Patents by Inventor David Hung Chi Chen

David Hung Chi 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).

  • Dishwasher having rotating zone wash sprayer
    Patent number: 7523758
    Abstract: A dishwasher has multiple wash zones which are each supplied by a wash liquid supply. An interior tub configured to provide an interior wash chamber for washing dishes is divisible into a plurality of wash zones supplied by separate wash liquid supplies. One of the wash zones is supplied by a spray manifold having rotating spray heads. The spray heads are provided with internal vanes which urge the spray heads to rotate and direct wash liquid to outlets in the spray heads.
    Type: Grant
    Filed: December 30, 2004
    Date of Patent: April 28, 2009
    Assignee: Whirlpool Corporation
    Inventors: Chad T. Vanderroest, Jay Landsiedel, Antony M. Rappette, David Hung Chi Chen