Mining machine
CA 1165338 A · Owner: Mining Supplies Limited · Inventors: Stoppani, Brian R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A mining machine of the shearer type comprises an elongate machine body housing inter alia a power unit for powering a rotary, mineral cutting head a haulage, unit mounted on the outside of the machine body and comprising a variable speed motor connected via speed reduction gearing to a machine haulage sprocket adapted to engage progressively rack bars or a chain extending along the mineral face.
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 April 10, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 10, 2001.
- 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.