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Expired Canadian patentCanada

Electric furnace arrangement

CA 1318340 C · Owner: Zajicek, Ernst · Inventors: Hammerschmid, Hubert; Riegler, Ernst; Zajicek, Ernst

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

An electric furnace includes a furnace vessel covered by a furnace lid liftable and lowerable by a lid lifting mechanism and pivotable from a position above the furnace vessel into a position lateral of the furnace vessel and back by a lid pivoting mechanism. A lid supporting framework is pivotably mounted lateral of the furnace vessel and includes at least one lid bracket extending over the furnace vessel for lifting, lowering and pivoting the furnace lid. In order to be able to pivot the lid bracket without furnace lid and without necessitating manipulations to be carried out at the furnace lid for the purpose of exchanging the lid or the lid core, the lid bracket is detachably connected …

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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 May 25, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 25, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 9, 1988
GrantedMay 25, 1993
Term endedMay 25, 2010
Patent numberCA 1318340 C
Classification (IPC)F27B3/16 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedMay 9, 1988Patent grantedMay 25, 1993Term endedMay 25, 2010

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.