Rotatable blast cleaning conveying surface and apparatus
CA 2180503 C · Owner: Blast Cleaning Products Ltd. · Inventors: Elliott, Charles Perry
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A blast cleaning apparatus is provided having a rotatable conveying surface preferably comprising wire mesh. Workpieces are conveyed through the blast cleaning chamber on the rotating conveying surface such that workpieces may be added to and removed from the conveying surface at a single work station by one operator. Also provided is a method for providing a feed tube to a blast cleaning wheel located below the conveyor, wherein the feed tube is passed through a central hole at the axis of rotation of the conveyor.
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 July 4, 1996 and granted September 14, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 4, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 4, 2018.
- 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.