Precision drill grinding collector
CA 2071089 A1 · Owner: Lalande, Rejean M. · Inventors: Lalande, Rejean M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a tool to collect Drill Grindings in the order that they were drilled so they may be analyzed to determine the outlines width length or grade of ore bodies in underground operation using pneumatic drills commonly known as Jack Legs and Long Hole machines. This invention consists of a collector box and burlap sock. The collector box is made of plate steel with rubber facings so it forms a seal when anchored to an irregular rock face a water, hose adapter for constant flushing a tubular port with holder at, bottom where grindings are collected in burlap sock and a centre drill port with rubber seal for drill steels and coupling to pass through. The burlap bag is cylindrical having a …
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 June 11, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 11, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 11, 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.