Material spreader for mounting on a vehicle
CA 1094123 A · Owner: Coleman Robert E. · Inventors: Coleman Robert E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A material spreader for spreading sand salt or the, like. The spreader is mounted on a vehicle or a trailer with the material being discharged from the rear. The spreader includes a fiberglass hopper and hopper housing with a stainless steel endless conveyor for reducing corrosion and wear. A spinner assembly used for spreading the material, and the conveyor are driven by a variable speed engine. The engine controls the speed of the conveyor and spinner assembly independently of the speed of the vehicle.
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
- Granted January 20, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 20, 1998.
- 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.