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Expired Canadian patentCanada

Coupling device for tubular members

CA 1292256 C · Owner: Sauer, Heinz · Inventors: Heise, Wilfried; Sauer, Heinz

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 coupling device between a hose and the radiator of a motor vehicle has a nipple on the radiator with a circumferentially complete rib at its front end. The front flank of the rib is conical and the rear flank of the rib extends radially of the nipple and is adjacent a groove with three equidistant axially parallel ramps one of which is in line with a bridge extending forwardly of the conical flank. The end of the hose is attached to a coupling element with three equidistant prongs each having a radially inwardly extending claw at its front end. The claws slide along the conical flank of the rib when the front end of the coupling element is inserted into the front end of the nipple, and …

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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 November 19, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 19, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 26, 1988
GrantedNovember 19, 1991
Term endedNovember 19, 2008
Patent numberCA 1292256 C
Classification (IPC)F16L35/00 +1 more

Timeline

Timeline From CIPO dates

1989199119931995199719992001200320052007Application filedJan 26, 1988Patent grantedNov 19, 1991Term endedNov 19, 2008

Sources & verification

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