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Expired Canadian patentCanada

Blank conveying apparatus

CA 1280132 C · Owner: Aida Engineering, Ltd. · Inventors: Umezawa, Fumiaki

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

This invention relates to an apparatus suitable for conveying shaped blanks. This apparatus includes a pair of screw shafts extending in a direction of conveying the blank. Members for holding attracters threadably coupled to these screw shafts are movable along guide shafts. Respectively provided at the ends of the guide shafts on one side are connecting members. Screw shafts threadably coupled to these connecting members drives the attracter holding members to approach or separate from each other on a line connecting the two guide shafts. Pinions provided near the opposite ends of the guide shafts rotatably move on racks whereby the attracter holding, members are synchronously moved …

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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 12, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 12, 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.
FiledApril 21, 1987
GrantedFebruary 12, 1991
Term endedFebruary 12, 2008
Patent numberCA 1280132 C
Classification (IPC)B65H5/04 +1 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedApril 21, 1987Patent grantedFeb 12, 1991Term endedFeb 12, 2008

Sources & verification

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