Method of regulation in winding
CA 2228262 C · Owner: Vainio, Pertti · Inventors: Leskinen, Arto; Vainio, Pertti
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a method of regulation in winding wherein a number of , separate rolls (13a 13b) are formed around separate roll cores placed one after the other side by side while supported by support members (11 12) and , while loaded by linear loads produced by the truncated rolls (14a 14b) in a , set of truncated press rolls (14). In the method of regulation the distance , at each particular time between at least one truncated roll (14a 14b) in the , set of truncated press rolls (14) and the beam (16) that loads the set of truncated press rolls (14) is measured. The measurement signal (S) is passed to a regulator (23), which gives a regulation signal (d) to the valves that …
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 June 9, 1997 and granted August 7, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 9, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 9, 2019.
- 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.