Device for swinging a roll for a moving web
CA 2228623 C · Owner: Erhardt + Leimer Gmbh · Inventors: Wulf, Johannes; Niemann, Heinrich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device (5) for swinging a roll (4) for a moving web (15) consists of a shaft (6) extending through the roll (4) with provision made for gearings (7, 8) on the ends of said shaft. A servo-drive (10) engages the gearing (7) putting the, shaft (6) into rotation and displacing its end (9). Gearing (8) on the counter end (12) of the roll (4) translates the rotary motion of the shaft (6) into a motion of thrust of the counter end (12) in the opposite sense so that shaft (6) is, swiveled by the single servo-drive (10) around its central point (13). Roll (4) is rotatably supported on shaft (6) and is jointly swiveled with the latter (FIG. 1).
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 18, 1997 and granted June 13, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 18, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 18, 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.