Patents by Inventor Joseph W. Egan

Joseph W. Egan 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).

  • Integrated, usage-dependent temperature control for gas water heaters
    Patent number: 4700886
    Abstract: The control utilizes sensed gas pressure downstream of the thermostat controlled valve as an indication of heat demand. A low limit transducer is placed at 50 to 90 percent of the tank height to maintain adequate heated water for casual uses without excessive burner cycling. A flow transducer is integrated with a heat trap. The control uses output of the flow transducer (combined with the timing out of an interval timer) to enable an excursion from the low limit set point to the thermostat high limit.
    Type: Grant
    Filed: May 29, 1986
    Date of Patent: October 20, 1987
    Assignee: Leslie C. Hill
    Inventors: James B. McGhee, Joseph W. Egan, Leslie C. Hill