Chambered doctor blade inker system
CA 2005454 C · Owner: Man Roland Druckmaschinen Ag · Inventors: John, Thomas; Hamm, Anton
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The chambered doctor blade unit is intended to ink an anilox roller (10) with ink having a viscosity of at least 1 d Pa s and preferably greater than 40 d Pa s. Each of the side walls (3) when the inker is in operative position with respect to the anilox roller (10) form circumferential gaps (13) with respect to the anilox roller, having a width (A) of between about 0.1 to 3 mm thereby preventing wear and tear on the side walls and sealing of the receptors or cells of the anilox roller with a braided material. The doctor blades (4, 5) are resiliently pressed against upper (20) and lower edges of the side walls to prevent formation, of undulation, the side walls being formed with recessed …
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 December 13, 1989 and granted April 13, 1993. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 13, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 13, 2011.
- 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.