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Expired Canadian patentCanada

Hold-down clamp assembly for upper swingable inker of perfecting press

CA 1086564 A · Owner: Didde-Glaser, Inc. · Inventors: Welborn, Ronald D.

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

Abstract Of The Disclosure, In an offset printing press the inker is normally clamped down against the printing section so as to transfer ink from the form roll of the inker to the plate cylinder of the printing section, but upon actuation of an air cylinder to extend the rod thereof, a clamping jaw on the outer end of the rod releases its grip on a latch lever and pushes against the frame of the printing section, thereby incrementally raising the inker and effecting slight separation of the form roll and plate cylinder. Such slight separation is not, however, sufficient to disengage drive mechanism associated with the form roll and plate cylinder so that the form roll may continue to …

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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 September 30, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 30, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 18, 1978
GrantedSeptember 30, 1980
Term endedSeptember 30, 1997
Patent numberCA 1086564 A
Classification (IPC)B41L27/38 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedSep 18, 1978Patent grantedSep 30, 1980Term endedSep 30, 1997

Sources & verification

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