Patents by Inventor Isobel Pearce

Isobel Pearce 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 detecting abnormal temperature rise associated with a cooking arrangement
    Patent number: 7105781
    Abstract: Apparatus and a method are provided for detecting an abnormal rise in temperature associated with a combination of a cooking utensil (10) and a cooking zone (8) of a cooking surface (4) overlying an electric heater (6). The apparatus has a first temperature-responsive device (24) is provided within the heater and adapted to monitor temperature of the cooking surface (4). A second temperature-responsive device (26) is provided within the heater and adapted to monitor temperature of the cooking utensil (10) through the cooking surface (4) to provide an electrical output as a function of temperature of the cooking utensil. Means (28) is provided for calculating first and second derivatives (D1, D2) with time of the temperature sensed by the second temperature-responsive device (26) over an operating temperature range of the heater. Means (28) is provided to determine stabilization of the first derivative (D1) within stabilizing threshold limit values.
    Type: Grant
    Filed: June 14, 2004
    Date of Patent: September 12, 2006
    Assignee: Ceramaspeed Limited
    Inventors: Peter Ravenscroft Wilkins, Neil Swann, Frederick James Davis, Isobel Pearce
  • Apparatus and method for detecting abnormal temperature rise associated with a cooking arrangement
    Publication number: 20050016990
    Abstract: Apparatus and a method are provided for detecting an abnormal rise in temperature associated with a combination of a cooking utensil (10) and a cooking zone (8) of a cooking surface (4) overlying an electric heater (6). The apparatus has a first temperature-responsive device (24) is provided within the heater and adapted to monitor temperature of the cooking surface (4). A second temperature-responsive device (26) is provided within the heater and adapted to monitor temperature of the cooking utensil (10) through the cooking surface (4) to provide an electrical output as a function of temperature of the cooking utensil. Means (28) is provided for calculating first and second derivatives (D1, D2) with time of the temperature sensed by the second temperature-responsive device (26) over an operating temperature range of the heater. Means (28) is provided to determine stabilisation of the first derivative (D1) within stabilising threshold limit values.
    Type: Application
    Filed: June 14, 2004
    Publication date: January 27, 2005
    Inventors: Peter Wilkins, Neil Swann, Frederick Davis, Isobel Pearce