Accumulation conveyor control system
CA 2269964 A1 · Owner: Jervis B. Webb Company · Inventors: Ebert, Jeffery T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An accumulation conveyor control system includes a number of accumulation zone conveyors, each equipped with a control module coupled with an electronically controlled clutch. The system includes one motor linked to each accumulation conveyor for driving of the conveyor rollers. The clutch links a drive roller on each conveyor with the motor via a drive member such as a chain. The control module controls operation of the conveyors by sensing the presence or absence of an article in the path of one or more of the article sensors. When the path is blocked signifying the presence of an article, the module sends a signal upstream and receives signals from downstream zones to control roller …
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 April 23, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 23, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 23, 2021.
- 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.