Self-regulating heater having a heat tape that stops tracking
CA 1307019 C · Owner: Fluorocarbon Company (The) · Inventors: Anderson, James H.; Farkas, Richard W.; Rock, David A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A phenomenon sometimes referred to as tracking can occur when the end of an electrical heater made of two or, more metal conductors and a conductive polymer web comes, into contact with water or other electrolytes which allow arcing to take place across the surface of the web. Tracking is stopped by holes in the web which prevent arcing from continuing up the length of the heat tape.
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 September 1, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 1, 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.