Method and a device for sampling material from a moving belt conveyor
CA 2009544 C · Owner: Johannesburg Consolidated Investment Company Limited · Inventors: Van Der Merwe, Eugene; English, Ralph Henry
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a sampler for removing material such as ore from a mining operation, from a moving belt conveyor. The sampler comprises a frame having sweeping means located between a pair of spaced blades and behind their cutting edges. A drive means is arranged to pass the frame periodically across the moving belt in order to confine the material between theblades in a sampling zone which extends obliquely across the belt. Material confined in the sampling zone is displaced from the belt while the blades traverse the belt. The material displaced from the belt is conveniently reduced to a homogeneous state for assaying.
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 February 7, 1990 and granted September 1, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 7, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 7, 2012.
- 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.