Roll wrapping machine with roll orienter and method
CA 2180706 C · Owner: Elsner Engineering Works, Inc. · Inventors: Schreiber, John J. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A roll wrapping machine includes a roll infeed conveyor; a roll wrapping station having a film curtain sealing bars and a pusher for pushing the roll into the curtain and past the bars; and a roll orienter on the infeed conveyor. The orienter receives each roll fed down the conveyor spins the roll and releases the roll with the roll tail in a known circumferential location so that the tail of the roll is in the six o'clock position when the roll is received at the wrapping station and is not caught between the plastic curtain film during sealing.
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 July 8, 1996 and granted October 23, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 8, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 8, 2018.
- 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.