A method and an equipment for adjusting rock drilling
CA 2109070 A1 · Owner: Tamrock Oy · Inventors: Mattero, Unto
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for optimizing rock drilling wherein the drilling is, adjusted by means of one or more adjustable parameters such as the feed rate and the rotation rate. In the method a set value, (Hs) of each adjustable parameter is deviated in accordance with a sinusoidal curve while integrating a change caused by the deviation in the penetration rate (x) and adding it to the set value (Hs) so that the set value (Hs) shifts closer to an optimum penetration rate (xopt).
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 April 21, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 21, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 21, 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.