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Expired Canadian patentCanada

Stationary plate

CA 1260259 A · Owner: Uss Engineers And Consultants, Inc. · Inventors: King, Patrick D.

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

Disclosed is a sliding gate valve which may be employed on the side of a furnace as a furnace valve, in which the mechanism is so structured that the shut off occurs by directing the slide gate to the up position rather than the down position. In addition, to facilitate a reduction in space at the slide gate, the slide gate is desirably configured to be asymmetrical with, the short end extending upwardly from the pour opening in the nozzle. refractory lined heat shield protects the sliding gate carrier and also serves to mount a collector extension when used. More specifically the slide gate, is provided with a metallic frame which retains a monolithic refractory into which erosion …

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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 September 26, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 26, 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.
FiledMarch 15, 1984
GrantedSeptember 26, 1989
Term endedSeptember 26, 2006
Patent numberCA 1260259 A
Classification (IPC)F27D3/15 +2 more

Timeline

Timeline From CIPO dates

19851988199119941997200020032006Application filedMarch 15, 1984Patent grantedSep 26, 1989Term endedSep 26, 2006

Sources & verification

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