Patents by Inventor Hsien A. Chen

Hsien A. Chen 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: 5617962
    Abstract: A folding collapsible clothes rack including two parallel stands respectively equipped with rollers for movement, two uprights respectively pivoted to the stands and secured in an operative position by tightening up screws and spring plates, two bottom connecting rods pivotably connected together and respectively pivoted to the uprights and then secured in the operative position by tightening up screws and spring plates, a top tube for hanging clothes, two pistons respectively moved in the uprights at the top to hold the top tube and secured at the desired elevation relative to the respective upright by a respective lock, each piston having a top end turned about a respective pivot on a downward coupling plate at one end of the top tube and secured in the operative position by a respective tightening up screw and a respective spring plate.
    Type: Grant
    Filed: July 20, 1995
    Date of Patent: April 8, 1997
    Inventor: Hsien A. Chen