Method and apparatus for isothermal holding of wire when a wire is heat-treated in-line
CA 1311279 C · Owner: Sato, Hiroki · Inventors: Sato, Hiroki; Seto, Yoshiki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is a process to hold a wire at a specified temperature for a specified period of time by a direct-resistance heating means to apply such voltage as to generate Joule's heat to offset the quantity of heat release from the heated wire at unforced cooling after the travelling wire is heated rapidly to a specified temperature throughout its cross-section. A temperature-holding apparatus subsequent to heating of wire may be either an arrangement to supply power directly to a wire through feeding wheel electrodes or an arrangement having the combination of a transformer of shell type and a hollow annular holding furnace incorporating guide rollers, and having wheel …
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 December 8, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 8, 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.