Reciprocating screening conveyor
CA 2205216 A1 · Owner: Comcorp, Inc. · Inventors: Hughes, John H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A screening conveyor (10) for conveying particulate matter such as, comminuted wood fiber, in a forward direction while screening the particulate matter to separate particles that are over a predetermined size from small particles that are under a predetermined size. The screening conveyor includes a frame (17 50) andfirst and second conveyor bed sections (16 30) that are supported by the frame.Each conveyor bed section defines a longitudinal axis and an upper surface (22) that is formed from a tiled series of trough shaped trays (20). Each tray defines a step including an ascending surface portion (96). The upper surface of each conveyor bed sections thus has a saw-toothed longitudinal …
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 12, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 12, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 12, 2019.
- 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.