Patents by Inventor Yoshizumi Zenno

Yoshizumi Zenno 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).

  • Heavy duty crane
    Patent number: 4614275
    Abstract: A heavy duty crane which essentially includes in combination: a first mobile and swivellable base unit, a boom mounted on the first base unit, a second mobile and swivellable base unit, a counterweight mounted on the second base unit, a link frame interconnecting the two base units, and a gantry structure supported on and across the two base units, wherein the link frame includes a front frame having a fore end thereof connected to the first base unit and a rear frame having a rear end thereof detachably connected to the second base unit, the rear end of the front frame being detachably connectible to the fore end of the rear frame and to the second base unit.
    Type: Grant
    Filed: May 2, 1984
    Date of Patent: September 30, 1986
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventor: Yoshizumi Zenno