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Expired Canadian patentCanada

Door with guide insulation and weatherstripping

CA 1190468 A · Owner: Harsco Corporation · Inventors: Downey, Robert C. Jr.

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 and weatherstripping arrangement and associated method for a rolling door includes an insulation supporting member to support a block of expanded polystyrene or similar insulation inside a vertically extending cavity disposed between a guide track and a wall. Most advantageously metallic parts disposed on the inside, of the door are thermally isolated from metallic parts disposed on the outside of the door. Additionally inner, and outer weatherstrips are used for further minimizing heat loss.

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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 July 16, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 16, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 20, 1982
GrantedJuly 16, 1985
Term endedJuly 16, 2002
Patent numberCA 1190468 A
Classification (IPC)E06B9/00 +2 more

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedSep 20, 1982Patent grantedJuly 16, 1985Term endedJuly 16, 2002

Sources & verification

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