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Expired Canadian patentCanada

Automatic filling apparatus, and bag mouth opening device thereof

CA 1249800 A · Owner: Kureha Chemical Industry Co. Ltd. · Inventors: Sawa, Yuhji; Itoh, Toshio

CIPO record

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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 for automatically filling bags with a material after separating each bag from a continuous chain of bags along perforations where each bag is joined to its neighbor has a guide section for guiding the chain of bags, a separating section for separating the chain of bags into individual bags at the perforations, a mouth opening device for opening a mouth located at one side edge of each bag and a, filling section for blowing air into the bag through its opened mouth and for filling the bag through the opened mouth. The mouth opening device has a pressing assembly supported above the mouth of the bag and a, chuck assembly situated at one side of the mouth. The pressing assembly …

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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 February 7, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 7, 2006.
  • 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 28, 1985
GrantedFebruary 7, 1989
Term endedFebruary 7, 2006
Patent numberCA 1249800 A
Classification (IPC)B65B1/00

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedFeb 28, 1985Patent grantedFeb 7, 1989Term endedFeb 7, 2006

Sources & verification

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