Method of anchoring a fastener to a base and anchoring bolt for use in same
CA 1109303 A · Owner: Brossard, Jacques · Inventors: Brossard, Jacques
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A new method is disclosed of anchoring an expansible bolt assembly in a blind bore of a structure a mine roof, a, rock or the like. The bore is provided with at least on radial groove which is arranged to receive a ring forming a part of the expansion bolt assembly, the bolt assembly also forming a part of the invention. The expansion ring is of malleable material which, on operation of the expansion assembly be-, comes embedded in the radial groove. Thus the invention com-, bines an extreme simplicity of the expansion bolt assembly with considerable improvement in the anchoring effect.
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 September 22, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 22, 1998.
- 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.