Apparatus and method for continuous mining
CA 2075619 C · Owner: Price, David E. · Inventors: Lynch, Albert E.; Addington, Larry Michael; Conley, David L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for mining aggregate material from a seam includes a miner for cutting material from the seam and a , conveyor for conveying the won aggregate material from the miner for recovery. The conveyor is formed by a series of individual conveyor units hat are coupled or interconnected in series so as to form a train. The coupling comprises cooperating clevises and tongues interconnected by locking pins. Each unit includes a main frame supported on ground engaging wheels. A belt conveyor is supported in the main frame and a conveyor drive mechanism is provided on each unit. The apparatus also includes a launch vehicle. The launch vehicle includes a frame holding a conveyor for …
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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 December 9, 1991 and granted February 8, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 9, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 9, 2013.
- 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.