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Expired Canadian patentCanada

Movable heat chamber insulating structure

CA 1266609 C · Owner: Miller, Thomas M. · Inventors: Miller, Thomas M.

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 insulation structure for a heat chamber e.g. a wall or ceiling for a furnace, is now supported and linked to a frame in a manner providing for ease of repair plus simplicity of maintenance. In one embodiment a series of side-by-side ceramic fiber blankets can be maintained in snug relationship, in part by adjustable compression means. Heat loss, which can otherwise be caused by heat induced ceramic fiber shrinkage, is now substantially reduced to eliminated by the manner of supporting the insulation structure coupled with the compression exerted against such structure.

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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 March 13, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 13, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 16, 1985
GrantedMarch 13, 1990
Term endedMarch 13, 2007
Patent numberCA 1266609 C
Classification (IPC)F16L59/12 +2 more

Timeline

Timeline From CIPO dates

19861989199219951998200120042007Application filedApril 16, 1985Patent grantedMarch 13, 1990Term endedMarch 13, 2007

Sources & verification

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