Combination dump body spreader & conveyor loading mechanism & flow control
CA 2196227 C · Owner: Dupont, Robert · Inventors: Larochelle, Bernard; Dupont, Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is directed at an improved construction of a combination dump body spreader, for winter road de-icing having at least one longitudinal conveyor located along one side, being fed by a specially braced "L-shaped" pivotally connected conveyor reloading, mechanism, operated by two differential displacement hydraulic cylinders. The drive power, source of the conveyor features a new easy mount system. The unit is provided with a, conveyor reloading mechanism that can be easily disassembled and reassembled from the, main structure through a specially designed pivotal connection system which , allows the, seasonal replacement of the conveyor reloading mechanism by an alternate …
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 January 29, 1997 and granted January 4, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 29, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 29, 2019.
- 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.