    Assignee: Kubota, Limited
    Inventors: Shigeaki Okuyama, Norimi Nakamura, Osami Fujiwara, Kunisuke Nakamura, Genichi Funabashi