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Expired Canadian patentCanada

Method and apparatus for dispensing liquids

CA 1315750 C · Owner: Drevfors, Gunnar · Inventors: Corniea, Donald G.; Paulson, Norman J.; Drevfors, Gunnar

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

A machine for dispensing liquids especially, for filling cartons at a higher rate of speed is, disclosed. The machine includes three bellows arranged in vertical alignment, with upper and lower sleeves interposed between the bellows. The discharge nozzle is located below the lowest bellows. The upper sleeve moves axially relative to the nozzle to control the opening and closing of the discharge valve. The lower sleeve also moves axially to control the filling and recharging of the bellows directly above the discharge nozzle. The method of operating the components in timed relation to achieve effective and efficient carton filling, as well as draining and cleaning is, disclosed.

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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 April 6, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 6, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 29, 1989
GrantedApril 6, 1993
Term endedApril 6, 2010
Patent numberCA 1315750 C
Classification (IPC)B65B39/02 +2 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedMay 29, 1989Patent grantedApril 6, 1993Term endedApril 6, 2010

Sources & verification

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