Dual voltage infinite temperature control for an electric cooking appliance
CA 2539311 C · Owner: Maytag Corporation · Inventors: Sterling, Margaret M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cooking appliance includes a cooktop having a heating zone including an associated heating element as well as a control element for setting a desired cooking temperature for the heating zone. When the control element is rotated from a home position across a temperature adjustment zone in a first direction the heating element is operated at a low voltage setting and when the control element is rotated from the home position in a second direction the heating element is operated at a second higher voltage setting. The control element includes a rotary shaft coupled to a voltage selector and an infinite control switch. With this arrangement a consumer can cook delicate food items at …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed March 10, 2006 and granted January 10, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 10, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.