Reel-up
CA 2274261 C · Owner: Svanqvist, Tord Olof Sixten · Inventors: Svensson, Sture Erling Leon; Onnerlov, Lars-Erik Roland; 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) in which paper is reeled up on reeling drums (4) to form paper reels (3), said reel-up comprising two stand members (6 7) each having a , stand rail (12) to support the reeling drums; a surface winding means (8) over which the web (2) runs; and a secondary system with at least one secondary unit (19, 20) for receipt of a reeling drum wherein the secondary unit , comprises first and second secondary bodies (21 22) which are linearly , movably journalled in said stand members. According to the invention each secondary body comprises lifting means for lifting the reeling drum from the stand rail to a production level in which the reeling drum is free from the stand rails …
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 November 26, 1997 and granted September 16, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 26, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 26, 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.