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Expired Canadian patentCanada

Continuous damping means for off-set printing machines

CA 1294489 C · Owner: 0 0000000 Terzuolo, Giancarlo · Inventors: 0 0000000 Terzuolo, Giancarlo

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 excess of damping liquid taken from the vessel 3 by the fountain roller 4 which rotates in the direction indicated by the arrow 6 is removed by the wiper element 9 formed of a body made of elastic material of circular cross section housed in a longitudinal groove in the rigid support bar 11. The fountain roller is rotated by the dc motor 5, the speed of which is adjusted by pulses coming from the processor 23 under the influence of the signal transmitted to the processor by the speed detector 23 which is located on the shaft of the plate roller 1. The speed can also be influenced by other signals transmitted to the processor, for instance from the keyboard 30 where it is possible 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 January 21, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 21, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 16, 1988
GrantedJanuary 21, 1992
Term endedJanuary 21, 2009
Patent numberCA 1294489 C
Classification (IPC)B41F7/26 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedAug 16, 1988Patent grantedJan 21, 1992Term endedJan 21, 2009

Sources & verification

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