Electric sauna heater
CA 1301226 C · Owner: Oy Helo-Tehtaat - Helo Factories Ltd. · Inventors: Kivimaa, Antti; Perala, Reijo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to an electric sauna heater comprising an outer casing surrounding a stone space containing heat-storing material, and at least one electric resistor provided in the stone space for heating the heat-storing material. In the invention in order to provide an electric sauna heater in which the required preheating time, the energy consumption and the steam generating properties are advantageous the outer casing is thermally insulated and surrounds the stone space substantially tightly at least on the sides and at the top. Electric power supply to the electric resistor(s) is effected in dependance of the temperature in the stone space so that by forming air flow connection …
Read the whole patent
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 May 19, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 19, 2009.
- 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.