Isolated ink feed mechanism
CA 2049154 C · Owner: Heidelberger Druckmaschinen Aktiengesellschaft · Inventors: Guaraldi, Glenn Alan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An offset printing apparatus rotates the plate cylinder steadily with a minimum of torsional interference caused by impact of the reciprocating ductor roll with the vibrator roll. The vibrator roll is driven to rotate independently of rotation of the other rolls which lead successively to the plate cylinder.
Read the whole patent
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
- Filed August 14, 1991 and granted July 26, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 14, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 14, 2013.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.