Thermostatically controlled electric hotplate assembly with temperature-responsive vertically movable hotplate and coupled thermostat
CA 1081754 A · Owner: A/S Ardal Og Sunndal Verk · Inventors: Eide, Svein
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention comprises a thermostatically controlled electric hotplate assembly comprising a heating plate; electric heating means for heating the plate; bridge means formed of a flexible sheet material connecting the heating plate with the unheated zone; and actuating means for actuating the energization and de-energization of the heating means. The bridge means acts to transform horizontal expansion and contraction of the heating plate respectively into upward and downward vertical movement thereof with respect to the unheated zone and the heating plate is mechanically coupled with the actuating means for respectively de-energizing and energizing the heating plate in response to such …
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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
- Granted July 15, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 15, 1997.
- 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.