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Expired Canadian patentCanada

Reinforced formed hose

CA 1047420 A · Owner: Automation Industries · Inventors: Kutnyak, Thomas A.; Dunn, George T.; Guiles, Chester L.

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 preformed radiator hose and a method of manufacturing such a hose are disclosed herein. A long lenth of an uncured hose is first fabricated by alternately wrapping layers of an uncured elastomer and fiber reinforcements around a straight mandrel. The uncured hose is then removed from the straight mandrel and cut into shorter segments. Each of these segments is then placed on a contoured mandrel having a shape corresponding to the intended configuration of the final hose and cured by heating. Although the fully cured hose does have a permanent shape, because of the unique arrangement of the reinforcements etc. it has sufficient deformability to be easily slipped off the mandrel.

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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 January 30, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 30, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedJanuary 30, 1979
Term endedJanuary 30, 1996
Patent numberCA 1047420 A
Classification (IPC)F16L11/16 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedJan 30, 1979Term endedJan 30, 1996

Sources & verification

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