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:
Mar. 18, 1986
Filed:
Dec. 27, 1983
Helmut Bayer, Vienna, AT;
Electrovac Gesellschaft m.b.H., Vienna, AT;
Abstract
A temperature regulating device is provided for electrical cooking appliances wherein the heat is provided by heating bodies, or elements, for plural heating zones. The device has a heat resistant bar or rod of high thermal expansion. The rod is enclosed within a tubular jacket formed of two tubes set end-to-end along the rod. The rod is spring mounted for moving an electrical contact of a switch to open and close the switch. The tubes have different coefficients of thermal expansion, the coefficient of the tube nearest the switch being the same as that of the rod, for providing a uniform switching characteristic over a wide range of operation of the heating elements.