Reel-up with central driven reeling drum
CA 2117182 C · Owner: Svanqvist, Tord Olof Sixten · Inventors: Svanqvist, Tord Olof Sixten
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A reel-up (1) having a driven surface winding drum (4); two rails (5) to support the reeling drum (7); secondary carriages (17) movable linearly along the rails (5) and provided with press devices (19) to press against a reeling drum (7) to maintain a predetermined linear pressure in the nip between the surface winding drum (4) and the paper reel (6) as it increases in size; and drive means (50) for central driving of the reeling drum (7) comprising a coupling device (67) for connection to one of the coupling devices (9) of the reeling drum (7). According to the invention the central drive means (50) is mounted to one of the secondary carriages (17) to be moved together with this and …
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 September 14, 1992 and granted July 3, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 14, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 14, 2014.
- 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.