Patents by Inventor Toyokazu Nakayama

Toyokazu Nakayama 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).

  • Bottom cultivating machine and field cultivating machine for forming soil layer having uniform field
    Patent number: 6089327
    Abstract: A bottom cultivating machine including a laser emitter for emitting a plane signal of a laser beam, a laser detector which is secured to a frame and detects the plane signal to output an attitude control signal, a horizontal detector having a horizontal sensor which is secured to the frame and serves to detect the level of the front end portion of the bottom cultivating machine in a cultivation progress direction, and a controller for controlling the height of the bottom cultivating machine on the basis of the attitude control signal and controlling the attitude of the bottom cultivating machine on the basis of a signal output from the horizontal sensor by upwardly or downwardly moving a gage wheel or a heel which is provided at the rear portion of the bottom cultivating machine.
    Type: Grant
    Filed: December 5, 1996
    Date of Patent: July 18, 2000
    Assignee: Sugano Farm Machinery Mfg. Co., Ltd.
    Inventors: Shigetoshi Kimura, Tsuyoshi Shimomura, Toyokazu Nakayama