Tubular heating element
CA 2314459 A1 · Owner: Hotset Heizpatronen U. Zubehor Gmbh · Inventors: Schwarzkopf, Eugen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In order to create a tubular electrical heating element for heating cylindrical parts, which consists of an inside tube (1) of metal, an electrical heating body (2) that is wound onto the inside tube (1) in the form a coil, a tubular outer casing (4) that is of stainless steel, as well as a thermoelectric element that is combined with the heating element and which is arranged within the protective tube (7), and which is simple to produce at the smallest possible dimensions and which permits simple positioning and simple replacement of the thermoelectric element it is proposed that the inside tube (1) incorporate a longitudinal slot (8); and that the protective tube (7) be installed within …
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
- Filed July 25, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 25, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 25, 2022.
- 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.