The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 10, 1994
Filed:
Jan. 05, 1993
Kevin R McWilliams, Stratford-upon-Avon, GB;
Stuart Lamb, Redditch, GB;
Ceramaspeed Limited, , GB;
Abstract
A device for controlling or limiting temperature in an electric cooking appliance includes a switch and a temperature sensor operatively coupled to the switch. The temperature sensor takes the form of a rod arranged substantially coaxially within a tube. The rod is made of a material having a first coefficient of thermal expansion and the tube is made of at least two tube portions, one of the tube portions being made from a material having a second coefficient of thermal expansion lower than the first coefficient of thermal expansion and another of the tube portions being made from a ceramic material having a third coefficient of thermal expansion intermediate the first and second coefficients of thermal expansion. The temperature controlling or limiting device may be incorporated into a radiant electric heater incorporating at least first and second heating elements defining separate heating areas for the cooking appliance.