Roller
CA 1084749 A · Owner: Kusters, Eduard · Inventors: Appenzeller, Valentin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A roller for the pressure treatment of a web core. The roller consists of an inner core and an outer hollow roller which surrounds and is spaced from the core. Pressurised liquid is situated in the area between the core and the roller on the side of the working nip. In the area between the core and the roller on the side away from the working nip there is a longitudinally extending strip attached to the core and contacting the inner surface of the roller which is adapted to deflect pressurised liquid entrained by the inner surface of the roller into drainage channels in the core.
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 September 2, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 2, 1997.
- 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.