Feeding and discharge conduits for multiple screens
CA 1055431 A · Owner: Derrick Manufacturing Corporation · Inventors: Derrick, H. William (Jr.)
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Vibrating screen apparatus wherein high screening output is achieved by providing a series of inclined screens in generally end to end relation whereby undersize material passing through the screens is received in a common hopper disposed beneath the screens. The oversize material falls from the lower end of each screen and guide means thereat directs the oversize material from the several screens into a common conduit extending longitudinally beneath the screens to conduct the oversize material from the apparatus. A splitter above the apparatus divides the input material into equal parts corresponding to the number of screens and discharges such parts onto the upper ends of the several …
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
- Granted May 29, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 29, 1996.
- 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.