Patents by Inventor Denys Edward Downton

Denys Edward Downton 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).

  • Dishwashers and detergent dispensers
    Patent number: 4076146
    Abstract: A sensing and dispensing system for dispensing a first liquid to a reservoir, the dispenser comprising a pumping device having an inlet adapted to receive said liquid and an outlet adapted to be placed in communication with the reservoir and a control mechanism controlling operation of the pumping device whereby, in use of the dispenser to effect operation of the pumping device to pump a metered amount of the first liquid into the reservoir. The control circuit may include a sensor for detecting the commencement of delivery of another liquid to the reservoir or a detector for monitoring the conductivity of the liquid in the reservoir.
    Type: Grant
    Filed: March 3, 1976
    Date of Patent: February 28, 1978
    Assignee: Gibson Chemicals International Pty. Limited
    Inventors: Johannes Willebrordes Lausberg, Denys Edward Downton