Patents by Inventor Keiji Andoh

Keiji Andoh 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: 5064331
    Abstract: A vertical conveying apparatus for vertically conveying an article between at least two horizontal surfaces having different vertical positions, includes a plurality of vertical tracks, vertical conveying trucks, horizontal conveying trucks, and coupling units. The vertical tracks couple the horizontal surfaces to each other. The vertical conveying trucks are capable of vertically moving along the vertical tracks. The horizontal conveying trucks are capable of moving on the horizontal surfaces. The coupling units are respectively arranged on the horizontal surfaces, and transfer the article between the vertical and horizontal conveying trucks. Each vertical track serves, throughout the entire length, as a primary side of a linear motor. The primary side is vertically divided into a plurality of sections. The sections are connected to power sources which can be independently controlled in units of sections. The vertical conveying truck serves as a secondary side of the linear motor.
    Type: Grant
    Filed: April 25, 1990
    Date of Patent: November 12, 1991
    Assignee: Fuji Electric Co., Ltd.
    Inventors: Hitoshi Yamaguchi, Keiji Andoh