Rotary hearth multi-chamber, multi-purpose furnace system
CA 1291332 C · Owner: Smith, John W. · Inventors: Smith, John W.; Keil, Gary D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A continuous carburizing furnace system is disclosed having at least two series-connected rotary furnaces. The rotary carburizing furnace, a rotary equalizing furnace and a, rotary diffusion furnace which may be included between the carburizing and equalizing furnaces, allow trays of parts to be discharged from any position at any time by suitable rotation of their hearths, thus allowing parts with different cycle times to be run simultaneously in each rotary furnace. Each donut-shaped rotary furnace includes one or more captive chain type pusher mechanisms mounted in vertical fashion within a central area or hole, and the rotary carburizing furnace is multi-zoned and includes wall-mounted …
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 October 29, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 29, 2008.
- 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.