A breathable girth unit for a tube former in a packaging apparatus and method
CA 2234788 A1 · Owner: Nankervis, Wayne T. · Inventors: Nankervis, Wayne T.; Dufek, Gary L.; Pantel, David S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A breathable girth former for a packaging machine for bathroom tissue and kitchen toweling rolls wherein the entrance funnel (preformer) has two halves resiliently mounted to conform to the product dimension most likely to jam in the downstream girth former. The funnel halves movement is transmitted to the girth tube former halves by a mechanical linkage to provide the same spacing as in the funnel.
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 April 15, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 15, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 15, 2020.
- 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.