Roller
CA 2227790 C · Owner: Eduard Kusters Maschinenfabrik Gmbh & Co. Kg · Inventors: Kusters, Karl-Heinz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A roller assembly has a rotating hollow roller which surrounds with clearance a longitudinally extending non-rotatable crosshead. The hollow roller is carried on supporting elements on the crosshead acting on the inner circumference of the roller. Each supporting element defines a hydrostatic bearing pocket which is supplied with hydraulic fluid that flows over the edge of the bearing pocket to form a supporting film between the bearing head and the roller. The dimension of the bearing pocket longitudinally of the roller is at least twice the dimension in the circumferential direction, and further stabilizing bearing pockets are arranged one at each of the four corners of the rectangular …
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 July 9, 1996 and granted June 18, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 9, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 9, 2018.
- 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.