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Expired Canadian patentCanada

Apparatus for filling bags

CA 1284312 C · Owner: Mitsubishi Jukogyo Kabushiki Kaisha · Inventors: Araki, Yozo

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

The present invention provides an apparatus for filling bags with a material and for sealing them comprising: a, pair of chain conveyors disposed in parallel vertical planes; grippers for said bags held on said chain conveyors; a plurality of pairs of bags held on said chain conveyors; a plurality of pairs of seal bars which are disposed facing each other across openings of said bags gripped by said grippers and which moves toward and away from said bags; guide rolls disposed above and parallel with said seal bars; a heat-resistant cloth extended between inside surfaces of said seal bars and upper surfaces of said guide rolls; and a device for sending out said heatresistant cloth.

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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 May 21, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 21, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 14, 1984
GrantedMay 21, 1991
Term endedMay 21, 2008
Patent numberCA 1284312 C
Classification (IPC)B65B43/46 +2 more

Timeline

Timeline From CIPO dates

19851988199119941997200020032006Application filedJune 14, 1984Patent grantedMay 21, 1991Term endedMay 21, 2008

Sources & verification

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