Air knife coater
CA 1230965 A · Owner: Oy Wartsila Ab · Inventors: Westergdrd, Sivert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An air knife coater, in which coating substance is applied onto a running web and is subsequently treated by an air knife device. The application zone is short enough in the longitudinal direction of the web, and it is situated so close to the air knife device, that the web when running at normal coating speed leaves the application zone and reaches the air knife device in a time of at the most 5 milliseconds, preferably at the most 3 milliseconds. The web enters into the application zone and reaches the air knife device in a time of at the most 15 milliseconds preferably, at the most 9 milliseconds.
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
- Granted January 5, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 5, 2005.
- 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.