Delumper
CA 2090665 A1 · Owner: Dongieux, Paul A. Jr. · Inventors: Dongieux, Paul A. Jr.; Anderson, Steven J.; Yoder, Ricky L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device and a process for delumping pasty masses in waste materials from paper manufacture. The delumping means employs at least one rotating cylindrical drum having a plurality of flexible fingers mounted on the drum. Pasty masses are supplied to the delumper preferably by a chute mounted to the top of the delumper and are struck by the flexible fingers of the rotating drum. Annular recesses are formed at the base of the flexible fingers which mates with a plurality of bores in the drum housings. Preferably the fingers are rubber.
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 March 1, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 1, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 1, 2015.
- 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.