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Expired Canadian patentCanada

Method and apparatus for transversely cutting strips of deformable material

CA 1310897 C · Owner: Firestone Tire & Rubber Company (The) · Inventors: Weyand, Harley Peter, Jr.

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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 apparatus and improved method for transversely cutting strips of deformable material with a rotating cutting blade which is moved generally transversely across the strip at a predetermined rake angle and bevel angle. A vacuum applied to certain chambers of a platen draws the strip firmly against a supporting structure at two locations on opposite sides of a cutting line during the cut cycle. A lubricant is sprayed through nozzles onto the blade as it cuts the strip and blow-off nozzles remove excess lubricant during the cut and return cycles of the blade to prevent contamination of the cut strip edges. A release bar assists in disengaging the strip from the platen after the strip is cut. …

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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 December 1, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 1, 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.
FiledFebruary 23, 1988
GrantedDecember 1, 1992
Term endedDecember 1, 2009
Patent numberCA 1310897 C
Classification (IPC)B29D30/46 +1 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedFeb 23, 1988Patent grantedDec 1, 1992Term endedDec 1, 2009

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