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Expired Canadian patentCanada

Jaw gripping and inverting sheet destacker and transfer device

CA 1110285 A · Owner: Keyes Fibre Company (Delaware) · Inventors: Lowery, Louie R.

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 a transfer carrier for gripping a molded fiber packing sheet having a raised rib structure, a set of jaws shaped to engage the rib structure the, jaws having gripping teeth that dig into the molded fiber of the rib structure when that structure is engaged by the jaws opening, structure connected to open the jaws when a gripped sheet is to be released, the jaws carrying release assisting projections extending in the general direction in which the jaws open to, engage adjacent portions of the sheet when the jaws open and assure a positioning of the sheet that causes all the teeth to be pulled out of the molded fiber when the jaws are opened.

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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 October 6, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 6, 1998.
  • 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 18, 1980
GrantedOctober 6, 1981
Term endedOctober 6, 1998
Patent numberCA 1110285 A
Classification (IPC)B65G59/02

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Application filedApril 18, 1980Patent grantedOct 6, 1981Term endedOct 6, 1998

Sources & verification

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