Patents by Inventor Frederick Liebold

Frederick Liebold 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).

  • Electric cooking assembly with hot-warning indicator
    Patent number: 7268324
    Abstract: An electric cooking assembly includes a cooking surface having supported under the surface an electric heater incorporating an electric heating element and a temperature limiter including a thermally responsive assembly incorporating only a single switch, the switch being adapted to open at a predetermined sensed temperature. A control is provided, adapted to energise the electric heater from a power supply through the switch of the temperature limiter. A modular electronic monitoring device is provided, separate from the control, adapted to monitor energising of the electric heater and to activate a signal device when the cooking surface is too hot to touch.
    Type: Grant
    Filed: June 29, 2005
    Date of Patent: September 11, 2007
    Assignee: Ceramaspeed Limited
    Inventors: Frederick Liebold, Kim Lezatte
  • Electric cooking assembly
    Publication number: 20070000909
    Abstract: An electric cooking assembly includes a cooking surface having supported under the surface an electric heater incorporating an electric heating element and a temperature limiter including a thermally responsive assembly incorporating only a single switch, the switch being adapted to open at a predetermined sensed temperature. A control is provided, adapted to energise the electric heater from a power supply through the switch of the temperature limiter. A modular electronic monitoring device is provided, separate from the control, adapted to monitor energising of the electric heater and to activate a signal device when the cooking surface is too hot to touch.
    Type: Application
    Filed: June 29, 2005
    Publication date: January 4, 2007
    Inventors: Frederick Liebold, Kim Lezatte