Crossmixing dual auger system
CA 2017264 C · Owner: Bell, Conrad John · Inventors: Bell, Conrad John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A development system for a reproduction machine includes a pair of augers which mix and transfer the developer mixture to a magnetic roll brush system. The supply auger is positioned in a horizontal plane; the second return auger is at an angle to the first auger. The first auger transports developer material in one direction mixing the developer material and dispensing developer material along its length by gravity to the magnetic brush roll sump. A developer material transport opening at one end allows developer material to be gravity fed to the adjacent end of the inclined auger which carries the developer material uphill. The developer material is transferred at the other end by gravity …
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 May 22, 1990 and granted September 20, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 22, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 22, 2012.
- 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.