Screening apparatus
CA 1291068 C · Owner: Eriksson, Jan E. · Inventors: Eriksson, Jan E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Screening apparatus comprises a feeder conveyor an elevator, a screen box, an end boom elevator and two lateral boom elevators all carried on a wheeled trailer a, tow bar for which is located at the feeder conveyor end. The elevator has an elongate support with an endless belt arranged around two rollers longitudinally spaced apart on said support. A super structure framework on the trailer carries said support in an inclined position and the, screen box is pivotally linked at or adjacent to one end to the or near to the discharge end of said support and hinged to said structure at or adjacent to an opposite end. The support is movable lengthwise of itself relative to said structure and a …
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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 October 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 22, 2008.
- 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.