Truck-mounted abrasive and deicer spreader
CA 2080753 C · Owner: Isabelle, Paul · Inventors: Isabelle, Paul; Morrisset, Louis; Renaud, Benoit
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
he disclosure describes a device that may be mounted on a truck chassis and is intended to spread abrasives and ice removers for road upkeep; it comprises a hopper with at bottom centre, a longitudinal trough and a hood over this trough. A conveyor at the bottom of the hopper takes two paths one beneath the hood and another lower down within the trough so that abrasives and ice removers falling from the hopper are caught on the lower part of the conveyor and brought to the front of the hopper where another mechanism spreads them on the ground.
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 October 16, 1992 and granted September 9, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 16, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 16, 2014.
- 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.