Roller-accumulator for sheets
CA 2075412 C · Owner: Bowe Bell + Howell Company · Inventors: Bieber, Thomas E.; Driscoll, James N.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved accumulator and method of accumulation into stacks of a number of seriatim-fed sheets selectively in the manner of "over" or "under" accumulation and for conveying accumulated stacks to further equipment. The accumulator comprises driven endless belts (10,12) to drive sheets therebetween and driven roller means (14) for nipping and feeding the sheets to a stacking location to be accumulated therein. The nip (40) of the roller means (14) is offset in relation to the plane in which sheets are driven thereto by the belts (10, 12). The roller means (14) drives a sheet in a positively-nipped manner to the stacking location (26) selectively over or under a previously arrived sheet. …
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 August 6, 1992 and granted March 11, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 6, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 6, 2014.
- 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.