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Expired Canadian patentCanada

Apparatus for minimizing foam in filling containers

CA 1315751 C · Owner: Corniea, Donald G. · Inventors: Corniea, Donald G.; Kelash, Dale J.

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

Apparatus for dispensing a predetermined quantity of product liquid into a series of cartons in sequence is described. The apparatus includes a discharge valve arrangement that direct the liquid obliquely against the wall of the carton to reduce the tendency to produce foam. Also, the apparatus includes a bellows and valve system for controlling the flow of liquid to the discharge valve. A method of operating the system that is described minimizes the liquid pressure differential at the discharge valve when the valve opens.

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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 19, 1989
GrantedApril 6, 1993
Term endedApril 6, 2010
Patent numberCA 1315751 C
Classification (IPC)B65B39/02

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedMay 19, 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.