Patents by Inventor Ruey C. Sheen

Ruey C. Sheen 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).

  • Chair structure
    Patent number: 5251615
    Abstract: An improved chair structure includes a frame having a vertical portion and a horizontal portion which is mounted on a body. A plurality of flexible supports are arranged across the vertical frame portion and the horizontal frame portion and a first line of rollers and a second line of rollers are arranged parallel to each other and perpendicular to the flexible supports in the vertical frame portion, while a third line and a fourth line of rollers are similarly arranged in the horizontal frame portion.
    Type: Grant
    Filed: July 16, 1992
    Date of Patent: October 12, 1993
    Assignee: Wei Ri Healthy Chair Co.
    Inventor: Ruey C. Sheen