Patents by Inventor Thomas N. Gumble

Thomas N. Gumble 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: 4441521
    Abstract: An automatic dishwasher includes a water inlet line, a flow control valve assembly, a wash water introducing means for introducing wash water into a container which is adapted to receive dishes, and a control for selectively controlling the flow control valve assembly. The flow control valve assembly includes a first flow control valve which is selectively actuated by a first solenoid coil and a second flow control valve which is selectively actuated by a second solenoid coil. A first ferromagnetic member is disposed between a first end of the solenoid coils and a second ferromagnetic member is disposed between the other end of the solenoid coils. The solenoid coils are so interconnected that when an actuating potential is applied across them, (a) they generate magnetic fields of the opposite polarity, and (b) they are electrically in series.
    Type: Grant
    Filed: May 13, 1981
    Date of Patent: April 10, 1984
    Assignee: Eaton Corporation
    Inventors: Wade R. Brown, Thomas N. Gumble