Film carriage ring for horizontal stretch film wrapping or packaging machines, and a method of making the same
CA 2290280 A1 · Owner: Turfan, Faruk M. · Inventors: Forrest, Stephen G.; Turfan, Faruk M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composite ring member comprises an annular ring member and an annular reinforcing ring member welded to the external peripheral portion of the annular ring member. The annular ring member comprises a tubular stock member having a, substantially rectangular or square-shaped cross-sectional configuration, which is bent into the form of the annular ring member and the free end portions thereof are welded together. In this manner excessive waste of material in forming conventional ring members, wherein such conventional ring members are cut out from square plates, is eliminated. Segmentally-configured gusset plate members are welded to diametrically opposite internal peripheral portions of …
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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 22, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 22, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 22, 2021.
- 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.