Patents by Inventor Hindrik E. H. Eppens

Hindrik E. H. Eppens 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).

  • Method and device for controlling the temperature variation in a potter's oven
    Patent number: 4134005
    Abstract: A potter's oven includes an electrical heating element for controlling the temperature in the oven. Power to this heating element is controlled by a bimetallic switch and an electrically energized heater therefor and the percentage of power supplied to the oven heating element is controlled in dependence upon the value of resistance in series with the heater for the bimetallic switch. The value of this resistance is increased in stepwise fashion under control of at least one sensor which determines the outside wall temperature of the oven, the temperature at which the sensor responds being chosen to cause the temperature inside the oven to reach a predetermined value and to hold such value for a predetermined time.
    Type: Grant
    Filed: January 18, 1977
    Date of Patent: January 9, 1979
    Assignee: Keramisch Instituut Haarlem, B.V.
    Inventor: Hindrik E. H. Eppens