Guide for attachment to a roof bolter to allow for core drilling
CA 2403468 A1 · Owner: Pierce, Paul A. · Inventors: Pierce, Paul A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present disclosure provides a coring guide (50) for converting a mine roof bolter into apparatus suitable for guiding a coring rod or drill, into a mine , roof, as well as a method for obtaining a geological core from the mine roof using the guide. The guide includes a pair of jaws (52 54), wherein each jaw , has an adapter (52a 54a) end and a pivotable end. The adapter end of each jaw includes a cavity (72a, 72b) that faces a cavity included in the adapter end of the other jaw, such that the closed jaws form at least a major portion of a cylindrical coring cavity that accommodates a coring rod (100).
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 March 14, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 14, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 14, 2023.
- 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.