Induction heating system with a flexible coil
CA 2268698 C · Owner: Baxter, Randall · Inventors: Baxter, Randall; Wiseman, Don; Ulrich, Mark
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for induction heating includes a power supply and a controller, and an induction head. The induction head includes a flexible coiled such as one formed with Litz wire. The head also includes a thermal insulator for disposing between the head and the workpiece. The insulator reflects heat back to the workpiece protecting the coil, but is transparent to inductive (E-M) energy. The power supply is a variable output frequency power supply such as one having a resonant tank, to adapt to the inductance of the head.
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 April 8, 1999 and granted June 11, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 8, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 8, 2021.
- 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.