Patents by Inventor Naotaka Kanai

Naotaka Kanai 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).

  • Change-speed construction for propelling system of work vehicle
    Patent number: 5033594
    Abstract: A change-speed construction for a propelling system of a work vehicle. The construction has a neutral return mechanism for causing a stepless transmission to return to the neutral in response to disengagement of a main propelling transmission clutch. Then, when the clutch is engaged again to resume vehicle run after a temporary stop for e.g. replenishment of materials to be worked, the vehicle does not make a sudden start.
    Type: Grant
    Filed: April 30, 1990
    Date of Patent: July 23, 1991
    Assignee: Kubota Corporation
    Inventors: Arinobu Ishida, Toshihiko Kusano, Naotaka Kanai, Toshiyuki Matsumoto, Shinichi Takeda, Hiroshi Nishikawa, Tokio Horikawa
  • Walking operator type cultivator with automatic control stopper
    Patent number: 4719974
    Abstract: A walking operator type cultivator comprising a rotary plow, a ground engaging member for setting a plowing depth, and a position adjusting mechanism for raising and lowering the ground engaging member. The position adjusting member is automatically controllable according to signals transmitted by an inclination sensor detecting fore and aft inclinations of the cultivator. The cultivator further comprises a mechanism for stopping the automatic control of the position adjusting mechanism which is necessary under certain operating conditions of the vehicle. As a trigger for this control stopper mechanism a plowing clutch, a propelling system clutch or the inclination sensor is used.
    Type: Grant
    Filed: October 23, 1985
    Date of Patent: January 19, 1988
    Assignee: Kubota, Ltd.
    Inventors: Naotaka Kanai, Nobuhide Yanagawa