Sizepress
CA 1194289 A · Owner: Valmet Oy · Inventors: Koski, Erkki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A size press comprises three coating rolls. These rolls are arranged in pairs to form two press nips. The paper web to be treated is passed through the press nips. Both sides of the web are treated in the nips. The uppermost roll is arranged as the centre roll of the size press. In connection with the centre roll the two coating nips are formed so that the first coating nip is placed at a short angular distance underneath the horizontal plane passing through the axis of the centre roll. The second coating nip is formed by the third coating roll which is placed, substantially in the vertical plane passing through the centre point of the centre roll or at a small angle downstream of the said …
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 October 1, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 1, 2002.
- 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.