Means for erecting cartons having collapsible bottoms
CA 2176759 C · Owner: Calvert, Rodney K. · Inventors: Calvert, Rodney K.; Fishback, Alton J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An orbital carton erecting machine has suction cups (16 17) for withdrawing a collapsed carton (c) from a hopper (14). The orbiting cups convey the carton past further suction cups (23 24) mounted on a pivotal arm (18) at a position (P2). The cups (23 24) move outward, relative to position (P2) and also move parallel to the orbital axis to erect the carton.
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 14, 1994 and granted January 18, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 14, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 14, 2016.
- 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.