Sluice box
CA 1097589 A · Owner: Dolan, Adelbert H. · Inventors: Dolan, Adelbert H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A chute is formed by a bottom wall and side walls and the bottom wall is provided with cross grooves for catching ore particles. The bottom and front walls of the grooves are formed on about the same radius of curvature with the curvature of the front wall forming an undercut under the feed edge of the grooves. The rear wall of the grooves leads from the bottom wall in a straight line inclined upwardly in a discharge end direction. Ore containing material which is fed down the chute is separated out in the grooves by a back eddy developed by the particular shape of the grooves.
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 March 17, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 17, 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.