Polymer concrete conveyor roller
CA 1285894 C · Owner: Bilodeau, Marcel · Inventors: Bilodeau, Marcel; Dube, Andre; Quesnel, Andre-Paul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a conveyor roller comprising a shaft a, plurality of bearings provided on the shaft and a roller, body having a cylindrical side surface and two exterior end walls, the body being fixed to the bearings and being, rotatable on the shaft, wherein the roller body is made with a moldable polymer concrete material, and contains an encapsulated labyrinth seal means connect to the shaft the, seal means being provided inside each end of the roller body at a position on the shaft between the bearings and each the exterior end wall of the roller body, such that the seal means isolates the bearings from exterior contaminants. The roller according to the invention is more resistant to …
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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 July 9, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 9, 2008.
- 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.