Patents by Inventor Karen L. Tsuei

Karen L. Tsuei 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).

  • Restricted flow hands-free faucet
    Patent number: 6968860
    Abstract: A faucet comprising a spout, a passageway, an electrically operable valve; a first manual valve; a first manual handle; and a bypass. The passageway conducts water flow through the spout. The electrically operable valve is disposed within the passageway. The first manual valve disposed within the passageway in series with the electrically operable valve. The first manual handle that controls the first manual valve. The bypass has a first end above the electrically operable valve, relative to the water flow, and a second end below the electrically operable valve, such that a portion of the water flow bypasses the electrically operable valve.
    Type: Grant
    Filed: August 5, 2004
    Date of Patent: November 29, 2005
    Assignee: Masco Corporation of Indiana
    Inventors: Hans-Christoph Haenlein, Robert P. Arko, Karen L. Tsuei