Material conveyor
CA 2238540 A1 · Owner: Collier, Harry B. · Inventors: Collier, Raymond A.; Collier, Harry B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a material conveyor which can be used for heavy loading and wet, materials. The conveyor an apron conveyor assembly about which is mounted a conveyor, belt on which the material is conveyed. The apron conveyor provides structural support, to the belt and drives the belt by friction between the steel pans and the belt. The rubber, belt is preferably continuous so that it will contain wet materials and prevent the wet, material from leaking into the drive assembly. To avoid damage to the belt by the, expanding pans of the drive assembly for example during the directional , change the belt, is provided with its own head and tail pulleys.
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 25, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 25, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 25, 2020.
- 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.