Roll-forming apparatus for continuous or interleaved webs
CA 2205795 A1 · Owner: Anderson, Danford C. · Inventors: Kessel, Michael G.; Romenesko, Scott C.; Anderson, Danford C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A roll-forming apparatus is disclosed which forms individual rolls of material from continuous or interleaved webs. The apparatus includes a conveyor which directs each web of material to an associated intermittently indexed turret assembly. The turret assembly includes a plurality of rotatable spindles thereon for respective formation of rolls of material from the individual webs. The apparatus includes various drive arrangements so that the surface speed of each spindle is matched to the speed of the apparatus conveyor during transfer of each web to a respective one of the spindles. Separate drive systems are preferably provided for effecting driven rotation of each spindle during winding …
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 May 22, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 22, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 22, 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.