Abrasive member
CA 2068288 A1 · Owner: Gagne, Yvon · Inventors: Gagne, Yvon
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An abrasive member for surfacing a workpiece by rotary abrasion under a flow of liquid comprises a base and, a plurality of abrasive segments protruding from the base. The abrasive segments are shaped and arranged in spaced relation to one another so as to form a network of intersecting primary and secondary channels the secondary, channels cooperating with the primary channels to effect substantially complete scavenging of detritus by centrifugal drainage of waste liquid carrying the detritus through both the primary and secondary channels to the outer periphery of the abrasive segments. Each abrasive segment has a planar working surface for abrading contact engagement with the workpiece …
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 8, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 8, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 8, 2014.
- 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.