Patents by Inventor Kobayashi Nobuyuki

Kobayashi Nobuyuki 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).

  • Counterweight removal device
    Patent number: 5141195
    Abstract: A counterweight handling device for construction equipment such as cranes in which a counterweight can be elevated to a predetermined height by using particulate hydraulic components then supported on a mounting frame. The counterweight may be supported by a pair of rectangular rotating blocks mounted on the counterweight mounting frame and which slide through a pair of vertical grooves in vertical position into supporting hollows in the counterweight bottom and turn through 90.degree. so as to support the counterweight by blocking the vertical grooves. Alternatively a pair of sliding pins mounted on the counterweight mounting frame may be extended into inverted V shaped notches on the counterweight bottom so as to support the counter weight. The counterweight can then be fastened on the counterweight mounting frame. Later the counterweight can be removed.
    Type: Grant
    Filed: June 11, 1990
    Date of Patent: August 25, 1992
    Assignee: Shin Caterpillar Mitsubishi Ltd.
    Inventors: Tadashi Toda, Jun-ichi Shimizu, Kobayashi Nobuyuki, Hideyuki Izumi, Tsuruo Hamamoto, Norio Nakajima, Shigeru Kojima