Apparatus for testing jack legs and air drills
CA 2427770 A1 · Owner: Botnan, Ted R. · Inventors: Botnan, Ted R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for testing for air and water leakage in jack legs and air drills used to bore, holes in rock and ore has an upright beam supporting a weight vertically movable with expansion, of the jack leg. A test stand has a plurality of valves operable to divert air to the jack leg and air, drill. Gauges on the test stand monitor the air pressure in the jack leg and air and water pressures, in the air drill to provide information as to air and water leakage and defective parts in the jack, leg and air drill.
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 May 2, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 2, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 2, 2025.
- 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.