Rock bolter
CA 2118447 C · Owner: Cannon Industries, Inc. · Inventors: Coombs, Perry L.; Morrison, Ward D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a device for setting rock bolts. The device employs a common element for affixing the end of a feed shell with respect to a rock surface, stabilizing the feed shell and providing a common centralizer for centering all subsequent bolt setting operations. The device also has a bolt magazine which stores, advances and positions the bolts in line with a bolt driver.
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 October 19, 1994 and granted June 16, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 19, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 19, 2016.
- 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.