Patents by Inventor Paul L. Jewell

Paul L. Jewell 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).

  • Apparatus and method for heating water for infusion and the like
    Patent number: 5183998
    Abstract: An automatic electric maker for coffee or the like, having user selectable AUTO, BREW, WARM or OFF modes. The temperature of the WARM mode is selectable by applying partial power to the heating element. Full power can be triggered using a phase controlled triggerable semiconductor. Monitoring devices measure temperature and time to control the operator of the apparatus and to detect malfunction. A temperature comparator is provided to determine if the water conduit should be cleaned and to determine if the BREW state of the machine should be converted to the WARM state, and to place the system in the OFF state if necessary.
    Type: Grant
    Filed: May 30, 1990
    Date of Patent: February 2, 1993
    Assignee: Mr. Coffee Inc.
    Inventors: Ronald J. Hoffman, Lawrence M. Pillion, Paul L. Jewell