Arc furnace fumes control system
CA 1069160 A · Owner: Hawley Manufacturing Corporation · Inventors: Overmyer, Robert C.; Nijhawan, Pramodh
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An exhaust system for use with an electric arc melting furnace having a crucible and an upwardly directed mouth covered by a roof, and a device coupled to the roof for projecting it upwardly along an axis and pivotally about the axis to a position out of registry with the mouth for providing access for charging the furnace and a device for, tilting the furnace for tapping. The main fumes exhaust duct is coaxial with the tilt axis of the furnace at the point where the furnace exhaust system is coupled to the main fumes exhaust duct. The furnace exhaust system is coupled to the main duct by a swivel which allows the furnace system to remain coupled to the main duct during tapping. 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 January 1, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 1, 1997.
- 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.