Patents by Inventor Masahide Tsujino

Masahide Tsujino 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).

  • Structure for attaching tines for cultivation by reversible rotation in rotary cultivating apparatus
    Patent number: 4556113
    Abstract: Cultivating tines, each having opposite cutting edges, are pivotably supported by tine mount members on a tine shaft reversibly rotatable about a horizontal lateral axis. One of the cutting edges of the tine is retainable in a position rearward with respect to the direction of forward rotation, while the other cutting edge is retainable in a position rearward with respect to the direction of reverse rotation. When held in each of these positions, the tine is restrained by resistant force imparting means from being pivotally moved by a centrifugal force. The resistant force to be imparted by this means is smaller than the reaction to be produced when the tine is driven into the soil.
    Type: Grant
    Filed: November 2, 1983
    Date of Patent: December 3, 1985
    Assignee: Kubota Ltd.
    Inventors: Taro Saito, Kazumi Umeki, Takaaki Ohno, Hirobumi Sakane, Masahide Tsujino, Keiichi Sanpei, Yoshibumi Nagamine, Yoshitaka Sato