Agitating and anti-bridging device for waste toner in a xerographic printing apparatus
CA 2432575 A1 · Owner: Hart, Steven C. · Inventors: Hart, Steven C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a cleaning station for removing residual toner from a photoreceptor in a xerographic printing apparatus, the residual toner accumulates in a hopper and, an auger at the bottom of the hopper removes the accumulated toner. A thin flexible member forming an agitator extends nearly vertically from the top of the, hopper to the auger. Fingers at the end of the agitator contact the flights of the, auger. There are between one and three more fingers than there are flights of the auger: the discrepancy causes an undulation of the agitator when the auger rotates.
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 June 17, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 17, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 17, 2025.
- 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.