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Expired Canadian patentCanada

Structure for forming a refractory joint of predetermined thickness between a refractory nozzle and a refractory plate

CA 1256285 A · Owner: Metacon Ag · Inventors: Vetterli, Walter; Bierbaum, Eduard

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

A discharge structure includes a refractory plate a, mounting frame supporting the refractory plate an exchangeable, refractory nozzle, a mounting sleeve surrounding and supporting the nozzle, a lock between the sleeve and frame for locking the sleeve and the nozzle to the frame in a position with an inner end face of the nozzle urged toward a confronting surface of the refractory plate, and a refractory joint forming a seal between the end face and surface. An abutment extends from the frame and abuts an inner end of the nozzle thus forming an, axial support for the nozzle upon the lock urging the nozzle toward the plate, thus ensuring spacing between the end face and the surface by a …

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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 June 27, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 27, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 21, 1985
GrantedJune 27, 1989
Term endedJune 27, 2006
Patent numberCA 1256285 A
Classification (IPC)B22D41/08 +2 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedJune 21, 1985Patent grantedJune 27, 1989Term endedJune 27, 2006

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