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Expired Canadian patentCanada

Consolidated backshoe die for a tube bender machine

CA 1294197 C · Owner: Grimaldo, Samuel · Inventors: Grimaldo, Samuel

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

An improved consolidated backshoe die is provided for use in a tube bender machine used for bending metal tubing of the type used, for example in, vehicle exhaust systems and the like. The machine includes a bending die having a convexly curved die face for bending engagement with a metal tube supported by a pair of the consolidated backshoe dies mounted on an outwardly pivoting pair of back gates. The bending die is advanced along a line extending between the back gates to engage and bend the metal tube with the back, gates swinging outwardly in opposite directions as the tube is bent. The consolidated backshoe dies are each constructed from a plurality of interlocking backshoe members …

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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 14, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 14, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 1, 1988
GrantedJanuary 14, 1992
Term endedJanuary 14, 2009
Patent numberCA 1294197 C
Classification (IPC)B21D9/05 +1 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedNov 1, 1988Patent grantedJan 14, 1992Term endedJan 14, 2009

Sources & verification

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