Multi pin rotor fiber fluff generator
CA 2095339 A1 · Owner: Weyerhaeuser Company · Inventors: Bowns, Mark W.; Maag, Herrman J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fiber fluff generator includes a housing having three substantially cylindrical portions, each of which mounts and contains a rotor having a rotor shaft and a plurality of rotor pins extending radially therefrom. The rotor pins are arranged in rows spaced incrementally along the length of the shaft with gaps therebetween each row including plural rotor pins arranged in spoke-like fashion. The rotor shafts preferably are mounted parallel to one another and lie in a common vertical plane. The rotor pins on one rotor shaft are axially offset from and overlap with the rotor pins on the adjacent rotor shaft(s) so that the rotor pins collectively are interleaved to provide a cross-combing …
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 October 28, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 28, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 28, 2013.
- 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.