Patents by Inventor Yuuji Sakakibara

Yuuji Sakakibara 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).

  • Patent number: 5649608
    Abstract: A load transport lifter having the following characteristics: a lift platform with a moveable base frame connected to a cylinder mechanism and struts; upper sprockets are attached to the end of the piston rod of the cylinder mechanism and lower sprockets are attached to a lift mechanism disposed along the struts; a cable or chain, one end of which is fixed to the lift platform, is wound around the upper and lower sprockets and is fixed at the other end to the top of the struts; further, coil springs are attached to the lift mechanism and adapted to push it downward; finally, a locking mechanism is adapted to lock the lift mechanism in a set position.
    Type: Grant
    Filed: December 9, 1994
    Date of Patent: July 22, 1997
    Assignee: Bishamon Industries Corporation
    Inventor: Yuuji Sakakibara
  • Patent number: 5632209
    Abstract: A lift table that consists of a base and a table attached on the right and left by pairs of scissor links. The table is raised through the use of a compression spring. The spring is compressed through the weight of the load on the table, thus creating a lift table which maintains a set height for the load on the table. The spring is positioned with one end attached to either the top or bottom end of one of the pair which form the scissor-link mechanisms, and with the other end connected to the other link, which intersects the first. One end of the spring is attached to a screw slider mechanism which is adapted to move along the length of the second link.
    Type: Grant
    Filed: September 1, 1994
    Date of Patent: May 27, 1997
    Assignee: Bishamon Industries Corporation
    Inventor: Yuuji Sakakibara