Method and furnace for heat treating material
CA 1051658 A · Owner: Allis-Chalmers Corporation · Inventors: Heian, Glenn A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Exhaust gas from the cooler is pulled through a mechanical dust collector by a cooler recoup fan and delivered as tempering air to a mixing box in which moisture is added to moisturize and also temper the hot bypass gases. The portion of hot gases coming from the kiln and passing into the preheat or preburn chamber that is drawn into the mi?ing box where such gases were mixed with atmospheric air in Canadian Patent 949,594 (U.S. Patent 3,653,645) are mixed with either cooler exhaust air and tempering water or a combination of cooler exhaust air and tempering water and atmospheric air. Excess cooler exhaust gases not utilized in the mixing box are directed to the windbox of the furnace …
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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 April 3, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 3, 1996.
- 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.